Disclosed by the present disclosure is a skywave massive MIMO-OFDM triple beam-based channel modeling as well as related methods and systems for channel information acquisition. Established by the present disclosure is a skywave massive MIMO-OFDM triple beam-based statistical channel model, where a spatial-frequency-time domain channel vector is expressed as a product of a triple beam matrix and a triple beam domain channel vector; the triple beam matrix is composed of sampled triple steering vectors corresponding to one set of sampling points of a direction cosine, a time delay, and a Doppler frequency that are selected by a base station; where each of the sampled triple steering vectors is called as a triple beam. Based on the triple beam-based statistical channel model, the base station groups each of the users and allocates pilot sequences by utilizing the statistical channel information; the base station obtains an estimated triple beam domain channel vector by using the received pilot signal, and obtains the spatial-frequency-time domain channel vector for the pilot band and the data band according to the triple beam-based statistical channel model. The present disclosure performs a more accurate channel modeling, which can reduce pilot overhead and computational complexity.
H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
An integrated apparatus and method for co-production of carbon and hydrogen by biomass cascade pyrolysis-microwave gasification are provided. The apparatus includes an integrated reaction system, an internal and external radial energy supply system, and a product separation and collection system. The method includes firstly performing low-temperature pyrolysis on feedstock to greatly improve its absorbing property, and then preparing co-production of a hydrogen-rich gas and a porous carbon product by microwave gasification and online reforming, where the combustion of the pyrolysis gas provides heat for feedstock drying and its low-temperature pyrolysis reaction; performing separation and purification on the hydrogen-rich gas to prepare a high-purity hydrogen product, where the separated gas serving as a gasification agent returns for gasification reaction. By using multi-system collaborative integrated designing, the low-temperature pre-pyrolysis improves microwave product quality and reaction efficiency while greatly reducing high-quality electric energy consumption, and supplying heat by self-made low-quality thermal energy recycling.
C10B 53/02 - Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
3.
HIGH-RELIABILITY LOW-LOSS POWER DEVICE AND MANUFACTURING METHOD
The present invention relates to a high-reliability low-loss power device, comprising a top metal layer (1), a plurality of cells, a bottom metal layer (14), a first conductivity type substrate layer (13), and a first conductivity type epitaxial layer (12). Second conductivity type deep body regions (7) extend deeply into the first conductivity type epitaxial layer (12), and trench tips are formed at the bottom ends by means of a specific etching process to transfer an electric field to the deep body regions, thereby reducing the electric field at a heterojunction interface and reducing a leakage current without affecting the withstand voltage level of the device. Furthermore, the doping concentration of the first conductivity type epitaxial layer (12) is increased, thereby increasing the carrier concentration in a drift region and first conductivity type JFET regions (10), and further reducing the on-resistance. The present invention further provides a corresponding manufacturing method, which solves the problems of high specific on-resistance, high freewheeling voltage, and high leakage current in conventional power devices.
Disclosed in the present invention are a cross-frequency-point channel graph extrapolation method, and a system. In the present invention, on the basis of image style transfer technology, the correlation among channel information between different frequency points is ascertained, and a priori knowledge of a channel graph at a certain frequency point is used to estimate channel graphs at other frequency points, thereby realizing cross-frequency-point extrapolation. In the present invention, first, a channel graph in which statistical channel information is stored is modeled as a multi-channel image, and a cross-frequency-point extrapolation problem is combined with an image style transfer task; then, the mining of the correlation between frequency points, the extraction of a priori information features and the mapping of the channel graph are realized by means of designing generative neural networks; a cycle consistency loss is further introduced to perform reciprocal relationship fitting; and finally, fine-grained optimization is performed on an extrapolation result of the channel graph by means of pixel-grid conversion. The present invention can not only realize high-precision extrapolation between any frequency points, but also has a relatively strong generalization capability in different wireless communication scenarios, and can assist a wireless communication system in realizing high-rate transmission.
The present application relates to an integrated structure of a N-channel device and a P-channel device, and a CMOS inverter. The integrated structure comprises: a channel layer; a barrier layer; a P-type gallium nitride layer located on the barrier layer; a P-channel device source located on the P-type gallium nitride layer; a P-channel device drain located on the P-type gallium nitride layer; a P-channel device gate structure located between the P-channel device source and the P-channel device drain; an N-channel device source located on the barrier layer; an N-channel device drain located on the barrier layer, wherein part of the P-type gallium nitride layer is located between the N-channel device source and the N-channel device drain; a P-type gallium nitride cap located on the barrier layer; and an N-channel device gate which is located on the P-type gallium nitride cap, located between the N-channel device source and the N-channel device drain, and located between the P-channel device source and the P-channel device drain.
H10D 84/00 - Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
6.
MAGNETORHEOLOGICAL DAMPER CAPABLE OF REALIZING INDEPENDENT FORCE FEEDBACK IN LINEAR AND ROTATONAL DIRECTIONS
NANJING ADVANCED ROBOTICS TECHNOLOGY RESEARCH INSTITUTE CO., LTD. (China)
Inventor
Li, Huijun
Sun, Zhongyu
Lu, Ye
Zhang, Maozeng
Li, Ye
Song, Aiguo
Xu, Baoguo
Abstract
A magnetorheological damper capable of realizing independent force feedback in linear and rotational directions. The magnetorheological damper comprises two cylinders filled with magnetorheological fluid, wherein a first cylinder is internally provided with a piston head assembly, and piston rods (1, 15) axially penetrating the cylinder, a coil (23) wound by an enameled wire is provided on the piston head assembly, the piston head assembly is connected to the piston rods (1, 15) by means of two rotary bearings (21, 24), and the piston rods (1, 15) drive the piston head assembly to operate linearly to change the magnitude of the current in the enameled wire, thereby outputting different damping forces in a linear direction; and a second cylinder is internally provided with a fixed drum (8), which is stationary, and a movable drum (7), which is rotationally fixed to the piston rods, and the piston rods drive the movable drum (7) to rotate in the second cylinder to squeeze the magnetorheological fluid between the fixed drum (8) and the movable drum (7), thereby outputting different damping forces in a rotational direction. The magnetorheological damper combines the operating modes of a valve-mode magnetorheological damper and a rotary magnetorheological damper, and decouples, on the piston rods, the damping force in the rotational direction and the damping force in the linear direction, thereby providing independent force feedback in the linear and rotational directions.
The present invention relates to a membrane-free chemical-looping cyclic water electrolysis hydrogen production device and method based on intrinsic safety. The device comprises two electrolytic cells, a normal-temperature alkali liquor buffer tank, a high-temperature alkali liquor buffer tank, an oxygen separation device, a hydrogen separation device, a storage tank, and an external power supply, wherein at least one electrolytic chamber is formed in each electrolytic cell, an anode plate and a cathode plate are provided in each electrolytic chamber, a porous partition plate is provided between the anode plate and the cathode plate, and the anode plate material contains a chemical-looping oxygen carrier. The method comprises: each electrolytic cell alternately operating in first and second working conditions, and the two electrolytic cells in the same time period being in different working conditions, so as to realize synchronous and continuous production of hydrogen and oxygen in different spaces. The first and the second working conditions are respectively as follows: under the conditions of a normal-temperature alkali liquor and circuit connection, a cathode performs electrochemical hydrogen production, and the chemical-looping oxygen carrier of an anode is oxidized into an oxidized-state chemical-looping oxygen carrier; and under the conditions of a high-temperature alkali liquor and circuit disconnection, the oxidized-state chemical-looping oxygen carrier of the anode is reduced and generates oxygen.
Disclosed in the present invention are a method for constructing a channel fingerprint twin, and a system. In the present invention, a coarse-grained channel fingerprint and a fine-grained channel fingerprint are respectively regarded as a physical object and a digital twin object, and image super-resolution technology is used to construct a relationship between the coarse-grained channel fingerprint and the fine-grained channel fingerprint. In the present invention, on the basis of variational inference and a re-parameterization theory, an evidence lower bound of a fine-grained channel fingerprint twin likelihood is derived to serve as an objective function, and the coarse-grained channel fingerprint is introduced as side information to design a conditional generative diffusion model for generating the fine-grained channel fingerprint, wherein the conditional generative diffusion model can be deployed in a core computing center of a channel fingerprint twin. In addition, in the present invention, a one-shot pruning algorithm and multi-objective knowledge distillation technology are further introduced to acquire a lightweight conditional generative diffusion model. The method for constructing a channel fingerprint twin provided in the present invention not only ensures the reconstruction accuracy, but also has relatively strong scalability and generalization capability in wireless communication scenarios with different fine-grained channel fingerprints.
The present disclosure belongs to the field of magnetic thermal therapy and particularly relates to a magnetic thermal therapy system capable of injecting self-temperature-controlling magnetic hydrogel. The system comprises: a magnetic hydrogel implantation module, wherein the magnetic hydrogel implantation module comprises a puncture needle, and the puncture needle is configured for puncturing into a treatment target area to inject the magnetic hydrogel; and an alternating magnetic field generator, which is configured for generating an alternating magnetic field with the magnetic field intensity and frequency adjustable, so that a magnetic medium in the magnetic hydrogel implanted into the treatment target area by the magnetic hydrogel implantation module is subjected to magnetic induction-induced heat generation and temperature rise and thereby kills cancer cells. The system enables safe implantation of the injectable body temperature-curing thermal therapy magnetic hydrogel; precise temperature control of magnetic thermal therapy can be achieved without a temperature measuring element and a circulating water temperature control system, less magnetic medium particles need to be implanted, and toxic and side effects can be reduced while effective treatment is guaranteed.
F25B 21/02 - Machines, plants or systems, using electric or magnetic effects using Peltier effectMachines, plants or systems, using electric or magnetic effects using Nernst-Ettinghausen effect
F25B 49/00 - Arrangement or mounting of control or safety devices
H05B 6/10 - Induction heating apparatus, other than furnaces, for specific applications
10.
APPARATUS FOR MANUAL IMPLANTATION OF SELF-THERMOREGULATING MAGNETIC HYDROGEL
Provided is an apparatus for manual implantation of a self-thermoregulating magnetic hydrogel, comprising a needle cylinder (2). The needle cylinder (2) is loaded with a magnetic hydrogel. The needle cylinder (2) comprises a needle head interface (4). An injection implantation needle (6) is mounted on the needle head interface (4). A temperature control unit (5) is mounted at the position of the needle head interface (4). The apparatus for manual implantation of a self-thermoregulating magnetic hydrogel solves the problem of hydrogel curing in a needle channel in the injection process.
Disclosed in the present invention is a bridge scour curved surface morphological feature reconstruction method based on three-dimensional sonar point clouds, comprising the following steps: collecting point cloud data of a three-dimensional morphology of an underwater riverbed terrain near a bridge foundation, and acquiring original point cloud data of a complete morphology of an underwater riverbed; performing denoising and ball pivoting reconstruction preprocessing on the collected original point cloud data to complete preliminary reconstruction of point clouds; on the basis of the point cloud data having undergone preliminary reconstruction, performing point cloud binarization-based scour morphology recognition on the basis of a computer vision principle, calculating scour pit element classification values of all the point clouds, and recognizing scour pit point clouds; on the basis of the recognized scour pit point clouds, using a K-means clustering algorithm for clustering, and calculating the maximum depth of each pier scour pit; and on the basis of the obtained scour pit element classification values of all the point clouds, providing a curved surface reconstruction method based on scour recognition to perform high-precision curved surface reconstruction on the scour pits. The present invention can achieve high-precision scour pit morphology reconstruction.
G06V 10/28 - Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns
G06V 10/762 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using clustering, e.g. of similar faces in social networks
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
G01S 15/88 - Sonar systems specially adapted for specific applications
G01S 7/539 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
G01B 17/06 - Measuring arrangements characterised by the use of infrasonic, sonic, or ultrasonic vibrations for measuring contours or curvatures
12.
MAGNETOCALORIC RADIOACTIVE COMPOSITE PARTICLE AND PREPARATION METHOD THEREFOR
A magnetocaloric radioactive composite particle and a preparation method therefor. The magnetocaloric radioactive composite particle comprises a surrounding layer. An iodine-plated silver rod is wrapped in the surrounding layer. An accommodating area is present between the surrounding layer and the iodine-plated silver rod. The accommodating area is filled with magnetocaloric nanoparticles. The iodine-plated silver rod is located within the mid-section of the surrounding layer. The magnetocaloric radioactive composite particles have magnetocaloric therapy and radioactive therapy functions at the same time; the magnetic medium particles are concentrated in a titanium shell, such that the toxic and side effects can be reduced while effective therapy is guaranteed.
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
Provided is an apparatus for automatic implantation of a self-thermoregulating magnetic hydrogel, comprising: an injection implantation needle (14), the injection implantation needle (14) being used for injecting the magnetic hydrogel to a target position; and a driving assembly (100), the driving assembly (100) being connected to the injection implantation needle (14), and the driving assembly (100) being used for driving the injection implantation needle (14) to feed. The injection implantation needle (14) is in communication with a magnetic hydrogel storage box (3) by means of a catheter. A metering pump (7) pumps the magnetic hydrogel in the magnetic hydrogel storage box (3) into the injection implantation needle (14) by means of a first catheter (4), achieving automatic and accurate implantation of the self-thermoregulating magnetic hydrogel.
Disclosed is an adaptive model updating algorithm for probabilistic analysis of complex engineering structures. The method involves determining parameter distribution, sampling based on prior distribution, calculating likelihood values, and adaptively updating coefficients. Iterations include calculating a covariance matrix, generating intermediate parameters, and sampling candidate values for acceptance. Iterations continue until a stop condition is met, yielding the posterior parameter distribution. This algorithm enhances health detection in complex structures by overcoming prior limitations such as inefficient coefficient determination and suboptimal likelihood functions, significantly reducing calculation time and improving efficiency.
The present invention relates to the technical field of heat sink structure design, and in particular to a micro-channel heat sink structure design method based on a multi-objective function. The method comprises the following specific steps: S1, constructing a general mathematical description of a topology optimization problem; S2, acquiring input conditions for a specific design scenario, and dividing a topology optimization design domain; S3, establishing a governing equation for a topology optimization model; S4, on the basis of an adjoint method, performing sensitivity analysis of a multi-objective function with respect to design variables; S5, solving the topology optimization model by means of a method of moving asymptotes (MMA); S6, obtaining a two-dimensional flow channel configuration of a heat sink on the basis of contour reconstruction, carrying out finite element analysis of a two-dimensional flow channel structure, and narrowing down the selection range of constraint conditions; and S7, on the basis of a two-dimensional finite element analysis result, constructing a corresponding pseudo-three-dimensional model, carrying out finite element analysis, and determining optimal constraint conditions to obtain a final topology-optimized heat sink configuration. Compared with traditional methods, the present invention can more efficiently solve the problem in respect of heat sink structure optimization under different scenarios.
Provided method and system for three-directional displacement monitoring of building by fusion of InSAR data and physical knowledge. Time-series LOS-directional deformation displacement of region of study, where building to be monitored is located, from each orbit is acquired based on periodical observation data of SAR satellite; time-unified LOS-directional time-series deformations from plurality of orbits are acquired using interpolation method; deformations in vertical and east-west directions are solved by establishing observation equation using interpolated multi-orbital LOS-directional deformation data; ratio of major-axis-directional deformation to minor-axis-directional deformation is calculated by calculating major-axis stiffness and minor-axis stiffness of each standard storey of building structure according to building structure plan, and establishing priori model of building structure using Equivalent Lateral Force method; deformation displacement of building structure in south-north direction is solved based on two-dimensional deformation result and with established priori model of building. The present invention can efficiently and accurately monitor building deformation.
G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
G01S 13/90 - Radar or analogous systems, specially adapted for specific applications for mapping or imaging using synthetic aperture techniques
17.
SILICON-ON-INSULATOR SEMICONDUCTOR STRUCTURE AND METHOD FOR MANUFACTURING SAME
The present invention relates to a silicon-on-insulator semiconductor structure and a method for manufacturing same. The structure comprises a lateral double-diffused metal-oxide-semiconductor (LDMOS) field-effect transistor. The LDMOS field-effect transistor comprises: a substrate; a buried dielectric layer located on part of the substrate; a drift region located on the buried dielectric layer; a deep well located in the substrate and at least partially located below the buried dielectric layer; a drain region located above the buried dielectric layer; a source region located above the buried dielectric layer, the drift region being at least partially located between the source region and the drain region; and a gate. The conductivity type of the deep well is opposite to that of the substrate. For an nLDMOS, the drain region thereof is electrically connected to the deep well. For a pLDMOS, the source region thereof is electrically connected to the deep well. According to the present invention, the potential of the deep well having a conductivity type opposite to that of the substrate is led out and connected to the drain region of the nLDMOS/the source region of the pLDMOS, and the substrate is made to participate in vertical voltage withstanding by means of mutual depletion between the deep well and the substrate, thereby improving the breakdown voltage of a device.
A heart-sound signal quality index assessment method, and an electronic device and a readable storage medium. The method comprises: collecting a heart sound signal (S10); performing feature extraction on the heart sound signal, so as to obtain a signal feature, wherein the signal feature comprises one or more of a local variance feature, a local peak feature, a signal energy feature and a zero-crossing rate feature (S20); and inputting the signal feature into a pre-trained signal quality index assessment model, and outputting a signal quality index assessment result (S30).
G10L 25/60 - Speech or voice analysis techniques not restricted to a single one of groups specially adapted for particular use for comparison or discrimination for measuring the quality of voice signals
The present application relates to the technical field of medical signal processing. Disclosed are a heart-sound segmentation method and apparatus, and an electronic device and a readable storage medium. The heart-sound segmentation method comprises: synchronously collecting physiological signals, wherein the physiological signals comprise a heart sound signal; acquiring a segmentation threshold value corresponding to the heart sound signal, and segmenting the heart sound signal on the basis of the segmentation threshold value, so as to obtain a first heart sound and a second heart sound; and on the basis of the first heart sound and the second heart sound, determining the systole duration of the heart sound signal and the diastole duration of the heart sound signal. The present application reduces the consumption of resources for heart sound segmentation of heart sound signals.
A method and apparatus for predicting blood pressure, an electronic device, and a readable storage medium, relating to the technical field of medical treatment. The method for predicting blood pressure comprises: synchronously acquiring physiological signals, wherein the physiological signals comprise an electrocardiographic signal, a pulse signal, and a heart sound signal; performing feature extraction on the physiological signals to obtain signal features, wherein the signal features comprise an pre-ejection period duration and a pulse transmission time; and inputting the signal features into a pre-trained blood pressure prediction model, so that the blood pressure prediction model outputs a blood pressure prediction result, thereby improving the prediction accuracy of blood pressure.
The present invention relates to the technical field of power systems and operations research. Disclosed are a method and system for coordinated source-grid-load-storage dispatch optimization during post-disaster restoration of a power distribution system. The method comprises: acquiring network topology constraint data for a power distribution system, wherein network topology constraints for the power distribution system comprise a virtual network topology constraint for the power distribution system, a geometric network topology constraint for the power distribution system, and an electrical network topology constraint for the power distribution system; on the basis of fault situations of a power source device, a load device and an energy storage device that are caused by a disaster, generating operational characteristic constraint data for devices in the power distribution system, wherein the operational characteristic constraint data for the devices in the power distribution system comprises operational characteristic constraints for the power source device, the load device and the energy storage device; and inputting the network topology constraint data for the power distribution system and the operational characteristic constraint data for the devices in the power distribution system into a pre-established coordinated source-grid-load-storage dispatch optimization model for power distribution systems in a post-disaster restoration scenario, such that a coordinated dispatch optimization result is output.
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
G06Q 10/04 - Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
G06Q 10/0631 - Resource planning, allocation, distributing or scheduling for enterprises or organisations
A lightweight and compact lunar regolith sampling system mountable on a rover. The system comprises a three-degree-of-freedom manipulator based on open cylindrical thin-shell rods, and a control unit based on three-dimensional force/torque information, wherein the three-degree-of-freedom manipulator based on the open cylindrical thin-shell rods has a translation mechanism (1), a lateral rotation mechanism (2) and a rear rotation mechanism (3), and the lower part of the three-degree-of-freedom manipulator is connected to a sensor (4) and a sampler (5); and the control unit based on the three-dimensional force/torque information collects force sensing information and sends the force sensing information to an NUC, and the NUC reads the position of an output shaft of a servo electric motor by means of CAN bus communication, generates a real-time control instruction on the basis of a compliant control algorithm, and sends the real-time control instruction to the servo electric motor by means of CAN bus communication, so as to realize closed-loop control. The system has lightweight characteristics and a strong storage capacity while ensuring the structural strength, uses three-dimensional force/torque information to monitor an operation environment and adjusts a sampling strategy in real time, thereby effectively handling complex operation environments and thus significantly improving the safety and flexibility of sampling operations.
A combined three-dimensional force/torque sensor. A plurality of discrete one-dimensional force sensors (11, 12, 13, 14) are used to measure force components, and a conduction flange (2) is used to transmit an external force. The combined design effectively reduces inter-dimensional coupling and has a simple structure. The lateral torque and the axial pressure are monitored in a differential form and a summation form, thereby effectively improving the sensitivity and measurement accuracy of the sensor. Further disclosed is a miniature calibration system established by using the combined three-dimensional force/torque sensor. The calibration system has a small size and a simple structure, is easy to assemble and convenient to carry and transfer, and is capable of on-site calibration.
G01L 5/1627 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance of strain gauges
G01L 3/00 - Measuring torque, work, mechanical power, or mechanical efficiency, in general
G01L 25/00 - Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
24.
Reconfigurable underwater vehicle capable of far-distance cruising and underwater interactive operation
The present disclosure provides a reconfigurable underwater vehicle capable of far-distance cruising and underwater interactive operation, which includes an operation compartment, two buoyancy compartments connected with the operation compartment by connection rods, and a folding mechanism located within the buoyancy compartments and the connection rods to drive rotation of the connection rods to switch underwater vehicle working modes. The underwater vehicle working modes include an unfolded mode and a folded mode. In the unfolded mode, the two buoyancy compartments are unfolded along a axial direction of the operation compartment to both sides of the operation compartment, and the two buoyancy compartments and the operation compartment are in series-connected state; in the folded state, the two buoyancy compartments are folded above the operation compartment at an included angle, and the two buoyancy compartments are in parallel connected state.
A specular object detection method and system based on the fusion of single-phase measurement deflectometry and tactile sensing. A fringe pattern with a fixed phase shift is projected onto the surface of a specular object by means of a mono-PMD system, and fringe deformation in a specular area is captured by means of a camera, so as to acquire relative height information of the surface; a tactile sensor is introduced to directly measure the absolute heights of key points, so as to overcome the problem of there being an ambiguity between the height and the gradient because a mono-PMD can only provide relative heights; and then, on the basis of height data acquired by the tactile sensor, a polynomial fitting method is used to combine the relative heights obtained by means of visual measurement and the absolute heights obtained by means of tactile detection, so as to finally realize three-dimensional topography reconstruction for the whole specular object.
G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
G01B 11/06 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness for measuring thickness
G01B 21/02 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
G01B 21/20 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
26.
VEHICLE GNSS POSITIONING METHOD BASED ON MULTI-MOTION MODEL INTERACTION
A vehicle GNSS positioning method based on multi-motion model interaction. The method comprises: respectively establishing a PCV model and a PCSAV model of a carrier on the basis of a straight driving pose and a turning driving pose of the carrier, so as to obtain a state estimation vector and a state transition matrix, which are based on the PCV model and the PCSAV model, of the carrier at a previous moment; introducing an interactive multiple model to establish an interactive-multiple-model-based heuristic position-velocity filtering (HPV-IMM) model; realizing information filtering interaction between the PCV model and the PCSAV model; and obtaining a state estimation vector and an error covariance matrix of the carrier at the current moment, so as to obtain the position and velocity of the carrier at the current moment. The method solves the problem of the low precision of a conventional single kinematic model in terms of multi-motion-pose vehicle positioning, and is thus suitable for dynamic navigation of multi-pose vehicle motion in an urban environment.
Disclosed in the present invention are a processor and accelerator direct connection interface embedded in a pipeline, and an implementation method therefor. The interface is integrated in a memory access stage of a CPU pipeline; and after branch prediction hits, read and write operations can be immediately sent to an accelerator by means of the interface. The interface provided in the present invention constructs a random access queue and a scheduler to schedule hardware-level heterogeneous accelerator operations; the random access queue supports random access for buffering HA operations, thereby preventing physical priority inversion and allowing importance-based operation priorities; and the configurable scheduler creates a priority queue to ensure the preemptive scheduling of the HA operations, thereby ensuring both predictability and throughput. The prevent invention also prevents data hazards by means of forwarding logic. The interface provided in the present invention has relatively low latency and relatively high stability, and also ensures both the throughput and the real-time performance.
The present disclosure provides a positive and negative bipolar modular multilevel alternating current (AC)-AC frequency converter, including a modular multilevel frequency converter and a three-phase three-winding bipolar transformer. The modular multilevel frequency converter has an ABC three-phase structure, each phase includes the same upper bridge arm and lower bridge arm, and the upper and lower bridge arms include n full-bridge sub-modules (FBSMs) and a bridge arm inductor connected in series. The positive and negative bipolar modular multilevel AC-AC frequency converter can be further expanded and enable bidirectional energy flow. In the present disclosure, by introducing a positive and negative bipolar three-winding transformer, an AC-AC frequency converter topology with simple structure, high efficiency, flexibility and reliability is realized, which has high practical value.
H02M 5/16 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using transformers for conversion of frequency
H02M 5/297 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal for conversion of frequency
29.
DNA TETRAHEDRAL FLUORESCENT PROBE BASED ON MULTIVALENT SPATIAL PATTERN RECOGNITION, AND USE THEREOF
The present invention relates to the technical field of biological detection, in particular to a DNA tetrahedral fluorescent probe based on multivalent spatial pattern recognition and the use thereof. The fluorescent probe is of a tetrahedral structure, and comprises five DNA single strands, three DNA long strands and three DNA short strands complementary to the DNA long strands, wherein the three DNA long strands comprise a CY5 dye modifying the 3' end, and the three DNA short strands comprise a BHQ2 dye modifying the 3' end. The DNA tetrahedral fluorescent probe of the present invention can achieve multivalent recognition of a circular RNA and structurally matches same, and thus has enhanced specificity and sensitivity of circular RNA detection and is suitable for imaging and detection of circular RNAs.
A particle collision contact time measurement method and apparatus. The method comprises the following steps: focusing a continuous laser to form a light beam, the beam waist diameter of which is smaller than the diameter of a particle to be measured; emitting said particle to a beam waist position of the laser; quantitatively monitoring a light intensity change; and obtaining a duration in which the laser is occluded by said particle to the greatest extent or obtaining a duration after an output voltage of an oscilloscope is reduced to the minimum. Thus, the measurement of a particle collision contact time is realized. By quantitatively monitoring the light intensity change, the duration in which the laser is occluded by said particle to the greatest extent is obtained, so that the measurement of the particle collision contact time is realized. The method has advantages such as being capable of measuring a particle collision contact time down to the scale of a laser diffraction limit, and not being affected by material limitations of whether a particle is conductive, charged, etc., and the method can record the particle collision contact time with extremely high precision.
A reconfigurable underwater vehicle capable of long-range cruise and underwater interaction operation, comprising: an operation cabin (2); two buoyancy cabins (1) connected to the operation cabin (2) by means of connecting rods (3); and a folding mechanism (4) located in the buoyancy cabin (1) and the connecting rods (3) and used for driving the connecting rods (3) to rotate so as to convert the working mode of the underwater vehicle. The working mode of the underwater vehicle comprises an unfolded mode and a folded mode. In the unfolded mode, the two buoyancy cabins (1) are unfolded in the axial direction of the operation cabin (2) to two sides of the operation cabin (2), the two buoyancy cabins (1) and the operation cabin (2) being in a series connection state. In the folded mode, the two buoyancy cabins (1) are folded above the operation cabin (2) at a certain included angle, the two buoyancy cabins (1) being in a parallel connection state.
The present invention relates to the field of power integrated circuits, and disclosed is a level shift circuit for improving the anti-noise capability of a high-voltage gate driver chip. When a high-voltage domain power rail rises rapidly, a feedback control module detects that common-mode noise is present in a signal transmission path, and outputs a feedback signal to control the load impedance of a level shift branch to be reduced, thereby reducing the amplitude and time of impact of the noise, and filtering out residual noise by a rear-stage filter circuit can ensure that the noise would not cause logic function disorder of a high-voltage domain circuit. Moreover, the time of impact of the noise can be greatly shortened due to the action of a dynamic load structure and the feedback control module, and the noise can be thoroughly filtered out by the rear-stage filter circuit. Therefore, the allowed minimum pulse width of an input signal can be effectively reduced, and a signal transmission delay can be greatly reduced.
Disclosed in the present invention is a disc-type brushless electrically excited magnetic field modulation motor with a double-row stator structure, comprising: an inner stator and an outer stator which are distributed inside and outside in a radial direction, and a rotor arranged in parallel at the tops of teeth of the inner and outer stators. The rotor is of a split salient pole structure without a yoke; the inner stator comprises an inner stator core and an excitation winding; the outer stator comprises an outer stator core and an armature winding; an excitation winding coil is wound on the inner stator core, and an armature winding coil is wound on the outer stator core; the plane where the rotor is located is parallel to the plane where the tops of the teeth of the inner and outer stators are located, and an air gap is formed between the two planes; and the plane of the excitation winding coil is parallel to the plane where the air gap is located, and the armature winding coil is parallel to the plane where the air gap is located. Compared with conventional single-stator electrically excited magnetic field modulation motors, the disc-type brushless electrically excited magnetic field modulation motor with a double-row stator structure provided by the present invention can better utilize the radial space inside the stators, thereby improving the power density of the motor.
Disclosed in the present invention are a multi-modal shared teleoperation system and method for a three-arm space robot. The system at least comprises a master-side teleoperation system, a communication module and a slave-side robot system, wherein the master-side teleoperation system at least comprises two force feedback hand controllers, a microphone array and upper computer software, and the slave-side robot system comprises two operating arms each equipped with a gripper at the end, an observation arm having a binocular camera mounted at the end, a vision unit, a force sensor and lower computer software. The method comprises: an operator controlling two operating arms of an extravehicular robot to execute a task, and controlling an observation arm to acquire a better local field of view. In the method, a multi-modal teleoperation method comprising pose control, voice control and force control is fused with autonomous control of a robot by means of a shared control algorithm, and thus, human-robot collaborative control over the position, orientation and contact force of a robotic arm can be realized on the basis of the requirements of the operator, and the robot autonomously executes other relatively simple tasks, thereby reducing the operation burden of operators, and improving the control efficiency.
p-s,isii of the two arms are respectively determined on the basis of the cooperation strategies; a dual-arm cooperative potential field is constructed on the basis of the cooperation factors, the distances between the target object and the tool center points of the two arms, and the position of an obstacle; and corresponding dynamic virtual constraint forces are generated on the basis of the dual-arm cooperative potential field, and two force feedback hand controllers are used to guide and assist an operator in controlling the two robotic arms to complete a dual-arm cooperative task.
A microfluidic chip for in-situ EIS detection of C. elegans is provided. The chip has three layers of structures. A lower layer is a glass substrate integrated with a micro-electrode array and is used for EIS measurement and C. elegans deflection. A middle layer is a fluidic channel layer and is formed by a C. elegans perfusion channel, a storage chamber, a deflection channel, an EIS measurement chamber and a fluidic outlet channel connected in sequence. An upper layer is a pneumatic valve channel layer, and storage chamber control valves of the pneumatic valve channel layer are used for controlling C. elegans to enter or come out of the storage chamber. A deflection channel control valve is used for controlling C. elegans to enter the measurement chamber. A C. elegans capture valve is used for controlling C. elegans in the EIS measurement chamber to be captured and released.
Disclosed are a force guidance telerobotic system and control method based on a dual-arm collaborative potential field. A real-time pose of a tool center point of each of the two robotic arms is obtained using a robotic arm kinematic model, and checking is performed to determine whether a shortest distance dp-s,i between a target object and a workspace boundary of each of the two robotic arms is lower than a threshold Ds; a dual-arm symmetric collaboration strategy will be adopted when higher than the threshold; a single-arm primary collaboration strategy will be adopted when lower than the threshold; and a coordination factor δi of each of the robotic arms is determined according to the collaboration strategy; the dual-arm collaborative potential field is constructed according to the collaboration factor, a distance between the target object and the tool center point and a position of obstacle.
A multimodal shared telerobotic system and method for a three-arm space robot, the system at least includes a local-site system, a communication module, and a remote-site system, where the local-site system includes two force-feedback haptic devices for left and right hands, a microphone array, and upper computer software; the remote-site system includes two robotic arms provided with end-effectors, an observation arm with a stereo camera installed at an end thereof, two force sensors, a vision unit and lower computer software; an operator can control the two robotic arms of the robot outside a cabin for performing operations, and control the observation arm to obtain a better local view; and a multimodal telerobotic control method of pose control, voice control, and force control is integrated with the robot's autonomous control through a shared control algorithm.
China Energy Science and Technology Research Institute Co., Ltd. (China)
Southeast University (China)
Inventor
Zhuang, Ke
Xu, Yun
Cai, Jingming
Zhu, Fahua
Gu, Jiaming
Zhang, Qian
Xu, Jingxin
Abstract
The present disclosure relates to the technical field of preparation of supercapacitor and geopolymeric concrete and discloses a carbon nanotube fly ash composite material and a preparation method and use thereof. The carbon nanotube fly ash composite material comprises an acidified carbon nanotube fiber fabric and a fly ash compound attached to the acidified carbon nanotube fiber fabric, wherein the fly ash compound comprises a cementitious material, a fine aggregate, an alkali activator, and carbon fibers, wherein the cementitious material is a mixture of fly ash, slag, and silica fume. The carbon nanotube fly ash composite material has desirable strength, ductility, and specific surface area, and an asymmetric supercapacitor prepared with the carbon nanotube fly ash composite material has stable properties, high charge-discharge efficiency, and high energy density and power density, and can be utilized in the aspects of large-capacity energy storage such as dwelling, transportation and industrial application.
C04B 18/14 - Waste materialsRefuse from metallurgical processes
C04B 20/00 - Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups and characterised by shape or grain distributionTreatment of materials according to more than one of the groups specially adapted to enhance their filling properties in mortars, concrete or artificial stoneExpanding or defibrillating materials
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
D01F 9/12 - Carbon filamentsApparatus specially adapted for the manufacture thereof
H01G 11/36 - Nanostructures, e.g. nanofibres, nanotubes or fullerenes
H01G 11/38 - Carbon pastes or blendsBinders or additives therein
H01G 11/86 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
41.
SILICON-CARBIDE DEVICE ISOLATION STRUCTURE BASED ON N-EPITAXY, AND SILICON-CARBIDE HIGH AND LOW-VOLTAGE INTEGRATED DEVICE BASED ON N-EPITAXY AND PREPARATION METHOD THEREFOR
A silicon-carbide device isolation structure based on N-epitaxy, and a silicon-carbide high and low-voltage integrated device based on N-epitaxy and a preparation method therefor. The isolation structure comprises an N-type substrate, an N-type drift region, and a first isolation trench and second isolation trench in which oxides are deposited so as to form a high-voltage region, a low-voltage region and a level shift region, wherein a second P-type doped region is provided at the bottom of the low-voltage region and the bottom of the level shift region, and a second N-type doped region is provided on the second P-type doped region in the low-voltage region; and the N-type drift region, the second P-type doped region in the low-voltage region, and the second N-type doped region form a back-to-back PN junction. A DMOS device is provided in a high-voltage region of the integrated device to serve as a power device, a low-voltage device is provided in a low-voltage region thereof to serve as a half-bridge driving circuit and a protection circuit, and an LDMOS device is provided in a level shift region thereof to control the potential of a substrate of the driving circuit. Further comprised is a preparation method for the integrated device. The present invention eliminates the impacts of potentials between silicon-carbide high and low-voltage devices, thereby improving the performance and reliability of silicon-carbide half-bridge driving circuits.
H01L 27/06 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
H01L 21/82 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
222222 oxide layer and the third metal electrode are located between the second n-GaN region and a fourth metal electrode; and the third metal electrode is connected to the first metal electrode. The second n-GaN region and the third metal electrode alleviate the edge effect.
H10D 30/47 - FETs having zero-dimensional [0D], one-dimensional [1D] or two-dimensional [2D] charge carrier gas channels having 2D charge carrier gas channels, e.g. nanoribbon FETs or high electron mobility transistors [HEMT]
H10D 62/10 - Shapes, relative sizes or dispositions of the regions of the semiconductor bodiesShapes of the semiconductor bodies
H10D 64/23 - Electrodes carrying the current to be rectified, amplified, oscillated or switched, e.g. sources, drains, anodes or cathodes
43.
BRIDGE SCOUR FORMULA OPTIMIZED RECONSTRUCTION METHOD BASED ON SYMBOL REGRESSION
A bridge scour formula optimized reconstruction method based on symbol regression. The method comprises: obtaining statistical data of bridge scour, and separately using the statistical data as a training set and a test set; determining an initial structure of a bridge scour formula; firstly, determining a candidate operator, then introducing a function group having significant physical importance and a statistical relationship in scour, and determining a candidate operation variable; by using a symbol regression method based on genetic programming, generating an optimization formula by using data of the training set; adjusting parameters and generating an alternative formula group; and, on the basis of the test set, performing formula effect evaluation and filtering out a formula form having an optimal predicted effect and the simplest formula structure. On the basis of existing standard formulas, by using a symbol regression method based on a genetic programming algorithm, a machine learning method having a nonlinear representation capability is fused, in order to more accurately mine rich features in data. Meanwhile, by combining prior knowledge of scour and a physical relationship, prediction performance and generalization of a scour calculation formula can be improved.
G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
44.
BRIDGE SCOURING SINGLE-PHASE FLOW CALCULATION METHOD BASED ON PHYSICAL INFORMATION NEURAL NETWORK
Disclosed in the present invention is a bridge scouring single-phase flow calculation method based on a physical information neural network. The method comprises the following steps: selecting a training sample and a prediction sample, and obtaining corresponding coordinate data; using the coordinate data of the training sample as input and feeding same into a first neural network for training, outputting a sediment elevation change, and calculating a corresponding riverbed elevation; using the corresponding riverbed elevation as part of input and feeding same into a second neural network for training, and outputting corresponding flow field parameters; after training errors of the two networks are converged, obtaining two trained concatenated neural networks; inputting the coordinate data of the prediction sample into the trained first neural network, performing forward calculation to output a corresponding sediment elevation change, and calculating a corresponding riverbed elevation; and using the riverbed elevation of the prediction sample and randomly extracted points within a certain range above the riverbed elevation as input of the trained second neural network, and performing forward calculation to output corresponding flow field parameters. The present invention has wide applicability.
G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
45.
METHOD FOR IDENTIFYING MORPHOLOGICAL FEATURES OF UNDERWATER PILE GROUP OF BRIDGE ON BASIS OF THREE-DIMENSIONAL SONAR POINT CLOUD
Disclosed in the present invention is a method for identifying morphological features of an underwater pile group of a bridge on the basis of a three-dimensional sonar point cloud, comprising the following steps: collecting point cloud data of the three-dimensional morphology of underwater pile foundations of a bridge: using a three-dimensional real-time sonar system-mounted survey vessel to perform multi-directional scanning around the underwater pile foundations of the bridge and performing real-time stitching, so as to acquire point cloud data of the complete morphology of the underwater pile foundations; on the basis of the point cloud data of the complete morphology of the underwater pile foundations, performing pile foundation extraction by means of a point cloud minimum cut method, and on the basis of a single pile foundation extracted after segmentation, projecting the pile foundation point cloud to an XOY plane to obtain a planar pile foundation point cloud; on the basis of the planar pile foundation point cloud, performing pile foundation morphological feature identification by means of an iterative MAD method; and on the basis of the identification result, mapping a complete pile foundation morphological feature point cloud back to an original three-dimensional space on the basis of elevation information so as to obtain a three-dimensional pile foundation point cloud having complete morphological features. The present invention can implement accurate identification of complete pile foundation point cloud morphological features.
G01S 7/539 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
G01S 15/06 - Systems determining position data of a target
46.
VOLTAGE CONTROL AND REGULATION CIRCUIT FOR LOW-COST AND FAST RESPONSE TO VOLTAGE SAG
The present invention relates to the technical field of basic electronic circuits, and particularly solves the problems of excessive impact on system performance and poor flexibility of on-chip solutions for coping with voltage sags. Disclosed is a voltage control and regulation circuit for low-cost and fast response to a voltage sag. The circuit comprises: a voltage monitoring unit, a current prediction unit, a voltage loop controller, a current loop controller, a clock gating circuit, and a performance-aware voltage controller. The voltage is regulated in real time by means of a fully-closed-loop and double-loop architecture, thereby greatly reducing the performance cost during the regulation; the voltage loop controller and the current loop controller are jointly used, and different control parameters are used to respectively fit frequency regulation amounts corresponding to the voltage and the current, thereby implementing a flexible double-closed-loop control strategy; the clock gating circuit is used to process the frequency regulation amounts, and the working frequency of a controlled object can be quickly controlled by means of clock enabling; the performance-aware voltage controller and the clock gating circuit are jointly used, so as to achieve the objective of simply and efficiently countering voltage sags.
G05F 1/56 - Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
47.
ON-CHIP VOLTAGE PREDICTION CIRCUIT BASED ON POWER DELIVERY NETWORK PARAMETERS
Disclosed is an on-chip voltage prediction circuit based on power delivery network (PDN) parameters, aiming to solve the problem in traditional chips that the voltage monitoring circuit has a delay of several cycles when measuring on-chip voltage, and voltage prediction methods based on historical data have relatively low accuracy. The circuit comprises: an on-chip PDN impedance scanning module, an on-chip voltage monitoring module, an on-chip PDN parameter table storage module, an on-chip predictive digital power meter, and an on-chip voltage prediction calculation module; a physical model from historical voltage and predicted current information to predicted voltage information is established; by quantizing the model and integrating same with the voltage monitoring circuit and the predictive digital power meter, on-chip deployment of the voltage prediction circuit is implemented, and the effect of predicting future on-chip voltage is achieved.
An adaptive variable-structure duct robot motion control method based on environmental sensing. A duct robot is a dual-swing-arm tracked mechanism, and onboard sensing devices include a depth camera, an IMU, a wheel speed sensor and a TOF module. The method comprises: a depth camera capturing an image of the interior of a duct to perform scenario recognition, segmenting planar and curved surfaces in the image on the basis of scenario recognition results, and extracting edge lines of the duct; using the edge lines to calculate the width of a straight duct, the curvature of a curved duct, the angle of a slope and the height of a step, in order to determine the passability of a robot; designing a path planner and a swing arm planner to generate a reference trajectory and a swing arm angle sequence of the robot, performing smoothing processing, and inputting the smoothed reference trajectory and swing arm angle sequence into an MPC motion controller; using data from the depth camera, an IMU and a wheel speed sensor to estimate the position and state of the robot by means of an ESKF algorithm, and inputting estimation results and a collision warning signal from a TOF module into the MPC motion controller in real time; and finally, outputting control signals for a locomotion electric motor and a swing arm electric motor. Thus, the adaptive variable-structure and autonomous motion of a robot in different scenarios is realized.
The present invention relates to an adaptive sensing-based lightweight monitoring method for a fine crack in a complex background region. The method comprises the following steps: step S1, on the basis of region division, performing automatic acquisition of crack information, wherein PTZ camera sensors are used to automatically perform block-wise acquisition on crack regions; step S2, performing an adaptive complex scale calibration process, using a multi-scale template matching algorithm to adaptively correct distortion information of all regions, and performing real-scale conversion from pixel precision; step S3, constructing a lightweight crack segmentation network to process data processed in step S2; and step S4, by means of a quantitative crack-tracking algorithm based on Euclidean distance similarity classification, performing real-time monitoring on each piece of crack dynamic information. Compared with the prior art, the present invention has advantages such as achieving efficient, accurate, and online monitoring and analysis of cracks.
CONDUCTIVE CHANNEL STRUCTURE OF SILICON CARBIDE DEVICE, AND FULLY INTEGRATED SILICON CARBIDE DEVICE AND FULLY INTEGRATED MANUFACTURING PROCESS THEREFOR
A conductive channel structure of a silicon carbide device. The conductive channel structure is a first-conductivity-type conductive channel structure (5), and comprises a first-conductivity-type lower-layer channel region (5a) provided in the middle of a second-conductivity-type buffer layer (3) of a silicon carbide device, wherein a first-conductivity-type sheet region (5a') is provided on the first-conductivity-type lower-layer channel region (5a), and the top of the first-conductivity-type sheet region (5a') is located on the upper surface of the second-conductivity-type buffer layer (3). Also disclosed are a fully integrated silicon carbide device and a fully integrated manufacturing process therefor. The present invention has the advantages of high withstand voltage and low channel resistance.
H01L 29/78 - Field-effect transistors with field effect produced by an insulated gate
H01L 21/336 - Field-effect transistors with an insulated gate
H01L 29/10 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
H01L 29/16 - Semiconductor bodies characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic System in uncombined form
51.
DUAL-GATE DIRECT-DRIVE CIRCUIT OF DEPLETION-MODE WIDE-BANDGAP POWER DEVICE
The present invention relates to the field of integrated circuits. Disclosed is a dual-gate direct-drive circuit of a depletion-mode wide-bandgap power device. A first gate controls the device to enter an on/off state, and a second gate controls a standby state of a system. The circuit comprises an isolated gate driving chip, an isolated transformer, a dual-gate wide-bandgap power device, and an enhancement-mode semiconductor device, wherein the second gate of the dual-gate wide-bandgap power device is connected to a source of the enhancement-mode semiconductor device, and a source of the dual-gate wide-bandgap power device is connected to a drain of the enhancement-mode semiconductor device. The dual-gate wide-bandgap power device comprises the first gate and the second gate of a spaced trench structure. The present invention realizes a forward-voltage direct-drive function of the depletion-mode power device, and also fully exerts high-frequency switching characteristics and high blocking voltage endurance capability of the wide-bandgap semiconductor material; and the depletion-mode wide-bandgap power device has high gate voltage working range, high gate reliability, low leakage current, and high reverse freewheeling capability.
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
H02M 1/32 - Means for protecting converters other than by automatic disconnection
PIDPIDD of each sub-network layer of the model, solving the problem of manual parameter adjustment in a PID control algorithm, allowing for a greater adaptive capacity and higher recognition precision, and being able to quickly adapt to new tasks.
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
53.
Conductive channel structure for SiC devices, fully integrated SiC device and fully integrated manufacturing process thereof
A conductive channel structure for SiC devices, a fully integrated SiC device and a fully integrated manufacturing process thereof are provided. The fully integrated SiC device features a low-voltage region, a first high-voltage region and a second high-voltage region separated by isolation structures on the same SiC-based chip, and integrates first and second conductivity type MOS devices. The first and second conductivity type devices employ first and second conductivity type conductive channels respectively with alternating N-type and P-type first or second conductivity type areas above them. The manufacturing process includes sequentially stacking a second conductivity type epitaxial layer and buffer layer on an N-type substrate; and within the second conductivity type buffer layer, arranging first conductivity type well regions, heavily doped regions, channel regions, second conductivity type well regions, isolation structures, heavily doped regions, and channel regions.
H10D 84/03 - Manufacture or treatment characterised by using material-based technologies using Group IV technology, e.g. silicon technology or silicon-carbide [SiC] technology
H10D 62/832 - Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge being Group IV materials comprising two or more elements, e.g. SiGe
H10D 84/83 - Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups or , e.g. integration of IGFETs of only field-effect components of only insulated-gate FETs [IGFET]
54.
THREE-DIMENSIONAL LASER POINT CLOUD-BASED CABLE FORCE MEASUREMENT METHOD FOR STAY CABLE
Disclosed in the present invention is a three-dimensional laser point cloud-based cable force measurement method for a stay cable. Stay cable actual measurement line shape fitting is performed by utilizing point cloud data, obtained by means of three-dimensional laser scanning, of the stay cable, and on the basis of a finite element calculation method, a line shape that is calculated by a stay cable finite element model and is the same as the actually measured line shape of the stay cable is found, thereby determining an actual cable force of the stay cable, and achieving the purpose of accurately measuring the cable force of the stay cable. According to the present invention, a three-dimensional laser scanning technology is introduced and applied to cable force measurement of a stay cable, and for the defects of a common cable force measurement method, the characteristics of non-contact measurement, high measurement precision, high measurement efficiency and the like of the three-dimensional laser scanning technology are utilized so as to achieve rapid measurement of the line shape and the section size of the stay cable. On the basis of finite element calculation and analysis, the three-dimensional laser point cloud-based cable force measurement method for the stay cable is provided, thereby achieving rapid and efficient measurement of the cable force of the stay cable.
G01L 5/04 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
55.
2 CATALYST FOR HYDRODEOXYGENATION OF BIOMASS GAS-SOLID SYSTEM, AND PREPARATION METHOD THEREFOR AND USE THEREOF
C07C 1/22 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms by reduction
A self-adaptive viscous damping wall includes upper and lower fixed ends, an outer box body, an inner steel plate, a viscous fluid, and a self-centering device. The inner steel plate has openings, and the inner steel plate is divided into vertical wide bands, and two side faces of the bands are shear faces of the inner steel plate. An upper end of the inner steel plate is fixed to the upper fixed end. The outer box body has an upper opening for accommodating the inner steel plate and the viscous fluid. A part of an inner surface of the outer box body corresponding to a horizontal movement interval of the shear face of the inner steel plate is a shear face of the outer box body, which is designed with a multi-section curved face, with a flat and straight middle portion and a gradually decreasing end portion.
E04B 1/98 - Protection against other undesired influences or dangers against vibrations or shocksProtection against other undesired influences or dangers against mechanical destruction, e.g. by air-raids
E04B 2/00 - Walls, e.g. partitions, for buildingsWall construction with regard to insulationConnections specially adapted to walls
E04H 9/02 - Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
57.
WRISTBAND DEVICE AND SYSTEM INTEGRATING GESTURE RECOGNITION FUNCTION AND CONTINUOUS BLOOD PRESSURE MONITORING FUNCTION
A wristband device and system integrating a gesture recognition function and a continuous blood pressure monitoring function. The wristband device uses a reusable electrode assembly (120) in a wearable wristband (100) to acquire wrist impedance distribution data and radial artery pulse impedance waveform data in two functional modes, and converts the biological impedance data into human body gestures and blood pressure information by means of an algorithm deployed in an upper computer (400) of the system, so as to monitor the human body physiological state. The wristband device and system use the reusable electrode array to integrate the two functions in one system, thereby reducing sensor volume, complexity and integration difficulty.
G06V 40/20 - Movements or behaviour, e.g. gesture recognition
A61B 5/0295 - Measuring blood flow using plethysmography, i.e. measuring the variations in the volume of a body part as modified by the circulation of blood therethrough, e.g. impedance plethysmography
G06F 3/04883 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
A61B 5/021 - Measuring pressure in heart or blood vessels
58.
FLEXIBLE REHABILITATION GLOVE BASED ON HYBRID ACTUATORS
The present disclosure discloses a flexible rehabilitation glove based on hybrid actuators. The flexible rehabilitation glove includes five hybrid actuators and an actuator control box, each hybrid actuator includes an actuator end mounting seat, a flexible actuator, a TPFE water pipe, a flexible actuator front section mounting seat, a flexible actuator air pipe, an air pipe connecting seat II, an SMA spring actuator, an air pipe connecting seat I and a cooling water pipe, the control box includes an air pump, a filter, a water pump and a water tank, a proportional valve and a control circuit board inside, and includes an actuator control box body, a control box cover, a main switch, a button and a voltage display outside, and the filter is connected to the air pump and the electrical proportional valve respectively. The flexible rehabilitation glove has the characteristics of large output torque and high force-mass ratio of SMA of the flexible actuator, the problem of only one-way movement of a traditional flexible actuator is solved, the fingers of the patient are driven to move in two directions, and sufficient working torque and working space in the two directions are provided for the patient.
The present invention relates to the field of virtual pre-assembly matching of bridge engineering components based on 3D point clouds, and particularly relates to a method for virtual pre-assembly matching of prefabricated beams based on design-measured point cloud models. An oriented bounding box is computed respectively for 3D point clouds of two prefabricated beams with assembly relationship therebetween, and two point cloud slices and design point cloud are formed; the two point cloud slices are respectively registered with the generated design point cloud by the iterative closest point algorithm; boundary features and corner features of a pre-assembly interface of two components to be assembled are fitted and extracted; and coarse matching and fine matching of the assembly interface are achieved by the Procrustes analysis algorithm and the iterative closest point algorithm in sequence, a matching degree error of the interface is computed, and an assembly result is evaluated.
Disclosed in the present invention are a ternary composite high-efficiency antiviral coating material for a surface of a textile and a preparation method therefor. The coating material is prepared by mixing a ternary composite high-efficiency antiviral aggregate powder with a coating slurry, wherein the composition of the ternary composite high-efficiency antiviral aggregate powder is a complex aggregate of small-sheet-diameter graphene oxide, organic antiviral molecules and superfine titania, and the aggregate has a size not larger than 5 micrometers and is a three-dimensional loose aggregate; the organic antiviral molecules are grafted onto the surface of the small-sheet-diameter graphene oxide; and the coating slurry is a water-based coating finishing agent.
D06N 3/00 - Artificial leather, oilcloth, or like material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
D06M 11/74 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphiteTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbidesTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with graphitic acids or their salts
D06M 11/46 - Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic TableTitanatesZirconatesStannatesPlumbates
61.
HIGH-SENSITIVITY SENSOR SYSTEM BASED ON PRINCIPLE OF PT SYMMETRY, AND DETECTION METHOD THEREFOR
A high-sensitivity sensor system based on the principle of PT symmetry. The system comprises: a loss-end/sensitive-end module, which is formed by means of connecting an inductor, a capacitor and a positive resistor in parallel; and a gain-end/readout-end module, which is formed by means of connecting an inductor, a capacitor and a nonlinear negative resistor in parallel. Element parameters of a gain end and a loss end meet the requirements of a PT symmetric electronic system; signal transmission between the two ends is implemented by means of inductive coupling; the system operates in a weak coupling area by means of controlling the distance between inductor coils; and in an initial state, the gain end and the loss end are in a PT symmetric state. When the sensitive capacitance of the loss end/sensitive end changes due to the weak influence of a parameter to be measured, the voltage of the gain end is in a greatly rising state, and the resonant frequency of the system remains unchanged, such that high-sensitivity wireless passive detection under a weak coupling condition can be realized. Further disclosed is a detection method for a sensor system based on the principle of PT symmetry.
G01D 5/12 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means
H02J 50/12 - Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
62.
CIRCULARLY POLARIZED ARRAY ANTENNA AND WIRELESS COMMUNICATION DEVICE
CHINA MOBILE GROUP DESIGN INSTITUTE CO., LTD. (China)
CHINA MOBILE COMMUNICATIONS GROUP CO., LTD. (China)
SOUTHEAST UNIVERSITY (China)
Inventor
Cao, Tianyang
Huang, Yaoming
Ji, Tianxiang
Zhu, Likun
Liu, Jingdi
Wang, Jing
Tang, Limin
Xu, Deping
Yu, Zhiqiang
Xu, Hengfei
Abstract
The present application relates to the technical field of antennas, and provides a circularly polarized array antenna and a wireless communication device. The array antenna comprises: a first substrate, any antenna unit symmetrically arranged on the first substrate being a circularly polarized antenna unit; a second substrate, at least one first coupling gap being formed in any resonant cavity symmetrically arranged on the second substrate, and any first coupling gap being overlapped with a first target projection corresponding thereto; and a third substrate provided with an H-shaped junction and a port line, the H-shaped junction and the port line being communicated with each other, at least one second coupling gap being formed in the H-shaped junction, and any second target projection being located in the resonant cavity corresponding thereto. The circularly polarized array antenna provided by the present application can obtain relatively good batch consistency, has an extremely stable radiation pattern, good polarization purity and high radiation efficiency, and can achieve high-stability connection and high-efficiency transmission of mobile communications in millimeter wave bands.
H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
Disclosed by the present disclosure is a skywave massive MIMO beam structure precoding-based transmission method and a system thereof. The skywave massive MIMO communication base station generates a transmitted signal by utilizing a beam structure precoder, and implements a downlink precoding transmission. The beam structure precoder is composed of a low dimensional beam domain precoder of each user, a beam mapping module of each user, and a beam modulating module, the low dimensional beam domain precoder of each user is a precoder on a beam set of each user, the beam mapping module of each user is configured to map a low dimensional beam domain precoding signal of each user to a complete beam domain transmitted signal, the beam modulating module is configured to multiply a beam matrix by a beam domain transmitted signal vector, and the beam domain transmitted signal vector is a sum of beam domain transmitted signal vectors for each user. The present disclosure can solve the design and implementation complexity problem of skywave massive MIMO downlink precoding transmission, significantly improving the spectrum and power efficiency, transmission rate, and transmission distance of sky wave communication.
H04B 7/0456 - Selection of precoding matrices or codebooks, e.g. using matrices for antenna weighting
H04B 7/06 - Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
H04W 72/044 - Wireless resource allocation based on the type of the allocated resource
64.
DENSE ELECTRODE FABRIC HAVING MULTI-LAYER MICRO-NANO STRUCTURE, MANUFACTURING METHOD THEREFOR, AND ELECTROCHEMICAL DEVICE
Disclosed in the present invention are a multi-layer micro-nano dense electrode fabric, a manufacturing method therefor, and an electrochemical device. In the present invention, a multi-layer micro-nano structure is manufactured on a surface of a carbon nano material conductive fiber by means of electrostatic spinning and liquid phase coating methods, and the conductive fiber is used to prepare a densely arranged alternating electrode fabric by using a weaving method. The fabric has a high specific surface area, and the thickness of the fabric does not exceed 0.1 mm. The fabric is loaded with a nano-particle electrochemical oxidation catalyst, is used for wastewater treatment by an electrolytic method, is made into a wastewater treatment device, has the characteristics such as high water flux, low energy consumption, low cost, bending resistance, and rubbing resistance, is suitable for various liquid-phase electrolytic water purification devices, and is also suitable for indoor gas pollutant elimination and infectious disease pathogen inactivation. The technology meets a wide range of market demands.
D03D 1/00 - Woven fabrics designed to make specified articles
D03D 15/533 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads antistaticWoven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads electrically conductive
C02F 1/46 - Treatment of water, waste water, or sewage by electrochemical methods
65.
METHOD FOR FLEXIBLY UTILIZING RAIL TRANSIT STATION AREA PLOT UNDER THREE-DIMENSIONAL SLOW-TRAFFIC PATH GUIDANCE
The present invention belongs to the technical field of TOD city design for rail transit stations. Disclosed is a method for flexibly utilizing a rail transit station area plot under three-dimensional slow-traffic path guidance. The method for flexibly utilizing a rail transit station area plot comprises: determining a design scope; at the macroscopic level, selecting a plot pattern mode, the plot pattern mode comprising three plot pattern modes, namely, a grid pattern, a radial grid pattern, and a composite hybrid comprehensive layout formed by integrating historical contexts; at the mesoscopic level, selecting a plot scale mode, the plot scale mode comprising three plot scale modes, namely, a small-scale plot, a large-scale plot, and a composite scale; at the microscopic level, selecting a path layout mode, comprising layout modes of an along-plot path, a through-plot path, and a public square green space path, achieving plot subdivision and merging at the ground level, achieving plot integration and interconnection at the underground level, and achieving plot stitching and connection at the above-ground level; and combining the plot pattern, the scale mode, and a micro-path layout mode to carry out flexible utilization of plots.
G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
A multi-parameter collaboration-based rail transit station area spatial renewal intensity definition method and system, relating to the technical field of rail transit station area spatial renewal intensity evaluation. The method comprises: receiving an initial sample area, and performing range definition on the initial sample area to obtain a land parcel in a station area; dividing the land parcel in the station area to obtain different renewal types of land parcels, and using the different renewal types of land parcels to calculate station renewal intensity definition indexes; performing correlation analysis on the station renewal intensity definition indexes to obtain analysis results, generating different analysis groups according to the analysis results, and obtaining rail transit station intensity characteristic research elements on the basis of the analysis groups, wherein the rail transit station intensity characteristic research elements correspond to the station renewal intensity definition indexes; and receiving sample stations, taking the sample stations as input variables according to the station renewal intensity definition indexes corresponding to the different rail transit station intensity characteristic research elements, and performing clustering analysis to obtain a definition result.
The present invention relates to a power device having low on-resistance and a manufacturing method therefor. The power device having low on-resistance comprises various second conductive-type electrical field shielding regions (9), various metal components (11), and various conductive source region components of a preset thickness, as well as a bottom metal layer (8), a first conductive-type substrate (1), a first conductive-type epitaxial layer (2), and a second conductive-type body region layer (5) which are sequentially stacked from bottom to top. The power device is constructed according to design implementation. By arranging a second conductivity-type electrical field shielding region (9) below a gate trench (10), the electrical field can be effectively shielded, so that the reverse electrical field intensity borne by a gate dielectric layer (3) of the device is greatly reduced, increasing the breakdown voltage of the device and enhancing the reliability of the device. Meanwhile, the second conductive-type electrical field shielding regions (9) are designed to be in contact with the second conductive-type body region layer (5) connected to a corresponding gate trench node, so that the problems of reduced switching speed, increased on-resistance, and the like caused by the shielding region are solved from cellular structure design.
Disclosed in the present application is a blockchain-based distributed ensemble learning method. On the basis of a designed three-layer blockchain structure, which consists of a mini block, an ensemble block and a key block, by means of a consensus protocol, a miner in a network is enabled to train a base model on a training set after performing sampling with replacement, and aggregates models from other miners; and finally, information of the base model and information of an ensemble model are recorded in a blockchain, such that the whole process of model training, model ensemble and model evaluation is fused into a blockchain consensus, and the whole ensemble learning process is automatically executed in a blockchain network. In this way, the present application can increase the utilization rate of the computing power in a blockchain network by means of a proof-of-useful-work mechanism based on machine learning, and a center node is prevented from being introduced during a model aggregation process, thereby maximizing the degree of decentralization of a blockchain.
The present invention relates to the field of electronic devices of wireless communication systems. Disclosed is an ultra-wideband and high-protection-efficiency filtering energy selective surface, comprising one or more layers of reflecting surfaces; each reflecting surface is mainly composed of a plurality of metal sheets which are located on the same plane, have the same shape and are arranged in central symmetry; a gap for electrical isolation is formed between every two adjacent metal sheets; each gap is provided with a PIN diode; the anodes and cathodes of all the PIN diodes are arranged in a clockwise or counterclockwise direction; and all the gaps form an interconnected gap structure on the plane where the reflecting surface is located. The ultra-wideband and high-protection-efficiency filtering energy selective surface can be achieved by a first-order filtering energy selective surface unit or a second-order filtering energy selective surface unit. The filtering energy selective surface of the present invention has a small surface thickness and a simple structure, can achieve fast roll-off filtering for low-power signals, achieve an ultra-wide suppression stopband, and achieve ultra-wideband and high-efficiency protection for high-power electromagnetic waves.
Disclosed in the present invention are a rapid measurement device and measurement method for the number concentration of a micro-plastic based on on-chip imaging. According to the present invention, a commercial digital image sensor chip having a small pixel size and a high pixel number is used to construct a micro-plastic measurement device, a micro-plastic sample can be directly loaded to a photosensitive surface of the image sensor chip, and the shadow image of the micro-plastic projected onto the chip can be rapidly obtained. On this basis, the number of micro-plastics in the image is counted by means of a manual analysis method or a machine learning method, and the number concentration of the micro-plastics is calculated on the basis of the volume of the micro-plastic sample, thereby overcoming the bottleneck problem of existing micro-plastic analysis methods being difficult in directly and rapidly collecting wide-field-of-view and high-resolution images of samples. The micro-plastic measurement device of the present invention is portable, the method is simple and easy to popularize, a new technical support is provided for on-site monitoring of environmental micro-plastic pollution, and the present invention can also be applied to rapid measurement of the number concentration of micron particles other than micro-plastics.
Disclosed in the present invention is a stepped elastic beam for a six-axis force sensor. The stepped elastic beam comprises a central platform, a stepped main beam, a floating beam, rims, and strain gauges, wherein the central platform is connected to the floating beam on the outer side by means of the stepped main beam, and the rims at four corners are connected to the floating beam; 24 strain gauges are pasted to the stepped main beam to form six sets of Wheatstone bridges; and when the force/torque of a certain dimension acts on the center of the stepped elastic beam, the sensor deforms, and the resistance value of the strain gauge at a corresponding position is changed, such that an output voltage of a corresponding bridge is changed, and the numerical value of the force/torque of the dimension can be obtained by measuring the change of the voltage. A structure is simple, the sensitivity is high, and the inter-dimensional coupling is low.
G01L 5/1627 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance of strain gauges
72.
FLOW CELL REACTION SYSTEM BASED ON TUBULAR PERMEABLE DIFFUSION ELECTRODES, AND OPERATION METHOD
The present invention relates to a flow cell reaction system based on tubular permeable diffusion electrodes, and an operation method. The system comprises a flow cell reactor and a gas-liquid separation device; the flow cell reactor comprises a cathode chamber and an anode chamber which are separated by a proton exchange membrane; the cathode chamber is internally provided with multi-channel tubular permeable diffusion electrodes which are arranged in a linear or array mode and have a plurality of gas guide channels, each tube wall is of a porous layered wall structure, the outlet end of each multi-channel tubular permeable diffusion electrode is blocked, a reaction gas is guided into the inlet end of each multi-channel tubular permeable diffusion electrode through a gas guide tube assembly, and the gas is forced to diffuse to the surface of each electrode through the porous layered wall under the action of a pressure so as to form a gas-liquid-solid three-phase reaction interface; the gas-liquid separation device is used for carrying out gas-liquid separation on a gas-liquid mixture output from the cathode chamber, the separated gas and liquid are respectively returned into the multi-channel tubular permeable diffusion electrodes and the cathode chamber to form a loop, and detection points are provided on the loop to carry out product recovery on the basis of detection conditions. The present invention achieves efficient and stable operation of electro-reduction reaction systems, and is suitable for large-scale industrial application.
C25B 9/23 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
A variable stiffness hand exoskeleton device based on antagonistic driving, includes a power mechanism, a support base, a spring-link composite transmission mechanism, and a distal finger sleeve connected to a power output end of the spring-link composite transmission mechanism for fingers. The power mechanism drives the fingers to perform rotational movements through the spring-link composite transmission mechanism. The distal finger sleeve is fixed to a distal joint periphery of a finger joint using a first elastic adjustment band, and provides force feedback to an end of the finger joint under driving force of a link structure. An inner surface of the support base is contoured to match a palm, and a back of the support base is provided with a rotary support seat and a motor fixing seat. A motor group of the power mechanism is mounted on the motor fixing seat.
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 3/00 - Conversion of DC power input into DC power output
H03K 17/16 - Modifications for eliminating interference voltages or currents
H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
75.
PRIVACY-PRESERVING METHOD FOR CONSTRUCTING BUILDING THERMAL DYNAMIC AGGREGATION MODEL
Disclosed in the present invention is a privacy-preserving method for constructing a building thermal dynamic aggregation model, comprising: firstly, establishing a thermal dynamic model of a single building area, and establishing a building thermal dynamic aggregation model on the basis of an aggregation equation; then on the basis of a measurement equation, carrying out parameter estimation by means of a least squares method, and introducing a regularization term to solve the sparsity problem of aggregation coefficients, to obtain a compact parameter estimation model of the building thermal dynamic aggregation model; and finally, establishing a privacy-preserving parameter estimation method of the building thermal dynamic aggregation model. According to the present method, aggregation modeling is performed on massive buildings by building load aggregators to participate in operation and control of energy systems; moreover, privacy information of building users can be protected from leakage, thereby promoting the mining of building thermal inertia and improving the flexibility of operation and regulation of power systems.
gsr1gsr2gsr1gsr2gsr1gsr2gsr2 in the NMOS clamping circuit, respectively, so as to recover energy in a turn-off process of the driving circuit and use the recovered energy for a turn-on process of the driving circuit. According to the present invention, a small number of devices are used, thereby saving the cost and space and facilitating miniaturization and integration. In addition, in the present invention, control signals are simple, the complexity of the control signals is reduced, and the system stability is improved.
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
77.
SPACE CAPACITY INCREASE POTENTIAL ANALYSIS METHOD AND SYSTEM FOR URBAN HISTORICAL FEATURE CONSERVATION AREA
The present invention relates to the field of feature conservation area renewal, and provides a space capacity increase potential analysis method and system for an urban historical feature conservation area. The space capacity increase potential analysis method for the urban historical feature conservation area comprises: inputting an urban area to be studied, and delimiting, within the range, a land parcel that requires a capacity increase study; determining influential solar elements and line of sight elements around the land parcel that requires the capacity increase study, and generating a three-dimensional model by taking a land parcel as a unit; generating a solar envelope of the urban area on the basis of the solar elements, and generating a line of sight envelope of the urban area on the basis of the line of sight elements; performing intersection processing on the solar envelope and the line of sight envelope to generate a height control planar gradient map; and on the basis of the height control planar gradient map, predicting potential texture morphology, and performing quantitative presentation to obtain a data index of an adjusted land parcel. In this way, the problem in the prior art that a precise analysis method is required to perform an effective quantitative analysis on solar and line of sight elements in a designed land parcel is solved.
G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
78.
PRIVACY-PRESERVED METHOD FOR CONSTRUCTING AGGREGATE THERMAL DYNAMIC MODEL OF BUILDINGS
Disclosed is a privacy-preserved method for constructing an aggregate thermal dynamic model of buildings, including the steps of: establishing a thermal dynamic model of one building region, and establishing an aggregate thermal dynamic model of buildings based on an aggregation equation; performing parameter estimation using a least square method based on a measurement equation, introducing a regular term to solve a sparsity problem, and obtaining a parameter estimation model in a compact form for the aggregate thermal dynamic model of buildings; and establishing a privacy-preserved parameter estimation method for the aggregate thermal dynamic model of buildings. Based on the technique, the aggregate modeling is performed on numerous buildings by a building load aggregator to participate in the operation and control of an energy system while preserving privacy of building users, promoting the mining of thermal inertia of buildings and enhancing the flexibility of operation and regulation of a power system.
G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
79.
Method of preparing high-performance green building material based on combustion flue gas carbon dioxide mineralization
2 for mineralization reaction, and taking out reacted ceramic granules and putting into drying oven for drying to prepare a cold-bonded lightweight aggregate; supplementing water to the lightweight aggregate to perform hydration reaction and obtain a finished product.
C04B 40/02 - Selection of the hardening environment
C04B 28/00 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
C04B 111/00 - Function, property or use of the mortars, concrete or artificial stone
80.
ANALYTICAL METHOD FOR DYNAMIC ANALYSIS OF NATURAL GAS NETWORK
Disclosed is an analytical method for dynamic analysis of a natural gas network in the field of energy system modeling and operational analysis, which includes establishing adynamic model of natural gas transmission according to the conservation equations, and reconstructing the dynamic model into the equations in a heat conduction equation form. The present disclosure directly constructs an analytical method for dynamic analysis of a natural gas network, avoiding approximation errors, numerical dispersion, and dissipation compared with the traditional numerical methods. The discretization process is avoided during the solution, greatly improving the computational efficiency and solution accuracy of dynamic analysis of the natural gas network.
G06F 30/18 - Network design, e.g. design based on topological or interconnect aspects of utility systems, piping, heating ventilation air conditioning [HVAC] or cabling
A horizontal Hall device and a preparation method therefor. The horizontal Hall device comprises: a substrate layer and a BOX layer on the substrate layer; an epitaxial layer is provided on the BOX layer; a well layer is provided on the epitaxial layer; an STI layer is provided on the well layer; sensing electrode pairs and bias electrode pairs are provided on the STI layer; grounding electrodes are provided on the epitaxial layer; and a current blocking layer is provided between every adjacent sensing electrode and bias electrode. The preparation method for the horizontal Hall device comprises: preparing a substrate provided with the BOX layer and the epitaxial layer; performing deep-trench etching on the epitaxial layer, the bottom of the deep trenches being in direct contact with the BOX layer, and filling the deep trenches to form the current blocking layers; performing photolithography and doping on the upper part of the epitaxial layer to form the well layer; performing shallow trench etching on the well layer area to form a shallow trench located on the well layer, and depositing silicon dioxide to form the STI layer; and doping a sensing electrode pair area and a bias electrode pair area to form a heavily doped contact area, and doping the epitaxial layer to form a heavily doped contact layer.
A horizontal Hall device includes a substrate layer and a BOX layer arranged on the substrate layer, where an epitaxial layer is arranged on the BOX layer, a well layer is arranged on the epitaxial layer, an STI layer is arranged on the well layer, a pair of induction electrodes and a pair of bias electrodes are arranged on the STI layer, ground electrodes are arranged on the epitaxial layer, and current barrier layers are arranged between the induction electrodes and the adjacent bias electrodes.
The present disclosure relates to a hysteretance component, which is designed based on its definition, calculation formulas, and port characteristics. By increasing or decreasing hysteretance components in a magnetic circuit, the intensity and effect magnitude of magnetic hysteresis in a vector magnetic circuit can be estimated and controlled from the perspective of magnetic circuit, allowing the vector state of a magnetic flux to be consistent with the desired state. Based on this, an application method is proposed, involving that a target magnetic circuit is formed by connecting reluctance, magductance, and hysteretance components in series, and magnetic circuit parameters of the three components are utilized to quantitatively express magnetization, eddy current, and magnetic hysteresis phenomena, enabling technicians to selectively alter the operating characteristics of the magnetic circuit, vector magnetic quantities, and power of the magnetic circuit by adjusting the parameters.
H01F 27/34 - Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
G01R 33/14 - Measuring or plotting hysteresis curves
H01F 41/04 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets for manufacturing coils
84.
IMPROVED GOSSIP-PROTOCOL-BASED METHOD, DEVICE, EQUIPMENT AND MEDIUM FOR INCENTIVIZING BLOCK PROPAGATION
An improved gossip-protocol-based method, a device, a piece of equipment and a medium for incentivizing block propagation. By improving the Gossip protocol and embedding block propagation rewards, the block forwarding process is accelerated. The designed signature chain structure records the block forwarding path and ensures that the path information is not tampered with. By combining the signature chain structure with the block generation process, the rewards are ensured to be truly and reliably distributed. A block propagation reward distribution strategy is designed to prevent forwarding nodes from adding pseudonyms in the propagation path. Therefore, the method can reduce the blockchain stale rate and enhance the scalability and consensus performance of the blockchain by accelerating block propagation in the presence of selfish nodes, and addresses the problem that selfish nodes refuse to forward blocks to save communication consumptions in the current blockchain network.
A laterally-diffused metal-oxide-semiconductor device (1), comprising: a substrate (11); a body region (1131) and a drift region (1132) arranged in the substrate (11) in a first direction, a drain region (1133) being provided in the drift region (1132), and a source region (1134) being provided in the body region (1131); a first dielectric layer (121) arranged on the substrate (11) and covering at least part of the body region (1131) and part of the drift region (1132); a first field plate (13) arranged on the side of the first dielectric layer (121) that is away from the substrate (11), the orthographic projection of the first field plate (13) on the substrate (11) being located between the body region (1131) and the drain region (1133), and covering part of the drift region (1132); and a first high-K dielectric layer (141) arranged on the side of the first dielectric layer (121) that is away from the substrate (11) and connected to the end of the first field plate (13) that is close to the drain region (1133), the orthographic projection of the first high-K dielectric layer (141) on the substrate (11) covering part of the drift region (1132).
The present invention discloses a method and system for evaluating post-earthquake damage of building groups based on interferometric synthetic aperture radar (InSAR). Method includes: determining an investigation region, acquiring pre- and post-earthquake radar images of a corresponding district, and acquiring radar datasets included in radar images; acquiring a radar line-of-sight (LOS)-direction deformation map of investigation region by processing pre- and post-earthquake radar images using D-InSAR; acquiring a deformation in a main earthquake direction by decomposing an LOS-direction deformation; drawing a deformation classification map of buildings; acquiring pre- and post-earthquake optical remote sensing images of investigation region, and locating post-earthquake collapsed buildings; locating collapsed buildings in deformation classification map, comparing optical remote sensing images with deformation classification map, and locating exact positions of collapsed buildings; and evaluating post-earthquake damage of the buildings by evaluating post-earthquake damage conditions based on position information of collapsed buildings and the deformation classification map.
The present invention discloses a rapid construction method and system for a wireless channel knowledge map. The present invention uses image restoration technology to construct a channel knowledge map, and, by means of recovering a corresponding pixel value in an image matrix, predicts channel knowledge of a specific position, so that channel related knowledge of a user equipment at any position in a target area can be acquired. By means of combining the similarity of an image restoration problem and a channel knowledge map construction problem, and using a Laplacian pyramid frequency band decomposition framework, an input environment map can be decomposed at different frequencies. According to the characteristics of different frequency components, a corresponding sub-network is designed for feature extraction, and finally, the channel knowledge map is reconstructed by means of inverse operation of the Laplacian pyramid. The wireless channel knowledge map construction method provided by the present invention not only implements higher construction precision at lower computational complexity, but also has strong generalization ability for various wireless communication scenarios.
A laterally diffused metal oxide semiconductor device, and a preparation method therefor. The laterally diffused metal oxide semiconductor device comprises at least one cellular structure (10), the cellular structure (10) comprising: a substrate (11); an N-type first well region (12), disposed in the substrate (11); a first section (121), a partition region (122) and a second section (123), provided in the first well region (12) in sequence along a first direction; a P-type first doped region (131) and a P-type second doped region (132), the first doped region (131) being located in the first section (121) and the second doped region (132) being located in the second section (123); and a P-type source region (141) and a P-type drain region (142) provided in the substrate (11) and located at two sides of the first doped region (131), respectively, along a second direction. The first direction is a width direction of a conductive channel, and the second direction is a length direction of the conductive channel.
The present invention relates to the field of energy system modeling and operation analysis. Disclosed is an analytical method suitable for dynamic analysis of a natural gas network, comprising: establishing a natural gas dynamic transmission model according to a conservation law equation of natural gas transmission, and reconstructing the natural gas dynamic transmission model into a natural gas dynamic heat conduction equation; using a method of variation of parameters to convert the natural gas dynamic heat conduction equation into a system of partial differential equations having homogeneous boundary conditions; determining a general analytic expression of the system of partial differential equations under a constant pressure boundary condition; and on the basis of the superposition property of natural gas transmission, an initial condition and boundary conditions, constructing a practical analytic expression of the natural gas dynamic transmission model based on the general analytic expression. In the present invention, the analytical method for dynamic analysis of the natural gas network is directly constructed, and compared with a conventional numerical method, avoids an approximate error and numerical dispersion dissipation; and a discrete process is avoided in solving, greatly improving the calculation efficiency and the solving precision of the dynamic analysis of the natural gas network.
Disclosed is a direct control method and system for an internal potential of a bridge arm of a new energy grid-tied inverter (GTI), the control method including the following steps. Measured values are obtained by measuring a port voltage and a port current of a GTI, instantaneous active and reactive power values are calculated, and a phase angle and amplitude reference of an internal potential of a bridge arm are obtained to generate reference values thereof. The internal potential of the bridge arm is estimated, and an estimated value used as a feedback signal, after being compared with the reference values, is sent to an internal potential controller to obtain a modulating signal, which is sent to a pulse width modulation (PWM) module, realizing direct control of the internal potential of the bridge arm. In the present disclosure, the dynamic performance of the GTI is improved while improving power quality.
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
The present invention relates to a targeted sensing-oriented twin substructure interaction method and system and the use. The method comprises: acquiring multi-element inspection and monitoring data and finite element influence line data of a main structure; on the basis of the inspection and monitoring data and the finite element influence line data of a non-key area, using a sparsity adaptive matching pursuit algorithm to solve a boundary condition of a key area, so as to achieve data fusion of a first level; for the key area, establishing a refined twin substructure finite element model taking into account the effect of structural degradation and, on the basis of the inspection and monitoring data and the finite element influence line data of the key area, correcting the material attribute of the refined twin substructure finite element model to achieve data fusion of a second level; and calculating a correction force on the basis of the boundary condition of the key area and the material attribute, and using the correction force as an equivalent external load to act on a node of a global finite element model, thus achieving the interaction between a substructure and the main structure. The present invention achieves mutual fusion and common communication between the monitoring data and the finite element model and the interaction between each substructure and the main structure.
G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
G06F 30/23 - Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
92.
TARGETED PERCEPTION-ORIENTED TWIN SUBSTRUCTURE INTERACTION METHOD AND SYSTEM, AND APPLICATION
The present invention relates to a targeted perception-oriented twin substructure interaction method and system, and application. The method includes: acquiring multivariate inspection and monitoring data and finite element influence line data of a main structure; solving, on the basis of the inspection and monitoring data and the finite element influence line data of a non-focus region, boundary conditions of a focus region; establishing, for the focus region, a refined twin substructure finite element model, and correcting material properties of the refined twin substructure finite element model on the basis of the inspection and monitoring data and the finite element influence line data of the focus region; and calculating a correction force on the basis of the boundary conditions of the focus region and the material properties, and using the correction force as an equivalent external load to act on nodes of a global finite element model.
A full-size alloy phase prediction method based on machine learning. The method comprises the following steps: (1) acquiring a large amount of data of a certain system of alloys by means of thermodynamic calculation, and calculating and generating phases and corresponding volume fractions by means of a given temperature and given alloy components; (2) using the given temperature and the given alloy components as input data and using the generated phases as output data, so as to construct a data set; (3) using the data set to train a machine learning model, so as to obtain a model that can highly precisely classify the phases of the system of alloys and predict the volume fractions of the phases of the system of alloys; and (4) storing the trained model for potential alloy design requirements.
G16C 60/00 - Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
A digital-integrated-circuit timing monitoring method based on a graph convolutional neural network. The method comprises: determining a plurality of candidate monitoring nodes in a target circuit, and the connection relationship between the plurality of candidate monitoring nodes (101); determining feature information of the target circuit on the basis of device property information of the plurality of candidate monitoring nodes (102); inputting into a trained target graph convolutional neural network model the feature information of the target circuit and the connection relationship between the plurality of candidate monitoring nodes, such that the graph convolutional neural network model outputs determination results of the plurality of candidate monitoring nodes, wherein the determination results comprise a first determination result indicating that a candidate monitoring node is a monitoring node, and a second determination result indicating that a candidate node is not a monitoring node (103); on the basis of the determination results, which are output by the graph convolutional neural network model, determining at least one effective monitoring node from among the plurality of candidate monitoring nodes (104); and performing timing monitoring on the target circuit on the basis of the at least one monitoring node (105).
Disclosed in the present invention is an aerial manipulator system for measuring the depth of cracks in the substructure of a reinforced concrete bridge, the system comprising a main human-computer interface device, an aerial manipulator, and an end effector, wherein the main human-computer interface device comprises a remote controller and a control computer; the aerial manipulator comprises a drone and a single-degree-of-freedom robotic arm; and the end effector comprises an ultrasonic crack depth measurement mechanism, a shock absorber and a force sensor. In the present invention, the aerial manipulator system is designed to be able to stably contact the substructure of a reinforced concrete bridge and automatically complete crack depth measurement procedures, thereby reducing the high-altitude operation risk and workload of bridge inspectors, and improving the efficiency of crack depth measurement operations.
Disclosed in the present invention is a URLLC multi-connectivity transmission and resource allocation method for industrial automation. The method comprises the following steps: S1, establishing a multi-connectivity technology-based URLLC system model; S2, setting constraint conditions of end-to-end transmission on the basis of quality of service requirements for an industrial automation application; S3, reporting the length of an information byte required for transmission, and determining a bandwidth optimization problem of multi-connectivity data transmission; and S4, executing a resource allocation algorithm to calculate an optimal cross-layer resource allocation solution for the multi-connectivity data transmission. According to the present invention, a URLLC multi-connectivity transmission and resource allocation method for industrial automation is established, to avoid the problem of cellular link failure caused by dynamic changes of channels in a traditional transmission mode; and under the constraints of end-to-end delay, reliability and maximum code length, an optimal cross-layer resource allocation method is provided, to minimize a bandwidth required for multi-connectivity transmission, thereby achieving the objective of saving spectrum resources.
The present invention relates to a magnetic capacitor element. The design of the magnetic capacitor element is implemented on the basis of the definition of the element, calculation formulas, and port characteristics. By adding or removing a magnetic capacitor element in or from a magnetic circuit, the strength of magnetic hysteresis in a vector magnetic circuit can be estimated and controlled from the perspective of the magnetic circuit, and the magnitude of the effect caused by magnetic hysteresis is controlled, so that a magnetic flux vector state in the magnetic circuit is consistent with a target magnetic flux vector state. Further, on this basis, an application method is proposed. The magnetic capacitor element is connected in series to a magnetic resistor element and a magnetic inductor element to form a target magnetic circuit. Magnetic circuit parameters corresponding to the three magnetic circuit elements quantitatively represent three physical phenomena, i.e., magnetic resistance, eddy current, and magnetic hysteresis, in the magnetic circuit. By changing different magnetic circuit parameters, a technician can change the operating characteristics of the magnetic circuit in a targeted manner, thereby purposefully changing the vector magnetic quantity and magnetic circuit power in the magnetic circuit.
G16C 60/00 - Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
G06F 30/23 - Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
98.
HIGH-DIMENSIONAL ALLOY PHASE DIAGRAM CONSTRUCTION METHOD
A high-dimensional alloy phase diagram construction method, comprising the following steps: (1) selecting a target alloy system, fixing some components, and setting component and temperature ranges; (2) on the basis of a given component step size and a given temperature step size, traversing the whole phase space to identify emerging phase types; (3) using a hash table technique, allocating a unique index to each possible component and temperature combination, to store a corresponding phase type; (4) traversing hash values of each phase type using a graph search algorithm, and identifying and separating each independent phase space; (5) completing storage of each phase space. The construction method provides an efficient and structured means for alloy design and research, and is suitable for ternary through N-ary alloy systems.
G16C 60/00 - Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
99.
CRITICAL PATH SORTING METHOD BASED ON GRAPH NEURAL NETWORK
The present invention relates to the technical field of calculation, estimation or counting. Disclosed is a critical path sorting method based on a graph neural network. The method comprises: first, obtaining a potential critical path set in a netlist by means of a static timing analysis tool; next, converting a netlist file comprising circuit function information into a graph data structure, and obtaining an initial training set on the basis of a relevant process configuration file; then, inputting the initial training set into a graph neural network for training to obtain a critical unit prediction model, wherein the critical unit prediction model consists of three parts, namely, a deep structure auto-encoder, a nonlinear attribute auto-encoder and a joint error reconstruction module; and finally, quantifying the criticality of each path in the potential critical path set on the basis of critical unit information and a path criticality calculation algorithm in the netlist, and obtaining a critical path sequence under process awareness. According to the method, critical paths in circuits influenced by process deviations can be effectively sorted, providing valuable reference for circuit optimization.
NANJING MODERN MULTIMODAL TRANSPORTATION LABORATORY (China)
Inventor
Liu, Songyu
Liu, Yizhao
Deng, Yongfeng
Li, Mengyao
Sun, Jiawei
Zhang, Dingwen
Guo, Zhaoyuan
Abstract
The present invention relates to a method for reinforcing a frozen soil foundation by rotary drilling-prefabricated membrane bag lightweight soil piles, comprising: employing a rotary drilling rig to drill holes; using drilling debris, a curing agent, and a bubble group as raw materials to prepare lightweight soil; and at a construction site, prefabricating piles by using molds and a membrane bag to reinforce a frozen soil foundation. The mixing ratio of the lightweight soil according to the parts by weight of the raw materials is: 10-100 parts of a curing agent, 80-100 parts of excavated soil, 2-45 parts of a bubble group, and 20-400 parts of water. According to the present invention, on-site ex-situ prefabrication of lightweight soil piles avoids thawing of frozen soil layers caused by heat of hydration from in-situ pile formation, and also avoids grout leaking and oozing out caused by in-situ mixing and grouting, such that the construction quality is good, and the efficiency is high; the heat conductivity coefficient of the lightweight soil is small, so that the thawing of the frozen soil layers around the piles can be slowed down when the ground temperature rises, thereby effectively improving the stability and freeze-thaw resistance of the frozen soil foundation; the self-weight of the lightweight soil piles is small, improving in disguise the ability of the foundation to bear the overlying load; and the reuse of the drilling debris saves the raw materials and processing costs, reduces construction costs, simplifies the process, and is of great significance for green, low-carbon, and sustainable development.
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