Abstract

An amplitude-phase integrated regulation and control circuit based on a resistance attenuation network, relating to the technical field of regulation and control circuits. The amplitude-phase integrated regulation and control circuit based on a resistance attenuation network comprises a phase regulation and control network and a symmetrical resistance attenuation network, wherein the phase regulation and control network comprises a phase regulation and control switch transistor (M0) and a phase regulation and control capacitor (C0), the phase regulation and control switch transistor (M0) has a control end connected to a control signal (V0) and two other connection ends respectively grounded and connected to a first end of the phase regulation and control capacitor (C0), and a second end of the phase regulation and control capacitor (C0) is connected to a symmetrical position connection end of the resistance attenuation network. Compared with existing cascaded amplitude-phase control systems, the amplitude-phase integrated regulation and control circuit based on a resistance attenuation network has added thereto only the phase regulation and control switch transistor (M0) and a capacitor element, and additionally achieves a phase regulation and control function while keeping the size of an attenuation unit unchanged; in addition, due to the integrated arrangement of the circuit, circuit insertion loss is avoided and circuit efficiency is improved.

IPC Classes  ?

• H03H 11/24 - Frequency-independent attenuators
• H03H 11/16 - Networks for phase shifting

Abstract

A high-and-low-pass network circuit capable of realizing integrated regulation of an amplitude and a phase, and a control method. The circuit comprises a high-and-low-pass network phase shift unit circuit and amplitude modulation unit sub-circuits, wherein the high-and-low-pass network phase shift unit circuit comprises a high-pass network sub-circuit and a low-pass network sub-circuit, one end of the high-pass network sub-circuit being connected to one end of the low-pass network sub-circuit by means of phase regulation switch transistors M1, M3, and the other end of the high-pass network sub-circuit being connected to the other end of the low-pass network sub-circuit by means of phase regulation switch transistors M2, M4; a body end of M1 and a body end of M2 are respectively connected via amplitude modulation unit sub-circuits, and a body end of M3 and a body end of M4 are respectively connected via amplitude modulation unit sub-circuits; and each amplitude modulation unit sub-circuit comprises an amplitude regulation switch transistor and a resistor which are connected in parallel. Thus, an amplitude and a phase are highly precisely regulated at the same time in the same unit structure.

IPC Classes  ?

• H03H 11/16 - Networks for phase shifting
• H01P 1/18 - Phase-shifters

Abstract

Provided in the present invention are a method and apparatus for analysing residual stresses after assembly, a storage medium and an electronic device, relating to the technical field of stress analysis. For assembly technology that generates large residual stresses during assembly processes and requires overall thermal treatment, the technical solution of the present invention comprises performing finite element modeling on a heat transfer process of the technology, further performing testing and calibration on key thermal parameters to obtain a temperature distribution of a microwave component after each assembly process step, so as to obtain a residual stress distribution of the microwave component after each assembly process step, and finally obtaining a residual stress distribution of the microwave component after assembly. Therefore, the present invention solves the technical issue of analyzing residual stresses after assembly.

IPC Classes  ?

• G06F 30/23 - Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
• G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
• G06F 119/14 - Force analysis or force optimisation, e.g. static or dynamic forces

Abstract

The present invention relates to the field of computer numerical control machine tools. Provided are a universal motion simulation method and universal collision detection method for five-axis computer numerical control machine tools. In the present invention, five-axis machine tools of any structure can be processed by using the same numerical control program processing method, thus avoiding the use of different numerical control program processing methods in respect of five-axis machine tools of different structures and the development of simulation software which can only be used for five-axis machine tools of a certain model, and effectively improving the universality and efficiency of motion simulation and collision detection for five-axis computer numerical control machine tools.

IPC Classes  ?

• G05B 19/401 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes

Abstract

The present invention relates to the technical field of augmented reality, and provides a cross-terminal device data communication system based on an augmented reality device. An augmented reality device collects data such as an audio/video, a picture, and text; a cross-terminal device data communication system transmits the data such as an audio/video, a picture, and text to a data center for parsing and storage, and transmits the data to a smart device terminal such as a PC/tablet/mobile phone, to complete communication and information interaction with a remote expert. Interconnection and intercommunication between the augmented reality device and the smart device terminal are achieved; marking and guidance can be performed in such a manner as an audio/video, a picture, and text, so that operation and maintenance operations are completed more visually, accurately and efficiently; the visualization degree is high, and the interactivity is good.

IPC Classes  ?

• H04L 65/70 - Media network packetisation

Abstract

A surface defect detection method for a primary cable of an aerostat based on few-shot learning includes the following steps. A hardware and software system environment is set. A surface image of the primary cable is acquired and processed to obtain augmented surface image data, which is labeled to construct a surface defect sample library. A defect detection network model is designed and constructed, and then is trained based on the surface defect sample library. A query set in the surface defect sample library is processed with the trained defect detection network model to obtain shallow texture features and high-level semantic features. The shallow texture features are transferred to the high-level semantic features through skip connection. The surface defect detection data under different detection operation modes are obtained at a terminal. This application also provides a surface defect detection system.

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06V 10/54 - Extraction of image or video features relating to texture
• G06V 10/774 - Generating sets of training patternsBootstrap methods, e.g. bagging or boosting
• G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks

Abstract

The present invention provides an integrated multi-AGV path planning and multi-line device layout method and system. The method comprises: establishing a multi-line device layout multi-objective optimization model; solving a total processing time in the iteration: given a layout condition, solving a shortest time required by a workshop to complete an order by using a multi-AGV path planning method on the basis of a time window A* algorithm by combining information of a process route and a processing time of a product; solving a model by using an ant colony algorithm by combining a genetic algorithm; and verifying an accuracy of a solving scheme on the basis of dynamic simulation of a discrete event. The present invention solves the technical problem of device layout in a workshop, especially device layout reconstruction of the hybrid-flow processing production line, and poor production evaluation effect.

IPC Classes  ?

• 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
• G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
• G06Q 10/04 - Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
• G06Q 10/047 - Optimisation of routes or paths, e.g. travelling salesman problem
• G06Q 50/04 - Manufacturing
• G06N 3/006 - Artificial life, i.e. computing arrangements simulating life based on simulated virtual individual or collective life forms, e.g. social simulations or particle swarm optimisation [PSO]
• G06N 3/126 - Evolutionary algorithms, e.g. genetic algorithms or genetic programming
• G06F 111/06 - Multi-objective optimisation, e.g. Pareto optimisation using simulated annealing [SA], ant colony algorithms or genetic algorithms [GA]
• G06F 111/04 - Constraint-based CAD

Abstract

An intelligent scheduling method for welding assembly, the method comprising: implementing a preset nesting process code, so as to determine machining device information and a cache region capacity, which are required for welding; collecting historical production data, extracting production data and interference data during welding, and fitting data features, so as to determine a data distribution function; establishing a dynamic mathematical description model for the welding process; using preset algorithms and the nesting process code to construct a model solving algorithm system and implement same, wherein the preset algorithms comprise an improved genetic algorithm, a construction heuristic algorithm and a lower-bound estimation method of a problem model theory; using the model solving algorithm system to perform solving, constructing a mathematical problem model, and generating a random case; comparing the model solving algorithm system with a bottleneck lower-bound, and correcting an applicable input parameter of the model solving algorithm system according to a preset production scheduling indicator, so as to obtain an applicable parameter system; and inputting verification production data to the applicable parameter system to perform solving, so as to obtain a scheduling scheme applicable to intelligent scheduling for welding assembly.

IPC Classes  ?

• G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
• G06N 3/126 - Evolutionary algorithms, e.g. genetic algorithms or genetic programming
• G06N 5/01 - Dynamic search techniquesHeuristicsDynamic treesBranch-and-bound

Abstract

A multiplayer collaborative task assurance method is provided. Parameter information of a virtual device is acquired as a first parameter information, and input into a pre-trained target model to obtain model results. A model result with a highest priority is acquired as a first model result and is sent to the collaborative client. The collaborative client updates a local model to obtain an updated result. Feedback information is sent to the server based on the updated result. Whether a proportion of the approved opinion in the feedback information exceeds a preset value is determined; if yes, the parameter information in the virtual device is updated. Whether the first model result is correct is determined; if yes, a confirmation message is sent to the collaborative client to continue the multiplayer collaborative task.

IPC Classes  ?

• G06Q 10/101 - Collaborative creation, e.g. joint development of products or services
• H04L 9/40 - Network security protocols

Abstract

A method for designing and verifying system engineering based on fishbone model is provided. System-level static information, system-task-level static information, and system-task-level dynamic data flow are acquired. Based on fishbone diagram, the system-level static information is represented as a system static composite structure diagram, and the system-task-level static information is represented as a system task composite structure diagram. Based on the fishbone diagram, the system-task-level dynamic data flow is represented as a system function point dynamic data flow diagram. Based on the system task composite structure diagram and the system function point dynamic data flow diagram, a static set and a dynamic set of software function modules of the system are established, and consistency adjustment is performed between the software function modules in the static set and the dynamic set. A designing and verifying system is further provided.

IPC Classes  ?

• G06F 9/50 - Allocation of resources, e.g. of the central processing unit [CPU]
• G06F 30/20 - Design optimisation, verification or simulation

Abstract

The present invention relates to the technical field of antenna array deicing, and provides an antenna array deicing device and a use method therefor. The deicing device comprises: an air guide plate, a radar device case, and fans capable of rotating in normal and reverse directions; the air guide plate can be freely opened and closed. The use method for the deicing device comprises the following steps: opening the air guide plate, such that the fans blow air in a normal direction, and hot air generated by the working of the radar device case passes through the air guide plate to flow to the antenna array, thereby achieving an antenna array deicing function. The deicing device guides heat generated by the working of the radar device case to the antenna array to achieve the deicing function; compared with providing a heating device on the antenna array, a large amount of device costs and power consumption costs are saved; moreover, in the hot weather and rainy weather, the air guide plate is closed, such that the fans blow air in a reverse direction, thereby ensuring heat dissipation of the radar device case, preventing overheating of the antenna array, and preventing rainwater from entering the radar device case.

IPC Classes  ?

• F25D 21/00 - DefrostingPreventing frostingRemoving condensed or defrost water
• H01Q 1/00 - Details of, or arrangements associated with, antennas

Abstract

The present invention provides an AR-based cable connection assembly quality analysis system, and relates to the technical field of cable connection assembly quality analysis. The system provided by the present invention is based on a C/S architecture, and integrates the advantage of an intuitive display effect of an AR client and a high computing power of a deep learning server, wherein the deep learning server adopts a two-stage detection algorithm: positioning a spatial position of a connector in a current scenario according to a received cable connection picture; and positioning a cable connection point area according to the cable connection picture marked with the spatial position of the connector; and extracting the color and number characteristics of the cable connection point area, and identifying type information of the connected cable; and comparing the cable connection point area and the type information with a cable connection standard assembly template to acquire a cable connection assembly quality analysis result. The present invention achieves visual automatic identification of cable connection points and cable types, and can automatically record in the assembly quality analysis process, which is beneficial to the later problem backtracking.

IPC Classes  ?

• G06V 20/60 - Type of objects
• G06V 10/22 - Image preprocessing by selection of a specific region containing or referencing a patternLocating or processing of specific regions to guide the detection or recognition
• G06V 10/56 - Extraction of image or video features relating to colour
• G06V 10/75 - Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video featuresCoarse-fine approaches, e.g. multi-scale approachesImage or video pattern matchingProximity measures in feature spaces using context analysisSelection of dictionaries
• G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks

Abstract

The present invention relates to the technical field of prediction of electronic equipment spare parts, and provides a CNN-GA-BP combined model-based spare part demand prediction method and system, a storage medium, and an electronic device. The present invention provides a combination prediction model combining a CNN and a back propagation (BP) neural network, wherein the BP neural network is optimized by using a GA algorithm, and a regression model for predicting future spare part demands by utilizing historical demand data for equipment spare parts is established. The method comprises: first, predicting three types of individual direct prediction models; second, performing convolution on the direct prediction result by using the CNN; then optimizing the BP neural network on the basis of the GA algorithm, so as to form a three-layer combination prediction model, wherein the model is superior to an individual combined model and the individual direct prediction models; and finally evaluating the prediction performance by utilizing the historical demand data for the electronic equipment spare parts. The prediction result proves the superiority of a combination prediction method; according to the method, a novel way can be effectively provided for prediction of medium-and-long-term spare part demands, thereby optimizing enterprise internal inventory management.

IPC Classes  ?

• G06Q 10/04 - Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"

Abstract

The present invention relates to the technical field of software, and provides a multi-user collaborative task guaranteeing method based on proxy and backup technology. After a target client is disconnected from a server, a pre-trained target model in the server is used for simulating an operation of a user of the target client, so as to update parameter information of a virtual device, thereby guaranteeing the smooth and efficient implementation of a multi-user collaborative task. In addition, on the basis of feedback information of a collaborative client and a confirmation operation of the server, a determination as to whether a model result output by the selected pre-trained target model is correct is made, and the feasibility of the updated parameter information of the virtual device is verified, thereby avoiding the deviation in the multi-user collaborative task implementation process.

IPC Classes  ?

• G06Q 10/20 - Administration of product repair or maintenance

Abstract

The present invention relates to the technical field of microwave antenna engineering design of radar and communication systems. Disclosed are a transmission wave-absorbing structure and an antenna in-band characteristic test system. In the transmission wave-absorbing structure provided in the present invention, equivalent electric walls are used in combination with equivalent magnetic walls, such that electric walls and magnetic walls for the placement of four objects of the equivalent electric walls and the equivalent magnetic walls form a standard TEM waveguide, and the irradiation of plane waves to an antenna under test can be simulated in a closed environment. Moreover, the test system provided in the present invention is constructed on the basis of a closed induction field area, such that, compared with a traditional near-field method or far-field method, the present invention has the advantages of low electromagnetic leakage, not requiring wave-absorbing materials in a test environment, and not requiring tests in a microwave near-field or far-field anechoic chamber.

IPC Classes  ?

• H01P 3/12 - Hollow waveguides

Abstract

This application provides a transmission absorbing structure and an antenna in-band characteristics test system, relating to design of microwave antennas for radar and communication systems. The transmission absorbing structure includes a coupling feed structure provided with coupling slots for energy coupling with a to-be-tested antenna, two equivalent electric wall structures parallel to each other, and two equivalent magnetic wall structures parallel to each other. The two equivalent electric wall structures and the two equivalent magnetic wall structures together enclose the coupling feed structure, and form a transverse electromagnetic mode (TEM) waveguide. The system includes a vector network analyzer, a to-be-tested antenna electrically connected to the vector network analyzer, and a transmission absorbing structure.

IPC Classes  ?

• G01R 29/08 - Measuring electromagnetic field characteristics
• G01R 29/10 - Radiation diagrams of antennas

Abstract

Disclosed in the present invention are a fishbone-model-based systems engineering design and verification method and system. The method comprises system-level static information, system-task-level static information and a system-task-level dynamic data stream. The method comprises: on the basis of a fishbone diagram, representing system-level static information and system-task-level static information as a system static composition structure diagram and a system task composition structure diagram corresponding to each system task in the system static composition structure diagram; on the basis of the fishbone diagram, representing a system-task-level dynamic data stream as a system function point dynamic data flow diagram; on the basis of the system task composition structure diagram and the system function point dynamic data flow diagram, establishing a static set and a dynamic set of software function modules of a system; and performing consistency adjustments on the software function modules in the static set and the software function modules in the dynamic set. The present invention is easier to operate, understand and use, and the integrity and consistency between system functions and each piece of software for implementing system tasks are guaranteed, thereby effectively improving the reliability of a system.

IPC Classes  ?

• G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads

Abstract

Provided in the present invention are a method and system for detecting a defect on the surface of a main cable of an aerostat on the basis of few-shot learning. The method comprises: setting system software and hardware environments; collecting an image of the surface of a main cable of an aerostat and performing expansion processing on the image by means of a preset adversarial network, so as to obtain enhanced image data of the surface of the cable and performing labeling, and constructing a defect sample library on this basis; designing a network model by utilizing a DenseNet network and defect characteristics of the main cable, constructing the network model by utilizing few-shot learning, and training the network model according to the defect sample library; processing a query set in the defect sample library by utilizing the trained network model and a yolov4 single-stage detection algorithm, so as to obtain a shallow texture feature and a high-level semantic feature on this basis; transferring the shallow texture feature to the high-level semantic feature by means of skip connection and by utilizing the structure of the DenseNet network of the network model, and performing processing by means of measurement logic; and making a choice at a terminal to acquire defect detection data of the surface of the main cable of the aerostat in different modes. The technical problems of a high rate of missed detection, a high rate of false detection and a low detection efficiency for a defect are solved.

IPC Classes  ?

• G06T 7/00 - Image analysis

Abstract

A method and a system for measuring large-scale radar antenna array surface precision, relating to the technical field of antenna array surface precision measurement, and comprising steps including scenario construction, task planning, measurement implementation, quality evaluation, and processing display. The present method uses an unmanned aerial vehicle-mounted photographic measurement system to carry out automatic measurement of large-scale radar antenna array surface precision, and a resulting three-dimensional model result can be displayed. Thus, staff of a radar assembly site can more intuitively and efficiently measure assembly precision of a large-scale radar antenna array surface, thereby solving the technical problems in the prior art of low efficiency in measurement of radar antenna array surface precision, and poor display effects in visualization of a result, and further achieving the technical effects of reducing on-site measurement workload and improving measurement efficiency.

IPC Classes  ?

• G01S 7/40 - Means for monitoring or calibrating
• G01B 11/30 - Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces

Abstract

Disclosed are a digital plugboard (7) universal automatic testing system and method based on image processing, belonging to the technical field of digital plugboard (7) testing. The digital plugboard (7) universal automatic testing system comprises a digital plugboard test bench, an image acquisition and processing module, a testing instrument module and a control processing module. The digital plugboard (7) universal automatic testing system and method can identify a model of a digital plugboard (7) and a node to be tested on the basis of image processing of the digital plugboard (7), call a corresponding automatic test program, and complete an index test of each node. Not only can a type of an input and output signal be tested, but also any welding spot or test point of the digital plugboard (7) can be tested by means of moving a detection probe (6), and a possible fault location of the digital plugboard (7) is given according to a test result, so as to assist a user to perform fault maintenance.

IPC Classes  ?

• G01R 31/00 - Arrangements for testing electric propertiesArrangements for locating electric faultsArrangements for electrical testing characterised by what is being tested not provided for elsewhere

Abstract

A universal automatic test system for a digital plugboard based on imagine processing, includes a digital plugboard test platform, an image acquisition and processing module, a test instrument module and a control and processing module. The universal automatic test system can determine a type of the digital plugboard and a point to be test based on the image of the digital plugboard, and call a corresponding automatic test program to complete the test of each point. A type of the output signal can be obtained through the universal automatic test system. By moving the detection probe, the any position of the digital plugboard can be test, and a fault portion of the digital plugboard can be obtained according to the test result.

IPC Classes  ?

• G01R 31/34 - Testing dynamo-electric machines
• G05B 23/02 - Electric testing or monitoring

Abstract

The present invention relates to the technical field of silicon-based optoelectronic devices, and provides an all-silicon-doped multi-junction electric field enhanced germanium optical waveguide detector. In the present invention, a metal electrode, a silicon oxide upper cladding layer, a waveguide layer, and a silicon oxide lower cladding layer are sequentially stacked in a first direction. The waveguide layer comprises a germanium absorption layer and a thin silicon layer. The germanium absorption layer is located between the thin silicon layer and the silicon oxide upper cladding layer. The thin silicon layer below the germanium absorption layer is provided with a multi-junction doped region structure. The silicon oxide upper cladding layer comprises a through hole structure. The through hole structure is connected to the metal electrode and the thin silicon layer. Dark current is suppressed, the response speed of the detector is improved, and the bandwidth of the detector is improved in a large range without increasing the process difficulty, that is, the comprehensive performance of the detector is greatly improved.

IPC Classes  ?

• H01L 31/0352 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
• H01L 31/0232 - Optical elements or arrangements associated with the device
• H01L 31/105 - Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier or surface barrier the potential barrier being of the PIN type

Abstract

Provided is a millimeter-wave radar package module, which relates to antenna packaging. The millimeter wave radar package module includes a package and a plurality of antenna units packaged therein. The package includes a chip, and the chip includes a transmitter and a receiver. The antenna units are respectively connected to an output pin of the receiver and an output pin of the transmitter through a transmission line.

IPC Classes  ?

• H01Q 1/22 - SupportsMounting means by structural association with other equipment or articles
• G01S 7/03 - Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
• H01Q 21/00 - Antenna arrays or systems
• G01S 7/02 - Details of systems according to groups , , of systems according to group

Abstract

A chip-package-antenna integrated structure based on an SIW multi-feed network. A plurality of output terminals of the chip are connected to the SIW multi-feed network through the impedance matching network, to achieve the impedance matching between the chip and the SIW multi-feed network. The output terminal of the SIW multi-feed network is directly connected to the antenna terminals, and two or more input signals experience power combining in the substrate integrated waveguide are combined for power combining. Then the combined millimeter-wave signal is radiated by the antenna, finally realizing the power combining in the chip-package-antenna integrated structure. At the same time, the SIW multi-feed network is composed of a SIW structure, in which a plurality of via holes are arranged spaced apart to form a cavity structure.

IPC Classes  ?

• H01Q 1/22 - SupportsMounting means by structural association with other equipment or articles
• H01L 23/66 - High-frequency adaptations
• H01L 23/00 - Details of semiconductor or other solid state devices

Abstract

A multi-feed packaged antenna based on fan-out package, which relates to packaged antennas. A first passivation layer is arranged under a packaging layer, and first and second redistribution layers are arranged on the first passivation layer to build the multi-feed packaged antenna. Connecting ends of multiple channels of a chip are connected to a feed structure of a packaged antenna. A metal layer of the feed structure is achieved by the first redistribution layer, and the second redistribution layer is mainly configured to package an antenna. The coaxial feed is adopted herein, in which two redistribution layers are provided, by which a multi-port power combining can be achieved on the antenna, providing a wide-beam performance.

IPC Classes  ?

• H01L 23/00 - Details of semiconductor or other solid state devices
• H01L 23/66 - High-frequency adaptations
• H01Q 1/22 - SupportsMounting means by structural association with other equipment or articles

Abstract

Disclosed is a digital twin tethered balloon system; key running state data of a tethered balloon is collected through an Internet of Things of a tethered balloon system; the key running state data of the tethered balloon is transmitted to a twin data service center; the twin data service center receives, analyzes and stores the data and forwards the data to a tethered balloon digital twin system; the tethered balloon digital twin system simulates a pose of a tethered balloon body and the movement of a ground tethering facility; and the tethered balloon monitoring service provides running state monitoring, quality problem tracking, fault prediction and early warning, automatic control and other services.

IPC Classes  ?

• B64B 1/50 - Captive balloons
• G06F 30/20 - Design optimisation, verification or simulation
• B64B 1/62 - Controlling gas pressure, heating, cooling, or discharging gas
• G05B 17/02 - Systems involving the use of models or simulators of said systems electric
• G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors

Abstract

An intelligent instrument and meter verification system, comprising an automatic meter verification system (1), a reference meter group (2), and a communication control interface (3); the automatic meter verification system (1) is connected, by means of the communication control interface (3), to a meter to be verified, the automatic meter verification system (1) is connected to the reference meter group (2) by means of the communication control interface (3), and the reference meter group (2) is connected to said meter by means of the communication control interface (3). Also disclosed is an intelligent instrument and meter verification method. The present invention can perform automatic test, control, and automatic acquisition and analysis directly for the verification of various types of meters, and can achieve intellectualization of the verification process of instruments and meters under the control of a software system, and can also establish a basic database of meter states, achieving continuous tracking and analysis of meter states.

IPC Classes  ?

• G01D 18/00 - Testing or calibrating apparatus or arrangements provided for in groups

Abstract

An evanescent wave coupling mode-based waveguide integrated photoelectric detector, which relates to the technical field of integrated photoelectrons. When operating, a reverse bias voltage is loaded to a cathode (3) and anodes (4), and by means of the structure of a light-absorbing layer (2) arranged in a semi-circle with respect to a ridge of a ridged waveguide (1), the light-absorbing layer (2) can efficiently absorb optical signals transferred by the top part and contact surfaces at two sides of a silicon ridged waveguide (1). Since the light-absorbing layer (2) has the same dimensions, the light absorption efficiency of the light-absorbing layer (2) can reach up to 87.1% (normalized data), and the light absorption efficiency, photo-generated current, and responsivity of the light-absorbing layer (2) can be increased, thereby improving the photoelectric conversion capability. Compared to conventional evanescent wave coupling mode-based waveguide integrated photoelectric detectors, the width and thickness of the waveguide (1) comply with the same process requirements, the width and thickness of the light-absorbing layer (2) are the same, and the requirements for the growth process precision of the light-absorbing layer (2) are not increased by order of magnitude.

IPC Classes  ?

• H01L 31/0232 - Optical elements or arrangements associated with the device
• H01L 31/0352 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
• H01L 31/101 - Devices sensitive to infrared, visible or ultraviolet radiation

Abstract

A digital twin tethered balloon system, relating to the field of digital twin technology. A tethered balloon system Internet of things acquires tethered balloon key operating status data, and transmits the tethered balloon key operating status data to a twin data service center; the twin data service center receives, analyzes, and stores the data, and forwards same to a tethered balloon digital twin system; the tethered balloon digital twin system simulates the pose of the tethered balloon body and the movement of a ground tethering facility; a tethered balloon monitoring service provides a service such as operating status monitoring, quality problem tracking, failure prediction and early warning, and automatic control. Deep integration of a physical space and a digital space of a tethered balloon system is achieved, the tethered balloon system can be monitored, and high visualization degree and a good interaction method are provided, thereby implementing omnidirectional multi-view monitoring of a tethered balloon, major safety issue tracing, and failure diagnosis and early warning, and ensuring operation safety of the tethered balloon system.

IPC Classes  ?

• G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
• G01D 21/02 - Measuring two or more variables by means not covered by a single other subclass
• H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

Disclosed in the present invention are a broadband dual-polarized solar cell antenna and an antenna array. The broadband dual-polarized solar cell antenna comprises an antenna oscillator layer, an isolation layer, a solar cell sheet layer, and an antenna base which are provided in sequence from top to bottom. The antenna oscillator layer is connected to the antenna base and a coaxial radio frequency connector by means of a metal post feed structure; the solar cell sheet layer is provided on the antenna base; the isolation layer is provided between the antenna oscillator layer and the solar cell sheet layer, and the isolation layer is made of a transparent material. The present invention is small in light shielding, high in transparency, and has a broadband dual-polarized large-angle scanning capability; not only the performance of the antenna but also the power generation efficiency of a solar cell are ensured; moreover, the present invention has a high engineering application value.

IPC Classes  ?

• H01Q 1/22 - SupportsMounting means by structural association with other equipment or articles

Abstract

Provided is a method for matching a virtual scene of a remote scene with a real scene for augmented reality and mixed reality. Multiple coordinate systems are established and a position relationship between the multiple coordinate systems is determined. A position of a point cloud scene in the near-side environmental space and the position of the near-side virtual scene are determined in the near-side environmental space through real marks, so as to realize the high-precision matching and positioning for augmented reality and mixed reality. Based on the position of objects marked in the real space, the method realizes adaptive and accurate positioning of the virtual objects in the augmented reality and mixed reality by overcoming spatial barriers. The scene in the virtual space is accurately superimposed into the near-side environmental space.

IPC Classes  ?

• G06T 19/00 - Manipulating 3D models or images for computer graphics
• G06T 7/70 - Determining position or orientation of objects or cameras
• G06K 9/03 - Detection or correction of errors, e.g. by rescanning the pattern
• G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints

Abstract

A remote virtual-real high-precision matching and positioning method oriented to augmented reality and mixed reality, relating to the technical field of mixed reality and augmented reality. Multiple coordinate systems are constructed and the positional relationship between the coordinate systems is determined, and real markers are used for determining positions of a point cloud scene of a remote scene and a near-end virtual scene in a near-end environment space, thereby realizing remote virtual-real high-precision matching and positioning oriented to augmented reality and mixed reality. The position of a virtual object in a mixed and augmented reality environment can be adaptively and accurately positioned on the basis of the position of a marker object in a real space and across a space obstacle, and a scene in a virtual space is accurately superposed into the near-end environment space, thereby facilitating realizing interactive operations under virtual-real comparison, such as remote training demonstration and assisted guidance.

IPC Classes  ?

• G06T 19/00 - Manipulating 3D models or images for computer graphics
• G06T 7/70 - Determining position or orientation of objects or cameras

Abstract

The present disclosure provides a method of regenerating an electron source, the electron source including at least one emission site fixed on a needle tip, and the emission site including a reaction product formed by metal atoms and gas molecules. The method includes regenerating the electron source in situ if an emission capability of the electron source satisfies a regeneration condition.

IPC Classes  ?

• H01J 9/50 - Repairing or regenerating used or defective discharge tubes, lamps or their salvageable components
• H01J 1/304 - Field-emissive cathodes

Abstract

The present disclosure provides an electron source, including one or more tips, wherein at least one of the tips comprises one or more fixed emission sites, wherein at least one of the tips includes one or more fixed emission sites, wherein the emission sites includes a reaction product of metal atoms on a surface of the tip with gas molecules.

IPC Classes  ?

• H01J 37/073 - Electron guns using field emission, photo emission, or secondary emission electron sources
• H01J 3/02 - Electron guns
• H01J 37/065 - Construction of guns or parts thereof
• H01J 37/07 - Eliminating deleterious effects due to thermal effects or electric or magnetic fields

Abstract

The present disclosure provides a method of manufacturing an electron source. The method includes forming one or more fixed emission sites on at least one needle tip, the fixed emission sites including a reaction product formed by metal atoms on a surface of the needle tip and gas molecules.

IPC Classes  ?

• H01J 37/073 - Electron guns using field emission, photo emission, or secondary emission electron sources
• H01J 37/065 - Construction of guns or parts thereof
• H01J 3/02 - Electron guns

Abstract

The present disclosure provides an electron source operating method, the electron source including at least one emission site fixed on a tip, the emission site being a reaction product formed by metal atoms of a surface of the tip and gas molecules under an electric field, and the operating method comprises emitting electrons by controlling operating parameters of the electron source.

IPC Classes  ?

• H01J 1/304 - Field-emissive cathodes
• H01J 3/02 - Electron guns
• H01J 37/073 - Electron guns using field emission, photo emission, or secondary emission electron sources

Abstract

The present invention relates to the technical field of antennas. Disclosed is a wide-angle scanning dual-polarized dipole antenna, comprising a first metal arm, an antenna support column, a second metal arm, and a feed balun. The first metal arm is located on the top of the antenna and is configured to improve the impedance fluctuation of the antenna during scanning at a large angle. The feed balun is located at the bottom of the antenna and is configured to convert an unbalanced feed input by a coaxial wire into a balanced feed. The present invention greatly improves the impedance matching of the antenna during large-angle scanning, and effectively improves the performance of the antenna during wide-angle scanning. In addition, the antenna has a good cross-polarization performance. Finally, the snows and rains can hardly be accumulated on the metal dipole arm and the top metal arms because the cross-sections of both arms are small due to their longitudinal blade-shaped bending structures, so that the influence of snow and rain on the performance and service life of the antenna is greatly reduced, and the antenna can be applied even in severe weather conditions such as heavy rain and heavy snow.

IPC Classes  ?

• H01Q 1/36 - Structural form of radiating elements, e.g. cone, spiral, umbrella

Abstract

Disclosed is a method employing assembly constraints and collision detection to automatically generate a hierarchical exploded view. To reduce the number of attempted explosion operations and improve explosion efficiency, explosion sequencing and layering of parts are determined according to a design result of a three-dimensional assembly process, and grouping of parts to be exploded in each layer is determined according to identical or similar parts and disassembly directions. For each layer of parts, a viable explosion direction is determined according to an assembly constraint and collision detection, an explosion sequence and an explosion direction are determined for the layers of parts, and hierarchical explosion is performed in accordance with a specific distance. After an exploded view containing all parts is completed, balloons and a part list of the parts are generated. The present invention achieves a simple and convenient design, performs layering with respect to an explosion sequence of parts in advance and grouping of parts to be exploded in each layer, and determines an explosion direction to be attempted by means of an assembly constraint, thereby effectively reducing the number of attempted explosion operations, further improving explosion efficiency and an explosion effect, and meeting demands for exploded views during a product operation and maintenance stage for purposes such as product use and training manuals.

IPC Classes  ?

• G06T 17/00 - 3D modelling for computer graphics

Abstract

An operation method for an electron source. The electron source comprises at least one emission point fixed at a tip. The emission point is a reaction product of gas molecules with metal atoms at the surface of the tip, formed under an electric field. The operation method comprises: causing electron emission by means of controlling an operation parameter of the electron source.

IPC Classes  ?

• H01J 37/06 - Electron sourcesElectron guns

Abstract

An electron source (101). The electron source (101) comprises: one or more pins, at least one pin comprising one or more fixed emission points (Ma1), each emission point (Ma1) comprising a reaction product formed by metal atoms and gas molecules on the surface of the pin. Further provided is an electron gun.

IPC Classes  ?

• H01J 37/06 - Electron sourcesElectron guns
• H01J 37/065 - Construction of guns or parts thereof
• H01J 37/07 - Eliminating deleterious effects due to thermal effects or electric or magnetic fields

Abstract

Disclosed is an electron source manufacturing method. The method comprises: forming one or more fixed emission points on at least one needle tip, wherein the emission point comprises a reaction product formed by metal atoms on a surface of the needle tip and gas molecules.

IPC Classes  ?

• H01J 37/02 - Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof Details

Abstract

Disclosed is an electron source regeneration method. The electron source includes at least one emission point fixed on a needle tip, and the emission point includes a reaction product formed by a metal atom and a gas molecule. The regeneration method comprises: regenerating the electron source in situ if the emission capability of the electron source meets regeneration conditions.

IPC Classes  ?

• H01J 37/06 - Electron sourcesElectron guns
• H01J 27/26 - Ion sourcesIon guns using surface ionisation, e.g. field effect ion sources, thermionic ion sources

Abstract

The invention relates to the field of radars, and provides a photonic crystal resonant cavity-based tree-structured beamforming network chip and preparation method therefor. Disclosed is a photonic crystal resonant cavity-based tree-structured beamforming network chip comprising a beamforming network structure layer. The beamforming network structure layer comprises an incoupling grating, first to Nth stages of photonic crystal resonant cavity combinations, first to (N+1)th optical waveguides, and an outcoupling grating which are sequentially connected. The number of branches of each stage of photonic crystal resonant cavity combination is an integral multiple of the number of branches of the previous stage of photonic crystal resonant cavity combination. Two stages of photonic crystal resonant cavity combinations are connected by means of an optical waveguide. The technical problems in the prior art of the need of a large number of photonic crystal resonant cavities and high adjustment difficulties during an adjusting process are solved. The present invention can save a large number of photonic crystal resonant cavities, features low adjustment difficulties, and can be applied to the field of radars.

IPC Classes  ?

• G02B 6/122 - Basic optical elements, e.g. light-guiding paths
• G02B 6/12 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind

Abstract

Provided is a transformable stratospheric airship, comprising: an upper hull (1), a lower hull (2), a folded ballonet (3), and wire arrangement mechanisms (4) arranged on the upper hull and the lower hull, wherein the folded ballonet comprises a closed ballonet (31), guide holes (7) arranged at an outer portion of the closed ballonet, and bracing wire cables (6) passing through the guide holes in a set order; the bracing wire cables are used to maintain the shape of the closed ballonet; the bracing wire cables are connected to the wire arrangement mechanisms to fix the closed ballonet to the upper hull and the lower hull; and the wire arrangement mechanisms control the length of the bracing wire cables so that the folded ballonet can be folded and unfolded in a vertical direction of the airship. In the airship, an integrated closed ballonet is used, and bracing wire cables outside the closed ballonet is controlled by means of wire arrangement mechanisms, thereby realizing the folding and unfolding the closed ballonet.

IPC Classes  ?

• B64B 1/04 - Non-rigid airships the profile being maintained by ties or cords connecting opposite surfaces

Abstract

Provided are an optically controlled adjustable TeraHertz wave attenuator and a use method therefor. The optically controlled adjustable TeraHertz wave attenuator comprises a silicon-based vanadium oxide thin film (1), a laser transmitter (2) and a collimator (3). The silicon-based vanadium oxide thin film (1) is perpendicular to the direction of a TeraHertz wave beam. The laser transmitter (2) is disposed on one side of the silicon-based vanadium oxide thin film (1), and is connected with the collimator (3). The laser emitted from the laser transmitter (2) is transmitted from the collimator (3), and is irradiated on the film surface of the silicon-based vanadium oxide thin film (1), and a laser spot irradiated on the film surface of the silicon-based vanadium oxide thin film (1) fully covers a transmitted TeraHertz wave spot.

IPC Classes  ?

• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour

Abstract

The present disclosure provides a method for manufacturing a particle source comprising: placing a metal wire in vacuum, introducing active gas, adjusting a temperature of the metal wire and applying a positive high voltage V to the metal wire to generate at a side of the head of the metal wire an etching zone in which field induced chemical etching (FICE) is performed; increasing by the FICE a surface electric field at the top of the metal wire head to be greater than a field evaporation electric field of material for the metal wire, so that metal atoms at the top of the metal wire are evaporated off; after the field evaporation is activated by the FICE, causing mutual adjustment between the FICE and the field evaporation, until the head of the metal wire has a shape of combination of a base and a tip on the base; and stopping the FICE and the field evaporation when the head of the metal wire takes a predetermine shape.

IPC Classes  ?

• C25F 3/00 - Electrolytic etching or polishing
• C03C 15/00 - Surface treatment of glass, not in the form of fibres or filaments, by etching
• H01J 37/04 - Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement, ion-optical arrangement
• H01L 21/311 - Etching the insulating layers
• H01J 37/073 - Electron guns using field emission, photo emission, or secondary emission electron sources
• H01J 27/26 - Ion sourcesIon guns using surface ionisation, e.g. field effect ion sources, thermionic ion sources
• H01J 9/02 - Manufacture of electrodes or electrode systems
• H01J 37/08 - Ion sourcesIon guns
• B82Y 40/00 - Manufacture or treatment of nanostructures

Abstract

The present disclosure provides a method for manufacturing a particle source, comprising: placing a metal wire in vacuum, introducing active gas and catalyst gas, adjusting a temperature of the metal wire, and applying a positive high voltage V to the metal wire to dissociate the active gas at the surface of the metal wire, in order to generate at a peripheral surface of the head of the metal wire an etching zone in which field induced chemical etching (FICE) is performed; increasing by the FICE a surface electric field at the top of the metal wire head to be greater than the to evaporation field of the material for the metal wire, so that metal atoms at the wire apex are evaporated off; after the field evaporation is activated by the FICE, causing mutual adjustment between the FICE and the field evaporation, until the head of the metal wire has a shape of combination of a base and a tip on the base; and stopping the FICE and the field evaporation when the head of the metal wire takes a predetermine shape.

IPC Classes  ?

• C25F 3/00 - Electrolytic etching or polishing
• C03C 15/00 - Surface treatment of glass, not in the form of fibres or filaments, by etching
• C23F 4/02 - Processes for removing metallic material from surfaces, not provided for in group or by evaporation
• H01J 1/00 - Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
• H01J 1/304 - Field-emissive cathodes
• H01J 9/02 - Manufacture of electrodes or electrode systems
• H01J 37/04 - Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement, ion-optical arrangement
• H01J 37/06 - Electron sourcesElectron guns
• H01J 37/08 - Ion sourcesIon guns
• B82Y 99/00 - Subject matter not provided for in other groups of this subclass
• H01J 27/26 - Ion sourcesIon guns using surface ionisation, e.g. field effect ion sources, thermionic ion sources
• H01J 37/073 - Electron guns using field emission, photo emission, or secondary emission electron sources

Abstract

A method for manufacturing a particle source (100), including: placing a metal wire into a vacuum environment and injecting active gas and catalytic gas therein, adjusting the temperature of the metal wire and applying a positive high voltage V on the metal wire, dissociating the active gas on the surface of the metal wire, producing an etching band on the side of the head of the metal wire, and then field etching taking place within the etching band; the field etching strengthening the surface electric field of the top end of the head of the metal wire, until it surpasses the field evaporation electric field of the material of the metal wire, and making the metal atoms here evaporate; after the field etching triggers field evaporation, the two mechanisms mutually adjust until the shape of the head of the metal wire becomes composed of a pedestal (120) and a needle tip (110) on the pedestal (120), wherein the field etching takes place on the side, forming the pedestal (120), and field evaporation takes place at the top end, forming the needle tip (110); and, when a metal wire head having a specific shape is acquired, stopping field etching and field evaporation.

IPC Classes  ?

• H01J 37/04 - Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement, ion-optical arrangement

Abstract

A method for manufacturing a particle source(100) is provided, which comprises the following steps: placing a metal wire in a vacuum environment and introducing active gas; adjusting the temperature of the metal wire; applying a positive high-voltage V to the metal wire; an etching strip is formed on the side face of top of the metal wire, and a field etching is generated in the etching strip; a surface electric field of the top end of the metal wire is strengthened by the field etching, the metal atom is evaporated out until the surface electric field of the top end of the metal wire is stronger than the field evaporating electric field of the metal wire; after the field evaporating is induced by the field etching, the two means are adjusted with each other until the top of the metal wire is in the shape of a base(120) and a tip(110) on the base(120), the field etching is generated on the side face to form the base(120), the top of the metal wire is reduced from the side face and the top face respectively by the field etching and the field evaporating to form the tip(110) of the particle source(100); the field etching and the field evaporating are terminated when the top of the metal wire with the predetermined shape is achieved.

IPC Classes  ?

• H01J 37/04 - Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement, ion-optical arrangement

Abstract

A particle source(100) is provided, which comprises a base(120) with a planar top, and a tip(110) formed on the top of the base(120) in the shape of a micro projection.

IPC Classes  ?

• H01J 37/04 - Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement, ion-optical arrangement