Abstract

The present invention relates to the field of industrial automation. Provided is a synchronization optimization method for EtherCAT master and slave stations. The method comprises: recording the time at which a master station sends a data frame and the time at which the master station receives the data frame, and recording the time at which a reference slave station receives the data frame; calculating a transmission delay between the master station and the reference slave station; using exponential moving average to acquire a compensated transmission delay between the master station and the reference slave station; calculating the time for a data frame to return to a parent port of each non-reference slave station after leaving the parent port of the non-reference slave station; calculating the transmission delay, clock offset and clock drift of each non-reference slave station; using a double exponential smoothing algorithm to compensate for the clock drift, and subtracting the compensated clock drift from the clock offset to obtain a new clock offset; and writing the new clock offset into the slave station for compensation, so as to complete synchronization optimization. Thus, the clock drift of each slave station is reduced, and a master station can more rapidly compensate for the clock drift of each slave station.

IPC Classes  ?

• H04J 3/06 - Synchronising arrangements

Abstract

This application relates to a method and a device for fitting a spectrum in an off-axis integrated cavity disturbed by radio frequency noise. The method includes: setting a single mode output light field of a laser; obtaining a maximum cutoff frequency and a power spectral density of radio frequency white noise generated by a radio frequency noise source, and converting a disturbance of the radio frequency white noise in electricity to a phase disturbance of the light field to obtain a converted power spectral density; determining a laser power spectrum according to the set light field, and the maximum cutoff frequency and the converted power spectral density of the radio frequency white noise; obtaining a length and a cavity mirror reflectivity of an off-axis integrated cavity system, and an initial light intensity and a real-time light intensity when the off-axis integrated cavity system runs; and constructing a forward fitting model.

IPC Classes  ?

• G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
• G01N 21/39 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
• G01R 29/26 - Measuring noise figureMeasuring signal-to-noise ratio

Abstract

Provided is a method for measuring a DAC nonlinearity error based on a pseudo-random sequence. The method includes: numbering pseudo-random number values in a pseudo-random sequence to generate a serial number sequence; arranging the pseudo-random number values in the serial number sequence in a descending or ascending order to determine an order random array; sending the pseudo-random number values, as DAC code values, in the order random array to the DAC sequentially; determining a first differential voltage array and a second differential voltage array according to a voltage corresponding to the DAC code values and the DAC code values; and determining a nonlinearity error measurement result of the DAC according to a differential nonlinearity error test result of the DAC and an integral nonlinearity error test result of the DAC determined by the first differential voltage array and the second differential voltage array.

IPC Classes  ?

• H03M 1/06 - Continuously compensating for, or preventing, undesired influence of physical parameters

Abstract

The present application discloses a self-calibration elevator door lock contact making device, which comprises a stationary base plate, a movable base plate, contacts, adjusting components and a controller, wherein the stationary base plate and the movable base plate are oppositely arranged and are respectively provided with contacts, and the two contacts can move relatively laterally or longitudinally through the adjusting components respectively; and the controller is electrically connected with two groups of adjusting components and provided with a contact detection loop capable of monitoring the contact state of the two contacts. The automatic real-time monitoring and automatic calibration of the door lock can be realized, and the door lock can be locked smoothly when the landing door and the car door are closed, thereby reducing the delay caused by inaccurate door operation and the cost of manual maintenance and adjustment, and improving the safety and reliability of the elevator.

IPC Classes  ?

• B66B 13/22 - Operation of door or gate contacts

Abstract

The present application discloses a steel belt guide wheel assembly comprising guide wheels and bearings, wherein the guide wheels are made of nylon, the left and right ends of the wheel surface are respectively provided with a left annular convex wall and a right annular convex wall; a belt groove is formed between the left annular convex wall and the right annular convex wall, the bearings are coaxially installed in a wheel body channel of the guide wheel, and the guide wheels can be detachably connected in pairs by a connecting mechanism or glued together by glue; the assembly has good wear resistance, low noise, light weight and high strength, which prolongs the service life, reduces the manufacturing cost and maintenance cost, helps to reduce the load of elevator system, reduces the load of driving parts, improves the riding comfort of passengers, and can be freely combined as required.

IPC Classes  ?

• B66B 15/02 - Rope or cable carriers

Abstract

A treatment method for enhancing coercive force of neodymium iron boron magnet includes the following steps: subjecting the neodymium iron boron magnet to electrochemical deposition in a diffusion water-based solution to obtain a neodymium iron boron magnet containing a heavy rare earth; and subjecting the neodymium iron boron magnet containing the heavy rare earth to heat treatment to complete enhancement of the coercive force of the neodymium iron boron magnet. The raw material used in the present invention is cheap heavy rare earth compounds which increases the selection of diffusion sources and lowers costs. Metal alloy particles are mainly obtained in a nanoscale size and can effectively enter crystal grains, and low-melting-point metal alloy components can enhance a demagnetizing coupling effect between main phase grains. According to the present invention, the coercive force of the magnet is increased by nearly 30%, and residual magnetism is almost not changed.

IPC Classes  ?

• H01F 41/02 - 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
• H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B

Abstract

Groups of primers and probes for identifying eight kinds of animal-derived milk and milk products based on a double-tube duplex PCR and an application thereof are provided, which belongs to the technical field of milk product detection. The group of primers and probes of the present disclosure includes an internal reference forward primer and an internal reference reverse primer, a horse-derived forward primer and a horse-derived reverse primer, a donkey-derived forward primer and a donkey-derived reverse primer, a universal forward primer and a universal reverse primer, an internal reference probe, a buffalo-specific probe, a goat-specific probe, a sheep-specific probe, a horse-specific probe, a camel-specific probe, a yak-specific probe, a donkey-specific probe, and a cow-specific probe.

IPC Classes  ?

• C12Q 1/6876 - Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes

Abstract

A club-shaped liquid pump includes a motor, an inlet end cover and an outlet end cover. Both the inlet end cover and the outlet end cover are connected to the motor, a bracket is connected to a side of the motor near the outlet end cover, the bracket is arranged with an inlet hole to suck liquid into a stator. The bracket is fixedly arranged with a pump cover plate through the stator, the pump cover plate defines an outputting channel, the pump cover plate is connected to a rotor through an eccentric connection shaft, the rotor is connected to a motor shaft. The rotor is connected to the bracket via a pushing mechanism and at least two support mechanisms and rotates eccentrically along the inside of the stator, and at least one continuously-varying compression chamber is formed between the rotor and the stator.

IPC Classes  ?

• F04C 15/06 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
• F04C 15/00 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups
• F16M 13/02 - Other supports for positioning apparatus or articlesMeans for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle

Abstract

A synchronization optimization method for EtherCAT master slaves is provided. By capturing a time when a master sends a data frame, a time when receives, and a time when a reference slave receives the data frame, a transmission delay is calculated. A compensated transmission delay is obtained. A time taken for a data frame to leave a parent port and return to the same parent port, a transmission delay, a clock offset, and a clock drift are calculated. The clock drift is compensated. A new clock offset is obtained by subtracting the compensated clock drift from the clock offset and written into the non-reference slave for compensation to complete a synchronization optimization. The present application reduces the clock drift and enables the master to compensate for the clock drift of each slave more rapidly.

IPC Classes  ?

• G06F 13/20 - Handling requests for interconnection or transfer for access to input/output bus

Abstract

Disclosed is a method for measuring time-of-flight of an ultrasound echo signal, and relate to the field of measurement technology. The method comprising: capturing an echo signal; obtaining a reconstructed echo signal by performing denoising and reconstruction on the echo signal using an empirical wavelet transform; obtaining a preset reference echo peak value and a reconstructed echo peak value, and determining an echo characteristic peak of the reconstructed echo signal using a preset characteristic peak positioning algorithm; obtaining echo characteristic point of the echo signal; and measuring the time-of-flight of the echo signal based on the echo characteristic point using a preset measurement algorithm. Using the provided method, the time-of-flight of the ultrasound echo signal can be obtained more accurately through simple calculations.

IPC Classes  ?

• G01F 1/667 - Arrangements of transducers for ultrasonic flowmetersCircuits for operating ultrasonic flowmeters

Abstract

The multilayered fluorescent wafer includes a fluorescent glass layer, a metal reflective film layer with high reflectivity, a sealing silver paste layer with high thermal conductivity, and a metal substrate layer, the layers disposed sequentially from top to bottom.

IPC Classes  ?

• B32B 17/06 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance
• B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• B32B 15/20 - Layered products essentially comprising metal comprising aluminium or copper
• F21V 9/32 - Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material

Abstract

Disclosed is a secondary recommendation method based on a service complementary relation learning model for a RESTful service. The method includes: firstly, establishing a service complementary relation learning model, and setting a service complementary relation rule; on the basis, extracting an initial service complementary relation, expanding the initial service complementary relation with service function similarity information, and creating a complementary relation graph structure; secondly, conducting representation learning on the complementary relation graph structure in combination with a mask graph attention mechanism, and obtaining embedded vectors of a RESTful service and a service function; then, computing a distance between the embedded vectors, and reducing the distance between the embedded vectors having a complementary relation with a hinge loss function; and finally, finding the RESTful service having the complementary relation according to user input, and conducting secondary service recommendation.

IPC Classes  ?

• G06N 3/08 - Learning methods

Abstract

The present invention provides a device and method for quickly replacing a flowmeter under calibration in a liquid hydrogen flow metering standard apparatus. The device comprises: a test cold box, a flowmeter under calibration being located in the test cold box that is vacuumized, and the test cold box being connected to a liquid hydrogen flow metering standard apparatus by means of a bayonet structure; a first vacuum pump for vacuumizing the test cold box when the flowmeter under calibration is replaced; a second vacuum pump for vacuumizing a test pipeline; and a pre-cooling apparatus for pre-cooling, when the test pipeline is vacuumized, the test pipeline and a flowmeter under calibration connected to the test pipeline. The present invention can ensure the stability of the overall heat insulation performance of liquid hydrogen flow standard apparatuses, the simplification of the overall operation process of replacing a flowmeter under calibration, and the reduction of the time required for the replacement process.

IPC Classes  ?

• G01F 25/10 - Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters

Abstract

An autonomous environmental perception, path planning and dynamic landing method includes: obtaining three-dimensional environment information in real time; determining a global starting point and a global end point, and generating an initial path; optimizing the initial path based on a local path optimization algorithm to obtain a first optimized path; when a perception threshold of the current position of the unmanned aerial vehicle is greater than a preset threshold, optimizing the initial path based on a frontier-perceived path optimization method to obtain a second optimized path and a local end point; when the unmanned aerial vehicle advances to the local end point, switching to optimizing the initial path in real time based on the local path optimization algorithm; and when the unmanned aerial vehicle arrives at the global end point, carrying out dynamic landing based on a deep reinforcement learning algorithm.

IPC Classes  ?

• G05D 1/644 - Optimisation of travel parameters, e.g. of energy consumption, journey time or distance
• G05D 1/622 - Obstacle avoidance
• G05D 1/654 - Landing
• G05D 101/15 - Details of software or hardware architectures used for the control of position using artificial intelligence [AI] techniques using machine learning, e.g. neural networks
• G05D 109/20 - Aircraft, e.g. drones

Abstract

A manipulator execution path planning method for a complex space guided measurement task, includes: determining a measurement space of a manipulator and a starting point and a target point of a path; determining an obstructed space and a free space of the measurement space and a proportion of the obstructed space in the measurement space using a collision algorithm, and classifying and constructing a space compression model according to the proportion of the obstructed space in the measurement space to compress the measurement space and remove an invalid space; finding candidate paths for connecting the starting point and the target point by constructing an adjacent node tree connected topology network; finding a required path in the candidate paths, and performing high-order curve fitting to obtain a final path; discretizing the final path, and solving joint angles of the manipulator to obtain a joint track.

IPC Classes  ?

• B25J 9/16 - Programme controls

Abstract

A device and method for detecting Curie temperature of a permanent magnet material is provided, and relates to the technical field of magnetic material detection. The device includes a detection coil, two ends of the detection coil are respectively fixed by a sample fixing tube; a temperature test box arranged inside the detection coil, the temperature test box is provided with a piercing hole for a permanent magnet material sample to be tested to pass in and out, the temperature test box is communicated with a temperature control device; a temperature sensor arranged in the temperature test box; and a magnetic flux integrator connected with the detection coil.

IPC Classes  ?

• G01N 25/12 - Investigating or analysing materials by the use of thermal means by investigating changes of state or changes of phaseInvestigating or analysing materials by the use of thermal means by investigating sintering of critical pointInvestigating or analysing materials by the use of thermal means by investigating changes of state or changes of phaseInvestigating or analysing materials by the use of thermal means by investigating sintering of other phase change

Abstract

A magnetic material and method prepares high-performance composite ferrite for a self-biased circulator. The preparation method includes: (1) preparing BaM ferrite initial powder and NiCuZnSn ferrite initial powder, respectively; (2) mixing the BaM ferrite initial powder, the NiCuZnSn ferrite initial powder and deionized water uniformly in proportion, performing ball milling in a high-energy ball mill, and then obtaining mixed powder after primary pre-sintering, secondary pre-sintering and secondary ball milling; and (3) obtaining the high-performance composite ferrite for the self-biased circulator by a low-temperature magnetic field orientation forming technology and magnetic field heat treatment. According to the present invention, the saturated magnetization intensity is enhanced better by compounding the BaM ferrite powder and the NiCuZnSn ferrite powder and through a high-energy ball milling technology, the low-temperature magnetic field orientation forming technology and the magnetic field heat treatment technology, thereby improving the microstructure and the magnetic characteristic of bi-phase composite ferrite.

IPC Classes  ?

• C01G 49/00 - Compounds of iron
• H01F 1/10 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites

Abstract

A device is for surface strengthening of a metal plate based ultrasonic vibration. The device includes an ultrasonic vibration tool holder and a cutting tool. The ultrasonic vibration tool holder is internally provided with an ultrasonic transducer and an ultrasonic booster; the ultrasonic transducer is configured to transmit vibration to the ultrasonic booster, the ultrasonic booster is configured to drive longitudinal torsion vibration of the cutting tool; an end of the ultrasonic booster facing towards the cutting tool is provided with an adjustment assembly configured for adjusting a longitudinal torsion angle and a rotation speed. Since the device includes the adjustment assembly, the longitudinal torsion angle and the rotation speed of the device can be adjusted according to different processing requirements, so as to perform ultrasonic vibration extrusion strengthening on surfaces of titanium alloy plates and improve surface integrity including microhardness and residual stress.

IPC Classes  ?

• C22F 3/00 - Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
• B26D 7/08 - Means for treating work or cutting member to facilitate cutting

Abstract

Disclosed is a cloud-native application programming interface (API) recommendation method fusing data augmentation and contrastive learning. Service information is included on the basis of a service information double-graph structure, and a mutual attention mechanism is designed to compute an importance degree of each layer of information. A data optimization method for sequence information based on functional similarity and a computation method for similarity between services based on two parts of information are provided; on this basis, data of a service invocation sequence is augmented with the idea of contrastive learning to form an augmented sequence pair; a computational contrastive loss function is combined with a pair-wise recommendation loss function to optimize an overall model, thereby improving the effect of a service recommendation model; and according to a feature embedding representation result of a service, pair-wise recommendation scores are computed to complete service recommendation.

IPC Classes  ?

• G06F 9/54 - Interprogram communication
• G06F 17/16 - Matrix or vector computation

Abstract

The present disclosure discloses a rapid measuring device and a measuring method for permanent magnet failure temperature. The device includes a measurement system (1), an infrared thermal imager (2), a vacuum Hall probe (3) and a laser heating device (4). A permanent magnet (5) is used as a sample. These components work together to achieve rapid and accurate measurement of the failure temperature of the permanent magnet sample (5). The present disclosure uses light heating, infrared thermal imaging and surface magnetic field measurement. The heating speed is fast, the temperature measurement is accurate, and the failure temperature measurement of large permanent magnet materials can be achieved.

IPC Classes  ?

• G01N 27/72 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
• G01J 5/00 - Radiation pyrometry, e.g. infrared or optical thermometry
• G01J 5/48 - ThermographyTechniques using wholly visual means
• G01N 1/44 - Sample treatment involving radiation, e.g. heat

Abstract

A ground-high altitude platform-satellite (G-H-S) laser communication system and method based on anisotropic non-Kolmogorov turbulence are provided, and the system includes a ground transmitting terminal, a HAP, a satellite terminal, a ground-HAP uplink and an HAP-satellite uplink. When laser beams are transmitted upwards from the ground transmitting terminal and through the HAP, the laser beams are affected light intensity scintillation, beam drift, and angle of arrival fluctuation, and are transmitted through vacuum channels and received by receiving antenna of the satellite terminal. The HAP is located at stratosphere, and an anisotropic non-Kolmogorov turbulence model is suitable for analyzing turbulence effect in stratosphere. Thus, the anisotropic non-Kolmogorov turbulence model is used to research transmission characteristics of the laser beams. Meanwhile, a hexagon quadrature amplitude modulation (HQAM) is used in the G-H-S laser communication system, which optimizes system performances on basis of improving communication quality, and enhances stability of communication links.

IPC Classes  ?

• H04B 10/118 - Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication
• H04B 7/185 - Space-based or airborne stations
• H04B 7/195 - Non-synchronous stations

Abstract

Disclosed is a drag testing apparatus with variable flow field curvature and jet angle, comprising a main flow field supply device, a main flow field flow control device, a biomimetic circular test hose, a main flow field curvature adjustment device, a jet supply device, a jet flow control device, a multi-directional jet angle adjustment device, a pipe telescoping device, and a drag testing device. A liquid outlet of the main flow field supply device may be connected to a liquid inlet of the main flow field flow control device, a liquid outlet of the main flow field flow control device may be connected to a liquid inlet of the biomimetic circular test hose, a liquid outlet of the biomimetic circular test hose may be connected to a liquid inlet of the pipe telescoping device, and a liquid outlet of the pipe telescoping device may be connected to a water tank.

IPC Classes  ?

• G01M 9/06 - Measuring arrangements specially adapted for aerodynamic testing

Abstract

Disclosed in the present invention are a colorectal cancer prognosis analysis method, system and device. The method comprises the following steps: step 1, acquiring RNA expression data and clinical information of a colorectal cancer patient, and removing zero-value genes from a sample; step 2, performing differential analysis on RNA expression data and clinical information, which satisfy requirements, of the colorectal cancer patient from step 1, and screening for colorectal cancer prognosis-related differential genes; step 3, performing cross analysis on the differential genes obtained in step 2 and ferroptosis-related genes to acquire the ferroptosis-related genes that are related to colorectal cancer prognosis; step 4, establishing, by means of LASSO-Cox regression analysis, a colorectal cancer prognosis model based on the ferroptosis-related genes selected in step 3; and step 5, performing prognosis analysis on the RNA expression data and clinical information of the colorectal cancer patient on the basis of the prognosis model constructed in step 4. Upon verification, the prognosis model constructed by the present invention can be applied to the prognosis of colorectal cancer patients.

IPC Classes  ?

• G16B 25/10 - Gene or protein expression profilingExpression-ratio estimation or normalisation
• G16H 50/30 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for calculating health indicesICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for individual health risk assessment

Abstract

The present invention provides a method, system, and apparatus for the prognosis of ovarian cancer. The method comprises the following steps: firstly, acquiring medical record data of ovarian cancer patients and excluding the medical record data without patient survival information, wherein the medical record data comprises patient clinical data and gene expression data of ovarian cancer; secondly, performing cluster analysis on the gene expression data and inflammatory genes of the ovarian cancer patients meeting the requirements in the first step and selecting inflammatory genes with differential expression; thirdly, performing univariate Cox regression analysis on the differential gene expression levels acquired in the second step and the survival rate of ovarian cancer patients, selecting inflammatory genes with prognostic values, and through multivariate Cox regression analysis, selecting inflammatory genes with significant prognostic values for ovarian cancer; fourthly, establishing a prognostic model on the basis of the inflammatory genes with significant prognostic values for ovarian cancer selected in the third step; and fifthly, on the basis of the prognostic model established in the fourth step, performing prognosis of the medical record data of ovarian cancer patients. By verification, the prognostic model established by the present invention can be used for the prognosis of ovarian cancer patients.

IPC Classes  ?

• G16H 50/30 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for calculating health indicesICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for individual health risk assessment

Abstract

A denoising method based on a multiscale distribution score for a point cloud includes: constructing a two-layer network model based on multiscale perturbation and point cloud distribution, where the two-layer network model includes a feature extraction module for extracting a feature of the point cloud and a displacement prediction module for predicting a displacement of a noise point; constructing a point cloud noise model for improving a denoising effect and retaining a sharp feature and avoiding reducing quality of point cloud data; extracting a global feature h by inputting the point cloud data into the feature extraction module; iteratively learning the displacement of the noise point by the displacement prediction module according to a feature obtained by the feature extraction unit; and defining a loss function of network training, and completing convergence under the condition that the loss function reaches a set threshold or a maximum number of iterations.

IPC Classes  ?

• G06T 5/70 - DenoisingSmoothing
• G06T 5/60 - Image enhancement or restoration using machine learning, e.g. neural networks

Abstract

Disclosed are an apparatus and method for detecting the Curie temperature of a permanent magnet material, which are related to the technical field of magnetic material detection. The apparatus comprises: a detection coil, the two ends of the detection coil being respectively secured via a sample securing tube; a temperature test box arranged inside the detection coil, the temperature test box having disposed thereon a pass-through hole allowing a permanent magnet material sample to be tested to be inserted and removed, and the temperature test box being communicated with a temperature control apparatus; a temperature sensor arranged in the temperature test box; and a flux integrator connected to the detection coil. The invention involves placing a permanent magnet material sample to be tested into a temperature test box arranged inside a detection coil, using a temperature control apparatus to change the temperature in the temperature test box, using a pulling method to change the magnetic flux in the coil, and thus measuring at corresponding temperatures the Curie temperature of the permanent magnet material sample to be tested. The detection apparatus of the present invention can quickly and easily detect the Curie temperature of a permanent magnet material, has a simple structure, and is suited for industrial popularization and application.

IPC Classes  ?

• G01N 25/00 - Investigating or analysing materials by the use of thermal means
• G01N 27/00 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means

Abstract

A cross primer isothermal amplification primer set for detecting tobacco ringspot virus, a kit and application thereof are provided. The kit and the method provided by the disclosure have good specificity and negative reaction to quarantine viruses such as southern bean mosaic virus, tomato ringspot virus, Arabidopsis mosaic virus, bean pod mottle virus and the like. The real-time fluorescence detection method has high sensitivity and can detect the RNA template of the tobacco ringspot virus with the minimum concentration of 5 ng/μL. The lowest detectable concentration of RNA template was 0.5 ng/μL. It is very suitable for on-site detection of medical and health, food safety and import and export quarantine, and is easy to be popularized and applied in a wide range.

IPC Classes  ?

• C12Q 1/70 - Measuring or testing processes involving enzymes, nucleic acids or microorganismsCompositions thereforProcesses of preparing such compositions involving virus or bacteriophage
• C12Q 1/6844 - Nucleic acid amplification reactions

Abstract

A digital twin based method for monitoring behavior of a passenger on an escalator includes: first, constructing a digital twin virtual scene of the escalator carrying the passenger; constructing a virtual person model in a physics engine, generating various types of risky behavior in reality, and outputting different types of behavior of a virtual person; second, through a human posture recognition method for monitoring behavior of a passenger, extracting a feature map as an input by means of a visual geometry group 19 (VGG19) pre-training network, to enter part affinity fields (PAFs) and a part confidence map (PCM), so as to complete recognition of human postures; classifying the human postures with a support vector machine; and performing emergency stop control on the escalator under risky behavior of the passenger according to a result of posture classification.

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
• G06T 17/00 - 3D modelling for computer graphics
• G06T 19/20 - Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
• G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
• G06V 10/77 - Processing image or video features in feature spacesArrangements for image or video recognition or understanding using pattern recognition or machine learning using data integration or data reduction, e.g. principal component analysis [PCA] or independent component analysis [ICA] or self-organising maps [SOM]Blind source separation
• G06V 10/774 - Generating sets of training patternsBootstrap methods, e.g. bagging or boosting
• G06V 10/776 - ValidationPerformance evaluation
• G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
• G06V 20/52 - Surveillance or monitoring of activities, e.g. for recognising suspicious objects
• G06V 20/64 - Three-dimensional objects
• G06V 40/20 - Movements or behaviour, e.g. gesture recognition

Abstract

3.

IPC Classes  ?

• C03C 3/32 - Non-oxide glass compositions, e.g. binary or ternary halides, sulfides, or nitrides of germanium, selenium or tellurium
• C03C 3/247 - Silica-free oxide glass compositions containing halogen and at least one oxide, e.g. oxide of boron containing fluorine and phosphorus

Abstract

Provided is a liquid-cooled case which can disperse a cooling liquid by means of a jet cooling technique in an immersed system to dissipate heat uniformly and improve the heat dissipating efficiency. The liquid-cooled case includes cover plates; main boards; a liquid inlet unit, wherein the liquid inlet unit includes a liquid inlet tube and a liquid inlet, the liquid inlet is formed in the case, and one end of the liquid inlet tube is imported into the case through the liquid inlet; and a liquid outlet unit, wherein the liquid outlet unit includes a liquid outlet tube and a liquid outlet, the liquid outlet is formed in the case, and one end of the liquid outlet tube is exported out of the case through the liquid outlet. The liquid-cooled case further includes flow guide blocks which are arranged on the cover plates or the main boards.

IPC Classes  ?

• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
• G06F 1/20 - Cooling means

Abstract

The disclosure discloses a method for inducing Salmonella enteritidis into VBNC state by sodium hypochlorite. The disclosure relates to the field of biotechnology, including preparing culture medium, which is BHI culture medium, and the culture medium is cooled to room temperature, and sterilized by ultraviolet for 15 min. The strain to be tested is incubated in BHI at 37° C. for 24 h in a sterile environment, and the bacterial cells are collected by centrifugation, washed with 0.85% (w/v) sterile physiological saline for 3 times, and then resuspended in 0.85% (w/v) sterile physiological saline to obtain 109 CFU/mL bacterial suspension. The bacteria cells are treated with sodium hypochlorite stress and the VBNC cells are counted.

IPC Classes  ?

• C12N 1/36 - Adaptation or attenuation of cells
• C12N 1/20 - BacteriaCulture media therefor
• C12N 1/02 - Separating microorganisms from their culture media
• C12Q 1/04 - Determining presence or kind of microorganismUse of selective media for testing antibiotics or bacteriocidesCompositions containing a chemical indicator therefor

Abstract

The present invention relates to the technical field of metal material surface treatment, and provides a preparation method for a composite film with a self-repairing function, a product, and a use. The method comprises the following steps: adding cobalt salt, tungsten salt, a complexing agent and a buffering agent into water to obtain a mixed solution, and adjusting the pH value to be acidic to obtain an acidic solution; adding a cerium oxide and a surfactant into the acidic solution to obtain an electrolyte system; and placing a metal substrate in the electrolyte system for electrodeposition to obtain a composite film with a self-repairing function. According to the present invention, constant-potential composite electrodeposition is performed on a metal material substrate, a micron-scale composite film with a self-repairing function and a thickness of 6-8 μm is finally formed on the surface of the metal material, the composite film is continuous and complete and has a compact structure, the hardness is 251.0 HV, and when cracks are generated on the surface, the composite film is placed in 3.5 wt.% NaCl solution for 7 days, that is, in the presence of a corrosive medium Cl-, the cracks are healed.

IPC Classes  ?

• C25D 3/56 - ElectroplatingBaths therefor from solutions of alloys
• C25D 21/14 - Controlled addition of electrolyte components
• C25D 15/00 - Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires

Abstract

A preparation method, a product and an application of a composite membrane with a self-repairing function are provided by the present application, relating to the technical field of surface treatment of metallic materials. The preparation method includes the following steps: adding cobalt salt, tungsten salt, complexing agent and buffering agent into water to obtain a mixed solution, and adjusting a pH value to acidity to obtain an acidic solution; adding cerium oxide and surfactant into the acidic solution to obtain an electrolyte system; and placing a metal substrate in the electrolyte system for electrodeposition to obtain the composite membrane with self-repairing function. By means of constant potential composite electrodeposition on a metallic material substrate, the invention eventually forms a micron-scale composite membrane with a self-healing function and a thickness of 6-8 micrometers on the surfaces of the metallic materials.

IPC Classes  ?

• C25D 21/14 - Controlled addition of electrolyte components
• C25D 3/56 - ElectroplatingBaths therefor from solutions of alloys

Abstract

A molding device and a molding method for an optical fiber preform are provided. The molding device includes a rotating mechanism, an extrusion mechanism, and a cylinder mold that is of a cylindrical structure with two ends each having an opening. After a hollow cladding sleeve is obtained by rotating the cylinder mold through the rotating mechanism, a molten core glass is then reversely extruded into the cladding sleeve in the cylinder mold from bottom to top by the extrusion mechanism to prepare the optical fiber preform.

IPC Classes  ?

• C03B 37/012 - Manufacture of preforms for drawing fibres or filaments
• C03B 25/02 - Annealing glass products in a discontinuous way

Abstract

Disclosed are an underground displacement three-dimensional measurement system and method based on a double mutual inductance voltage contour. The system comprises an on-site measuring device and a remote monitoring system. The on-site measuring device is mainly formed by serially connecting N sensing units and an underground displacement information lumping unit by means of a power line and a communication line. The N sensing units are serially connected, and then are connected between an underground immovable layer and the ground. Each sensing unit comprises a PVC sleeve, a cylindrical air-core coil, a cylindrical magnetic core coil, and a PCB. Two adjacent sensing units form a measurement unit, and relative horizontal displacement and relative vertical displacement are measured by means of cooperation between the cylindrical air-core coil and the cylindrical magnetic core coil of a relative reference unit and the cylindrical air-core coil of the relative displacement unit.

IPC Classes  ?

• G01B 7/24 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in magnetic properties
• E21B 47/022 - Determining slope or direction of the borehole, e.g. using geomagnetism
• E21B 47/0228 - Determining slope or direction of the borehole, e.g. using geomagnetism using electromagnetic energy or detectors therefor
• G01C 9/06 - Electric or photoelectric indication or reading means
• G01V 3/28 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device using induction coils

Abstract

A device for measuring magnetism of a permanent magnet material at a high temperature includes a laser device, a power controller, a light beam controller, a temperature controller, a magnetism measurement unit, temperature sensors, and electromagnet pole heads. The electromagnet pole heads are divided into an upper piece and a lower piece for clamping upper and lower surfaces of a sample. Heat absorbing sheets are respectively fixed on front and rear surfaces of the sample. Temperatures of the heat absorbing sheets are measured by the temperature sensors. The sample is heated by laser, and the temperature controller is used to adjust a ratio of light beams of the power controller and the light beam controller irradiating the heat absorbing sheets on the front and rear surfaces of the sample, thus adjusting the temperatures of the heat absorbing sheets. The magnetism of the sample is measured using the magnetism measurement unit.

IPC Classes  ?

• G01R 33/00 - Arrangements or instruments for measuring magnetic variables
• G01R 33/02 - Measuring direction or magnitude of magnetic fields or magnetic flux

Abstract

2, a molecular weight of 222.2390. The optimum concentration of 4-(Phenylethynyl) benzoic acid in the plant growth regulator is in a range of 10 μM to 200 μM. The plant growth regulator further contains a pesticidally acceptable carrier. The present disclosure further provides the use of 4-(Phenylethynyl) benzoic acid in regulating plant growth. In the use of 4-(Phenylethynyl) benzoic acid in preparing a plant growth regulator of the present disclosure, 4-(Phenylethynyl) benzoic acid has the ABA-like effects, and is more stable, easily available, cheaper, and environmentally friendly. Therefore, the present disclosure is suitable for large-scale popularization.

IPC Classes  ?

• A01N 37/10 - Aromatic or araliphatic carboxylic acids, or thio-analogues thereofDerivatives thereof
• A01N 25/02 - Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of applicationSubstances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
• A01P 13/00 - HerbicidesAlgicides

Abstract

A mechanical control logic actuator for a vacuum toilet includes: a pneumatic valve assembly configured to control an air path of the vacuum toilet and a sewage tank; a vacuum tank configured to provide vacuum compensation for the sewage tank; a first pressure tank configured to provide a power source for the pneumatic valve assembly; a second pressure tank configured to feed gas into the sewage tank; and a sewage pipe configured to discharge sewage in the sewage tank; wherein the first pressure tank controls the air path to be in a circulation state or in a cut-off state through the pneumatic valve assembly, the vacuum tank provides vacuum compensation for the sewage tank, the sewage in the toilet is pumped into the sewage tank, the second pressure tank feeds gas into the sewage tank, the sewage tank is pressurized and the sewage is discharged through the sewage pipe.

IPC Classes  ?

• E03D 5/02 - Special constructions of flushing devices operated mechanically or hydraulically
• E03F 1/00 - Methods, systems, or installations for draining-off sewage or storm water

Abstract

Nilaparvata lugens (Stål) while controlling pests.

IPC Classes  ?

• C12N 15/11 - DNA or RNA fragmentsModified forms thereof
• A01N 63/10 - AnimalsSubstances produced thereby or obtained therefrom
• C07K 14/325 - Bacillus thuringiensis crystal peptides, i.e. delta-endotoxins

Abstract

Disclosed are a Li+ doped metal halide scintillation crystal with a zero-dimensional perovskite structure, a preparation method and use thereof. The scintillation crystal has a chemical formula of Cs3-xCu2I5:xLi, where x is in a range of 0.003 to 0.3. The method for preparing the scintillation crystal comprises the steps of: weighting and fully mixing a CuI powder, a CsI powder and a LiI powder in a molar ratio of 2:(3-x):x in an inert atmosphere to obtain a mixed powder, and growing into the scintillation crystal from the mixed powder by Bridgman Stockbarger method. After excited, the scintillation crystal could emit a broadband blue light in a range of 350-550 nm, with an intensity much higher than that of the original pure component crystal. The existence of Li+ further expands the application of the scintillation crystals from X/γ-ray detection to neutron detection.

IPC Classes  ?

• C30B 11/02 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method without using solvents
• C30B 11/00 - Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method
• G01T 3/06 - Measuring neutron radiation with scintillation detectors

Abstract

Disclosed in the present invention is a power distribution method for a photovoltaic power storage station group to participate in power grid stability control. The method comprises: using a regional main station and substation centralized control system architecture, wherein network topology information of the present region and power control information of photovoltaic power storage stations are integrated into a regional main station; and when a power grid-side stability control apparatus requires the power in the present region to reduce or increase for the sake of an emergency control requirement, the regional main station calculating the optimal power control quantity distribution in the present region according to the magnitude of the reduced or increased power and according to the network topology information of the present region. The present invention can collect and evaluate photovoltaic storage controllable resource information of a regional power grid, and participates in power grid stability control and other auxiliary services; and control quantities of different photovoltaic storage stations are optimized inside a region according to the total power control requirement and a network topology, thereby avoiding the problem of local overvoltage or undervoltage caused by a large control quantity of a photovoltaic storage station.

IPC Classes  ?

• H02J 3/48 - Controlling the sharing of the in-phase component

Abstract

The present invention discloses a high-resistivity sintered samarium-cobalt magnet and a preparation method thereof. According to the present invention, considering the specialty of sintered samarium-cobalt magnetic powder, fluoride or oxide is firstly prepared into nano-powder using high-energy ball milling, and the samarium-cobalt magnetic powder is prepared separately by rolling ball milling or high-speed jet milling, and then a certain electric field is applied in a fluoride suspension to drive the fluoride nano-powder to evenly cover a surface of the samarium-cobalt magnetic powder. The present invention breaks through the technical bottleneck that fluoride/oxide can improve the resistivity of a samarium-cobalt magnet but result in deterioration of the magnetic properties.

IPC Classes  ?

• H01F 1/059 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and Va elements, e.g. Sm2Fe17N2
• H01F 7/02 - Permanent magnets
• H01F 41/02 - 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
• B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling

Abstract

A method for measuring the dynamic specific heat capacity of an adiabatic reaction on the basis of compensation power modulation. The method comprises: compensating a heat dissipation power of a sample in an adiabatic calorimetric reaction process, so as to realize complete adiabaticity of the reaction process; modulating the compensated power, so as to realize temperature rise rate oscillation in the reaction process; and finally performing differential calculation and discrete Fourier transform on an adiabatic reaction temperature of the sample in a modulated state, separating a modulated temperature rise signal from a self-accelerated reaction temperature rise signal, and calculating a dynamic specific heat capacity. By means of modulation, differentiation and spectral analysis, etc., a dynamic change in the specific heat capacity of a sample in a reaction process is solved, which dynamic change cannot be solved by means of traditional adiabatic calorimetry. Compared with a traditional constant specific heat capacity, the dynamic specific heat capacity can more accurately reflect the thermal decomposition process of a sample, such that more accurate kinetic parameters in a thermal decomposition reaction of the sample are solved.

IPC Classes  ?

• G01N 25/20 - Investigating or analysing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity

Abstract

An apparatus and method for measuring the magnetism of a permanent magnet material at high temperature, the apparatus comprising: a laser (1), a power controller (2), a beam controller (3), a temperature controller (4), a magnetism measurement unit (5), a temperature sensor (6), and electromagnet pole ends (7). The electromagnet pole ends (7) comprises upper and lower pole ends, which are used to clamp the upper and lower sides of a sample (13), respectively; heat absorbing pieces (10) are fixed on the front and rear surfaces of the sample (13), respectively; the temperature sensor (6) is used to measure the temperature of the heat absorbing pieces (10); the laser (1) is used to heat the sample (13); the temperature of the heat absorbing pieces (10) is adjusted by the temperature controller (4) by adjusting the proportion of a beam passing through the power controller (2) and beam controller (3) and irradiating on the front and rear surfaces of the sample (13); and the magnetism of the sample (13) is measured by the magnetism measurement unit (5).

IPC Classes  ?

• G01R 33/12 - Measuring magnetic properties of articles or specimens of solids or fluids

Abstract

The present invention discloses a primer set of LAMP-LFD detection for detecting a leaf curl virus of Melia azedaeach L. and a detection method, and belongs to the field of detection of crop diseases. The primer set of LAMP-LFD visual detection includes five primers: CLSV-F3, CLSV-B3, CLSV-FIP, CLSV-BIP and CLSV-LB and one probe primer: CLSV-Pb. The present invention also provides a visual detection method for a leaf curl virus of Melia azedaeach L., which is a combination of a loop-mediated isothermal amplification method and a lateral flow dipstick to establish an LAMP-LFD method to detect CLSV, so that the results of LAMP amplification detection are more obvious and intuitive. The present invention has the characteristics of high specificity, high sensitivity and simple operation, and is suitable for substrate and field use.

IPC Classes  ?

• C12Q 1/6844 - Nucleic acid amplification reactions
• C12Q 1/70 - Measuring or testing processes involving enzymes, nucleic acids or microorganismsCompositions thereforProcesses of preparing such compositions involving virus or bacteriophage

Abstract

Disclosed are methods for preparing a high-performance soft magnetic composites and magnetic toroidal cores thereof. A spherical soft magnetic alloy particle is coated with an insulating layer to form a mixed powder, and the mixed powder is loaded into a mold and subjected to a compression molding. An external magnetic field is applied during the compression molding of the mixed powder, and the external magnetic field is parallel to a working magnetic circuit plane and perpendicular to a normal direction of the working magnetic circuit plane. Then a stress-relief annealing is performed to obtain the high-performance soft magnetic composite.

IPC Classes  ?

• H01F 41/02 - 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
• H01F 1/147 - Alloys characterised by their composition
• H01F 27/255 - Magnetic cores made from particles
• B22F 3/24 - After-treatment of workpieces or articles
• B22F 3/02 - Compacting only
• B22F 1/05 - Metallic powder characterised by the size or surface area of the particles

Abstract

A TPR1 gene related to a low-temperature tolerance of Pomacea, coding protein and application of the gene is disclosed. The disclosure belongs to the field of biotechnology. The present disclosure is rapid, effective and reproducible, and is an important complement to the TPR1 gene family. Pomacea is an important invasive organism, the disclosure is helpful for developing novel biological pesticide, and the low-temperature tolerance of the organism is reduced by blocking the expression of TPR1 gene in Pomacea, so as to control the further northward invasion of Pomacea. Meanwhile, by interfering with the expression of TPR1 gene, the hatching rate of Pomacea eggs can be significantly reduced, and the hatching period of eggs can be prolonged, thereby reducing the harm of Pomacea invasion.

IPC Classes  ?

• C12N 15/82 - Vectors or expression systems specially adapted for eukaryotic hosts for plant cells

Abstract

3323233232222O are used as coordination centers. By means of controlling the temperature of the reaction and the ratio of the reactants, a single crystal material having a size of 0.5 mm is obtained, the material having a relatively high initial magnetic permeability μi of up to 1873.

IPC Classes  ?

• C30B 29/26 - Complex oxides with formula BMe2O4, wherein B is Mg, Ni, Co, Al, Zn or Cd and Me is Fe, Ga, Sc, Cr, Co, or Al
• C30B 7/10 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions by application of pressure, e.g. hydrothermal processes

Abstract

Disclosed are an underground displacement three-dimensional measurement system and method based on a double mutual inductance equivalent voltage. The system comprises an on-site measuring device and a remote monitoring system. The on-site measuring device is mainly formed by serially connecting N sensing units (1) and an underground displacement information gathering unit by means of a power line and a communication line (4). The N sensing units (1) are serially connected, and then are connected between an underground immobile layer (7) and the ground. Each sensing unit (1) comprises a PVC sleeve (12), a hollow cylindrical coil (13), a magnetic core cylindrical coil (14), and a PCB (15). Two adjacent sensing units (1) form a measuring unit (5, 6), and relative horizontal displacement and relative vertical displacement are measured by means of cooperation between the hollow cylindrical coil (13) and the magnetic core cylindrical coil (14) of a relative reference unit and the hollow cylindrical coil (13) of the relative displacement unit. The present invention allows for obtaining rock soil deformation conditions and specific coordinate values from the ground surface to the deep underground, and achieving three-dimensional distributed measurement and remote monitoring of rock mass deformation in a measurement area from the ground surface to the deep underground. Also dislosed are an underground three-dimensional displacement measurement system and a method based on double mutual inductance equivalent voltage.

IPC Classes  ?

• G01B 7/24 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in magnetic properties

Abstract

The present disclosure provides a device for controlling the shape of an aerosol particle condensation growth flow field through an electromagnetic field. The device includes an aerosol growth device and a power supply. The aerosol growth device includes a porous medium, magnetic rubber and an electromagnet group. The magnetic rubber is sleeved in an inner cavity of the electromagnet group, and the porous medium is sleeved in an inner cavity of the magnetic rubber. The magnetic rubber is clung or clings to the porous medium, and the power supply is connected with the electromagnet group. The present disclosure also provides a method for controlling the shape of the aerosol particle condensation growth flow field through the electromagnetic field.

IPC Classes  ?

• B01J 13/00 - Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided forMaking microcapsules or microballoons
• B05B 5/00 - Electrostatic spraying apparatusSpraying apparatus with means for charging the spray electricallyApparatus for spraying liquids or other fluent materials by other electric means
• B05B 12/10 - Arrangements for controlling deliveryArrangements for controlling the spray area responsive to condition of liquid or other fluent material discharged, of ambient medium or of target responsive to temperature or viscosity of liquid or other fluent material discharged

Abstract

A method and device for reducing stray light. The method comprises the following steps: S1, segmenting a measurement range; S2, selecting a group of optical filters (1, 9, 10) in a corresponding working range according to the segments of the measurement range, the optical filters (1, 9, 10) having cut-off ranges and used for filtering spectral energy in other measurement ranges; and S3, transmitting light to a sensor (6) after filtering the light by means of the optical filters (1, 9, 10), measuring each segment of the measurement range by means of the sensor (6) in sequence, and calculating to obtain the reflectivity of the measurement range. The device comprises a light source (2, 7), optical filters (1, 9, 10) and a sensor (6). A group of optical filters (1, 9, 10) in a corresponding working range are arranged in a matched mode according to the segments of the measurement range, the optical filters (1, 9, 10) have cut-off ranges and are used for filtering spectral energy of other measurement ranges, and the optical filters (1, 9, 10) are arranged between the light source (2, 7) and the sensor (6).

IPC Classes  ?

• G01J 3/02 - SpectrometrySpectrophotometryMonochromatorsMeasuring colours Details
• G01J 3/46 - Measurement of colourColour measuring devices, e.g. colorimeters
• G01J 3/28 - Investigating the spectrum

Abstract

A spectrophotometer having double optical paths, and a color measurement method. The spectrophotometer comprises an integrating sphere (6), a light source (9) fitted with a light-transmitting hole (8) of the integrating sphere (6), and a sensor (1) fitted with a measurement port and a detection hole (5) of the integrating sphere (6), a second shutter (4), a semi-reflective and semi-transmissive device (16) and lenses (15, 17) fitted between the detection hole (5) and the sensor (1), and a light guide device and a first shutter (2) fitted between the light guide hole (7) provided on the integrating sphere (6) and the semi-reflective and semi-transmissive device (16). The color measurement method comprises: (S1) closing the first shutter (2), and opening the second shutter (4), so that light, reflected at the measurement port (11), of the surface of a measured object enters the sensor (1) through a transmitting surface of the semi-reflective and semi-transmissive device (16) and the lenses (15, 17) provided to fit the semi-reflective and semi-transmissive device (16), and the sensor (1) measures a spectrum reflection signal on the surface of the object; (S2) opening the first shutter (2), and closing the second shutter (4), so that light, reflected by the internal surface, of the integrating sphere (6) enters the sensor (1) through a reflective surface of the semi-reflective and semi-transmissive device (16), and the sensor (1) measures a spectrum reflection signal of the light source (9); and (S3) calculating a final sampling signal.

IPC Classes  ?

• G01J 3/46 - Measurement of colourColour measuring devices, e.g. colorimeters
• G01J 3/02 - SpectrometrySpectrophotometryMonochromatorsMeasuring colours Details

Abstract

λλλ for channel λ; and S206, calculating and outputting a reflectance.

IPC Classes  ?

• G01J 3/28 - Investigating the spectrum
• G01N 21/25 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands

Abstract

Disclosed is a method for preparing a soft magnetic composite material with a high magnetic conductivity and a low loss, the method comprising: applying a layer of magnetic oxide particles (2) outside a spherical soft magnetic alloy particle (1), so as to form a mixed powder; charging the mixed powder into a die, such that same is compression molded; applying an external magnetic field to the mixed powder during molding, wherein the magnetic field is parallel to the working magnetic circuit plane and perpendicular to the normal direction of the working magnetic circuit plane; and stress-relieving annealing same to obtain the soft magnetic composite material. The preparation method is very simple and convenient, has no severe requirements for a magnetic powder and the apparatus, and has no need to make major improvements to existing apparatuses, and same can achieve a high performance soft magnetic material which only requires the addition of an external magnetic field application apparatus; soft magnetic alloys and magnetic oxides are non-symmetrically distributed in the horizontal and vertical directions of a magnetic ring, resulting in a higher magnetic conductivity and a lower loss in the direction of a working magnetic circuit; and because less apparatuses, less process steps and a simple process are used, the industrial application of the soft magnetic composite material can be rapidly realized.

IPC Classes  ?

• H01F 41/02 - 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
• H01F 1/33 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials mixtures of metallic and non-metallic particlesMagnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metallic particles having oxide skin
• H01F 7/00 - Magnets

Abstract

Disclosed are a method for preparing a high-performance soft magnetic composite material and a magnetic ring thereof. Spherical soft magnetic alloy particles are coated with an insulating layer to form mixed powder; the mixed powder is loaded into a mold so that the mixed powder is pressed for molding; an external magnetic field is applied during the molding process of the mixed powder, and the magnetic field is parallel to a working magnetic circuit plane and perpendicular to the normal direction of the working magnetic circuit plane; and stress-relieving annealing is performed to obtain a soft magnetic composite material. The technical solution is very simple and may achieve a high performance without strict requirements on magnetic powder and equipment. For the asymmetric distribution of a non-magnetic phase, the particles are in a continuous chain-like distribution along the direction of the external magnetic field, thus reducing the magnetic resistance and loss of a horizontal magnetic circuit. For the asymmetric distribution of a magnetic phase, the particles are arranged in a tight and orderly manner along the direction of the external magnetic field, and the small magnetic particles are preferentially filled in a air gap in the plane direction of the magnetic ring, thereby reducing the magnetic resistance and loss of the horizontal magnetic circuit, and achieving high permeability and low loss. The present invention uses less equipment, less process steps and has a simple process, and may quickly achieve the industrial application of the soft magnetic composite material.

IPC Classes  ?

• H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
• H01F 41/02 - 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
• H01F 3/08 - Cores, yokes or armatures made from powder

Abstract

The present invention provides a DNA barcode and method for identifying cuttlefishes, mainly depending on the diversity of mitochondrial DNA, including designing universal primers on conservative regions on both sides of the species-specific variable region, amplifying DNA from cuttlefishes, and sequencing PCR products to obtain DNA sequences, and identifying cuttlefish species based on the similarity by comparing with the species information in the database. The method is advantageous in that it can achieve efficient and specific amplification of DNA from such cephalopods as cuttlefishes, with low requirements for necessary instruments and simple operation processes. In addition, the method can be carried out in most molecular biology laboratories, which greatly improves the probability of success of molecular identification for cuttlefishes and sibling species thereof.

IPC Classes  ?

• C12Q 1/68 - Measuring or testing processes involving enzymes, nucleic acids or microorganismsCompositions thereforProcesses of preparing such compositions involving nucleic acids
• C12Q 1/686 - Polymerase chain reaction [PCR]
• C12Q 1/6888 - Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for detection or identification of organisms

Abstract

For sewage sludge reduction, an apparatus includes a front-end auxiliary filter plate, a back-end auxiliary filter plate, and a plurality of filter plate modules disposed between the front-end auxiliary filter plate and the back-end auxiliary filter plate. Each filter plate module includes a middle main filter plate, a middle auxiliary filter plate, and a plurality of electromagnetic modules comprising an electromagnetic coil wound around an electromagnetic core. The middle main filter plate and the middle auxiliary filter plate are disposed at opposite sides of the electromagnetic modules. A plurality of microwave generators send microwaves through microwave acting channels to irradiate the sewage sludge. An electric current is applied to the electromagnetic coil, attracting the middle auxiliary filter plates and the main filter plates and applying pressure to the sewage sludge.

IPC Classes  ?

• C02F 11/122 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
• B01D 25/164 - Chamber-plate presses, i.e. the sides of the filtering elements being clamped between two successive filtering plates
• B01D 35/06 - Filters making use of electricity or magnetism
• B01D 25/28 - Leaching or washing filter cakes in the filter
• B01D 25/172 - Plate spreading means
• C02F 1/48 - Treatment of water, waste water, or sewage with magnetic or electric fields

Abstract

A bionic robot and a spine apparatus thereof. Magnetorheological fluids are filled in the cavity, the first tube and the second tube to actuate the first end of the piston rod, so that the piston rod is actuated to move along the axial direction of the cavity. The excitation coil is wound around the first tube. When the controller provides a variable current for the excitation coil, the excitation coil produces a variable magnetic field at the first tube, thereby causing a magnetorheological effect that the magnetorheological fluid is in low liquidity and high viscosity. Then, the transmission speed of the piston rod is changed, which is presented as a damping characteristic, reducing the pause and transition in the spine apparatus, and improving the flexibility and the bionic performance of the robot.

IPC Classes  ?

• B25J 9/10 - Programme-controlled manipulators characterised by positioning means for manipulator elements
• B25J 11/00 - Manipulators not otherwise provided for
• B25J 19/06 - Safety devices
• B25J 9/00 - Programme-controlled manipulators
• B25J 9/14 - Programme-controlled manipulators characterised by positioning means for manipulator elements fluid
• B25J 17/00 - Joints

Abstract

Disclosed is a steady-state test method for a heat-conducting property in the direction along the plane of a sheet-like test sample. In the present invention, a sheet sample is locally heated to a thermal equilibrium state, and a heat conductivity coefficient is then calculated according to the integral of a temperature gradient on a heat transfer section. The present invention is characterized in that heat flow uniformity is not required, and the test can be carried out based on a very small area of a sheet sample, so that the surface heat loss power is lower, and the impact of surface heat dissipation on the accuracy of the heat conductivity coefficient test is reduced. Meanwhile, the method characterizes the apparent heat conductivity coefficient of a small area of a sheet, so that quantitative evaluation of the spatial distribution of the heat conductivity coefficients of the non-uniform sheet can be obtained by means of changing test areas. On the basis of the same concept, the method can also be applied to a sheet material with heat conduction anisotropy in the direction along the plane after being slightly modified.

IPC Classes  ?

• G01N 25/18 - Investigating or analysing materials by the use of thermal means by investigating thermal conductivity

Abstract

A road lamp control method is disclosed, comprising steps of determining whether a road lamp lighting condition is satisfied, and controlling the road lamp lighting time period. The method can control ON and OFF and the brightness of the road lamps in real time based on the real traffic flow at night, and thereby ensuring safety of pedestrians and vehicles and saving electrical energy.

IPC Classes  ?

• H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
• G08G 1/01 - Detecting movement of traffic to be counted or controlled
• G08G 1/056 - Detecting movement of traffic to be counted or controlled with provision for distinguishing direction of travel
• H05B 37/02 - Controlling
• F21S 8/08 - Lighting devices intended for fixed installation with a standard
• F21Y 115/10 - Light-emitting diodes [LED]
• F21W 131/103 - Outdoor lighting of streets or roads
• H04W 4/02 - Services making use of location information

Abstract

A high strength glass fiber is prepared by following steps: weighing raw materials according to a mass percentage of 50-60% silica sol, 24-31% aluminum sol, 8-11% magnesia, 4-5% calcium oxide, 0.1-2% titanium dioxide, 0-0.5% ferric oxide, 0.5-2% niobium pentoxide, 0.5-1.5% antimony trioxide, 0.3-1.5% bismuth nitrate, and 0.1-0.5% boric acid. Deionized water is added. The raw material undergoes mixing by ball milling, spray-drying, calcining, isostatic pressing, melting, and wire-drawing. The invention adopts silicon sol, aluminum sol and bismuth nitrate. Through ball milling and spray-drying, silicon aluminum barium plasmas is evenly coated on surface of other oxide powders. Then nano particles, of silica, alumina and bismuth oxide are obtained by calcining. Under the effect of the high specific surface energy of nano particles, and the close contact of each component, high strength glass fiber is obtained in relatively low fiber drawing temperature while the glass melting temperature and time are significantly reduced.

IPC Classes  ?

• C03B 1/00 - Preparing the batches
• C03C 13/00 - Fibre or filament compositions
• C03B 37/02 - Manufacture of glass fibres or filaments by drawing or extruding
• C03C 1/02 - Pretreated ingredients
• C03B 19/06 - Other methods of shaping glass by sintering
• C03B 19/09 - Other methods of shaping glass by fusing powdered glass in a shaping mould
• C03B 19/10 - Forming beads

Abstract

The present disclosure provides a spectrophotometric colorimeter based on LED light source, wherein the spectrophotometric colorimeter includes an integrating sphere, a coupling light path, and a spectrometer. An inner wall of the integrating sphere is arranged with a composite light source consisting of eight LEDs; a sphere wall of the integrating sphere defines an incident aperture; light emitted from each LED enters an interior of the integrating sphere through the incident aperture and is irradiated onto the inner wall. The coupling light path is configured to couple light at a measurement caliber such that the light can enter an incident split and to eliminate stray light from the inner wall. After emitting out from an observation aperture of the integrating sphere, the light enters the incident split through the coupling light path and is irradiated onto a linear-array sensor after being split by a spectral light path; and different pixels of the linear-array sensor correspond to light radiation strengths at different wavelengths.

IPC Classes  ?

• G01N 21/25 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
• G01J 3/02 - SpectrometrySpectrophotometryMonochromatorsMeasuring colours Details
• G01J 3/50 - Measurement of colourColour measuring devices, e.g. colorimeters using electric radiation detectors
• G01J 3/51 - Measurement of colourColour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters

Abstract

This present disclosure provides a sensing cable of parallel spiral transmission line structure for distributed sensing and measuring of rock-soil mass deformation. A circular cross-section of a silicone strip is tightly wounded by two mutually-insulated wires. The two mutually-insulated wires form the spiral cable. The two mutually-insulated wires are wrapped around and covered by a silicone shroud. They constitute a sensing cable. A termination matching impedance is connected to one end of each of the two mutually-insulated wires. A time domain reflectometry measurement instrument is connected to the other end of the two mutually-insulated wires. The present disclosure implements a distributed positioning and measurement of rock-soil mass deformation.

IPC Classes  ?

• G01V 3/00 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation
• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
• G01V 1/00 - SeismologySeismic or acoustic prospecting or detecting
• G01L 5/10 - 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 using electrical means

Abstract

The present invention relates to a synthesizing and separating method, the method comprising: a) catalytically hydrogenating a compound of formula I or pharmaceutically acceptable salt thereof to synthesize a compound of formula II, b) performing optical resolution to the compound of formula II to acquire a compound of formula III. The present invention also relates to a preparation method of optically pure compound of formula III.

IPC Classes  ?

• C07D 209/94 - [b, c]- or [b, d]-condensed containing carbocyclic rings other than six-membered

Abstract

A fused optical fiber Raman frequency shifter and a fully distributed optical fiber sensor for a Raman amplifier. A laser light emitted by an optical fiber pulsed laser device (11) is frequency-shifted by 13.2 THz via the optical fiber Raman frequency shifter to generate a 1660 nm wave band broad spectrum Raman laser light that serves as a broad spectrum light source for the fully distributed fiber optical sensor and is emitted into a sensor optical fiber (17). Deformation and breakage of an optical fiber are detected by utilizing the principle that the reverse Rayleigh scattered light intensity of the sensor optical fiber (17) is modulated by optical fiber strain. An anti-Stokes Raman scattered light of 1550 nm wave frequency generated in the sensor optical fiber (17) is amplified via the optical fiber Raman amplifier. By deducting the effect of strain from the intensity ratio between the anti-Stokes Raman scattered light and the Rayleigh scattered light, temperature information of each optical fiber section is acquired, thus allowing detections of strain and temperature to be free of cross effects. The fully distributed optical fiber sensor utilizes optical time-domain reflectometry to position a detection point on the sensor optical fiber, is applicable in monitoring petrochemical pipelines, tunnels, large-scale civil engineering projects that are of an ultra-long range of within 100 kilometers and in disaster prediction monitoring.

IPC Classes  ?

• G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres
• G01B 11/16 - Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
• G01D 5/353 - 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 optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre

Abstract

A fully distributed optical fiber sensor for an optical fiber Raman frequency shifter for fused Raman amplification effect. A laser light emitted by a 1550 nm optical fiber pulsed laser device (10) is split into two light beams via an optical fiber splitter (11). One light beam is converted into a broad spectrum Stokes Raman light via the optical fiber Raman frequency shifter, while the other light beam, after passing through a delay optical fiber (14), is passed through an optical fiber combiner (15) in conjunction with the broad-band Stokes Raman light to enter a same thread of sensor optical fiber (17); the two light beams, at the point where same meet in the sensor optical fiber (17), are fused together via non-linear mutual interaction and yield a Raman-amplified 1660 nm broad spectrum reverse Rayleigh scattered light. The 1550 nm broad spectrum anti-Stokes Raman light having temperature information and generated in the sensor optical fiber (17) is passed through a narrowband reflection filter (18) and, after a Rayleigh scattering of the 1550 nm laser light is deducted, is entered in conjunction with a 1660 nm Rayleigh scattered light having strain information into an electronic receiver module (19), a digital signal processor (20), and an industrial personal computer (21). The temperature and strain information on the sensor optical fiber (17) are acquired after demodulation. The optical fiber sensor is applicable in monitoring petrochemical pipelines, tunnels, and large-scale civil engineering projects within a range of 60 kilometers and in disaster prediction monitoring.

IPC Classes  ?

• G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres
• G01B 11/16 - Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
• G01D 5/353 - 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 optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre

Abstract

A power cable with a parallel spiral transmission line structure for distributed sensing and measuring of rock-soil mass deformation; a layer of two mutually insulated cables (2) are tightly wound outside a silicon rubber strip (1) having a circular cross-section; the two cables form a spiral; the spiral formed by the two cables is wrapped with a silicon rubber sleeve pipe (3); the two cables are connected to a matching impedance ZL at one end, and connected to a time domain reflectometry measurement instrument (4) at the other end. The cable achieves distributed positioning and measurement of the rock-soil mass deformation.

IPC Classes  ?

• H01B 5/04 - Single bars, rods, wires or stripsBus-bars wound or coiled
• G01L 5/10 - 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 using electrical means

Abstract

A Brillouin optical time domain analyzer of a chaotic laser-related integrated optical fiber Raman amplifier, manufactured by using a chaotic laser-related principle, an optical fiber-stimulated Raman scattered light amplification effect, a strain of coherently amplified Brillouin scattered light, a temperature effect, and an optical time domain reflection principle. In the Brillouin optical time domain analyzer of the chaotic laser-related integrated optical fiber Raman amplifier, spatial resolution of a sensing system is improved by correlation processing a backward probing light of a sensing optical fiber and a local reference light. The difficulty of the optical fiber Brillouin optical time domain analyzer requiring a rigorous locking on a probe laser and a pump laser frequency is solved by employing a continuous-operation high power optical fiber Raman laser as a pump light source for the Brillouin optical time domain analyzer. By using a broadband optical fiber Raman amplifier to replace a narrowband optical fiber Brillouin amplifier, the gain of stimulated Brillouin scattered light backward correlation amplified is increased, the signal-to-noise ratio of the sensing system is improved, and correspondingly the measurement length and the measurement precision of the sensing system are improved.

IPC Classes  ?

• G01M 11/00 - Testing of optical apparatusTesting structures by optical methods not otherwise provided for
• G01B 11/16 - Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
• G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres

Abstract

A chaotic laser-related fully distributed optical fiber Raman and Rayleigh photon sensor, which is based on a chaotic laser-related principle and an optical fiber Rayleigh and Raman fusion scattering sensing principle, and uses an optical time domain reflection principle to perform positioning of a measuring point. The sensor employs an optical pulse sequence of a chaotic laser and fluctuating randomly on a time domain, and, by correlation processing a backward probing light of a sensing optical fiber and a local reference light, allows for improved spatial resolution of the sensing system, for effectively increased number of photons of an incident fiber, for improved signal-to-noise ratio of the sensing system, for improved measurement length and measurement precision of the sensing system, and for simultaneous measurement of onsite deformation and cracking while measuring onsite temperature, while not intersecting mutually. The sensor is provided with characteristics of low costs, extended service life, simple structure, special resolution of 15 cm in height, and great signal-to-noise ratio, and is applicable in petrochemical pipelines and tunnels measured within a range of 30 kilometers, in large-scale civil engineering project monitoring, and in disaster prediction monitoring.

IPC Classes  ?

• G01M 11/00 - Testing of optical apparatusTesting structures by optical methods not otherwise provided for
• G01B 11/16 - Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
• G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres

Abstract

A siphon drainage type rainfall remote measurement device with self-compensation function is provided. The bottom existence of a rain collection barrel (2) is connected via a flexible tube (14) to the bottom of a rainfall measuring tube (13) to which a siphon (5) is attached. The tube (13) and a measurement instrument (6) are installed on a holding frame (9). The instrument (6) is connected to a pressure sensor (12) and an accumulator (11) at the bottom of the tube (13). The whole device is fixed in an outer barrel (1). According to the pressure of the bottom of the tube (13), the sensor (12) measures the height of the water level in the tube (13) which is directly proportional to the rainfall. The sensor (12) signal processed by the instrument (6) is transformed into the rainfall, processed by a compensation algorithm and sent by GSM or GPRS.

IPC Classes  ?

• G01W 1/14 - Rainfall or precipitation gauges

Abstract

A dispersion and loss spectrum self-calibration distributed optical fiber Raman temperature sensor has a dual Raman displacement wavelength dual fiber pulsed laser module consisting of a drive power supply (11), an electronic switch (12), a primary laser (13) and a secondary laser (14), a first combiner (15), a bidirectional coupler (16), a multimode fiber (17), an integrated optical fiber wavelength division multiplexer (18), a second combiner (19), a direct detection system (20), a signal collection and processing system (21) and a display (22). The sensor uses two light sources that have two Raman wavelength shift, wherein the optical fiber backward anti-Stokes Raman scattering peak centre wavelength of the primary light source and the optical fiber backward Stokes scattering peak centre wavelength of the secondary light source are coincided, and the time domain reflection signal of the one-way optical fiber Rayleigh scattering is deducted. Based on the optical fiber Raman scattering temperature-measurement principle, the dispersion and loss spectrum self-calibration method and the optical time domain reflection principle, the optical fiber dispersion and the loss spectrum can be self-calibrated, and the random loss of the temperature-measurement optical fiber and the optical cable used on site caused by bending and pressed stretching can also be self-calibrated.

IPC Classes  ?

• G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres
• G01K 11/12 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in colour, translucency or reflectance
• G01K 11/00 - Measuring temperature based on physical or chemical changes not covered by group , , , or

Abstract

A distributed optical fiber sensor based on Roman and Brillouin scattering comprises a F-P cavity semiconductor wide-band pulse fiber laser (11), an outer cavity semiconductor narrow-band fiber laser (12), a wave-separator (13), an electro-optical modulator (14), an isolator (15), an Erbium-doped fiber amplifier (16), a bidirectional coupler (17), an integrated wavelength division multiplexer (19), a first optical-electro receiving and amplifying module (20), a second optical-electro receiving and amplifying module (21), a direct detection system (22), a transmission narrow-band fiber grating (23), a circulator (24), and a coherent detection system (25). Simultaneous measurement of temperature and strain is realized, and signal-noise ratio is enhanced.

IPC Classes  ?

• G01K 11/32 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in transmittance, scattering or luminescence in optical fibres
• G01B 11/16 - Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
• G01D 21/02 - Measuring two or more variables by means not covered by a single other subclass

Abstract

A siphon drainage type rainfall remote-measurement device with self-compensation function is provided. An outlet at the bottom of a rain collection barrel (2) is connected to the bottom of a rainfall measurement tube (13) via a flexible tube (14). A siphon tube (5) is provided on the tube wall of the rainfall measurement tube (13). The rainfall measurement tube (13) and a measurement instrument (6) are both fixed on a holding frame (9). The measurement instrument (6) is connected to a pressure sensor (12) and an accumulator (11) fixed at the bottom of the rainfall measurement tube (13). The whole measurement device is fixed in an outer barrel (1). According to the pressure of the bottom of the rainfall measurement tube (13), the pressure sensor (12) measures the height of the water level in the rainfall measurement tube (13). The height of the water level is in direct proportion to the rainfall. The signal of the pressure sensor (12) is processed by the measurement instrument (6), transformed into the rainfall, processed by a compensation measurement algorithm, and then sent by GSM or GPRS.

IPC Classes  ?

• G01W 1/14 - Rainfall or precipitation gauges