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7311 results about "Tester device" patented technology

Pressure sensor metering data calibration method and system

The invention provides a calibration method and system for measurement data of a pressure sensor, and the method comprises the steps: obtaining an original output signal of the pressure sensor and synchronous collection data of environment parameters, and carrying out the preprocessing, and obtaining multi-source sensing data and dynamic environment characteristics; based on multi-source sensing data and dynamic environment characteristics, a multi-error coupled comprehensive error model is constructed, and a dynamic compensation coefficient is generated through online parameter identification; according to the dynamic compensation coefficient and a preset confidence evaluation strategy, dynamic compensation calibration is carried out on the sensing data, a high-precision pressure value is generated, and the high-precision pressure value is used for representing a real environment pressure measurement value. By adopting the method, the accuracy and the reliability of the tester in the calibration of the pressure sensor in a multi-error coexistence and complex environment can be improved, and the precision and the stability of the measurement data calibration of the pressure sensor are improved.
Owner:JINAN METROLOGY TESTING INST

Chip test calibration method and chip tester

The invention relates to the technical field of integrated circuit test and calibration, and discloses a chip test and calibration method and a chip tester. The chip test calibration method is applied to a chip test module and specifically comprises the following steps that S101, a starting signal sent by a user terminal is received, environment initialization operation is executed, and after initialization is completed, a system automatically enters a standby mode and waits for an external trigger signal or a user instruction; and S102, synchronously capturing input and output signal waveforms of the tested chip at a preset sampling frequency through a high-precision current sensor and a voltage sampling circuit. Through a dynamic parameter acquisition and real-time compensation technology, a voltage reference error is effectively reduced, the temperature control precision is superior to + / -0.3 DEG C, signal distortion caused by environmental interference is effectively inhibited, a multi-dimensional calibration model is combined with time domain, frequency domain and statistical characteristic analysis, nonlinear errors and system drift can be dynamically corrected, and the system performance is improved. And the attenuation error of a test signal transmission path is lower than 0.02 dB.
Owner:BEIJING VIAGRA TECHNOLOGY CO LTD

Rapid detection method for casing damage of immovable string of injection well based on efficient measurement and adjustment

The invention relates to the technical field of underground casing monitoring, and discloses an injection well immovable string casing damage rapid detection device based on efficient testing and adjusting, the injection well immovable string casing damage rapid detection device comprises a testing vehicle, a top sheave and a casing, one side in the testing vehicle is provided with a ground control system, and the other side in the testing vehicle is provided with a double-roller winch; a cable is wound on the outer side of the double-roller winch, an electromagnetic flaw detection testing instrument is installed at one end of the cable, an oil pipe is arranged in the casing pipe in a sleeved mode, a plurality of packers are sequentially installed between the outer side of the oil pipe and the inner wall of the casing pipe from top to bottom, and a plurality of water distributors are sequentially distributed in the oil pipe from top to bottom. A water injection well efficient testing and adjusting technology and an electromagnetic flaw detection technology are combined, an electromagnetic flaw detection testing instrument is tripped in through a testing vehicle, cable power supply and communication are tested, a ground control system carries out signal acquisition and processing on the electromagnetic flaw detection instrument, and rapid detection of casing damage of a water injection well immovable string is achieved.
Owner:DAQING OILFIELD CO LTD +1

Electronic communication cable detection device

The invention discloses an electronic communication cable detection device in the technical field of cable detection, and the device comprises a workbench, an insulation tester and a dielectric loss tester, the workbench is provided with a darkroom, the axial side wall of the darkroom is symmetrically provided with ports, the ports are internally and fixedly connected with window shades, and the interior of the darkroom is fixedly connected with a defect detection assembly. A roller assembly is fixedly connected to the outer side wall of the darkroom, multi-stage clamping assemblies located on the two sides of the darkroom are symmetrically and fixedly connected to the top of the workbench, a controller is fixedly connected to the workbench, and the flaw detection assembly, the roller assembly, the multi-stage clamping assemblies, the insulation tester and the dielectric loss tester are all in signal connection with the controller. According to the invention, through multi-stage screw-in self-adaption to cables with different diameter specifications, the clamping stability is ensured, and the pressure sensor cooperates with the electrical performance detection instrument and the camera to integrate various detections, so that the detection cost is reduced, the detection accuracy is improved, and the cable to be detected is prevented from being damaged in the detection process.
Owner:HUNAN UNIV OF HUMANITIES SCI & TECH +1

Rotary wheel drying and dehumidifying equipment with moisture content monitoring function

ActiveCN119594484Afast regenerationExtend the adsorption timeAir filterMoisture capacity
The invention discloses rotating wheel drying and dehumidifying equipment with a moisture content monitoring function, the dehumidifying equipment comprises a bottom frame, a drying material barrel, a humidity tester, a box body and an air path assembly, the bottom frame is fixedly connected with the drying material barrel and the box body, the drying material barrel is fixedly connected with the humidity tester, the humidity tester is arranged at the bottom of the drying material barrel, and the box body is fixedly connected with the drying material barrel. The box body is fixedly connected with the gas path assembly, the gas path assembly comprises a drying gas path, the drying gas path comprises a return air filter and a drying electric heater, and the return air filter and the drying electric heater are both connected with the drying material barrel through pipelines; the invention relates to the technical field of drying and dehumidifying equipment, which can ensure continuous dehumidification, uninterruptedly and continuously output dry air, treat large-air-volume and high-humidity air, expand the range of a moisture absorption area, prolong the adsorption time, improve the single-time adsorption effect and ensure that the situation of dehumidification leakage is avoided. The moisture of the dried material is measured through infrared rays, and pollution and damage caused by contact measurement are avoided.
Owner:DONGGUAN SHINI ELECTROTHERMAL MACHINERY

System and method for planning and executing test of electronic device

A method for planning and executing a test of a DUT includes receiving a test description from a user via a GUI, where the test description identifies the DUT and an objective of the test; composing a prompt for querying a large language model (LLM) based on the test description, where LLM includes a trained machine learning algorithm; sending the prompt to the LLM via an API; determining, using the LLM, a test plan for executing the test to be performed in response to the prompt to achieve the objective of the test based on the test description and general testing information, where the test plan identifies a type of test, test instruments for performing the test, a test procedure using the instrument, and parameters of the DUT to be measured according to the test procedure; providing, via the GUI, the test plan to the user for testing the DUT.
Owner:KEYSIGHT TECHNOLOGIES INC

Cable fault detection method and device based on intelligent cable fault testing device

The invention provides a cable fault detection method based on an intelligent cable fault test device and a test device, and the method comprises the steps: synchronously connecting a fault cable and an adjacent healthy cable through a cable fault tester, and enabling the fault cable to be connected with the adjacent healthy cable when a high-voltage pulse is applied; and synchronously capturing an active reflection signal of the fault cable and a passive coupling induction signal of the healthy cable. Through cross-cable signal feature comparison, a real fault signal is accurately identified, a roughly measured fault distance is calculated according to the real fault signal, and fuzziness of traditional waveform interpretation is overcome. According to the spectrum characteristics of the real fault signal, the optimal filtering parameter is adaptively configured for the acoustic-magnetic synchronous positioning instrument, and the signal-to-noise ratio of the accurate fixed point is improved. And accurate point positioning is carried out near the rough measurement distance, and secondary verification is carried out at the corresponding position of the healthy cable, so that closed-loop positioning of the fault is completed in a mode of confirming that no sound magnetic signal exists. According to the invention, accurate extraction and positioning guidance of fault features are realized, and the accuracy and efficiency of cable fault detection are greatly improved.
Owner:WUHAN WUGAO ELECTRIC CO LTD

Subsurface buoy shell strength strain test method and system

The invention belongs to but is not limited to the technical field of seabed monitoring, and particularly relates to a strain test method and system for subsurface buoy shell strength, and the method comprises the steps: S1, selecting points on the surface of a shell, and pasting strain gauges; s2, putting into a sealed kettle, and injecting water and pressurizing; s3, testing the strain condition of the shell by using a strain tester; and S4, the pressure tolerance degree of the shell is analyzed through calculation. The buoyancy provided by the floating body shell and the overall weight of the subsurface buoy are calculated in detail, and the needed ballast balance weight is accurately measured and calculated. Buoyancy and gravity balance is verified through dynamic simulation, it is ensured that the subsurface buoy can stably suspend or settle in water, and the design feasibility and the actual application effect are improved.
Owner:NAVAL UNIV OF ENG PLA

In-situ micro-nano impact indentation testing instrument

The present invention relates to an in-situ micro-nano impact indentation testing instrument, falling within the technical field of material micromechanical testing. The instrument comprises a nitrogen generation module, an environmental chamber, a high / low temperature loading module, an “optical-infrared” in-situ monitoring module, an “electromagnetic-piezoelectric” coupling impact module, etc. After the nitrogen is introduced into the environmental chamber and the test area is determined by microscopic imaging, the “electromagnetic-piezoelectric” coupling impact module can drive an indenter to indent a specimen. An acoustic emission sensor embedded in the high / low temperature loading module can monitor the surface crack propagation of the specimen. The “optical-infrared” in-situ monitoring module can perform real-time high-speed optical imaging and infrared imaging on the impact indentation process. The present invention can perform micro-nano impact indentation testing on the material at high or low temperatures.
Owner:JILIN UNIVERSITY

Mechanical property tester for soil body under dry-wet or freeze-thaw cycle effect

The invention discloses a mechanical property tester for a soil body under a dry-wet or freeze-thaw cycle effect. The mechanical property tester comprises a test frame, a container, a water tank group, an upper loading assembly, a lower loading assembly, an annular loading assembly, a shearing assembly, a displacement detection assembly, a control device and the like, the testing frame is provided with a bottom plate and a plurality of sliding grooves. The bottom of the container is in detachable sealing fit with the bottom plate; the water tank group is used for injecting a solution; the upper loading assembly is used for carrying out compaction sample preparation or axial loading on the sample in the container; the lower loading assembly adjusts the axial position of the sample; the annular loading assembly applies radial pressure to the sample; the shearing assembly is used for shearing and damaging the sample; the displacement detection assembly is arranged on the upper loading assembly, the annular loading assembly and the shearing assembly; the control device is connected with the upper loading assembly, the lower loading assembly, the annular loading assembly, the shearing assembly and the displacement detection assembly. According to the invention, the function of continuously testing the mechanical properties by using a single sample and single equipment without taking out the sample is realized, and the corresponding operation steps and equipment are greatly simplified.
Owner:XIAMEN UNIV

Power adapter parameter dynamic optimization method for prolonging service life of equipment

The invention discloses a power adapter parameter dynamic optimization method for prolonging the service life of equipment, and relates to the technical field of adapter performance optimization, and the method comprises the steps: monitoring and recording the output voltage, current and power factor parameter changes of a power adapter in real time under static and dynamic load conditions by using a test instrument; identifying the trend and reason of abnormal parameter change; performing thermal design optimization and temperature management on the power adapter; performing over-power and over-current limitation on the pulses one by one; introducing a power factor correction circuit; optimizing the switching frequency and the design of an output filter; a load line adjusting circuit is introduced, and space is reserved for dynamic ripples when output current jumps; and evaluating whether the optimization effect reaches an expected target or not. By introducing the power factor correction circuit and the load line adjustment circuit, the power factor of the power adapter is improved, the harmonic pollution is reduced, the stability of the output voltage of the power adapter is improved, and the performance of the power adapter under the dynamic load condition is improved.
Owner:SHENZHEN KEYUANTAI IND CO LTD

Efficient online ICT intelligent testing device

The invention relates to the technical field of ICT testing, in particular to an efficient online ICT intelligent testing device which comprises a machine table, a tester is fixedly mounted at the top of the machine table, an air cylinder is fixedly mounted at the top of the tester, a mounting seat is fixedly mounted at the output end of the air cylinder, and limiting rods which are symmetrically arranged in pairs are mounted in the tester. A limiting rod is arranged at the top end of the mounting seat, a test board slides on the outer wall of the limiting rod, an air pump is fixedly mounted at the bottom end of the test board, a clamping mechanism for fixing a circuit board is arranged at the top end of the test board, and a pressure detection mechanism for detecting the circuit board is arranged at the bottom end of the mounting seat. The air inlet speed is automatically adjusted through the thickness of the circuit board, the circuit board is protected, pseudo soldering spots are accurately positioned through the air cylinder, the probe and the displacement sensor, the air cylinder is used for driving components to move, the welding spots with cracks are detected through vibration, and the detection efficiency and reliability are improved.
Owner:SUZHOU HONGFENG ELECTRONIC TECH CO LTD

Micro-nano impact press-in tester operation monitoring system based on digital twinning

The invention provides a micro-nano impact press-in tester operation monitoring system based on digital twinning, and is suitable for the field of precise instrument maintenance. The system realizes multi-physical field coupling modeling in a micro-nano press-in test through a digital twinning technology, and can monitor the state of an instrument in real time with high precision, predict faults and perform dynamic optimization. The system is integrated with a high-precision sensor, data such as micro force, extremely high temperature and nanoscale displacement are collected in real time, a digital twin model is constructed, and the operation state of an instrument is mapped. Historical and real-time data are analyzed by means of a machine learning algorithm, potential faults can be accurately predicted, maintenance suggestions can be provided, and the precision retentivity and the test stability of the instrument under the material service working condition are ensured. The interaction center provides a visual interface, supports real-time monitoring, dynamic adjustment and early warning functions, and remarkably improves the intelligent maintenance level of the instrument. The invention is suitable for the fields of material science, micro-nano mechanical test and the like, and provides an innovative precise instrument intelligent management scheme.
Owner:JILIN UNIVERSITY

Novel concrete pavement hardness detection device

The invention discloses a novel concrete pavement hardness detection device, and belongs to the technical field of detection. The invention discloses a novel concrete pavement hardness detection device, and belongs to the technical field of road engineering detection. The device comprises a springback tester, an ultrasonic tester and an analysis system, and equipment credibility parameters are generated through a springback confidence model (quantitative impact energy / angular deviation) and an ultrasonic confidence model (quantitative frequency / probe centering error); combining a pavement characteristic model (analyzing water content / temperature / steel bar density) to output an environment adaptation coefficient; further dynamically calculating a springback risk coefficient and an ultrasonic risk coefficient based on a risk model (fused vibration / carbonization depth); and finally, outputting a calibration intensity value through the intensity correction model. The method solves the defects of weak anti-interference capability and insufficient precision of a traditional method, effectively improves the detection efficiency, and is suitable for high-precision scenes such as expressways and airport runways.
Owner:SHANDONG DEYUAN NEW BUILDING MATERIALS CO LTD

Dry-type transformer testing device

The invention discloses a dry-type transformer testing device, and relates to the technical field of testing devices, the dry-type transformer testing device comprises a workbench and a transformer main body, the transformer main body is installed on the workbench, the transformer main body is provided with a wiring terminal, and one side of the workbench is provided with a testing assembly for testing the transformer main body. According to the dry-type transformer testing device, when the brush is in contact with the outer wall of the wiring terminal and rotates, dirt, dust or other impurities on the outer wall of the wiring terminal can be effectively cleared away, through the clearing work, the insulation resistance tester body can check and measure the wiring terminal more accurately, and the testing efficiency of the dry-type transformer is improved. Therefore, potential connection problems, corrosion or abrasion and the like can be found easily, misjudgment or missing detection is avoided, and after interference factors of dirt and impurities are eliminated, the accuracy and reliability of a detection result can be improved.
Owner:SHANDONG ZHONGYING ELECTRIC POWER CO LTD

Electronics tester

A tester apparatus is described. Various components contribute to the functionality of the tester apparatus to facilitate movement of a wafer pack holding a vacuum without human oversight. These functionalities include a latch system to keep the wafer pack intact and a pressure sensing system to detect and relay a pressure in the wafer pack.
Owner:AEHR TEST SYST

Circuit testing system and method and related equipment

The invention provides a circuit test system and method and related equipment, and the test system comprises a test mold, electronic test equipment and computing equipment, can test a plurality of circuit parameters in parallel, can complete a large number of tests in a short time for circuit boards produced in batches, can run according to a preset program, and is high in test efficiency. The test result is more accurate and stable, a high-precision test instrument can be equipped, tiny voltage and current changes can be accurately measured, the device has the characteristics of high efficiency and stability, the test cost can be reduced, defective circuit boards can be found and removed in time, defective products are prevented from flowing into the next process, the defective products are prevented from flowing out, and the rework cost is reduced. The test data can be automatically recorded and stored, subsequent data analysis and quality tracing are facilitated, and the test system has obvious advantages in the aspects of efficiency, precision, cost, data management, repeatability and the like and is suitable for large-scale and high-precision circuit board production requirements.
Owner:PRIME TECH GUANGZHOU INC

Power cable multi-defect nondestructive testing method and system based on broadband impedance spectroscopy

According to the power cable multi-defect nondestructive testing method and system based on the broadband impedance spectrum, impedance characteristics of a cable under different frequencies are measured, frequency domain data are converted into time domain data through inverse Fourier transform, and accurate positioning and evaluation of internal defects of the cable are achieved; the invention discloses a power cable multi-defect nondestructive testing method based on a broadband impedance spectrum. The method comprises the following steps: step 1, signal output and acquisition; the method comprises the steps that a broadband impedance spectrum tester is used for outputting a broadband sine wave voltage signal, frequency domain measurement data are collected, and the frequency domain measurement data are impedance data of a cable under different frequencies; 2, carrying out time-frequency conversion; converting the frequency domain measurement data into time domain data through inverse Fourier transform, generating a time-amplitude curve, and analyzing the electrical characteristics of the cable; 3, establishing a defect identification model; analyzing the electrical characteristics of the cable at different frequencies by using the transmission line model, and evaluating the state of the cable; step 4, defect positioning and evaluation; and 5, displaying and analyzing a result.
Owner:HUANENG WEINING WIND POWER GENERATION CO LTD

Filling body top plate stability monitoring system and method for mining

The invention discloses a filling body top plate stability monitoring system for mining. The system comprises a rectangular wooden baffle plate; filling materials; a copper grid mesh; the resistivity tester is used for monitoring the resistivity change condition of the self-sensing filling body material and automatically adjusting the test frequency and voltage according to the data monitored by the sensor module; the sensor module is used for monitoring the change of moisture content, temperature and component proportion in the self-sensing filling material; the central control module comprises a data collection unit, a data processing unit, a stability model unit and an alarm and early warning unit, and the data collection unit is responsible for collecting resistivity data monitored by the resistivity tester in real time and various data of geological exploration, field observation and numerical simulation; the data processing unit is responsible for processing the received resistivity data and various data, and the stability model unit is responsible for constructing a stability model and judging the stability state of the filling body roof according to the change condition of the resistivity.
Owner:XINJIANG INST OF ENG

Power system time synchronization tester detection management method

The invention discloses a power system time synchronization tester detection management method, and relates to the technical field of power system testing and monitoring, and the method comprises the steps: S1, connecting each time synchronization tester to a central management platform, and starting initial time synchronization; s2, generating a synchronous correction instruction based on the time deviation data reported by each tester; s3, sending a synchronous correction instruction to each tester, and performing time deviation correction; s4, monitoring the time deviation of each tester in real time, and ensuring the synchronization precision after correction; s5, when it is detected that the time deviation exceeds a preset threshold value, triggering a re-correction process; according to the power system time synchronization tester detection management method, the problem of synchronization coordination caused by inconsistent time deviation correction in a multi-device synchronization process in the prior art is solved.
Owner:CHENGDU FUHE POWER AUTOMATION COMPLETE EQUIP

Fan blade lightning protection grounding loop resistance measuring system and method

The invention discloses a fan blade lightning protection grounding loop resistance measurement system and method. The system comprises an unmanned aerial vehicle resistance measurement system, a conductive sucker, a test lead and a direct current resistance tester. The unmanned aerial vehicle resistance measuring system comprises an unmanned aerial vehicle hanging bracket, an unmanned aerial vehicle, an unmanned aerial vehicle camera, an air pump, a control system and a conductive suction cup hanging bracket. The unmanned aerial vehicle hanging bracket is fixed to the bottom of an unmanned aerial vehicle, the unmanned aerial vehicle camera, the air pump and the control system are fixed to the unmanned aerial vehicle hanging bracket, the upper end of the conductive suction cup hanging bracket is fixed to the unmanned aerial vehicle hanging bracket, the conductive suction cup is fixed to the conductive suction cup hanging bracket, and the air pump and the control system are connected with the conductive suction cup. According to the system and the method, the problem that the resistance of the lightning protection grounding loop of the blade of the wind turbine generator cannot be directly detected in the installation process and the operation and maintenance process can be solved.
Owner:XIAN THERMAL POWER RES INST CO LTD

Sample position and patient information input system of full-automatic blood coagulation tester

The invention discloses a sample position and patient information input system of a full-automatic blood coagulation tester, and particularly relates to the technical field of medical detection equipment. Analyzing the pressure fluctuation of the sample needle in the sample suction process at different positions through a residual risk judgment module, and judging whether a trace residual risk exists or not; the aerosol diffusion condition is dynamically analyzed through a cross contamination assessment module, and the cross contamination risk of the sample is assessed; the safety determination module determines the safety of the sample detection process according to the residual risk and the cross contamination risk; the positioning deviation evaluation module evaluates the influence of the positioning deviation of the sample by analyzing the temperature distribution gradient; the consistency evaluation module analyzes an information transmission error and evaluates the input consistency of a sample source and patient information; and the comprehensive adjustment module performs comprehensive analysis, evaluates the reliability of a sample detection result, and dynamically adjusts the sample site distribution and information input process, thereby providing more scientific and robust support for clinical diagnosis.
Owner:BEIJING ZHONGCHI WEIYE TECH DEV CO LTD

Integrated circuit margin measurement for structural testing

Structural testing of a semiconductor integrated circuit (IC), including scanning test patterns or test conditions into internal circuits of the semiconductor IC, for example from a tester device. A timing margin may be measured during the structural test. The margin is measured based on a characteristic of a comparison between a test signal path of the semiconductor IC and a delayed signal path, the delayed signal path being a signal of the test signal path delayed by a variable delay time. An output of the margin measurement sensor may be scanned out, for instance to the tester device.
Owner:PROTEANTECS LTD

Portable loop resistance tester

The invention relates to the technical field of resistance test equipment, in particular to a portable loop resistance tester, which comprises a test and acquisition module used for acquiring current and voltage signal data of a tested product, analyzing a loop contact state and calculating a loop resistance value and impedance characteristic parameters; the control and output module is used for performing high-precision constant-current output and self-adaptive adjustment; the interaction and printing module is used for receiving a user operation instruction and displaying current and voltage signal data and a resistance value of a tested product, and meanwhile, printing is performed through a built-in thermal printer according to the user instruction; the power supply module is used for stably supplying power to equipment; and the intelligent diagnosis module is in butt joint with the cloud case library, automatically diagnoses related defect types influencing the loop resistance test, and generates a health assessment report. Therefore, the problems of small current output, insufficient sampling precision, single operation mode and the like in the prior art are solved.
Owner:BAODING DABANG ELECTRICAL EQUIPMENT MANUFACTURING CO LTD

Ultrahigh-temperature thermal expansion coefficient tester

The invention discloses an ultrahigh-temperature thermal expansion coefficient tester, which relates to the technical field of detection equipment and comprises an equipment platform, a guide rail, a fixed side and a movable side, the guide rail is arranged on the equipment platform, the fixed side is arranged on one side of the equipment platform, and the movable side is arranged on the guide rail in a sliding mode. The fixed side comprises a displacement detection module and a bearing support; one end of the bearing support is connected with the detection end of the displacement detection module; the moving side comprises an induction heating furnace and a temperature detection module; an insertion opening is formed in the side, facing the fixed side, of the induction heating furnace, and the bearing support enters the induction heating furnace through the insertion opening. According to the invention, the measured material is heated in an induction heating manner, so that the heat loss is greatly reduced, the energy consumption ratio of the equipment is reduced, and meanwhile, the limiting temperature of the thermal expansion coefficient tester is increased. The insulating layer can reduce heat loss, improve the heating efficiency, reduce the temperature gradient in the sample and improve the test precision. And the temperature change condition is directly measured through the infrared thermometer, so that the measurement is more accurate.
Owner:NINGBO HIPER VACUUM TECH CO LTD

Method, medium and system for rapidly judging damaged or defective lithium battery

The invention provides a method, a medium and a system for rapidly judging a damaged or defective lithium battery, and belongs to the technical field of product detection. And multi-dimensional characteristics such as a temperature change matrix, a voltage matrix, a power matrix, a resistance matrix, a cross-correlation index matrix, a harmonic change matrix and a reverse charging and discharging power matrix are constructed, and the battery performance is comprehensively represented. Thermal imaging is adopted to obtain surface temperature distribution, a direct-current internal resistance tester and an alternating-current impedance spectroscopy analyzer are utilized to measure internal resistance, and Fourier transform is carried out to analyze voltage harmonic characteristics. And analyzing the collected multi-dimensional matrix data based on a deep neural network model of a multi-head attention mechanism, and outputting a battery health state score and a damage type. According to the method, electrochemical performance and thermodynamic characteristics of the battery are comprehensively considered, and rapid and accurate evaluation of the lithium battery health state is realized.
Owner:INSPECTION & QUARANTINE TECH CENT SHANDONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU

Insulation state evaluation method and system for online monitoring device of voltage transformer

The invention discloses an insulation state evaluation method for a voltage transformer online monitoring device, and the method comprises the following steps: obtaining an original dielectric loss angle tangent value through a dielectric loss tester, and collecting the temperature and relative humidity through an environment sensor; performing temperature and humidity compensation on the collected dielectric loss angle tangent value to obtain a compensated dielectric loss angle tangent value; performing trend prediction on the compensated dielectric loss angle tangent value based on an autoregressive integral moving average model to obtain a predicted value; judging an abnormal state by comparing a predicted value with a dynamic threshold value; performing risk assessment by integrating the equipment state parameters, and outputting a corresponding maintenance decision according to an assessment result; according to the invention, the interference of environmental factors on the measurement of the dielectric loss angle tangent value is eliminated, and the measurement accuracy is improved; the abnormal change trend of the dielectric loss value is found in advance through trend prediction, and early warning is realized.
Owner:STATE GRID NINGXIA ELECTRIC POWER CO LTD MARKETING SERVICE CENT STATE GRID NINGXIA ELECTRIC POWER CO LTD METERING CENT

Performance evaluation method of transparent conductive material

The invention provides a performance evaluation method of a transparent conductive material, and belongs to the technical field of performance evaluation. The method comprises the following steps: step 1, acquiring a transparent conductive material sample set to be evaluated, splitting the sample set into a plurality of groups of completely identical samples, and marking a unique first number for each group; 2, configuring a light source tester according to a preset wavelength interval in a standard test environment, and testing the sample to obtain a first relation curve of the transmittance and the wavelength; 3, performing Hall effect test on the sample in a standard test environment to obtain a second relation curve of the conductivity and the magnetic field intensity; 4, controlling variables in the standard test environment to adjust different environmental parameter test samples to obtain a third relation list of the conductivity and the environmental parameters; and 5, according to the first relation curve, the second relation curve and the third relation list of each group of samples, comprehensively obtaining a total performance score of the sample set. Performance of the transparent conductive material is accurately measured, and material design is optimized.
Owner:NAT WHALE TECH (GUANGDONG HENGQIN GUANGDONG & MACAO DEEP COOP ZONE) CO LTD

Circuit board testing method and device based on flying probe tester

The invention provides a circuit board test method and device based on a flying probe tester. According to the method, a test point set is determined by obtaining a design file of a circuit board, establishing an electrical connection model and identifying components and pins on the circuit board. And generating test combination set data by analyzing the conduction relationship between the test points, and further generating test scheme data. And based on the test scheme data, a test path is generated by using a path optimization algorithm, finally, the flying probe tester is used for testing, and a test report is generated according to a test result. The flying probe tester adopts the combination of an annular probe and a sharp needle probe, the annular probe is used for a pin connector to ensure accurate contact, and the sharp needle probe is used for other types of components to improve the test precision and adaptability. Compared with a traditional test method, the test scheme can be generated more efficiently, the test path can be optimized more efficiently, the test time is remarkably shortened, and the reliability and accuracy of circuit board testing are improved.
Owner:SHANGHAI RAILWAY COMM

Thrust Reverser Actuation System Lock Tester

The subject matter of this specification can be embodied in, among other things, method for testing operation of a thrust reverser actuator lock includes determining, by a controller, that an actuator output of a controllable actuator is at a predetermined first position, locking, by the controller, an actuator lock configured to prevent movement of the actuator output of an actuator away from the predetermined first position, initiating, by the controller, actuation of the actuator output away from the predetermined first position, determining, by the controller based on a position feedback sensor, a second position of the actuator output, determining, by the controller, a nominal condition of the actuator lock based on determining that the second position is within a predetermined threshold distance from the predetermined first position of the actuator output, and providing, by the controller and based on the determined nominal condition, a signal indicative of the nominal condition.
Owner:WOODWARD INC