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160 results about "Sensitivity testing" patented technology

Method for determining huff and puff fluid volumes in multi-scale spaces of shale oil reservoirs

Provided is a method for determining huff and puff fluid volumes in multi-scale spaces of shale oil reservoirs, including the following steps: rock sample pretreatment; porosity stress sensitivity testing; high pressure hg injection testing and nuclear magnetic resonance testing benchmarking; online nuclear magnetic resonance testing; data processing and analysis. Firstly, a changing law of multi-scale spaces of shale oil reservoirs with an effective stress is characterized through a pore stress sensitivity measurement and online nuclear magnetic resonance measurement combined experiment, and then the huff and puff fluid volumes of multi-scale spaces of shale oil reservoirs under a condition of a certain stimulated reservoir volume are calculated. A usage amount of a fracturing fluid for a fracturing horizontal well in the shale oil reservoir is determined from the perspective of giving full play to the imbibition replacement role of micro-nano pores.
Owner:SANYA MARINE OIL & GAS RESEARCH INSTITUTE NORTHEAST PETROLEUM UNIVERSITY

Design method of circumferential Lamb wave-like sensor array for detecting gas content of pipeline

The invention discloses a circumferential Lamb wave sensor array design method for detecting the gas content of a pipeline, and the method comprises the steps: determining the arrangement mode of a circumferential Lamb wave sensor array according to an application scene; establishing a sensor unit model, and determining an incident angle of a sensor transmitting signal; sensitivity testing is carried out on various geometrical parameters of the sensor unit, and geometrical parameters which have great influence on various response characteristics are found out; simulating different conditions of the obtained geometric parameters with relatively large influence on each response characteristic, designing and manufacturing a single sensor unit to obtain proper sensor unit parameters, and completing the design of the sensor unit; and carrying out a vibration test on the designed sensor unit, and if the performance of the sensor unit meets the design requirement, completing the design of the circumferential Lamb wave-like sensor array. The method is simple and practical, and the circumferential Lamb wave sensor array designed by the method can effectively excite the circumferential Lamb waves.
Owner:TIANJIN UNIV OF SCI & TECH

Mobile terminal testing device and mobile terminal testing method

A reception sensitivity test control unit 18 provided in a measurement device 1 and configured to execute a reception sensitivity test by repeatedly transmitting and receiving a test signal to a mobile terminal includes a test condition setting unit 18a that initially sets a test condition including an initial step level SL0 and a starting output level OL0 of the test signal at a start of the reception sensitivity test, and an AI prediction test condition change setting unit 18b that sets an AI prediction output level OL01, which is AI-predicted in advance by an AI prediction model based on the test condition set by the test condition setting unit 18a, as a first output level instead of the output level OL0.
Owner:ANRITSU CORP

Method and system for testing performance of magnetic flux leakage detection probe

The invention discloses a method and system for testing the performance of a magnetic flux leakage detection probe, and relates to the related field of magnetic flux leakage nondestructive detection.The method comprises the steps that a magnetic field is generated on the surfaces of a plurality of standard defect simulation samples through an excitation component, magnetic flux leakage signals are excited, the magnetic flux leakage signals are received through a magnetic flux leakage detection probe array, and a probe electric signal set is output after conversion; performing sensitivity feature extraction on the probe electric signal set, and analyzing to obtain a probe sensitivity test result; extracting stability characteristics, and analyzing to obtain a probe stability test result; multi-mode switching reliability feature extraction is carried out, and a probe multi-mode switching reliability test result is obtained through analysis; and integrating test results to obtain a probe performance test result. The technical problems that in an existing magnetic flux leakage detection probe performance test, the accuracy of a test result is difficult to guarantee, and the test efficiency is low are solved, and the technical effects of improving the accuracy and reliability of the test result and improving the test efficiency are achieved.
Owner:NINGXIA SPECIAL EQUIPMENT INSPECTION & TESTING RESEARCH INSTITUTE +1

Transient stability evaluation method for data-driven power system with interpretability

The invention belongs to the technical field of power system safety analysis and control, and particularly relates to a data-driven power system transient stability evaluation method with interpretability, in the aspect of evaluation result interpretation, an SHAP (Shapley additive interpretation) method and an ALE (cumulative local effect) analysis are comprehensively applied, the SHAP method calculates marginal contribution of each feature based on the game theory, and the ALE method calculates the marginal contribution of each feature based on the game theory. And the nonlinear relation between the characteristic value and the model output is quantized. In addition, a local agent model (LIME) is adopted to train an interpretable model in a sample neighborhood to approximate black box model behaviors. In order to ensure the reliability of an explanation result, verification methods such as a characteristic sensitivity test, an anti-fact prevention and control experiment and a migration scene robustness test are adopted, and the credibility of an explanation conclusion is systematically verified in manners of disturbing key characteristics, adjusting operating parameters, constructing different working conditions and the like.
Owner:TAIYUAN UNIVERSITY OF TECHNOLOGY

A magnetic head sensitivity testing device

The present invention relates to the field of magnetic heads, and particularly to a magnetic head sensitivity testing device, which includes a bottom plate. Above the bottom plate, a screw rod and multiple support rods are provided. The screw rod is driven to rotate by a transverse movement motor. Above the bottom plate, a sliding plate is also provided. At a position corresponding to the screw rod on the sliding plate, a threaded tube is fixed. The screw rod extends into the threaded tube and is in threaded connection with the threaded tube. At positions corresponding to the support rods on the sliding plate, support tubes are fixed respectively. The support rods extend into the support tubes and are in sliding connection with the support tubes. On one side of the sliding plate, a lead screw I is provided. The lead screw I is driven to rotate by a motor I. On the lead screw I, a slider in threaded connection with the lead screw I is provided. A plurality of magnetic strips are evenly fixed on the slider. Shielding covers wrapping the magnetic strips are fixed at positions corresponding to the magnetic strips on the slider. The magnetic permeability of each of the shielding covers is different. Through this device, the sensitivity of the magnetic head can be automatically detected.
Owner:全南群英达电子有限公司

Method and device for automatically testing sensitivity of broadband radio frequency system and medium

The invention discloses a method, equipment and medium for automatically testing the sensitivity of a broadband radio frequency system, and relates to the technical field of broadband radio frequency testing, and the method comprises the steps: starting a testing process, and coordinating a plurality of calibration equipment and equipment to be tested in a wireless network in the same testing time slot, synchronously sampling spectrum data of each calibration device through an air interface and processing the spectrum data into a noise distribution parameter set; and dynamically adjusting the output power of the vector signal generator and synchronously monitoring the bit error rate change according to the received power predicted value until the difference value between the bit error rate and a preset target bit error rate threshold value meets a convergence condition, recording the received power value during convergence as a sensitivity test result, and generating a test report. By generating the high-precision dynamic noise map and calculating the compensation transmitting power calibration value, accurate sensing and active compensation of the space noise of the test environment can be realized.
Owner:CHENGDU ANPRI ELECTRONICS CO LTD

Test accessory feeding and assembling mechanism for acupuncture sensitivity testing machine

The test accessory feeding and assembling mechanism for the acupuncture sensitivity testing machine comprises a test accessory feeding and storing sub-mechanism and a test accessory feeding and grabbing sub-mechanism, the test accessory feeding and storing sub-mechanism comprises an XY double-axis moving module, a tray carrying table and a tray, the tray carrying table is slidably connected to the double-axis moving module, and the tray carrying table is slidably connected to the XY double-axis moving module. A tray used for storing test accessories is arranged on the tray carrying table, the XY double-axis moving module is used for driving the tray to move, the test accessory feeding and grabbing sub-mechanism comprises a two-dimensional moving assembly and a grabbing assembly, and the grabbing assembly used for grabbing the test accessories is arranged at one end of the two-dimensional moving assembly. Through cooperative work of the test accessory feeding and storing sub-mechanism and the test accessory feeding and grabbing sub-mechanism, the automatic feeding and assembling process of test accessories such as a fire cap and a firing pin is achieved, the working efficiency is improved, the labor intensity is reduced, and the accuracy and consistency of test operation are guaranteed.
Owner:XIAN JIANYANG ELECTROMECHANICAL EQUIP CO LTD

Hall disc sensitivity test circuit applied to wheel speed sensor and method thereof

The invention discloses a Hall disc sensitivity test circuit applied to a wheel speed sensor and a method thereof, the Hall disc sensitivity test circuit comprises a Hall disc HallR, a Hall disc HallC, a Hall disc HallL, a first signal link, a second signal link, a switch S1, a switch S2, a switch S3, a switch S4, a switch S5, a switch S6 and a switch S7, differential output signals of the Hall disc HallR and the Hall disc HallC are input to the first signal link, and differential output signals of the Hall disc HallL are input to the second signal link. Differential output signals of the Hall disc HallC and the Hall disc HallL are input to the second signal link, two ends of the switches S1, S2 and S3 are respectively connected with differential output signals of the Hall discs HallR, HallC and HallL, and the switches S4, S5, S6 and S7 are connected with detection signals VPR, VNR, VPL and VNL. The improvement cost is low, and the test method is simple.
Owner:上海帝迪集成电路设计有限公司

Multi-frequency sensitivity test evaluation method and system

The invention relates to a multi-frequency sensitivity test evaluation method and system, the evaluation method is realized based on a multi-frequency sensitivity test device, and the device comprises a signal generator, an attenuator, a power amplifier, a directional coupler, a power meter, a frequency spectrograph and an interference applying module. According to the evaluation method, the sensitivity of the electronic product to single-frequency interference and multi-frequency interference in different frequency bands can be determined, modes such as frequency band sub-band division and reverse frequency spectrum monitoring are designed, the influence of multi-frequency-point signal intermodulation interference on a test result can be reduced, and the test accuracy is improved. The problem that the accuracy of a multi-frequency-point sensitivity test result is affected due to the fact that a traditional multi-frequency-point test method generates extra interference risks on the tested electronic product is solved. Meanwhile, under the condition that the multi-frequency sensitivity indication parameter provided by the invention meets a certain condition, a continuous wave sensitivity test method can be adopted to replace a multi-frequency point sensitivity test method, so that the test cost is reduced.
Owner:BEIJING INST OF SPACECRAFT SYST ENG

Device and method for testing impact sensitivity under thermal-mechanical coupling effect

The invention provides an impact sensitivity testing device and method under a thermal-mechanical coupling effect, and relates to the technical field of testing equipment. The test device comprises a temperature control system, an extremely low temperature adjusting module, an impact device, a drop hammer replacement window and a host. The temperature control system is used for setting an experimental temperature to complete tests under different temperature conditions from room temperature to 200 DEG C; the extremely low temperature adjusting module is used for rapidly cooling and controlling the temperature from the room temperature to-40 DEG C; the impact device is used for releasing a drop hammer impact sample for experiment; the drop hammer replacement window is used for safely and conveniently replacing the drop hammer; the host is used for starting impact. The device has the advantages of being accurate in data, high in safety protection level and wide in test temperature range, and impact sensitivity data under the coupling effect of heat and mechanical impact can be obtained. The method can be widely applied to research, production, process optimization, storage, safe use and the like of energetic materials.
Owner:EDISON (BEIJING) TECH CO LTD

Device and method for testing impact sensitivity of energetic material under force-heat-electricity coupling stimulation

The invention discloses an energetic material impact sensitivity testing device and method under force-heat-electricity coupling stimulation, and relates to the field of energetic material safety performance testing. The testing device comprises a sample loading assembly, an impact mechanism, a static electricity generation module, a temperature module and a control module. The explosive loading assembly is used for containing an energetic material sample, the impact mechanism is arranged above the explosive loading assembly and can apply certain impact energy to the sample, and the static electricity generation module is connected with the impact mechanism and can instantaneously apply certain electric energy to the sample through the impact mechanism; the temperature module can regulate and control the temperature of the sample within a certain range, and the control module is used for regulating and controlling the working states of the static electricity generation module, the impact mechanism and the temperature module. The specific steps of the device and method for testing the impact sensitivity of the energetic material under force-heat-electricity coupling stimulation provided by the invention solve the problem of existence of a safety characteristic testing method of the energetic material under force-heat-electricity multi-physical field coupling stimulation.
Owner:ZHONGBEI UNIV

Photon counter sensitivity and stability test system and test method

The present invention provides a photon counter sensitivity and stability test system and test method, which include a shielded dark box, a self-calibration standard light source, a test bench, a photon counter, an electronic system and a computer system. The self-calibration standard light source and the photon counter are placed in a test bench inside the shielded dark box. The test bench is provided with multiple test stations, and multiple groups of photon counters can be tested simultaneously each time. The computer system receives the photon counting measurement value and automatically analyzes the value of the specified time period, and automatically uploads the analysis result to the cloud server. If the result index exceeds the given technical index, an automatic alarm is issued. The electronic system is used to count the photons of the standard photon counter equipped with the self-calibration standard light source, and drive the light source to perform self-calibration according to the deviation between the count value and the standard count value, thereby eliminating the standard output light wave deviation caused by the position change of the light source due to power fluctuation or external factors, and improving the accuracy of the sensitivity test of the photon counter.
Owner:NORTH NIGHT VISION SCI&TECH (NANJING) RES INST CO LTD +1

Servo turntable rotation sensitivity testing device

The utility model discloses a rotation sensitivity testing device for a servo turntable. The rotation sensitivity testing device comprises a workbench for installation, a supporting frame stably installed on the left side of the upper end of the workbench and a controller installed on the right side of the upper end of the workbench. The laser measuring mechanism is arranged on the supporting frame, the laser measuring mechanism comprises a first telescopic rod and a laser interferometer host, and the laser interferometer host is arranged at the lower end of the first telescopic rod; a clamping mechanism is arranged in the testing platform, the clamping mechanism comprises a reference axis body, a connecting rod, a threaded rod and a sliding clamping block, and the reference axis body is arranged in the testing platform. The servo turntable rotation sensitivity testing device is convenient for stably testing the rotation sensitivity of the servo turntable, is convenient for adjusting the mounting distance between the servo turntable and the reference shaft according to the size of the rotation center of the servo turntable, avoids detection errors, and is convenient for stably mounting the servo turntable.
Owner:JIANGXI LINGYUSI MEASUREMENT & CONTROL TECH CO LTD

Amorphous alloy iron core loss and magnetization characteristic stress sensitivity test method

The invention discloses a stress sensitivity test method for amorphous alloy iron core loss and magnetization characteristics, which comprises the following steps: S1, calculating stress distribution in a circular iron core sample, and selecting nine interference magnitude combinations to obtain the sizes of the outer diameter and the inner diameter of the iron core sample; s2, processing the iron-based amorphous alloy strip according to the same process sequence to obtain ten laminated iron core samples; s3, testing the size and quality of each iron core sample; s4, matching and grinding the outer diameters of the nine inner rings and the inner diameters of the nine outer rings with the nine iron core samples, and chamfering; s5, the nine upper pressing rings and the nine lower pressing rings are subjected to precise match grinding; s6, carrying out hot jacket installation on the nine iron core samples; s7, winding a primary winding and a secondary winding on each iron core sample; and S8, carrying out loss and magnetization characteristic test on all the iron core samples by using a soft magnetic material magnetic performance test system. According to the method, data support is provided for improving the accuracy of optimization design and performance analysis of the amorphous alloy high-speed motor.
Owner:NORTH CHINA ELECTRIC POWER UNIV

Method for detecting three pathogenic vibrios of penaeus vannamei

The invention provides a method for detecting three pathogenic vibrios of penaeus vannamei. According to the method, specific primers are designed by using toxR genes of vibrio fluvialis, flaA genes of vibrio anguillarum and pyrH genes of vibrio alginolyticus, and sensitivity test is carried out. The lowest detectable concentrations of the three vibrios are 5.21 * 10 < 2 > cfu / mL, 2.70 * 10 < 4 > cfu / mL and 2.48 * 10 < 2 > cfu / mL, and the sensitivity is high. The three vibrios are accurately and simultaneously identified through a multiple PCR method, and the identification efficiency is improved. Meanwhile, the lowest detection concentrations of the DNA of the three vibrios identified and extracted by using a real-time fluorescent quantitative PCR (qRT-PCR) technology are 1.0 * 10 <-6 > nmol / L, 1.0 * 10 <-7 > nmol / L and 1.0 * 10 <-8 > nmol / L respectively. Compared with the two methods, the common PCR technology has lower requirements on instruments and operation, so that the common PCR technology is more suitable for the diagnosis of the vibrio infection of the penaeus vannamei. The qRT-PCR technology is more suitable for detection cases with higher sensitivity requirements. By using the method, an efficient and reliable means is provided for diagnosing the bacterial diseases of the penaeus vannamei boone.
Owner:YANGTZE UNIVERSITY

PM2.5 sensor testing method and device of range hood and electronic equipment

The invention discloses a PM2.5 sensor testing method and device of an extractor hood and electronic equipment, testing is conducted in a target scene, the target scene comprises the extractor hood and a dust device, and the method comprises the steps that the extractor hood is started, and a first detection result of a PM2.5 sensor of the extractor hood is obtained; testing operation is executed once every target time interval, N times of execution are repeated, N timing durations are obtained, and the testing operation comprises the steps that the dust device is started for a preset duration, so that dust enters the PM2.5 sensor; acquiring a second detection result of the PM2.5 sensor, and starting timing when the second detection result is greater than or equal to the target detection result; a third detection result of the PM2.5 sensor is obtained, timing is stopped when the third detection result is recovered to the first detection result, and the timing duration is obtained; and obtaining a test result of the PM2.5 sensor according to the N timing durations. According to the embodiment of the invention, the dust sensitivity of the extractor hood is tested, and the use performance of the extractor hood is guaranteed.
Owner:FOSHAN JINGWEI TECH CO LTD

A Saber-based inverter simulation method and device

ActiveCN115600379BTime domainSimulation
This application provides a Saber-based inverter simulation method, which includes: generating an initial simulation test circuit; performing time-domain simulation based on the initial simulation test circuit to obtain the total loss, switching loss, and conduction loss of the power device model; transforming the initial simulation test circuit to obtain a replacement simulation test circuit, and performing sensitivity testing on the obtained replacement simulation test circuit based on the total loss, switching loss, and conduction loss of the power device model to obtain the sensitivity of each initial curve; and adjusting the power device design based on the obtained total loss, switching loss, conduction loss of the power device model, and the sensitivity of each original curve. This method can guide the design of power devices and other parameters in the circuit, effectively improving R&D efficiency and quickly achieving the goals of improving inverter efficiency, reducing losses, and meeting system efficiency requirements.
Owner:CHINA FAW CO LTD

Flexible circuit board sensitivity testing device

The utility model relates to the technical field of flexible circuit boards, and discloses a flexible circuit board sensitivity testing device, which comprises a top board assembly, a flexible circuit board, a flexible circuit board, a flexible circuit board, a flexible circuit board, a flexible circuit board, a flexible circuit board and a flexible circuit board connecting piece, and is characterized in that the top board assembly comprises a top board and a positioning and pressing block arranged on the top board; the carrier plate assembly comprises a carrier plate, and the carrier plate is used for bearing and placing a flexible circuit board to be tested; the upper jacking assembly comprises a mounting frame, an upper jacking mechanism, a test module and a loudspeaker device, the test module and the upper jacking mechanism are arranged on the mounting frame, and the loudspeaker device is arranged on the upper jacking mechanism. According to the flexible circuit board sensitivity testing device provided by the utility model, loading, unloading and testing of the to-be-tested flexible circuit board can be flexibly realized, each main part is respectively arranged so that each part can be rapidly replaced and adjusted according to different tested products, and the layout is flexible; in addition, the testing device can meet the operation requirement for testing the sensitivity of the flexible circuit board in a targeted mode, and is simple in structure and low in cost.
Owner:OAT (HANGZHOU) INTELLIGENT MFG CO LTD

Polarization-sensitive test and parameter optimization method for liquid crystal focusing lens without polarizer

This invention relates to the field of performance optimization technology, specifically to a method for polarization sensitivity testing and parameter optimization of a non-polarized liquid crystal focusing lens. The method includes the following steps: collecting test information to establish a basic driving condition set; collecting light field interference fringe images to generate a phase delay matrix set; subtracting the elements of the phase matrix to obtain a deformation stress distribution matrix; determining the numerical magnitude relationship to obtain a stress over-limit judgment and characterization set; and adjusting the voltage specifications to generate a set of independent dual-layer adjustment commands. In this invention, basic driving conditions are established by extracting allowable stress and interlayer elastic parameters; the light intensity distribution is analyzed and the phase state is compared to extract deformation; global characterization scalars are calculated to determine over-limit actions; pulse width voltage is readjusted to issue commands; and based on full-aperture interferometry and dual-layer differential comparison, interlayer coupling stress is quantified and perceived, constructing a dynamic adjustment closed loop for polarization response fluctuations and rotational deviations.
Owner:南通诺瞳奕目医疗科技有限公司 +1

An electromagnetic most sensitive waveform testing method based on reinforcement learning

The present invention discloses a method for testing the most sensitive electromagnetic waveform based on reinforcement learning, which includes the following steps: S1. Establish a reinforcement learning architecture for electromagnetic sensitivity testing, and construct a state space and an action space; S2. Establish a reinforcement learning model based on the dual-delay deep deterministic policy gradient network; S3. Build an automated closed-loop test environment for sensitivity thresholds; S4. Construct an electromagnetic sensitivity reward function, and design a basic reward function and a shaping reward function; S5. Start the test of the most sensitive electromagnetic waveform and reinforcement learning training to obtain the most sensitive waveform. The present invention can quickly search for the most sensitive waveform that minimizes the sensitivity threshold of the test item in the defined modulation waveform set.
Owner:BEIHANG UNIV

A system and method for sensitivity testing of milligram to sub-milligram quantities of energetic materials

The application discloses a kind of milligram level to sub-milligram level energetic material sensitivity test system and method, belong to material testing field.For the problem of large consumption of existing energetic material test sample and high error rate of result, the application provides a kind of milligram level to sub-milligram level energetic material sensitivity test system, including the pressure loading module of dynamic pressure applied to energetic sample, at least two different wavelengths of light are collected, and the common optical path module of different functional components in functional component module is separated to different wavelengths of light path, the functional component module of in-situ observation structure evolution and reaction phenomenon of energetic sample under pressure loading;Ensure the time synchronization of pressure loading module, common optical path module and functional component module when working Synchronous control module.The application realizes the precision measurement of milligram level to sub-milligram level energetic material sensitivity, and the test result is objective and has high repeatability, which provides a powerful means for rapid and safe evaluation and initiation mechanism research of new energetic material.
Owner:SHANGHAI PROSPECTIVE INST OF PHYSICAL SCI

A radio station sensitivity test auxiliary device and a method of using the same

The application provides a radio station sensitivity test auxiliary device and a use method thereof. The auxiliary device comprises a first access unit, a second access unit, a control unit, a mixing unit, a local oscillator unit, a first switch unit and a second switch unit. Two kinds of communication modes are included between the first switch unit and the second switch unit. The first communication mode is to directly connect the first switch unit and the second switch unit, and the second communication mode is to connect the first switch unit and the second switch unit through the mixing unit. The control unit is connected with the first switch unit, the second switch unit, the first access unit, the second access unit and the local oscillator unit, and is used for switching the communication mode of the first switch unit and the second switch unit to realize the switching of the test mode, setting the attenuation values of the first access unit and the second access unit and setting the frequency value of the local oscillator signal. The radio station sensitivity test auxiliary device is used for radio station sensitivity test, and four kinds of test modes are included.
Owner:10TH RES INST OF CETC

Lithium Battery Thermal Runaway Fire Detection and Fire Sensitivity Testing Method and System

The present invention discloses a method and system for detecting lithium battery thermal runaway fire and testing the fire sensitivity. The method includes: if a test start message is received, a start instruction is sent to a generating device to generate a fire environment, the test environment monitoring data collected by a data acquisition device is obtained and sent to a display device for display, and it is determined whether the test environment monitoring data matches preset detection conditions; if it matches, the detection result of the device under test is obtained. The above method can comprehensively detect the test environment monitoring data including temperature monitoring data, carbon monoxide concentration monitoring data, carbon dioxide concentration monitoring data, hydrogen concentration monitoring data, smoke concentration monitoring data and ion concentration monitoring data and determine whether it matches the detection conditions, so that the device under test is in a set environment, and the device under test is accurately and comprehensively tested by simulating the real field environment, improving the efficiency of testing the fire detection sensitivity of the device under test.
Owner:深圳泽保智能科技有限公司

Sensitivity testing machine of constant-temperature shower

The utility model discloses a sensitivity testing machine for a constant-temperature shower, and relates to the technical field of shower testing. The sensitivity testing machine of the constant-temperature shower comprises a testing machine table and a constant-temperature faucet body, an installation frame is fixed to the rear side of the top of the testing machine table, a water inlet pipe is embedded in the installation frame and communicated with a water inlet of the constant-temperature faucet body, a supporting shaft is rotationally arranged on the installation frame, a supporting plate is fixed to the front end of the supporting shaft, and a transparent measuring cup is arranged on the supporting plate. A reciprocating screw rod is arranged on the upper side of the testing machine table, a movable block is arranged on the reciprocating screw rod in a threaded mode, a connecting rod is fixed to the front end of the movable block, an induction plate is fixed to the upper end of the connecting rod, and a turnover mechanism is arranged between the movable block and the supporting shaft. And in combination with the turnover mechanism, the purpose of continuously testing the sensitivity of the constant-temperature faucet body is achieved.
Owner:ANHUI INST OF PROD QUALITY SUPERVISION & INSPECTION

A magnetic head sensitivity test

The present application relates to the technical field of magnetic head production, and particularly relates to a magnetic head sensitivity test device, which comprises a table top, a lead screw and a supporting rod arranged above the table top, the lead screw is driven to rotate by a conveying motor, a sliding table is further arranged above the table top, a plurality of threaded pipes are fixed on the sliding table, the lead screw passes through the threaded pipes and is threadedly connected with the threaded pipes, a supporting pipe is further fixed on the sliding table, the supporting rod passes through the supporting pipe and is slidably connected with the supporting pipe, a plurality of placing grooves are further arranged on the sliding table, a plurality of jacks are uniformly arranged in the placing grooves, a fixing seat is further fixed on the bottom of one side of the sliding table, a conductive needle electrically connected with the jacks is arranged on the fixing seat, a plurality of test air cylinders are further fixed on the table top, a fixing plate is further arranged on one side of the table top, the piston rods of the test air cylinders are all fixed with the fixing plate, and a positioning plate is further arranged on one side of the fixing plate. The device can realize automatic sensitivity test of the magnetic head.
Owner:CHONNAM YINGCHUANG ELECTRONICS CO LTD

Method for simultaneous calibration and sensitivity test of multi-channel safety light curtain

ActiveCN121299804BTime domainLight beam
The present application relates to the technical field of safety light curtain calibration test, and specifically relates to a multi-channel safety light curtain synchronous calibration and sensitivity test method, which comprises the following steps: setting up a multi-channel safety light curtain, modulating a test signal and emitting an infrared light beam from a light emitter of each channel of the multi-channel safety light curtain, and obtaining a response signal of a light receiver of each channel; regarding an arbitrary channel as a target channel, performing time domain and frequency domain analysis on the test signal and the response signal, extracting a response delay parameter and a signal attenuation degree of the target channel, and then obtaining a time-frequency coefficient of the target channel in combination with the response delay parameter and the signal attenuation degree; obtaining running scene information of the multi-channel safety light curtain, obtaining a sensitivity threshold of the target channel through the time-frequency coefficient and the running scene information, and performing sensitivity calibration on the multi-channel safety light curtain based on the sensitivity threshold. The present application improves the calibration efficiency and test precision of the multi-channel safety light curtain.
Owner:SHANDONG LAIEN OPTIC ELECTRONICS TECH

A method for sensitivity evaluation of microseismic monitoring systems

This invention relates to the field of sensitivity testing technology, and more particularly to a method for evaluating the sensitivity of a microseismic monitoring system. This method, based on the magnitude and source location of microseismic events over a period of time, can realistically reflect the network monitoring capability under current mine engineering structural conditions and the health status of the microseismic monitoring system. It uses the geometric parameter of the distance from the microseismic event to the sensor involved in locating the event to group and refine the sensitivity of each interval to obtain the maximum goodness of fit. The sensitivity of any point within the monitoring range is determined by the distance to the fourth nearest sensor. Finally, a network sensitivity cloud map can be obtained through interpolation. This method is used to evaluate the sensitivity of the microseismic monitoring system under current mine engineering structural conditions and the health status of the microseismic monitoring system, providing a basis for the current performance evaluation and subsequent optimization and expansion of the system.
Owner:JIANGXI COPPER +1

Touch performance analysis method and system suitable for touch display glass

The invention belongs to the technical field of touch performance analysis, and provides a touch performance analysis method and system suitable for touch display glass, and the method comprises the steps: carrying out the grid form division of the touch display glass according to the same area, and obtaining a plurality of touch test regions, the method comprises the following steps: performing multiple touch performance tests on touch display glass on a touch test area, evaluating a mistaken touch risk of the touch test area, and identifying an area with a high mistaken touch risk and an area with a low mistaken touch risk in the touch test area; by performing multiple sensitivity tests on the area with the low mistaken touch risk, evaluating the touch sensitivity in the area with the low mistaken touch risk and identifying the area with the low sensitivity in the area with the low mistaken touch risk, the problem areas are classified according to the similarity between the sensitivity deviation and the mistaken touch rate deviation, the touch pressure intervals are adjusted according to different clusters, and the accuracy of the mistaken touch risk is improved. And an optimal pressure value for balancing the two pressure values is searched through compatibility analysis.
Owner:NANYANG FUTECH OPTOELECTRONICS TECH CO LTD