211 results about "Sensitivity testing" patented technology

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.

The invention relates to the technical field of hydrogen embrittlement resistance sensitivity testing devices, in particular to a hydrogen embrittlement resistance sensitivity testing device based on a gas inhibitor, which comprises a gas configuration mechanism, the gas outlet end of the gas configuration mechanism is connected with the first gas inlet end of a buffer tank through a first pipeline; the gas outlet end of the buffer tank is connected with the gas inlet end of the reaction kettle through a second pipeline; the gas outlet end of the reaction kettle is connected with the waste gas recycling mechanism through a third pipeline; the gas configuration mechanism comprises a workbench, multiple rows of first gas conveying pipes are arranged on the upper portion of the workbench, the head ends of the multiple rows of first gas conveying pipes are connected with a plurality of gas storage bottles respectively, and the tail ends of the multiple rows of first gas conveying pipes are connected with a first pipeline. According to the invention, by changing the composition and proportion of the inhibition gas and changing the pressure and temperature in the reaction kettle, the visual test research on the hydrogen embrittlement resistance sensitivity of samples with different shapes and sizes in different inhibition gas environments can be realized.

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.

The invention relates to the technical field of sensitivity testing devices, in particular to a 5G communication module signal sensitivity testing device and a using method thereof.The 5G communication module signal sensitivity testing device comprises a display controller and a machine table assembly, one side of the display controller is fixedly connected with the machine table assembly, one end of the machine table assembly is fixedly connected with a position adjusting assembly, and the inner side of the position adjusting assembly is slidably connected with a clamping assembly; one side of the upper end of the machine table assembly is fixedly connected with a spacing adjusting assembly, the spacing adjusting assembly is provided with a detection assembly, the position adjusting assembly comprises a disc block, a rectangular groove is formed in the inner side of the disc block, the inner side of the rectangular groove formed in the disc block is fixedly connected with a first electromagnet, and the inner side of the rectangular groove formed in the disc block is fixedly connected with a guide rod; according to the 5G communication module testing device, the probe array can be flexibly adjusted according to the pin layout of a module circuit board, the 5G communication module testing device can adapt to 5G communication modules of different models and sizes, and the testing accuracy and effectiveness are ensured.

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.

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.

A sensitivity testing apparatus and method for fiber-optic distributed temperature sensing in a drainage pipeline. A temperature-adjustable pipeline water supply tank (1) is provided with heating rods (11) and a water temperature sensor (12), which are electrically connected to a flow and water temperature control PLC system (4); the temperature-adjustable pipeline water supply tank (1) is connected to a water input end of a water pump (2), a water output end of the water pump (2) is in communication with a water input end of an experimental pipeline (3), and a water output end of the experimental pipeline (3) is in communication with the temperature-adjustable pipeline water supply tank (1); an inflow and infiltration water storage tank (61) of an external inflow and infiltration simulation system (6) injects a liquid into the experimental pipeline (3) by means of a water tank connection pipe (62) and a shunt pipe (63), so as to simulate an inflow and infiltration scenario in an operating state of the drainage pipeline; experimental pipeline water temperature sensors (31) perform spot-like temperature collection on the experimental pipeline (3); and a fiber-optic temperature sensing apparatus (5) performs linear temperature collection along the interior of the experimental pipeline (3), so as to detect and calibrate fiber-optic temperature sensing data, identify noise of a fiber-optic device in the drainage pipeline, and determine the detection sensitivity of the fiber-optic device.

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.

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.

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.

The invention discloses a dynamic pricing method and device for providing auxiliary service adjustment by multiple subjects, and relates to the technical field of dynamic pricing, and the method comprises the following steps: obtaining historical data of all units in a power market, and carrying out the preprocessing of the historical data to obtain first data; constructing an auxiliary service adjustment dynamic pricing mechanism model based on a system dynamics theory in combination with the first data; judging whether adjustment is needed or not according to the operation condition of the model, and if adjustment is not needed, performing dynamic pricing calculation; if adjustment is needed, influence parameters are obtained based on sensitivity test analysis, coefficients on an influence parameter link are preferentially adjusted, and a logic relation is reconstructed to carry out feedback correction on the model; and calculating according to the corrected model to obtain a correlation adjustment reasonable cost reference value. And dynamic adjustment of the auxiliary service price is realized through the established causal relationship graph and the like. Through real-time data acquisition and updating, the model can dynamically calculate the pricing of the auxiliary service according to the constructed flow graph, and a scientific basis is provided for pricing.

The invention discloses a seepage low-vibration-frequency stress sensitivity testing device and a use method, and belongs to the field of unconventional natural gas exploitation, the seepage low-vibration-frequency stress sensitivity testing device comprises a gas supply system, a stress loading system, a low-vibration-frequency system and a data acquisition system, and the method comprises the steps of test piece placement, stress loading system starting, vacuum degassing, gas adsorption, vibration application and permeability measurement. A stress sensitivity test experiment is carried out on a test piece through the device platform and the method, the gas seepage condition of a low-frequency mechanical vibration coal body stress-seepage coupling field is analyzed through a system, the change rule of the coal body permeability influenced by low-frequency mechanical vibration is obtained, and the stress sensitivity rule is obtained according to related technical indexes and parameters. The influence of the low-frequency mechanical vibration effect and the gas seepage on outburst is discussed, so that outburst prevention measures are better implemented, and economic benefits are brought to mine safety production.

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.

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.

The invention provides a method for designing an ultrasonic guided wave transducer for active corrosion prevention of a metal pipeline surface, which comprises the following steps of: S1, determining the modal and the frequency of ultrasonic guided waves needing to be excited by utilizing finite element numerical simulation, and calculating a frequency dispersion curve of the ultrasonic guided waves propagating in a pipeline by utilizing a semi-analytical finite element method, a specific mode needing to be excited is found through the frequency dispersion curve; s2, establishing an ultrasonic guided-wave transducer model, and performing sensitivity test on parameters of the Morris trajectory model to obtain structural parameters having great influence on the characteristics of the ultrasonic guided-wave transducer; and S3, simulating different conditions of the structural parameters with relatively large influence, and designing and manufacturing the transducer to obtain proper transducer parameters. Compared with an existing design method, the design method is simpler and more efficient, and the design of transducer structures applied to pipelines of different materials and sizes can be guided.

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.

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.

The present invention relates to the technical field of touch screens, and discloses a comprehensive testing device and a testing method for touch screen production, comprising a mounting frame, connecting rods are respectively mounted on the mounting frame through bearings, one end of the connecting rod is connected to a test box, a box door is arranged on one side outer wall of the test box, and the box door is buckled with the test box through a latch, a flip assembly is mounted on one side outer wall of the mounting frame, and the output end of the flip assembly is connected to the connecting rod, and fixing plates are respectively mounted on the bottom inner wall of the test box, and the mounting frame, the test box, the flip assembly, the pressure test assembly, the mounting plate, the touch test assembly and the sensitivity test assembly are arranged, so that the testing function of the device is diversified, and multiple detection indicators can be tested at one time, so that during the test, it is not necessary to manually transfer multiple times to fully detect the touch screen, thereby reducing the consumption of manpower and time and improving the testing efficiency.

The present invention proposes a digital fluorescent magnetic particle detection method for welding joints. The sensitivity of the digital fluorescent magnetic particle detection device is verified by using a lifting force test and a sensitivity test. The digital fluorescent magnetic particle detection device is placed on the surface to be detected so that it is adsorbed on the surface to be detected. The electromagnetic yoke is energized for cross-magnetization and magnetic suspension is sprayed so that the surface to be detected is covered with magnetic lines of force while the fluorescent magnetic particles are adsorbed on the surface of the weld to be detected or near-surface defects. A black light is used for irradiation to generate defect images, and a high-definition camera is used to shoot and store the defect images, thereby achieving effective detection of surface defects of the weld. Automatic crawling, magnetization, spraying of magnetic suspension and image acquisition methods are used to avoid deviations in detection results during manual detection. The camera records and stores the detection parts in a way that makes the detection results traceable, thereby achieving permanent preservation of the detection results. It is suitable for use as a digital fluorescent magnetic particle detection method for welding joints.

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.

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.

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.

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.

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.

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.

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.

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.

The utility model discloses a temperature-controllable metal sample hydrogen embrittlement sensitivity testing device which is provided with a constant-temperature water bath kettle, and an equal-height cushion block is matched in the constant-temperature water bath kettle to ensure that an electrolytic bath is horizontally placed. An anode platinum sheet and a hydrogen content test sample are in lap joint in an electrolytic bath, a tensile sample is assembled, different electrolytes are selectively injected according to different metal materials, an electrochemical workstation and a universal tensile testing machine are externally connected, and the hydrogen content test sample and the tensile sample are compared through the numerical value of the hydrogen content test sample and the numerical value of the tensile sample. The parameter indexes of a stress-strain curve, the yield strength, the tensile strength, the elongation and the reduction of area can be obtained, the loss amount of the elongation and the loss amount of the reduction of area in the hydrogen environment are compared, and finally the compatibility parameters of the metal material or the welded joint and hydrogen can be obtained under the determined hydrogen content. According to the utility model, the hydrogen charging amount can be determined without secondary processing, slow strain rate stretching is carried out, and the compatibility between a metal material or a welding joint and hydrogen can be conveniently and quickly analyzed and evaluated by matching with the temperature change.

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.

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.