23results about How to "Short test time" patented technology

The application discloses a method for determining the content of chromium in a mixture of iron and chromium, and comprises the following steps: S1, oxidizing the divalent iron ions in the mixture of iron and chromium into trivalent iron ions under an acidic condition; S2, adding sodium hydroxide solution and hydrogen peroxide under stirring, so that the trivalent iron ions form iron hydroxide precipitate, and the trivalent chromium ions are oxidized into hexavalent chromium ions; S3, adding an acidic solution, so that the iron hydroxide precipitate is dissolved, and the wrapped trivalent chromium ions are released; adding sodium hydroxide solution and hydrogen peroxide under stirring, so that the trivalent iron ions form iron hydroxide precipitate, and the released trivalent chromium ions are oxidized into hexavalent chromium ions; S4, repeating the step S3 X times; X is an integer greater than 0; and S5, determining the content of chromium in the mixture. The method for determining the content of chromium in the mixture of iron and chromium has the advantages of accurate measurement, high precision, simple operation and improved efficiency of the determination of the content of chromium.

This invention discloses a method for evaluating the storage lifetime of a missile-borne fiber optic inertial navigation system, comprising: determining the acceleration temperature value T of the test. k The acceleration temperature value T was obtained. k Under these conditions, the acceleration coefficient A of the fiber optic inertial navigation system F According to the acceleration coefficient A of the fiber optic inertial navigation system F Storage time t required for fiber optic inertial navigation systems 贮存时间 The acceleration temperature value T was obtained. k Under these conditions, the time t required to conduct accelerated testing 加速时间 According to t 加速时间 Determine several sampling times; at the accelerating temperature value T k Under certain conditions, accelerated testing was conducted on the fiber optic inertial navigation system (INS), and degradation-sensitive parameters of the INS were acquired at each sampling time. A relationship between these degradation-sensitive parameters and time was constructed. Based on the relationship between these parameters and time under storage temperature conditions, and the out-of-tolerance criterion for the degradation-sensitive parameters, the storage lifetime of the INS under storage temperature conditions was obtained. This invention achieves the assessment of the storage lifetime of fiber optic INS, with advantages such as short testing time, scientific evaluation method, and reasonable evaluation results.

The utility model belongs to high temperature friction coefficient test technical field especially for a kind of low-speed high-temperature environment with lubricating material friction coefficient testing device, including casing, bottom plate and base, casing is set in bottom plate upper portion, base is set in bottom plate lower portion;The top surface of bottom plate is respectively provided with horizontal key and vertical key, and force measurement driving assembly is also provided on the bottom surface of bottom plate;Supporting seat is provided on the mounting hole corresponding to horizontal key;The rear end of supporting seat is provided with motor base, and coupling is provided in the middle part of motor base;The end of coupling is connected with servo motor;The front end of supporting seat is provided with bearing, and supporting shaft is provided in the lower part of bearing;The front end of supporting shaft is also provided with test shaft;The front end of test shaft is provided with test assembly.The utility model can realize the standardization measurement of finished lubricating material sliding friction coefficient under low-speed high-temperature environment, solve the problem that traditional method cannot quantize test data.

The application relates to a method and system for testing a DC supporting capacitor, comprising: applying a DC voltage and superimposing a rated power frequency ripple voltage to a DC supporting capacitor sample at a first preset temperature, continuing for a first preset interval to complete a first stage test; adjusting the temperature and the applied DC voltage until the capacitor value loss is greater than or equal to a preset capacitor value loss or until the capacitor average hourly decline value is less than a preset threshold after a preset withstand voltage time interval under the test conditions of a preset stop temperature and a preset stop voltage, and the second stage test is completed; modifying the applied DC voltage and superimposing the rated power frequency ripple voltage at the first preset temperature, continuing for a second preset interval to complete a third stage test; if the capacitor sample does not appear self-healing failure, does not appear shell burst and / or appears pressure switch action, performing a voltage test; if no breakdown and flashover occur, it is determined that the test is passed.

The application belongs to the technical field of gyroscopes, and discloses a gyroscope position calibration method and system, the method comprising: applying angular velocity excitation to the gyroscope, obtaining the theoretical rotation angle of the gyroscope at a plurality of sampling positions in a rotation period; recording the arrival time of the gyroscope rotating to each sampling position; determining the actual rotation angle at each sampling position according to the angular velocity excitation, the preset initial error term of the gyroscope and the arrival time at each sampling position; constructing the cost function of the error term based on the actual rotation angle and the theoretical rotation angle at each sampling position; and solving the cost function of the error term based on an optimization algorithm to calibrate the preset initial error term and obtain the calibrated error term. The application solves the constructed cost function of the error term by using the optimization algorithm, calibrates the preset initial error term, and has high calibration accuracy, low test time consumption and high calibration efficiency.

The low-temperature environment coil device field detection method belongs to the technical field of power equipment state monitoring and fault diagnosis, and solves the problems of invalidation of traditional detection methods, high misjudgment rate and difficulty of stable work of field instruments caused by nonlinear change of material characteristics of coil devices under extremely low temperature conditions. The low-temperature environment coil device field detection method comprises the following steps: under the environment temperature ℃, a wide-frequency pulse excitation is input to the coil device, and the instantaneous voltage, the instantaneous current and the surface temperature of the coil are synchronously collected; according to the collected data, the thermal disturbance energy quantum and the low-temperature self-healing impedance are calculated, the two characteristics are fused to generate the temperature health degree fingerprint dimensionless characteristic, and the temperature health degree fingerprint dimensionless characteristic is compared with the upper and lower thresholds of the low-temperature golden interval of the same type of device to determine whether the coil device has the turn-to-turn short circuit or the abnormal high thermal resistance fault of the joint.

The application belongs to the technical field of valve testing, and specifically provides a valve testing device, which comprises a detection table, one side of the detection table is provided with a pre-detection feeding mechanism, the side of the detection table away from the pre-detection feeding mechanism is provided with a screwing mechanism, the front side of the detection table is connected with a discharging table, the rear side of the detection table is provided with an insertion type detection assembly, and the insertion type detection assembly is provided with a discharging mechanism; the valve testing device can automatically adjust valve clamping and testing parameters according to the specific size of the valve; in addition, the application of a visual perception system is combined, a pre-action principle is adopted, the valve body is automatically clamped and tested during valve testing, and unqualified products are automatically marked, so that manual intervention is not needed, the testing time is short, and the degree of automation is high.

The utility model discloses a device for testing the assembling pressure of a lead storage battery, which comprises a front cover, a rear cover and at least one group of middle baffle plates arranged between the front cover and the rear cover, each middle baffle plate is provided with a through mounting port, a pole group is arranged between the front cover and the rear cover and penetrates through the mounting port, and the pole group is arranged in the mounting port. The top of the front cover and the top of the rear cover are respectively provided with a through hole for insertion of a terminal, the front cover and the rear cover are close to each other through gradual tightening of the locking piece, and assembly pressure applied to a pole group clamped between the front cover and the rear cover is increased accordingly. The pressure can be transmitted to the detection surface of the piezoelectric ceramic pressure sensor, the piezoelectric ceramic pressure sensor detects the assembling pressure borne by the pole group, meanwhile, the assembling pressure of the pole group can be controlled according to requirements, performance testing of a plurality of pole groups can be carried out at a time, and the testing device is short in testing time, convenient to operate and high in repeatability.

This invention relates to a blank board testing system and method for Mini LED substrates, used for conducting continuity tests on the Mini LED substrate circuitry before chip packaging. The blank board testing system includes a Mini LED substrate, a blank board testing module, and a result display unit. This invention employs a method where the control unit for controlling the test path and the Mini LED substrate circuitry under test are contactably connected to any corner pad in a matrix of pads via a substrate connector to perform continuity testing. A single, simple operation allows for one-click testing of an entire substrate, resulting in short testing time and high efficiency. Furthermore, this connection control method is adaptable to all products using fully connected matrix pads, saving on personnel training costs and fixture development costs. In addition, this invention uses a storage and analysis unit to record the continuity test results of multiple Mini LED substrate circuits for overall analysis and visualization, facilitating timely detection and improvement of process defects and saving unnecessary costs.

The utility model relates to a high-efficiency interchangeable vacuum silicon tube performance testing device, and belongs to the technical field of vacuum testing. Comprising a vacuum cavity, the vacuum cavity is provided with a quick-insertion test connecting pipe unit, a vacuum silicon pipe is inserted into the quick-insertion test connecting pipe unit, two ends of the vacuum cavity are respectively connected with a flange joint, one flange joint is connected with a vacuumizing unit through a metal hose, and the other flange joint is connected with a vacuum detection device. The vacuumizing unit vacuumizes the vacuum cavity, and the performance of the vacuum silicon tube is quickly evaluated by comparing a numerical value on the vacuum detection device with the vacuum degree marked on the vacuum silicon tube. The quick-plug test connecting pipe unit comprises two quick-plug test connecting pipes which are symmetrically arranged, and sealing rings are arranged at the joints of the quick-plug test connecting pipes and the vacuum cavity. The device is convenient to disassemble and assemble, short in testing time, capable of improving the testing efficiency and precision and suitable for rapid batch testing of the vacuum silicon tubes in the high-vacuum heat insulation container.

The application discloses an optical receiving end bandwidth test method, system and related equipment, which first performs coarse scanning by a first sweep frequency step and divides the amplitude-frequency response area, then determines a smaller second sweep frequency step according to the transition core area attenuation slope, adopts differential sampling in different areas, effectively reduces frequency point redundancy, shortens test time consumption, accurately captures the amplitude-frequency rapid attenuation characteristics, balances test efficiency and accuracy, and adapts to production line batch test requirements. By combining real-time signal-to-noise ratio adjustment sampling time and Fourier transform average number, the influence of various interference factors can be inhibited; by peak detection, roll-off characteristic determination, matching of a suitable low-pass model for global fitting, random sampling errors can be eliminated, the standard amplitude-frequency response curve can be fitted to the actual characteristics, and the stability and repeatability of bandwidth determination are improved. The method realizes accurate, efficient and stable test of the optical receiving end bandwidth through the organic combination of adaptive non-uniform sweep frequency and model fitting, and improves the test performance.

The invention relates to an acute altitude sickness prediction system and method, and the system comprises an obtaining module which is used for obtaining the current step test physiological data of a to-be-predicted user; the prediction module is used for inputting the test physiological data of the current step into the acute altitude sickness prediction model to obtain a category label of the to-be-predicted user and / or a plateau Lewis lake scoring interval probability value; and the generation module is used for generating an acute altitude sickness prediction result of the to-be-predicted user according to the category label and / or the plateau Lewis lake scoring interval probability value. Therefore, the method solves the problems of dependence on professional equipment, high cost, long training period, complex evaluation process, high requirement on operation speciality and difficulty in large-scale popularization when related technologies are used for predicting the acute altitude sickness, utilizes the steps of the plain region to test physiological parameters, quickly, noninvasively and simply evaluates the tolerance of the acute altitude sickness, and has a good application prospect. The probability and severity level of acute altitude sickness after the individual enters the plateau are predicted, and the method is not limited by time and places.

The present application provides a kind of explosion shock wave and fragment injury system, comprising: system pipeline, connect each gas chamber;Air source device, including air compressor and high-pressure gas tank, air compressor and high-pressure gas tank are communicated by system pipeline;Firing device, can launch shock wave and several number of fragments;Protective device, for protection, test data and recovery projectile, protective device is connected with transmission device, can return part of shock wave received by protective device to firing device;And electrical control system, with air source device, firing device and protective device electric connection, for controlling the inflation of each gas space and the launch time and sequence of firing device.Can control shock wave and fragment to reach organism sequence and the number of fragment hitting organism, greatly improve the repeatability and precision of test, and make inflation valve open automatically after shock wave shooting, save shock wave gas chamber inflation time.

The invention provides a game prize pool expectation regression testing method and device, electronic equipment and a storage medium, and relates to the technical field of regression testing. The method comprises the following steps: receiving a Taiyte-level production data flow of a game prize pool, and labeling according to a business risk level, an access frequency and a historical defect rate in a partitioned manner; based on a preset four-dimensional weight formula, calculating a sampling weight of each partition data stream, and performing differential sampling by using a dynamic sampling probe; the KL divergence of the current weight distribution and the target weight distribution is calculated by taking a preset time window as a unit, and if the KL divergence exceeds an alarm threshold value, a weight drift root cause is positioned through LIME sensitive path analysis and call chain tracking; calculating a weight deviation compensation value through a PID (Proportion Integration Differentiation) controller, and adjusting the sampling weight in real time; long-tail scene coverage is enhanced based on a GAN model and a traffic playback amplification technology; and carrying out KS test and quantile anchoring on the test data to verify the weight distribution consistency. A long-tail scene is fully covered, and a verification-drift-correction closed loop is realized.

The present application belongs to the technical field of lithium battery, especially to a method for testing electronic conductivity of solid electrolyte. The steps of the present application are as follows: S1, preparing solid electrolyte sheet: taking solid battery material and placing it in a mold, then pressurizing and pressure maintaining the mold, obtaining the solid electrolyte sheet and measuring its thickness and bottom diameter; S2, conductivity test: pretreating the solid electrolyte sheet, then using a constant potential instrument to measure the direct current polarization of the solid electrolyte sheet under step voltage of 0.1 V, 0.2 V, 0.3 V, 0.4 V and 0.5 V, respectively, to obtain current data under constant voltage polarization; S3, data processing: drawing the direct current polarization curve and the equilibrium current response curve under step voltage by using the obtained current data, and calculating the electronic conductivity of the solid electrolyte sheet. The method of the present application is simple in testing, short in testing time and reliable in data.

The present disclosure provides a memory capacitor stability test method, device and equipment. In the method, the test device writes logic levels into all capacitors of the memory to be tested, and reads the logic levels from all capacitors of the memory. The steps of writing and reading are repeated to obtain multiple groups of logic levels written into the capacitors of the memory and logic levels read out, and transmit to the computer equipment. The computer equipment determines the number of failed capacitors in the memory in each test according to the multiple groups of logic levels written into the capacitors of the memory and the logic levels read out, and finally determines the stability of the memory capacitor according to the change of the multiple groups of capacitor failure numbers. Through the comparison of the written and read levels, the capacitor test can be realized in the circuit test stage without waiting for a long time, the stability of the capacitor is quickly verified, the test process is simple and the test time is short, and the test efficiency of the memory capacitor is effectively improved.

The invention provides an EL and I-V integrated acquisition system and method and a defect detection system and method, which can be applied to the technical field of photovoltaic power generation. The acquisition system comprises an EL imaging device, an I-V acquisition device, a bidirectional program control direct current power supply module and a synchronous control module. The bidirectional program-controlled direct-current power supply module is configured to serve as a power supply to provide original current for the synchronous control module in an EL mode and serve as an electronic load to obtain current output by the object to be detected in an I-V mode; the synchronous control module is configured to output a controlled modulation excitation signal to a to-be-detected object in an EL mode and control the EL imaging device to work so as to obtain an EL image; and the control device is configured to control the I-V acquisition device to work in the I-V mode so as to acquire the I-V data of the to-be-tested object. According to the invention, the EL-I-V integrated efficient detection of the photovoltaic module can be realized in the daytime environment, and the accuracy and timeliness of defect detection are greatly improved.

This invention discloses a PEMS testing method for a water sprinkler truck's auxiliary engine, belonging to the field of PEMS testing technology. It includes a gas analyzer and an exhaust flow meter installed on the left side of the gas analyzer. An exhaust pipe interface is located at the rear end of the exhaust flow meter and is used to connect to the water sprinkler truck's exhaust pipe. The test conditions of this invention represent the common operating conditions of water sprinkler trucks and can represent the engine's emission characteristics under actual operation. The test conditions have strong repeatability and short testing time, which is beneficial for product testing and development. By incorporating a solar panel and an inverter, the PEMS testing device can absorb solar energy through the solar panel during use, convert it into electrical energy, and then transmit it to the inverter. The inverter converts the direct current to alternating current, which is then transmitted to the battery for the device's use, thereby increasing the overall driving range.

This application provides a TVS test board, a test method, and a readable storage medium. The TVS test board includes a control module, a voltage amplification module, a first scaling module, a second scaling module, a voltage divider module, a switching module, and M on / off units. Different on / off units among the M on / off units are used to connect different TVS diodes of the interface of the product under test (DUT), and the on / off units are used to control the connection and disconnection between the TVS diodes and the switching module. This TVS test board can simultaneously connect multiple DUT interfaces. Each DUT interface has multiple TVS diodes, and the TVS diodes of different DUT interfaces have different specifications. Even for the same DUT interface, there are multiple specifications of TVS diodes. The TVS board completes batch testing by sequentially testing each TVS diode of at least one DUT interface. The testing time is short, and there is no need to use a multimeter or oscilloscope. The process is simple, improving testing efficiency while reducing testing costs.

The invention provides a method for determining the molecular weight of ultra-high molecular weight polyethylene. According to the method, the melt mass flow rate and the viscosity average molecular weight of the ultra-high molecular weight polyethylene with different molecular weights are measured under specific conditions, so that the relationship between the melt mass flow rate and the viscosity average molecular weight of the ultra-high molecular weight polyethylene with different types under the specific conditions is established; and obtaining the molecular weight of the sample through a working curve or a regression formula. The method can be used for petrochemical enterprise product quality monitoring, processing enterprise raw material detection and the like.

The invention provides a TSN network system multi-clock domain time synchronization test method, and relates to the technical field of computer network communication, and the method comprises the steps: building a TSN multi-clock domain network topology structure which comprises at least four TSN end systems and at least two TSN switches, and respectively setting the clock role of each node; respectively testing link delays in the clock domain 0 and the clock domain 1 based on timestamps of various messages in AS time synchronization; when the global master clock works normally, obtaining a time synchronization precision value of the whole TSN network working in the clock domain 0 according to the local time of the TSN end system and the link delay of the clock domain 0; and when the global master clock is offline and the backup master clock works, obtaining a time synchronization precision value of the whole TSN network working in the clock domain 1. According to the method, the test precision is improved, the test time is shortened, the synchronization precision test problem of the multi-time-domain network is solved, and a reference basis is provided for development and test of similar products.

This invention relates to a method for testing the durability of mattress surfaces. A height measurement unit measures the average height of the mattress test surface within each cycle of the roller's reciprocating motion. An image acquisition unit simultaneously acquires images and uses AI to identify surface anomalies. Once a height change exceeds a preset threshold or an anomaly is detected, it is automatically recorded. An alert is automatically generated when an anomaly occurs. The entire process requires no manual intervention for measurement, observation, judgment, or manual termination, significantly reducing labor input. This mattress surface durability testing method offers the advantages of high testing efficiency and labor savings.

This invention relates to the field of single-board testing technology, specifically a single-board testing method and system based on logic configuration. The method includes: selecting several test boards based on a first human-computer interaction instruction on the test interface, and selecting several test cases based on a second human-computer interaction instruction on the test interface; a testing tool performing parallel testing on the several test boards through several network communication interfaces, and loading the corresponding several test cases; calling the test case logic file corresponding to each test case, and sequentially parsing and executing the logic rules in the test case logic file to obtain the execution result, and generating a test report. This method enables flexible selection of test boards and test cases, parallel testing of multiple test boards, and standardized configuration and precise execution of test logic, improving the efficiency, flexibility, and maintainability of single-board testing.