92 results about "Test duration" patented technology

A cooling-tower performance testing device, comprising: a first barrier member (11) arranged on a water output pipeline of an RIS-RHR heat exchanger (21); a heat-source obtaining assembly (12), which has a first end mechanically connected between the first barrier member (11) and a water outlet of the RIS-RHR heat exchanger (21) and a second end mechanically connected to an EHR gate valve (31); and a second barrier member (13), which is arranged on a pipeline connected between a water outlet of a PTR heat exchanger (51) and a hot-side water inlet of an ECS heat exchanger (41). The device enables an ECS to obtain a stable heat source from one loop, and supplies heat to the ECS heat exchanger (41), and a heat source is thus provided for carrying out a cooling-tower performance test, without temporarily laying a large number of pipelines, thereby omitting a large amount of pipeline disassembly and site restoration work, and also effectively shortening a test duration and reducing test costs. Further provided is a cooling-tower performance testing method.

The invention relates to the technical field of electric power fitting testing, in particular to an electric power fitting aging testing device and method, the stress state of an electric power fitting in actual use is simulated through the cooperation of a tensioning mechanism and a mechanical loading mechanism, environmental loads such as temperature change, humidity change and salt mist are applied through an environmental load simulation mechanism, and the aging test of the electric power fitting is achieved. And meanwhile, alternating current is applied to the electric power fitting through the power supply module, so that the actual load of the electric power fitting is comprehensively simulated, a test environment identical to an actual application environment is constructed, and the reliability of a test result is ensured. And meanwhile, an equivalent cable simulation load spectrum is deduced according to historical load data by using a fatigue damage model, and the tensioning mechanism, the mechanical loading mechanism and the environment simulation mechanism act cooperatively according to the cable simulation load spectrum to carry out aging test on the electric power fitting, so that the test time is shortened, and the accuracy of an aging test result is ensured.

The invention provides a nuclear power plant primary loop leakage rate calculation method and system, and the method comprises the steps: controlling a cooling medium to circularly flow in a test pipeline under a first preset pressure, and detecting whether the pressure boundary of a primary loop leaks or not; when the pressure boundary of the primary loop does not leak, controlling the circulating flow test duration of the cooling medium in the test pipeline under a second preset pressure, detecting whether recognizable leakage exists in the primary loop, and obtaining a recognizable leakage rate, a side leakage rate outside the pressure boundary of the primary loop and test data; calculating the overall leakage rate of the loop according to the test data and the test duration; and calculating the total leakage rate and the unidentifiable leakage of the loop according to the overall leakage rate, the identifiable leakage rate and the side leakage rate. According to the invention, when the auxiliary system of the unit under construction of the nuclear power plant is not completed, a set of test water tank can be connected between the discharge pipeline interface and the charge pipeline interface of the loop.

The application provides a test scheme for checking data retention performance of NOR type Flash memory, focuses on the influence of erase-write cycles on the data retention performance, unifies the erase-write cycle number of the Flash memory test, stipulates clear temperature selection criteria, provides a reference for the Flash memory related test, and comprises the following steps: step one: determining the basic test algorithm of the NOR type Flash memory as the Checkerboard algorithm from the algorithm design complexity and the fault coverage; step two: improving the Checkerboard algorithm process and determining the data retention fault determination step; step three: carrying out a pre-experiment to determine the data retention performance test temperature, erase-write number and sample number of the NOR type Flash memory; step four: determining the erase-write number of the data retention test at normal temperature and the sample number under each erase-write number; step five: determining the test pattern, failure criterion, test duration and test cycle; step six: carrying out the data retention test combined with the erase-write cycle based on the non-replacement timing truncation test; and step seven: test data processing, fitting the average failure time under different erase-write numbers with the erase-write number to obtain the corresponding relationship between the average failure time and the erase-write number.

The present disclosure provides a time sequence control method for a dry biochemical analyzer, a control apparatus, and a storage medium. The method comprises: dividing one biochemical test into k time sequence control cycles each in the form of nA+B, wherein each time sequence control cycle consists of two parts: nA representing n light measurement preparation parts, and B representing one light measurement part, and multiple reagent card tests are performed in each time sequence control cycle; in a light measurement preparation part of a current time sequence control cycle, controlling a card feeding device to perform card feeding actions required for light measurement on n reagent cards in the current time sequence control cycle, and controlling a sample loading device to perform sample loading actions required for light measurement on n reagent cards in the previous time sequence control cycle; and according to a preset light measurement action required by a biochemical test method in each time sequence control cycle, controlling, in a light measurement part of each time sequence control cycle, a light measurement mechanism to perform light measurement actions on all reagent cards in a reagent card reaction device. The total test duration of multiple items or multiple reagent cards is shortened, thereby improving the test efficiency.

The application provides a device and method for testing the duration and coagulation strength of black ice on a phase change asphalt pavement, and belongs to the technical field of road surface anti-icing performance testing technology. The device comprises a pressure head unit, a water tank unit and a collection unit. The pressure head unit comprises a hollow circular tube, a concentric variable-diameter special-shaped tube, a circular sheet, a steel ball, a circular rod, a cylinder and a spring. The water tank unit comprises a fan-shaped water tank, a plastic film, a screw, a level and a horizontal adjustment foot with a screw rod. The collection unit comprises an electric conductivity meter and a pressure gauge. The test method of the application is as follows: a freeze-thaw test is carried out on the phase change asphalt mixture with different thicknesses of water film on the bottom surface, the coagulation time, melting time and duration of black ice with different thicknesses are tested from the electric conductivity-time curve, and the coagulation strength of black ice with different thicknesses is tested by pressing the black ice with different thicknesses to break.

This invention relates to the field of power dispatch and control technology, and in particular to a method and system for constructing an AGC test and verification scenario library containing new energy sources. The method first standardizes and cleans abnormal data from multi-source historical power grid operation data, performs AGC unit inversion correction, and generates initial AGC test data sets by dividing the data into segments according to a preset test duration. Then, based on each data set, AGC closed-loop simulation tests are performed, and valid test samples are selected according to power flow convergence to construct a preliminary scenario library. Further, from three dimensions—typical operation scenarios, fault scenarios, and new energy output scenarios—the valid samples are clustered and labeled to extract composite test scenarios and remove redundant samples. Finally, an AGC abnormal operating condition quantification model is constructed to derive extreme abnormal operating condition test scenarios, forming the final scenario library, thereby improving the comprehensive verification capability of the AGC system under high-proportion new energy conditions.

The invention discloses an automatic test method for rated power of a DC / DC converter of a new energy automobile, which mainly aims at finding and adjusting the condition that the actual output power of the DC / DC converter is higher than a rated value in time and avoiding the risks of fuse fusing, line overheating, low-voltage electric equipment burning, even fire and the like caused by exceeding the bearing limit of a low-voltage system component. Specifically, the method comprises the steps of firstly deploying a power test system and performing line connection, setting test parameters after deployment is completed, starting a test and collecting test data within a preset test duration; in the test process, when the output power of the DC / DC converter exceeds the power control upper and lower limit values, the current of the DC electronic load is automatically adjusted, so that the output power of the DC / DC converter returns to the control range. According to the invention, the test value of the rated power of the DC / DC converter can be accurately obtained at one time, the test cost is greatly reduced, the safety is improved, and the consistency and reliability of the test result are effectively ensured.

The application discloses a kind of prediction methods of corrosion test vehicle parts corrosion grade, first combine the corrosion test data of vehicle parts with BP neural network method.The method is based on historical data and early test data, combined with the material type of target component, surface protection type, test duration and the corrosion grade of previous cycle, can quickly predict the corrosion grade of all subsequent cycles.The prediction method process includes: S1, data acquisition;S2, data preprocessing;S3, BP neural network construction;S4, model training optimization;S5, prediction output.Using the above method, the corrosion test cycle can be significantly shortened, and high-precision prediction support is provided for corrosion prevention process optimization and dynamic adjustment of test scheme.

The invention discloses an indoor simulation illumination test system of a solar cell array. The test system comprises a user interaction module used for forming a human-computer interface and determining a test task according to user operation, and task parameters of the test task comprise a target illumination intensity set value, test duration, a sampling mode, a recording strategy and a safety threshold; the communication module is used for abstracting a physical device into an addressable device object and providing command issuing and data reading capabilities for the device object; the control module is used for calculating a control quantity according to the target illumination intensity set value and an actual measurement value of the illumination sensor, and converting the control quantity into a corresponding adjustment instruction to perform an illumination test; the data stream processing module is used for performing stream processing on measurement data and control data generated in the illumination test process; and the safety protection module is used for executing a protection action when the safety event is triggered.

A test device and test method for a heat output of a heat pump water heater. The device comprises: a water tank (5) water inlet temperature sensor (1) and a water tank (5) water outlet temperature sensor (2); a flow meter (3), which is provided on a refrigerant liquid return pipe (6) between a heat pump water heater main unit (4) and the water tank (5); a sampling tank (7), which is provided on the refrigerant liquid return pipe (6); a refrigerant pipe inlet-to-water-tank temperature sensor (11) and a refrigerant pipe outlet-from-water-tank temperature sensor (12); two pressure sensors; an electric heating tank (8), which is connected in series between the water inlet and the water outlet of the water tank (5); and a circulating water pump (9), which is connected in series between the electric heating tank (8) and the water tank (5). The power supply end of an electric heating element is connected to an electric energy meter. The technical problems in the prior art of test failure and increased test cost caused by failing to accurately control the test duration for a heat pump water heater and the average temperature of a water tank during heat pump water heater performance testing can be solved.

The invention provides a hydraulic heavy-load sealing leakage rate measuring device and method, and belongs to the technical field of sealing element testing. The device aims at solving the problem that leakage rate measurement is not accurate under the heavy load and high pressure composite working condition. The device comprises a test tool for forming a sealing cavity, a hydraulic system for applying a normal load, a liquid supply system for providing a high-pressure medium, and a measurement module comprising a weighing device. The method comprises the steps of installing a sealing ring, applying a load and supplying a high-pressure medium, then collecting and weighing the mass of the leaked medium by using a weighing device, recording the test duration, and finally calculating the leakage rate according to the mass and the duration. The method can truly simulate harsh working conditions, adopts a mass method for direct measurement, is accurate and reliable in result, and gives consideration to both cost and automation degree.

The utility model discloses a sealing test device for a photovoltaic cell string, which comprises a transparent cover plate, a transparent bottom plate and two first clamping strips, the transparent cover plate and the transparent bottom plate are oppositely arranged, the transparent bottom plate is provided with a mounting groove for mounting the cell string, and the cell string comprises at least two cell pieces which are connected in sequence; each first clamping strip comprises an upper plate, a connecting plate and a lower plate which are connected in sequence, the upper plate, the connecting plate and the lower plate jointly define a first clamping groove, the transparent cover plate and the transparent bottom plate are clamped in the first clamping groove, and the two first clamping strips are oppositely arranged on the two sides of the transparent cover plate; an annular sealing piece is arranged between the transparent cover plate and the transparent bottom plate, and the projection of the mounting groove is located on the inner side of the projection of the annular sealing piece in the direction perpendicular to the upper surface of the transparent bottom plate, so that the test duration of the battery string can be shortened, and the test efficiency of the battery string is improved.

This invention discloses a method for designing an average lifetime verification test that follows a Type I minimum distribution, comprising the following specific steps: Step 1: For products whose lifetime follows a Type I minimum distribution, determine the probability density function and cumulative distribution function of their lifetime; establish the probability function corresponding to the number of sample failures; Step 2: Establish the mapping relationship between the true average lifetime of the product and location parameters and scale parameters, and derive the correlation function between the probability function corresponding to the number of sample failures and the acceptance probability function corresponding to the true average lifetime when given a number of received failures; and establish the first constraint condition and the second constraint condition; Step 3: Preset the test conditions, calculate and output the total test duration, the number of received failures, and the number of rejected failures that meet the test conditions, and form a time-truncated test scheme. The method proposed in this invention is simple to calculate, the evaluation results are more stable, it is convenient for engineering technicians to master and use, and it is easy to apply and promote.

The invention relates to the technical field of reliability testing, in particular to a reliability testing method for a special vehicle loading structure and a special vehicle loading test bed control device. The method comprises the following steps: receiving a test task; the test tasks comprise loading types, test times and test duration; installing a loading structure of the special vehicle in the test area, judging whether the type of the loading structure is matched with the loading type or not, and judging whether the number of tested times of the loading structure is smaller than the number of test times or not; when the type of the loading structure is matched with the loading type and the number of tested times is smaller than the number of tested times, controlling a driving assembly to drive the loading structure to move for a test duration, and obtaining test data of the loading structure; and judging whether the loading structure is reliable or not based on test data of multiple tests. By adopting the method, the reliability test of various top-mounted structures can be realized by using the same top-mounted test bed control device.

The invention relates to a method for controlling an electrical protection device. Each switching module is controlled (S118) to enter an open configuration when an electrical fault of the short circuit type is detected during step b) and when the trip energy is greater than or equal to a trip energy threshold in step d). Each switching module is controlled (S122) to enter an on configuration when a re-closing time of a given circuit breaker has elapsed. If the circuit breaker is connected immediately upstream of a given circuit breaker, the test duration (Tt) has not elapsed, and a short circuit is detected, performing steps c) to f) again; and controlling (S138) each switching module in an open configuration if no circuit breaker is connected immediately upstream of a given circuit breaker, a test duration (Tt) has not elapsed, and a short circuit is detected.

This invention discloses a testing method, testing device, computer program product, and storage medium for airbag deployment control. The method includes: acquiring test items, which at least include test fault items and vehicle collision types; the test fault items at least include a target fault sensor, sensor fault type, and fault duration; based on the test fault items, inputting a fault simulation signal corresponding to the test fault item to the airbag control system; based on the vehicle collision type, inputting a collision simulation signal corresponding to the vehicle collision type to the airbag control system; detecting the output control signal of the airbag control system within a preset test duration, where the preset test duration is greater than the fault duration setting; and generating test results for the airbag control system based on the output control signal. This invention solves the technical problems of limitations, high testing costs, and long testing cycles in related airbag deployment control system testing methods.

The application provides a method and system for stress testing of an artificial intelligence system with a heterogeneous architecture. The method for stress testing of an artificial intelligence system with a heterogeneous architecture includes: performing statistics on historical test data of previous stress tests in a historical database to determine the correlation between test environments, test case types, fault modes, and test durations; generating a personalized test strategy for each of a plurality of test environments under test of the artificial intelligence system with a heterogeneous architecture under test based on the correlation between the test environments, the test case types, the fault modes, and the test durations; and performing stress testing on the plurality of test environments under test in parallel based on the personalized test strategy of each of the test environments under test.

The invention discloses an electrolytic bath performance evaluation and operation load optimization method and device and a medium, and relates to the technical field of electrolytic bath evaluation, and the method comprises the steps: obtaining low-load test data of an electrolytic bath in a low-load operation state; the low-load test data comprises hydrogen purity, oxygen purity, unit tank voltage of each unit tank, actually measured circulating alkali concentration and test duration; calculating a membrane pinhole index according to the hydrogen purity, the oxygen purity and the unit groove voltages of all the unit grooves; calculating the attenuation index of the coating according to the unit tank voltages of all the unit tanks, the actually measured circulating alkali concentration and the test duration; evaluating the performance of the electrolytic cell according to the membrane pinhole index and the coating attenuation index to obtain a comprehensive health index of the electrolytic cell; and performing optimization decision on the operation load of the electrolytic cell according to the health comprehensive index of the electrolytic cell, and determining an electrolytic cell optimization decision measure. The method can realize accurate evaluation of the performance of the electrolytic cell while maintaining continuous production.

The invention discloses an internal scan chain generation method and device for an integrated chip in a 2.5 D / 3D circuit, a storage medium and equipment. The integrated chip comprises a plurality of cores, and each core is connected to each test bus through a controllable unit; the method comprises the following steps: receiving scan chain demand information; based on the received test demand information, by taking minimization of the overall test duration of the integrated chip as a target, utilizing a preset scan chain configuration model to obtain scan chain configuration information; and based on the obtained scan chain configuration information, controlling a corresponding controllable unit to generate a corresponding scan chain. By adopting the scheme, the configuration flexibility of the scan chain in the integrated chip can be improved so as to meet a dynamically changing integrated environment in a 2.5 D / 3D circuit.

A turbo pump low-temperature bearing full-size working condition test system and method belong to the technical field of turbo pump test, the tested bearing is enclosed in a test main body, the test system comprises a liquid nitrogen main line and a nitrogen pressurizing system; the liquid nitrogen main line comprises a liquid nitrogen main storage tank, a liquid nitrogen high-pressure storage tank, a liquid nitrogen subcooler, a liquid supply and return valve group pipeline, the test main body, a liquid nitrogen recovery storage tank and a liquid nitrogen recovery pump group connected in sequence, the liquid nitrogen in the liquid nitrogen main line flows from the liquid nitrogen main storage tank to the liquid nitrogen recovery pump group; the liquid nitrogen recovery pump group of the liquid nitrogen main line is connected with the liquid nitrogen high-pressure storage tank, forming a liquid nitrogen circulating loop; the liquid nitrogen recovery pump group of the liquid nitrogen main line is connected with the liquid nitrogen main storage tank, forming a liquid nitrogen recovery loop. The turbo pump low-temperature bearing full-size working condition test system and method have strong low-temperature simulation capability, strong compatibility of full-size working condition, long test duration, and can meet the low-temperature, full-size and large-flow test requirements of turbo pump low-temperature bearings.

The invention discloses a device for rapidly detecting the moisture content of tailings and a test method, and belongs to the technical field of detection, and the method comprises the following steps: vibrating a tailings sample, loading the tailings sample into a test mold, connecting a test circuit to obtain a resistance value, and calculating the actually measured moisture content through a moisture content-resistance fitting formula; synchronously constructing a tailing state model, an environment state model, an electrode field model and an electric field model, and outputting a tailing state coefficient, an environment state coefficient, an electrode field coefficient and an electric field coefficient; obtaining a test stability coefficient based on the electric field coefficient and the electrode field coefficient, and generating an adaptation degree through a density-particle adaptation model based on the tailing state coefficient, the environment state coefficient, the test stability coefficient, the tailing compactness and the coarse particle mass ratio; and in combination with the test duration, the result reliability is judged through a confidence model, and recording, early warning or re-testing are executed in a graded manner. The method is suitable for on-site rapid monitoring of the tailing pond.

A photoelectric-temperature-time coupled programming device and method for phase change memory (PCM) devices includes a pump laser system, an electrical testing system, a thermal control system, and control and monitoring software. These systems operate collaboratively. Under the unified coordination of the control and monitoring software, the pump laser system emits laser pulses with specified parameters, coordinating with a displacement platform to achieve gradual crystallization or amorphization switching within a specified laser irradiation area and path. The thermal control system reaches a specified ambient temperature at a certain heating rate. The electrical testing system records the electrical response of the PCM device in real time during a specified test duration, realizing "photoelectric control and electrical measurement" programming of the PCM device under specific conditions. This invention achieves quantitative control of the crystal to amorphous volume ratio during the gradual switching between SET and RESET via photoelectric control and electrical measurement, obtaining linear, continuous, and symmetrical changes in the switching resistance value.

The embodiments of the present application provide a network status test method and an electronic device. The method comprises: when parameters of a first network link satisfy a preset condition, sending a data packet to a server, wherein the parameters of the first network link comprise one or more of a signal strength of the first network link and a downlink data packet interval; on the basis of a data packet return rate within a test duration, determining a first network status of the first network link. The method and electronic device provided in the embodiments of the present application can be used to determine whether a network status test for a network link is required, so that unnecessary network status tests can be reduced, and resources occupied by network status tests can be saved. In addition, the accuracy of network status test results can be improved.

The invention provides a method and system for carrying out pressure testing on an artificial intelligence system of a heterogeneous architecture. The method for carrying out the pressure test on the artificial intelligence system of the heterogeneous architecture comprises the following steps: carrying out statistics on historical test data of previous pressure tests in a historical database so as to determine an association relationship among a test environment, a test case type, a fault mode and test duration; generating a personalized test strategy for each to-be-tested test environment in a plurality of to-be-tested test environments of the to-be-tested artificial intelligence system of the heterogeneous architecture on the basis of an association relationship among the test environment, the test case type, the fault mode and the test duration; and based on the generated personalized test strategy of each to-be-tested test environment, carrying out pressure test on the plurality of to-be-tested test environments in parallel.

The invention relates to a temperature control method and device for an artificial intelligence chip test, equipment, a storage medium and a program product, and relates to the technical field of artificial intelligence chips. According to the invention, the accuracy of artificial intelligence chip testing can be effectively guaranteed. The method comprises the following steps: acquiring a current voltage and a current frequency for a current test of the artificial intelligence chip, and inputting the current voltage and the current frequency into a first prediction model to output current predicted power consumption and a current predicted load rate of the artificial intelligence chip by the first prediction model, and inputting the current voltage, the current frequency, the current predicted power consumption, the current predicted load rate, the current initial temperature of the temperature control module and the current test duration used for the current test of the artificial intelligence chip into a second prediction model, so that the second prediction model outputs the current predicted temperature of the artificial intelligence chip. And sending a temperature adjustment instruction to the temperature control module according to the current predicted temperature, the test demand temperature for the current test of the artificial intelligence chip and the current initial temperature.

The invention discloses a bypass throttling pressure regulating system for an ejector, a design method and a pressure regulating method, and aims to solve the problems that the test duration of an existing ejector is limited, and the cost of an existing test time prolonging scheme is high or the system is complex. The system comprises a main pressure regulating valve of a main control pipeline, a throttling orifice plate of a bypass pipeline and a bypass quick switching valve, wherein the bypass pipeline is connected to the two ends of the main pressure regulating valve in parallel; the working pressure range of the main pressure regulating valve is expanded, the available pressure area of an air source is expanded, and the test duration is prolonged; additional pressure regulating valves or a large number of gas storage tanks are not needed, the number of parts is reduced, and the equipment cost is reduced; in the test process, the main pressure regulating valve and the bypass quick switch valve are controlled to be fully opened only through a PID program, the complexity of the control system is reduced, in addition, due to the existence of the bypass system, the flow flowing through the main pressure regulating valve is reduced, the flow load of the main pressure regulating valve is reduced, the control difficulty of the main pressure regulating valve is further reduced, and the test efficiency is improved. And the service life of the main pressure regulating valve is prolonged.

The invention discloses a method for testing and characterizing the lateral sliding friction coefficient of a tire, which comprises the following steps of: S1, warming the tire, and removing an oxide film on the surface of the tire to enable the temperature of the tire to reach the working temperature; and S2, applying a vertical load to the tire to enable the tire to roll freely, and performing quasi-steady-state side deviation on the tire at a set side slip angle loading rate to obtain a change curve of the lateral force and the aligning torque along with the side slip angle. According to the invention, the lateral slip state of the tire is approximately maintained in the whole course, the transition process from a linear region to a peak region in the lateral deviation movement of the tire is avoided, the influence of the slip speed and the tread temperature is coupled, the wear of the tire is reduced, and the test time is shortened; according to the characterization method, the change relation among the sliding speed, the tread temperature and the lateral sliding friction coefficient is visually presented through a thermodynamic diagram, and a visual basis is provided for research on the multi-factor coupling effect of the lateral sliding friction coefficient.

Embodiments of the present application disclose an application program testing method and device, electronic equipment and storage medium. The method comprises: obtaining a first test duration of a random test mode; according to a graph of a to-be-tested application program, executing a segment corresponding to a control in a page of the to-be-tested application program by the random test mode, recording a first segment and a first page that have been executed, obtaining a test result of the first segment, until the test duration of the random test mode reaches the first test duration; the segment is test content corresponding to the control; according to the graph, the first segment and the first page, determining a second segment that has not been executed and a second page where the second segment is located; according to the second page, executing the second segment by a traversal test mode, and obtaining a test result of the second segment. The embodiments of the present application can improve test efficiency and software quality of the application program.

A vehicle endurance test specification combination development method based on mixed entropy multi-index decision comprises the following steps: collecting damage data of a whole vehicle and a user, constructing a user-test field damage equivalent correlation model based on a load spectrum damage equivalent principle, and constructing a multi-target optimization model based on the damage equivalent correlation model; performing optimization solution on the multi-objective optimization model by adopting an NSGA-II algorithm to obtain a Pareto non-inferior solution set; introducing a mixed entropy weight method and a CRITIC method, constructing a mixed entropy multi-index decision algorithm, and determining the comprehensive contribution of each solution in the Pareto non-inferior solution set through the mixed entropy multi-index decision algorithm; and obtaining a solution with the highest comprehensive contribution based on the comprehensive contribution of each solution in the Pareto non-inferior solution set, and obtaining a vehicle endurance test specification based on the solution with the highest comprehensive contribution. Effective association between the test field and the user road in the endurance test specification making process can be realized, so that the test mileage and the test duration are reduced, and the test cost is reduced.