179results about How to "Improve test reliability" patented technology

The invention relates to the technical field of brushless motor testing, and discloses a test adjusting method and system for an intelligent brushless motor, and the method comprises the steps: carrying out the real-time monitoring of the current, rotating speed and load characteristics of the brushless motor, obtaining the operation data of the motor, and obtaining a motor working mode recognition result; constructing a motor parameter hierarchical optimization scheme; performing dynamic optimization to obtain a motor adaptive control parameter set; performing rolling optimization solution to obtain a motor prediction control instruction sequence; performing multi-objective optimization calculation to obtain a motor multi-performance balance adjustment scheme; a motor multi-performance balance adjustment scheme is integrated into a digital twin test platform, simulation verification is carried out on the performance of the brushless motor under different working conditions, a motor test adjustment strategy is obtained, the working mode of the motor can be recognized in real time, parameter optimization and performance prediction can be carried out based on historical data and the current state, and the stability of the motor test adjustment strategy is improved. Therefore, the optimal operation state of the motor under different working conditions is realized.

The invention relates to the technical field of composite fiber non-woven fabric manufacturing, in particular to a composite fiber non-woven fabric tensile property testing device which comprises a base, and an n-shaped support and a limiting sliding way located under the horizontal section of the n-shaped support are fixedly installed on the upper end face of the base. And a stretching mechanism for stretching the composite fiber non-woven fabric front and back is arranged on the limiting slide way. The tensile property test of the composite fiber non-woven fabric is completed by adopting an integrated operation model of stretching, twisting and extruding, the test reliability is improved by adopting a fixing mode of combining clamping of upper and lower cambered surfaces with matching of a rubber plate, a convex block and a groove, and meanwhile, the tensile property of the composite fiber non-woven fabric is improved through plane stretching, twisting and plane stretching tests after twisting as well as downward extruding and stretching of a middle section. The composite fiber non-woven fabric tensile property testing device can simulate complex stress conditions possibly faced by the composite fiber non-woven fabric in practical application, so that the tensile property of the composite fiber non-woven fabric in multiple stress states is comprehensively evaluated, multiple testing modes are realized on a single device, and the overall testing efficiency is improved.

The invention relates to the technical field of solar cells, and particularly discloses a back contact cell, a back contact cell string, a cell assembly and a photovoltaic system.The back contact cell comprises first grid lines and second grid lines which are alternately arranged in the first direction; the first Pad points and the second Pad points are alternately arranged in the second direction, the first Pad points are connected with the first grid lines, and the second Pad points are connected with the second grid lines; wherein the first grid line comprises a first grid line body and a third grid line, and the first grid line body and the third grid line are connected into an integrated structure; along the first direction, the third grid line is arranged at the corresponding first pad point, and the width of the third grid line is greater than that of the first grid line body. The problem of welding tension in the prior art can be solved, and the connection reliability between the welding strip and the fine grid is improved.

The invention relates to the technical field of solar cells, and particularly discloses a back contact cell, a back contact cell string, a cell assembly and a photovoltaic system. The back contact cell is provided with a first area and a second area along a second direction; the first area is internally provided with first grid lines and second grid lines which are alternately arranged in the second direction, and first Pad points and second Pad points which are alternately arranged in the first direction, the second area is not internally provided with Pad points, and the second area is internally provided with third grid lines and fourth grid lines which are alternately arranged in the second direction; the fifth grid line and the sixth grid line are alternately arranged in the first direction, the fifth grid line is connected with the third grid line, the sixth grid line is connected with the fourth grid line, and the fifth grid line and the sixth grid line both extend in the second direction and have discontinuous areas. When the back contact battery is tested, the test difficulty is reduced, and the test reliability and stability are improved.

The invention provides an automatic driving test system and method for a special vehicle, and the system comprises an environment simulation module which is used for constructing different simulation scenes required by the test of the special vehicle; the sensor simulation module is used for simulating sensor data collected by a sensor in the special vehicle based on the simulation scene; the controller is used for controlling the automatic driving system to perform automatic driving test on the special vehicle model in the same simulation scene according to the sensor data in the simulation scene; the monitoring module is used for monitoring operation data of the automatic driving system in the test in the simulation scene; and the data processing module is used for receiving test data generated by different simulation scenes in the test, performing performance analysis on the automatic driving system according to the test data and generating an optimization report of the automatic driving system based on an analysis result, and the test data comprises simulation scene data, sensor data and operation data. Therefore, the development efficiency and the test precision of the automatic driving technology of the special vehicle are remarkably improved.

The invention relates to the technical field of network security vulnerability automatic testing, and discloses a curiosity-driven and deep reinforcement learning-based XSS automatic testing method, which comprises the steps of constructing an input environment for injection point exploration, constructing an intelligent agent with an internal reward mechanism, and constructing an XSS automatic testing system. A state flow diagram is constructed to record and manage a state flow path accessed by the intelligent agent in the exploration process, and injection point information is obtained; transmitting the injection point information to an intelligent agent in an attack vector generation model, and constructing a state space, an action space and a reward function in the attack vector generation model; and carrying out attack verification on the response page after the attack vector generation model sends the attack request to the target page, calculating a reward according to a verification result, and feeding back the reward to the attack vector generation model. According to the method, high coverage rate and high accuracy are achieved in the aspect of identifying the XSS injection points in the Web application, meanwhile, manual intervention is not needed in the training and testing process of the intelligent agent, and the testing efficiency and reliability are greatly improved.

The invention relates to the technical field of solar cells, and particularly discloses a back contact cell, a back contact cell string, a cell assembly and a photovoltaic system. The back contact cell is provided with a first area and a second area along a second direction; the first area is internally provided with first grid lines and second grid lines which are alternately arranged in the second direction, and first Pad points and second Pad points which are alternately arranged in the first direction, the second area is not internally provided with Pad points, and the second area is internally provided with third grid lines and fourth grid lines which are alternately arranged in the second direction; and the grid lines in the first preset area and the second preset area are narrowed. When the back contact battery is tested, the test difficulty is reduced, and the test reliability and stability are improved.

The invention discloses a test method and device of a controller local area network and a storage medium, and relates to the technical field of automotive electronics, the test method of the controller local area network comprises the following steps: analyzing a database calibration file to obtain a message identifier array and a diagnosis message identifier array; performing network initial detection on the controller local area network to obtain error frame number frequency; and testing the controller local area network according to the error frame number frequency, the message identifier array and the diagnosis message identifier array to obtain a target test report, and completing the test. According to the method and the device, the test accuracy is improved, and a reliable basis is provided for network optimization and fault diagnosis through a systematized test result, so that the test efficiency of the controller local area network is improved, and the test reliability of the controller local area network is enhanced.

The invention relates to the technical field of solar cells, and particularly discloses a back contact cell, a back contact cell string, a cell assembly and a photovoltaic system. The back contact cell is provided with a first area and a second area along a second direction; the first area is internally provided with first grid lines and second grid lines which are alternately arranged in the second direction, and first Pad points and second Pad points which are alternately arranged in the first direction, and the second area is internally provided with third grid lines and fourth grid lines which are alternately arranged in the second direction, and fifth grid lines and sixth grid lines which are alternately arranged in the first direction. The fifth grid line and the sixth grid line extend in the second direction and have discontinuous areas, the fifth grid line is arranged on the extension line of the first main grid in the second direction, and the sixth grid line is arranged on the extension line of the second main grid in the second direction. When the back contact battery is tested, the test difficulty is reduced, and the test reliability and stability are improved.

The invention relates to the technical field of mechanical part testing, in particular to a crane jib mechanical part vibration testing device which comprises a vibration platform fixedly arranged at the bottom, the top of the vibration platform is used for installing a cantilever crane, a fixing table is arranged on the left side of the vibration platform, and a fixing steel frame is arranged on the top of the fixing table. The device comprises a fixed steel frame, an overhanging displacement mechanism is installed on the fixed steel frame, the left end of the overhanging displacement mechanism is connected with external matched telescopic equipment, a lifting position control device is installed at the right end of the overhanging displacement mechanism, and position control testing devices are installed on the front side and the rear side of the lifting position control device respectively. The device can be installed in a workshop to test the vibration state of the cantilever crane under different vibration simulation working conditions and obtain the vibration frequency and amplitude, effectively monitors whether different vibration point positions of the current cantilever crane exceed a safety threshold value or not, timely uploads the conditions and then gives an alarm.

The invention provides an automatic testing method and device for an electric energy meter, and belongs to the technical field of electric energy meter testing. The automatic test method for the electric energy meter comprises the following steps: S1, constructing a test case library corresponding to test requirements of at least one type of electric energy meter; s2, an analog circuit capable of simulating a plurality of operation behaviors of the electric energy meter is arranged on the analog signal board; s3, a corresponding test case is matched in the test case library according to the test requirement of the to-be-tested electric energy meter; and S4, controlling the analog signal board to output a corresponding analog operation signal according to the test case, and obtaining a test result corresponding to the to-be-tested electric energy meter according to the analog operation signal. According to the method, manual operation is replaced by an implementation mode of converting test process operation, different test operations are converted into signals to be input into the sampling points of the electric meter, so that the purpose of realizing related tests is achieved, the test cost is reduced, the test precision and reliability are improved, the test efficiency is improved, and compared with manual test, the method can stably run for a long time.

The invention discloses a flow instrument test-free air flow calibration method for a VGT axial nozzle ring supercharger, and particularly relates to the technical field of turbochargers, which comprises the following steps: preparing equipment, calculating required air flow requirements, obtaining a performance curve relation graph according to analog simulation analysis, forming a theoretical performance curve relation graph by analog calculation values, and calibrating the performance curve relation graph according to the theoretical performance curve relation graph. The method comprises the steps of gas source connection, displacement gauge installation and positioning, initial measurement of automatic program detection, test out-of-tolerance fine adjustment and repeated measurement of automatic program detection. According to the invention, the matching relation among the actuator control pressure, the actuator valve rod displacement, the VGT axial nozzle ring blade opening degree and the rocker arm rocker rotation angle is simulated and calculated, and the pneumatic test bench and the displacement sensor are utilized at the same time; the actual matching condition of the actuator valve rod displacement, the VGT axial nozzle ring blade opening degree and the rocker arm rocker rotation angle of a VGT structure supercharger product in the production process can be monitored on line, the air flow calibration technology free of flow instrument testing is achieved, and the design requirement is met.

The invention provides a memory testing method. The memory testing method comprises the step of performing repeated addressing testing on a memory based on an intrinsic initial value of the memory. According to the memory testing method provided by the invention, the problems that all addressing faults cannot be detected by an existing fault testing method with a simple algorithm and the fault testing method with a complex algorithm needs too many testing vectors and the testing time is too long are solved.

The invention provides an automatic test method and system for urban lighting monitoring equipment, a program product and a storage medium, and relates to the field of urban lighting monitoring. The universal communication interface serves as a data interaction channel and can receive data transmission of different urban lighting monitoring devices. And the universal protocol encoding and decoding interface analyzes or encodes the data, generates a test case according to a preset rule, and accurately positions the direction for a subsequent test. The current test progress is updated in real time based on the test context constructed by the elements, the current test details and the content of data reported by the urban lighting monitoring equipment are recorded in details, the event information of the whole stage of the test from preparation to start, completion to end is covered, and the test process is navigated. The whole test process is closely linked and orderly, the automatic test of the urban lighting monitoring equipment is realized, and the test efficiency is improved.

A high-speed roller screw testing device comprises a lathe bed, a power assembly for providing power for a roller screw is arranged on the lathe bed, the end portion of the roller screw is connected with a screw nut, the end portion of the screw nut is connected with a loading mechanism for providing load for the roller screw, and a connecting mechanism is arranged between the roller screw and the loading mechanism. The power assembly comprises a power motor and a diaphragm coupling arranged on a roller screw. Compared with the prior art, the brake and the loading roller screw in the loading mechanism are used for providing load for the roller screw, and the pneumatic control system is used for adjusting the air pressure of the brake, so that the accurate control of the loading torque is realized, the roller screw realizes passive loading, the response speed is high, and the loading precision is high. According to the utility model, positive and negative rotation loading force loading of the roller screw can be rapidly realized, and meanwhile, the diaphragm coupling can provide gapless transmission and is gapless and impact-free during reverse loading, so that continuous positive and negative rotation testing is realized, the testing efficiency is improved, and the labor cost is reduced.

The invention discloses a Java unit test code generation method and system based on an IDEA plug-in, and belongs to the technical field of computers. The method comprises the steps of obtaining a target code; analyzing the target code to obtain a code analysis result; inputting the code analysis result into a pre-training model for training to obtain a fine-tuned large model; obtaining a to-be-tested code; and inputting a to-be-tested code into the fine-tuned large model to obtain a unit test code. According to the method, the multi-scene test case is intelligently generated, so that the test coverage rate of codes is increased; service logic and abnormal conditions are fully covered, and the test reliability is enhanced; the workload of manually writing the test case is reduced, and the development cost is reduced; the test case is quickly generated, and the writing time of the test code is shortened.

The invention provides an aircraft flight control system comprehensive automatic test platform and method based on a network architecture. The platform comprises automatic test software, test control software, test control simulation equipment and a flight control subsystem airborne finished product to be tested. The test control simulation device comprises a comprehensive test control simulation device and a plurality of flight control subsystem test control simulation devices. Each flight control subsystem test control simulation device is connected with the corresponding flight control subsystem airborne finished product and is used for sending configuration information to the flight control subsystem airborne finished product and receiving acquisition information provided by the flight control subsystem airborne finished product; the test control software comprises ground maintenance data acquisition software, comprehensive test control software and flight control subsystem test control software; the test control software is connected with the test control simulation equipment, sends a control instruction to the test control simulation equipment, and receives response information of the control instruction sent by the test control simulation equipment; the ground maintenance data acquisition software is connected with the comprehensive test control simulation equipment and the plurality of flight control subsystem test control simulation equipment and is used for receiving acquired information; and the automatic test software is connected with the test control software, sends a control instruction to the comprehensive test control software and the flight control subsystem test control software, obtains a response, and obtains acquisition information sent by the ground maintenance data acquisition software. The comprehensive test technology of multi-bus acquisition and lumped control is combined, the establishment of the comprehensive test platform of the aircraft flight control system is optimized and completed, and the automatic comprehensive control and detection of the aircraft flight control system are realized.

The invention relates to a battery extrusion testing device and method, in the device, a fixing assembly is arranged on a supporting assembly, a control module is connected with an extrusion head, and the fixing assembly fixes a to-be-tested battery; the extrusion head extrudes at least two extrusion positions of the to-be-detected battery; the control module controls the extrusion head to move in at least two extrusion directions; the extrusion directions are in one-to-one correspondence with the extrusion positions, so that the extrusion test of the to-be-tested battery at different extrusion positions is realized. Compared with a traditional mode of fixing the to-be-tested battery through an adhesive tape, the testing reliability is greatly improved, and the number of times of testing interruption caused by abnormity is reduced. The testing device is simple in structure and can be suitable for to-be-tested batteries of different sizes and models; the extrusion test is performed on at least two extrusion positions of the to-be-tested battery, so that the obtained test result can more accurately represent the extrusion resistance of the to-be-tested battery, and the result error of the extrusion resistance test of the battery is reduced.

An ink testing machine relates to the technical field of ink testing equipment and comprises a rack, a first linear module, a second linear module and a jet printing assembly, a testing platform is arranged in the middle of the top of the rack, and an ink receiving groove is formed in one side of the testing platform. The first linear module comprises first linear rails fixed on the rack on the two sides of the test platform and first linear sliding blocks on the first linear rails, the end part of one first linear rail is provided with a first linear driving motor, and a connecting shaft is arranged between the end parts of the two first linear rails; the second linear module comprises a second linear rail and a second linear sliding block on the second linear rail, a second linear driving motor is arranged at the end of the second linear rail, and the jet printing assembly comprises a jet printing support fixed to the second linear sliding block and a nozzle on the jet printing support. According to the utility model, the jet-printed ink is collected and then treated in a centralized manner, so that the use of a large amount of paper or cloth for testing is avoided, the consumption of resources is reduced, the generation of waste paper or waste cloth or waste water is reduced, and the environmental protection is facilitated.

The invention discloses a dynamic characteristic multi-parameter characterization system and method of a power field effect transistor, and relates to the technical field of electrical variable measurement. Comprising the following steps: automatically adjusting input voltage, current and frequency according to the type and application scene of a power FET to be tested, and ensuring that a test system adapts to dynamic characteristics of different FETs; activating a high-frequency optimization mode and applying a broadband signal compensation algorithm, a bandwidth enhancement algorithm and a signal denoising algorithm to enable the signals to keep accuracy and definition in a high-frequency range; on the premise of ensuring the test precision, a low-power consumption mode is started, and power consumption is adjusted through dynamic power consumption management; comprehensive analysis of data is carried out, and parameter feedback optimization is carried out. According to the invention, high-precision, high-efficiency and multi-dimensional optimized dynamic performance test of the power FET is realized, and the test reliability and applicability are remarkably improved.

The embodiment of the invention discloses a current detection circuit and current detection equipment, the current detection circuit comprises a power supply input interface, a power supply output interface and a detection circuit, and the power supply output interface is connected with a circuit to be detected; the detection circuit comprises a shunt unit, a first connecting end, a second connecting end and a third connecting end, the shunt unit is connected between the first pole of the power input interface and the second connecting end, a first ampere meter is connected between the first connecting end and the second connecting end, and a second ampere meter is connected between the second connecting end and the third connecting end; when the current of the to-be-tested circuit is greater than a preset threshold value, the shunting unit is conducted, and the current drives the second ammeter to generate pointer deflection through the shunting unit; when the current of the to-be-tested circuit is smaller than a preset threshold value, the shunting unit is switched off, and the current drives the first ammeter to generate pointer deflection; wherein the first ampere meter and the second ampere meter are different in measuring range. The test efficiency and reliability can be improved.

The application provides a kind of virtual marshalling under global optimization curve test method, device, equipment and medium, it is related to rail transit technical field, the method comprises: extracting the third speed information corresponding to the car after marshalling from the first speed information, extracting the fourth speed information corresponding to the car after marshalling from the second speed information;According to fourth speed information and third speed information, determine the speed difference mean of the car after marshalling;According to the speed difference mean and preset speed, output the test result of virtual marshalling train global optimization curve.The application combines the speed corresponding to different time when virtual marshalling train runs according to preset recommended speed and the preset limit speed corresponding to different time to prevent virtual marshalling train from triggering emergency brake, realizes accurate verification to marshalling train running global optimization curve, has higher real-time and accuracy, improves the test efficiency and reliability of virtual marshalling, guarantees the operation safety of virtual marshalling train.

The invention relates to the technical field of battery safety testing, in particular to a battery thermal runaway testing method, device and equipment, a medium and a program product, and the method comprises the steps: obtaining battery state parameters of a to-be-tested battery, and determining heating parameters of corresponding electromagnetic induction equipment; generating an expected temperature rise rate according to the heating parameters and the battery state parameters, and detecting an actual temperature rise rate of the to-be-detected battery at the current moment; and calculating an adjustment value of the heating parameter according to a difference value between the expected temperature rise rate and the actual temperature rise rate, and heating the to-be-tested battery until the to-be-tested battery meets a certain thermal runaway condition, thereby obtaining a thermal runaway test result. Therefore, the problems that in the prior art, needling can damage the structure of the battery and repeatability is poor; extra energy needs to be input during overcharging, and a real thermal runaway scene cannot be reflected; the problems that in the prior art, external heating efficiency is low, heat distribution uniformity is poor, accurate control and uniform heating of the interior of the battery are difficult to achieve, and universality is not achieved are solved.

The utility model discloses a combination device for module brightness automatic testing. The combination device comprises a display screen and a physical optical module arranged on the front side of the display screen. The display module is arranged on the back face of the display screen and displays data of the display screen in real time, the display mainboard module is in signal connection with the display module, the single-chip microcomputer and the brightness control module are in signal connection with the display mainboard module, and the sensor module is in signal connection with the single-chip microcomputer and the brightness control module. The display mainboard module and the single-chip microcomputer and brightness control module are respectively connected with the power supply module, and the sensor module obtains display screen light rays obtained by the physical optical module. By adopting the above structure and through the hardware design of combining the display module and the sensor, the problem of light sensor component testing is solved while the requirement for monitoring the brightness of the display screen is met, the testing labor cost of a product end is reduced, and the product testing reliability is improved; and meanwhile, the product competitiveness is improved.

The invention relates to the technical field of vehicle remote upgrade, and discloses an OTA automatic test system and method, the system comprises an OTA holder, a test holder and a tested device, the tested device is provided with a test application and an FOTA application, and is deployed with an OTA channel; the OTA holder is used for deploying upgrading information used by an actual OTA upgrading task; the test holder is used for configuring a test task for testing the OTA upgrading process; the test application is used for receiving a test task and performing test operation on the FOTA application according to the test task; the FOTA application is used for acquiring upgrading information from the OTA holder according to the test operation of the test application, and upgrading the OTA channel by using the upgrading information. After the test task is issued, the test holder does not need to participate in the upgrading process any more, decoupling of the test holder and the tested equipment is achieved, a large amount of communication interaction is reduced, comprehensive evaluation is conducted on the complexity of software deployment, hardware cost and site cost, and the cost of an automatic test scheme is remarkably reduced.

The utility model discloses an airplane wheel rotation driving device, which belongs to the technical field of rotation driving devices, and comprises a rotation driving equipment table and a friction wheel, the friction wheel is arranged on one side of the rotation driving equipment table, a turnover adjusting mechanism is arranged between the rotation driving equipment table and the friction wheel, and the turnover adjusting mechanism comprises a turnover angle adjusting frame, a rotating shaft and an adjusting assembly. The rotating shaft is rotationally connected to the interior of the belt rotating equipment table, and the overturning angle adjusting frames are fixed to the two ends of the rotating shaft; according to the utility model, through the arrangement of the overturning adjusting mechanism, the lifting toothed plate is driven by the lifting air cylinder to be in meshing transmission with the driven gear, so that the friction wheel is automatically overturned and moved out, reset and stored, the use state and the idle state are freely switched, the operation is simple, convenient and efficient, and the friction wheel can be completely stored in the accommodating groove of the belt rotating equipment table when being idle; the device is flush with the surface of the equipment table, so that the occupied space is greatly reduced, avoiding space is provided for airplane wheel falling, interference to airplane traction and other testing operations is avoided, and the smooth testing process is guaranteed.

The invention discloses an IEC61375-based train MVB / WTB network test device, which comprises an MVB intelligent diagnostic apparatus, the MVB intelligent diagnostic apparatus comprises a case body, a WIFI antenna, a 4G antenna, an aviation plug, a communication network port, a liquid crystal display screen, a power panel, a carrier plate, a core plate, a wireless module, a battery template and an isolation small plate, the case body is composed of a case bottom plate, a case front panel, a case side plate and a case rear panel, and the case bottom plate is composed of a case bottom plate, a case front panel, a case side plate and a case rear panel. The case bottom plate is located at the bottom, the case front panel and the case rear panel are arranged on the front side and the rear side of the case bottom plate respectively, the two sets of case side plates are symmetrically installed on the left side and the right side of the case bottom plate, the WIFI antenna, the 4G antenna, the aviation plug and the communication network port are installed in the case front panel, and the liquid crystal display screen is installed on the case body. The power supply board, the carrier board, the core board, the wireless module, the battery template and the small isolation board are installed in the case body. According to the invention, the operation is simplified, the cost is reduced, the user friendliness is improved, the installation and maintenance cost is reduced, and the test precision is improved.

The present invention discloses a gate resistance program control system for IGBT testing, which is used to provide the gate resistance required for IGBT testing. The system includes a host computer, a microcontroller, a reduction motor, a switch control unit and a resistance network. The host computer is used to send control signals according to different instructions input by the user. The microcontroller is connected to the host computer and the reduction motor in communication, and is used to control the rotation of the reduction motor according to the control signal sent by the host computer. The reduction motor is also connected to the switch control unit, and is used to drive the switch control unit to operate when rotating, so that the resistance network connected to the switch control unit is switched to different output circuits, thereby providing gate resistances of different resistance values. The present invention also provides a gate resistance program control method for IGBT testing. In this way, gate resistances of different resistance values ​​can be provided through program control, thereby improving test efficiency and reliability.

The present application belongs to the technical field of material environmental adaptability testing, and particularly relates to a multi-field coupling environment simulation test device, which comprises a test box body, the test box body is divided into upper and lower installation spaces by a first partition plate; a sand blasting erosion assembly for simulating a sand blasting erosion environment, a saline-alkali corrosion assembly for simulating a saline-alkali corrosion environment and an ultraviolet aging assembly for simulating a sunlight ultraviolet environment are integrated in the installation spaces; the sand blasting erosion assembly is composed of a sand blasting head, a sand bin mechanism and a sand blasting pump; the sand bin mechanism comprises a sand bin, and a power vane driven by waste sand gravity is arranged on a waste sand falling path in the sand bin. The present application can realize integrated testing of three major environmental factors, ensure that the testing environment is highly consistent with the actual natural environment, improve testing efficiency and data reliability, and reduce equipment purchase and operation and maintenance costs.

The invention discloses an automatic inductance compensation method for a voltage transformer withstand voltage test device, which relates to the technical field of electric energy metering and comprises the following steps: a test host applies test parameter information to a voltage transformer; parameters of the voltage transformer are collected to obtain measurement data information; calculating an optimal compensation inductance value according to the measurement data information and the test parameter information; and controlling the adjustable compensation inductor according to the optimal compensation inductance value to enable the adjustable compensation inductor to output the optimal compensation inductance value. The invention further discloses an automatic inductance compensation system for the voltage transformer withstand voltage test device. The voltage transformer test is compensated by accurately calculating the compensation inductance value, the accuracy and precision of the test are ensured, and the test efficiency and the test reliability are improved.