49results about How to "Improve test reliability" patented technology

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 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 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.

This utility model relates to the technical field of aging test equipment, and in particular discloses an automatic feeding multi-layer aging rack, including a frame and an aging line mounted on the frame. The aging line includes an aging station, an aging fixture, a transmission mechanism, a lifting assembly, and a drive motor. The frame has an interface for electrical connection to an external power source at the aging station. The aging fixture carries the test workpiece and performs aging tests on it. The transmission mechanism, mounted on the frame, transports the aging fixture to the aging station. The output shaft of the drive motor is connected to the transmission mechanism to provide power. The transmission mechanism drives the aging fixture, which in turn carries the test workpiece to the aging station. The lifting assembly lifts the aging fixture, causing it to connect the test workpiece to the interface for electrical aging testing. This utility model, by incorporating a lifting assembly, automates the entire process from loading the test workpiece to electrical connection for aging testing, reducing manual intervention and improving work efficiency.

The application provides a transmission high-low temperature cycle endurance test method and system, which comprises the following steps: collecting basic parameters, key parameters and implicit parameters of the transmission at a physical layer through a dual-mode sensing unit, mapping a physical test state through a digital twin model at a virtual layer to generate a virtual sensing feature set, and corresponding integration into a dual-mode sensing feature tensor; calculating a dynamic adaptation degree between a test requirement feature matrix and the dual-mode sensing feature tensor in real time through a preset multi-field coupling feature discriminator, generating a three-dimensional composite feature map based on the dynamic adaptation degree; constructing a virtual-real linkage adaptive test framework according to the three-dimensional composite feature map; extracting target data from the dual-mode sensing data and the test requirement document and filling it into the corresponding analysis sub-column, synchronously passing through the coupling correlation path in the three-dimensional composite feature map to complete the corresponding endurance test. The application can comprehensively and accurately complete the endurance test, and the test efficiency is improved.

The invention discloses a display device and a test system thereof, and a voltage regulation circuit, and the voltage regulation circuit for the display device comprises a power unit which is used for providing a turn-on voltage for a display panel of the display device; the current detection element is connected in series in the turn-on voltage loop and is used for detecting a current signal in the turn-on voltage loop in the display panel and outputting a detection current; and the adjusting unit is used for judging whether the display panel has a voltage drift condition or not according to the detection current, and controlling the power supply unit to adjust the magnitude of the turn-on voltage under the voltage drift condition. According to the invention, display abnormity caused by drifting of the threshold voltage of the thin film transistor is avoided. According to the invention, voltage regulation is automatically triggered when current abnormity is detected, and a good display effect can be ensured while dependence on manual intervention is avoided.

The application discloses a kind of automatic driving test problem diagnosis method, device, equipment and storage medium, method includes: from vector database inquires target document relevant to the description of the test problem of driving system, vector database includes the description document of different functional modules in driving system;According to test problem description and target document, using preset large language model carries out multi-round analysis and obtains diagnostic result.Through inquiring target document relevant to current problem, to obtain necessary effective information while reducing the text amount that large language model needs to process.Because large language model can automatically understand and analyze complex data through natural language processing capability, without relying on predefined rules, this enables large language model to flexibly and intelligently cope with various test problems, and large language model is analyzed through multi-round thinking, the next analysis depends on the output of last time, to obtain accurate diagnostic result, improves the comprehensive diagnosis of test problem.

The invention discloses a high-precision differential transient interruption signal generation system and method, and the system comprises a high-speed pulse light source device which comprises a high-power laser and a low-power laser; the high-power laser and the low-power laser are respectively connected with the optical power distribution device; the dual-channel power meter is connected to the first output ports of the two optical power distribution devices; the high-speed pulse mixer is connected to the second output ports of the two power distribution devices so as to enable the two paths of optical signals output by the two second output ports to be subjected to intensity gradient differential mixing and output analog optical signals; and the lower computer comprises a control module, a self-correction module and a calculation module, the control module is in signal connection with the high-speed pulse light source equipment and the dual-channel power meter, the self-correction module is connected to the control module, and the calculation module is connected to the control module and the self-correction module. The optical fiber transient interruption signal generator solves the problem that an existing optical fiber transient interruption signal generator adopts a single laser source scheme, and the precision of rapid transient signal simulation is insufficient.

The utility model relates to the technical field of engine parts testing, specifically is a valve guide rod surface friction and wear testing machine, including frame and fixed test bench on the frame, be provided with the guide seat on the frame, the guide seat inside slide joint has the cylinder type sliding block, the cylinder type sliding block drives the horizontal reciprocating movement in the guide seat through the first drive mechanism, the end of cylinder type sliding block is provided with the centering clamping mechanism for the valve guide rod circumferential clamping and coaxial positioning, the centering clamping mechanism includes the mandrel rotationally installed in the cylinder type sliding block inside, the mandrel is driven rotation through the second drive mechanism, is provided with the taper external thread head on the mandrel, the utility model discloses through the centering clamping mechanism design, has realized the quick clamping of valve guide rod sample, automatic centering and nondestructive clamping, effectively solved the technical problem that the traditional clamping mode exists and is poor in the centering accuracy, the operation is complicated, and the general property is insufficient, improved test efficiency and accuracy significantly.

The utility model discloses a device for permanent magnet motor rack test oil cooling control, including the temperature control component for adjusting oil temperature, the oil inlet component for conveying oil to the motor, the oil outlet component for extracting oil in the motor and the oil storage component for storing oil, the temperature control component, oil inlet component, motor, oil outlet component and oil storage component are connected gradually and form closed loop oil circuit, the oil inlet component includes oil inlet pump, and the oil outlet component includes oil extraction pump, the device for permanent magnet motor rack test oil cooling control of the utility model, can effectively control the oil intake and output of motor through setting two oil pumps, and the oil amount in motor is adjusted conveniently, avoids the oil accumulation effectively, and the motor test efficiency and reliability are improved.

The application is suitable for the technical field of back contact battery, and provides a back contact battery, a battery assembly and a photovoltaic system. In the back contact battery, a first test part and a second test part for contacting probes of different polarities of a testing device are arranged on a silicon substrate. The first test part is in communication with at least part of the second fine grid through a first bus grid line, and the second test part is in communication with at least part of the first fine grid through a second bus grid line. The area of at least one first test part is smaller than the area of a first pad, and the area of at least one second test part is also smaller than the area of the first pad. Thus, due to the arrangement of the first test part and the second test part, the positive and negative probes of the testing device can form stable contact with the first test part and the second test part, respectively.

The invention discloses a self-adaptive alignment test fixture for a multi-shape PCBA, and relates to the technical field of PCBA test fixtures, the self-adaptive alignment test fixture comprises a base, a rotary table structure and a positioning adjustment assembly, the rotary table structure is mounted in the base, the positioning adjustment assembly is mounted in the rotary table structure, the rotary table structure comprises a frameless motor, a rotary table and a heat dissipation plate, and the heat dissipation plate is mounted in the rotary table structure. The frameless motor is installed on the inner side wall of the circular groove of the base, the rotating table is installed on the inner side of the frameless motor, and the heat dissipation plate is installed on the top of the frameless motor. According to the self-adaptive alignment test fixture for the multi-shape PCBA, under the condition that the clamping test stability and accuracy of the square PCBA are kept, the mechanism capable of adjusting the coordinates of the characteristic parts of the circular PCBA is arranged, the coordinates of the specific parts of the PCBA to be tested are adjusted to be consistent with preset values, accurate alignment of the circular PCBA can be carried out in a self-adaptive mode, and the accuracy of the test is improved. Therefore, self-adaptive testing of PCBAs in various shapes and sizes is realized, the automation degree and the testing efficiency of the device are improved, and the practicability and the applicability of the device are improved.

The invention provides an engine anti-theft function test method and system, equipment and a storage medium, and belongs to the technical field of vehicle test. The test method comprises the following steps: controlling a key to move in a corresponding three-dimensional test space according to a preset test space range, and triggering an authentication process of an anti-theft function; synchronously acquiring spatial position sampling data of the key and an authentication result of the anti-theft function, and generating a training data set; the training data set is input into a preset machine learning model for training, a prediction model of the triggering probability of the engine anti-theft function is obtained, and the prediction model takes the spatial position information of the key as input and takes the probability that the engine anti-theft function is successfully triggered as output; and based on the prediction model, generating a three-dimensional function boundary representing the reliable triggering area of the anti-theft function of the engine. According to the method, automation of the testing process and comprehensive coverage of the three-dimensional space are achieved, the visual three-dimensional function boundary is generated through the machine learning model, and the testing efficiency and reliability are improved.

The invention discloses an indentation testing method and system suitable for a complex curved surface part, and relates to the technical field of material mechanical property tests.The method comprises the steps that an initial space coordinate system is confirmed; scanning the surface of the to-be-measured part through a three-dimensional contourgraph to obtain three-dimensional shape data and a curved surface equation, and calculating a tangent plane equation at a target measuring point on the to-be-measured part; determining an included angle between a plane intersection line between a tangent plane and the initial space coordinate system and a horizontal plane, and calculating and controlling the two telescopic rods to move according to the included angle and a preset interval between the telescopic rods; and calculating a central point coordinate of the spherical hinge moving assembly and a projection point coordinate of vertical projection on the plane where the positioning table is located so as to calculate a coordinate of the center of the positioning table, and calculating a coordinate difference between the projection point coordinate and the central coordinate so as to carry out indentation testing on the target measuring point. According to the invention, the indentation test can be rapidly, accurately and non-destructively carried out on the complex curved surface part.

The utility model discloses an adjustable slide rail impact performance test device, which comprises a bracket, and a group of parallel guide shafts and a measuring scale are arranged on the bracket along the height direction of the bracket; a sliding block stretches across the guide shaft and moves along the arrangement direction of the guide shaft; the front face of the sliding block is connected with the telescopic sliding rail through a bolt, and the back face of the sliding block is connected with the support through a plunger piece. The mounting height of the plunger part is adjustable; in the initial state, the tail end of the plunger part penetrates through the support and extends into the sliding block so as to limit the testing height of the sliding block. The slide rail is in an extending state; in a termination state, the tail end of the plunger part penetrates through the bracket and is separated from the slide block, and the slide block falls off from the test height under the action of self weight; and the slide rail is in a contracted state. The beneficial effects of the utility model are that the slide rail is driven by the slide block to move to any height on the steel ruler, the performance parameters of the slide rail after being impacted at a determined height are simulated, and the test precision and reliability are improved.

This invention relates to a highly reliable satellite-rocket docking and separation test method based on satellite-rocket separation elements, comprising: refining satellite-rocket separation elements; designing various unlocking and separation test conditions according to different combinations of satellite-rocket separation elements, causing the satellite-rocket separation elements to be pulled to their limits in a direction unfavorable to normal separation, thus completing a satellite-rocket separation unlocking margin test; comparing and determining the influence weight of each satellite-rocket separation element on the separation result based on the test results and the state of the satellite-rocket separation elements; optimizing the satellite-rocket docking and separation test according to the influence weight of each satellite-rocket separation element on the separation result, setting satellite-rocket separation elements with influence weights higher than a preset threshold to a state favorable to normal separation. This invention solves the problem of high probability of test anomalies caused by the designer system and optimizes and improves the satellite-rocket docking and separation test method, thereby improving test reliability.

This invention discloses a distributed testing method for UAV flight control computers based on Directed Acyclic Graph (DAG). Step 1: Build a distributed testing system; Step 2: Based on the distributed testing system in Step 1, construct a DAG task scheduling model; Step 3: Based on the DAG task scheduling model in Step 2, perform static allocation before scheduling; Step 4: Based on the DAG task scheduling model in Step 2 and the allocated static resources, achieve dynamic scheduling. This invention addresses the problems of susceptibility to node state influence and uneven distribution of node resources in current UAV hardware-in-the-loop (HIL) simulation testing platforms during test case scheduling.

The application discloses an automatic control system and method of an electrical parameter testing machine, and the system comprises an HMI terminal device, an insulation voltage resistance testing unit, a comprehensive testing unit, a testing terminal contact unit, a testing processing unit, a feeding unit, a discharging unit and a PLC control unit. The HMI terminal device is also a man-machine interface in the PLC control unit, supports editing, storage and calling of testing items and testing steps, and users add output actions, delay waiting, condition judgment, ending and other step types and configure parameters to form testing time sequence logic. Each terminal loop in the testing terminal contact unit is independently connected with a contactor, and the contactor is independently controlled by the PLC control unit. The PLC control unit controls actions of each unit according to the time sequence logic edited and issued by the user. The application improves the automation degree, flexibility and safety of electrical parameter testing.

The utility model relates to the technical field of thin film materials, and discloses a thin film material composition tester which comprises a mounting table, and the upper surface of the mounting table is fixedly connected with a tester body. The two extension frame plates are driven to move towards the middle along the limiting cross rod, then the two protection shells are combined and tightly wrap the tester body, the limiting cross rod is supported by the supporting base and matched with the extension lantern ring, stability and linearity in the moving process are ensured, the protection shells are prevented from inclining or shaking in the moving process, and the stability of the tester body is improved. Omnibearing protection of the tester body is realized, pollution and damage of external dust, sundries and the like to the tester body are effectively prevented, the service life of the tester is prolonged, the test precision and reliability are improved, meanwhile, automatic protection operation is convenient and efficient, a protection device does not need to be manually disassembled and assembled, time and manpower are saved, and the test efficiency is improved. And the use experience of the equipment is improved.

According to the memory chip test circuit provided by the utility model, the first test loop and the second test loop are arranged in parallel in the second side channel of the first analog switch and can be used for testing different test items, and the register is arranged in the second test loop and can be used for testing the test items corresponding to the first test loop. Meanwhile, an address signal of a next to-be-tested memory is sent to the second test loop in advance and is stored in the register, after a test item corresponding to the first test loop is completed, the address signal stored in the register can be sent out only by sending a switching instruction to the register, and the first analog switch is controlled to switch an input port of a corresponding channel; therefore, the address signal updating waiting time can be effectively shortened, the switching speed can be improved, signal interference in the switching action of the first analog switch can be shielded, and the test reliability can be improved.

The utility model discloses a prick reading instrument, and provides corresponding instrument equipment for realizing automatic operation of a skin prick test. According to the technical scheme, the prick reader comprises a case, an arm lifting cushion, an image acquisition mechanism and an industrial control computer, an opening is formed in the front end of the case and used for placing an arm into the case, the arm lifting cushion is arranged in a cavity in the front of the case, the image acquisition mechanism is arranged above the arm lifting cushion, and the image acquisition mechanism is connected with the industrial control computer. The image acquisition mechanism comprises a camera for acquiring a skin pricking area and a light source.

The application provides a Beidou navigation receiver automatic test control method and device, and relates to the technical field of navigation test. Through automatic generation of a test template, control signal generation and distribution, automatic data acquisition, performance index calculation and report generation, efficient and reliable testing of the Beidou navigation receiver is realized, and the test efficiency is significantly improved, manual operation errors are reduced, test reliability and standardization are enhanced.

The utility model belongs to the technical field of gas concentration detection, disclose a kind of online carbon dioxide concentration analyzer based on TDLAS technique. It includes box, gas collection module and detection module. Gas collection module is set in box, and gas collection module includes sample gas collection pipe, zero gas collection pipe, standard gas collection pipe and gas path switching piece, and sample gas collection pipe, zero gas collection pipe and standard gas collection pipe are all communicated in gas path switching piece, and gas path switching piece is selectively communicated in sample gas collection pipe, zero gas collection pipe or standard gas collection pipe, to supply sample gas, zero gas or standard gas;Detection module is set in box, and detection module is communicated in the output of gas path switching piece, and detection module includes carbon dioxide laser sensor, and carbon dioxide laser sensor is used to detect carbon dioxide concentration in sample gas. The online carbon dioxide concentration analyzer based on TDLAS technique can realize the direct measurement of high temperature and high humidity gas, and reduce the error, and the precision is high, and the drift is small.

The application belongs to the technical field of sealing test devices, and specifically provides a gas tightness test clamp. The gas tightness test clamp comprises an inlet joint and an outlet joint. The inlet joint is provided with a mounting hole for mounting the inlet end of a tested thin-walled cylinder, and the outlet joint is provided with a mounting hole for mounting the outlet end of the tested thin-walled cylinder. The mounting holes of the inlet joint and the outlet joint are both provided with a sealing ring for sealing cooperation with the circumference of the tested thin-walled cylinder. The inlet joint is provided with a sealing connection structure for sealing connection with a test bench and a gas passage. The inlet joint and the outlet joint in the application are both in sealing cooperation with the outer circumference of the tested thin-walled cylinder, and the sealing ring does not contact the sharp end of the thin-walled cylinder, so that the bolts and flange plates do not need to be disassembled and assembled multiple times. Compared with the bolt flange type sealing clamp, the reliability of the clamp and the test is greatly improved.

The utility model discloses positioning test equipment for a valve positioner. The positioning test equipment comprises a mounting bracket, a pipeline module arranged on the mounting bracket, a laser test assembly arranged in the pipeline module, and a clamping assembly arranged at the top of the mounting bracket and used for fixing the valve positioner. According to the scheme, the mounting bracket, the pipeline module, the laser testing assembly and the clamping assembly are integrated, so that high precision, high stability and high universality of the positioning test of the valve positioner are realized. The laser positioner and the light reflecting assembly are correspondingly arranged, so that the actual opening degree of the valve can be accurately captured, and the testing precision is greatly improved by comparing the actual opening degree with a feedback signal of the positioner; the clamping assembly and the limiting slot structure ensure that the positioner is stably installed, and looseness errors are avoided. Compared with traditional equipment, the structure is simpler, a complex fluid system is not needed, operation is convenient, and testing efficiency and reliability are effectively improved.

The utility model discloses a positioning jig and automobile parts life testing arrangement, including support shell, the both sides of support shell top are movably provided with the clamping assembly for the clamping fixed of automobile parts to be detected, the inside of support shell and the position of corresponding clamping assembly are installed the drive assembly for driving clamping assembly movement, and clamping assembly includes clamping shell, and the side surface sliding connection of clamping shell has the equal distance arrangement of a plurality of sliding clamping rods, and the end of a plurality of sliding clamping rods all are fixedly connected with the clamping seat for the clamping fixed of automobile parts. The utility model discloses through the rotation of biax motor drive screw shaft, under the thread action of thread sleeve, and the connecting sliding block makes clamping shell close to the part to be detected, and cooperate the clamping seat and limit telescopic component of telescopic of clamping shell side surface, can nimblely adapt to different shape parts and realize stable clamping, solved the problem of the unstable clamping of the prior art irregular parts, improved the test accuracy and reliability.

The invention discloses an intelligent temperature and humidity control temperature control instrument box and a control method, the intelligent temperature and humidity control temperature control instrument box comprises an infrared thermal image visual unit, an infrared thermal imager is arranged in the center of the top of a box body, and a two-dimensional temperature field distribution image in the box is continuously obtained; the dot matrix sensing unit is used for deploying a sensing grid consisting of a plurality of miniaturized and low-heat-capacity temperature and humidity sensors on the inner wall of the box body and the surface of the instrument to obtain absolute reference values (Ti, RHi), i = 1,..., N; the infrared thermal image vision unit and the dot matrix sensing unit are connected to a fusion processor through a built-in high-speed serial bus, fusion calculation of a two-dimensional temperature field distribution image and absolute reference value data is completed in the fusion processor, and only compressed field feature data are uploaded to a controller; the precise environment symbiont has self-sensing, intelligent decision making, resource optimization and sustainable evolution capabilities.