15results about How to "Valid test" patented technology

The invention discloses a test method for a high-load heating tube for a mold, and belongs to the technical field of single-head electric heating tube detection. The method specifically comprises the following steps: S1, historical data acquisition: acquiring cold-state electrical performance data of single-head electric heating tubes with different specifications and under different working conditions; s2, historical data preprocessing: performing preprocessing including data cleaning, data normalization and data standardization on historical data to obtain a standardized data set; the test process design covers a full-period closed loop of cold state detection, hot state leakage current test, reliability test, secondary hot state leakage current test and secondary cold state detection, the electrical safety (leakage current control) under a high-load working condition is verified through the hot state test, and the reliability of an actual use scene is simulated through a rapid on-off test. Meanwhile, the appearance, temperature, gas release and other states of the heating pipe are monitored in real time, abnormal testing is terminated in time, safety risks are avoided, and it is ensured that the detection result can comprehensively reflect the actual use performance of the heating pipe.

This invention pertains to inertial navigation technology and relates to a Q-value testing system and method for high-vacuum resonators. The testing system includes: a sinusoidal excitation signal on / off switch, an AC excitation signal source, a DC high-voltage excitation on / off switch, a high-voltage voltage source, a mode selection switch, a resonator vibrating mass block, comb teeth on the left and right fixed ends of the resonator, a charge amplifier, a dedicated data processing unit, and a dedicated shielding shell. The testing method includes the following steps: Step 1, installation of the high-vacuum resonator; Step 2, mode setting; Step 3, after completing the resonator drive, disconnecting either the sinusoidal excitation signal on / off switch or the DC high-voltage excitation on / off switch, allowing the resonator to enter a natural decay state; Step 4, calculation. This invention has the advantages of being economical, practical, simple, and reliable, and can effectively and accurately measure the Q-value of high-vacuum resonators.

The present invention relates to a method for inspecting a shuttle valve (2) in a pneumatic system (100), wherein the shuttle valve (2) has a first shuttle valve interface (2.1), a second shuttle valve interface (2.2), and a third shuttle valve interface (2.3), wherein the higher of the pressures (p1, p2) applied at the first shuttle valve interface (2.1) and the second shuttle valve interface (2.2) is always regulated to the third shuttle valve interface (2.3), wherein the method comprises the following steps: a) regulating a first pressure (p1) to the first shuttle valve interface (2.1); b) obtaining an indication value (G1, G1T) at the first shuttle valve interface (2.1) for the first pressure (p1); and c) comparing the indication value (G1, G1T) for the first pressure (p1) with a predetermined first comparison value (GV1, GS1) set for this purpose, and if the deviation is greater than a first tolerance (T1): obtaining and / or outputting a fault (E) in the shuttle valve (2).

The invention discloses a dynamic test method, device and equipment for an autonomous vehicle, a medium and a product. The method comprises the following steps: acquiring a target test scene from a scene library; if a first takeover instruction is received, determining a target agent matched with the first dynamic target from the agents, and takeover the driving behavior of the first dynamic target in the target test scene based on the target agent; and according to the target test scene and the taken-over first dynamic target, dynamically testing the intelligent driving model of the autonomous vehicle to obtain a test result. According to the scheme, the systematic bottleneck that authenticity, interactivity and efficiency of the test are difficult to achieve at the same time is solved, the intelligent agent is trained in advance, the intelligent agent serves as the moving target to interact with the automatic driving vehicle in the target test scene, the interactive decision-making ability of the automatic driving vehicle can be effectively tested, and the test efficiency is improved. And the authenticity of the automatic driving vehicle test is improved.

This application relates to the field of security testing technology, specifically to a method and apparatus for generating fuzzy test data for vehicle-to-everything (V2X) security. The method includes: acquiring CAN bus data; calculating a parameter activity coefficient based on CAN bus frame data with the same ID in the real vehicle data, used to measure the activity and boundary conditions of various control commands in the real vehicle data; then combining the correlation between different IDs to perform temporal correlation feature measurement, and further calculating a random weight coefficient to measure the intensity of random transformation of each CAN bus frame data in the real vehicle data; and correcting the standard deviation of Gaussian noise based on the activity of different types of data and the dependencies between data, thereby generating test data for V2X security fuzzy testing. This application aims to generate test data that conforms to the statistical laws of vehicle communication, thereby improving the data pass rate in the underlying protocol stack and thus more effectively testing the upper-layer business logic.

The invention belongs to the technical field of automatic equipment, and discloses an automatic alignment assembly jig and an automatic alignment assembly method.The jig comprises a rotary pressing module, a flat cable shifting module and a limiting module. The rotary downward pressing module comprises a downward pressing assembly and a rotating assembly rotationally connected to the downward pressing assembly, the first structure can rotate along with the rotating assembly to face a second structure borne on the carrier, the downward pressing assembly can move in the first direction and drive the rotating assembly and the first structure to move, and when the downward pressing assembly is located at a preset position; the flat cable shifting module comprises a shifting part and a cam rod which can move in the second direction at the same time, the shifting part is used for shifting a flat cable located between the first structure and the second structure, and when the downward pressing assembly moves to enable the second structure to move towards the first structure, the downward pressing assembly abuts against the cam rod to enable the cam rod and the shifting part to move away from the flat cable; the shifting piece is moved out of the space between the second structure and the first structure; the limiting module is used for limiting, preventing the flat cable from bouncing off, and guaranteeing the installation stability of the assembly.

A concrete test piece testing device for axial load and freeze-thaw cycle coupling comprises a constant-temperature and constant-humidity box machine internally provided with a concrete load holding device, the concrete load holding device comprises a third base plate, the top of the third base plate is fixedly connected with a spiral column, the spiral column penetrates through a first base plate and is fastened at the top of the first base plate through a nut, and the top of the first base plate is fixedly connected with a second base plate. A concrete test piece to be tested is placed between the third base plate and the first base plate, a second base plate parallel to the third base plate and the first base plate is arranged above the concrete test piece, and a pressure sensor is arranged between the second base plate and the first base plate; a temperature sensor is arranged in the concrete test piece; a telescopic rod is installed on the spiral column in the horizontal direction, and the other end of the telescopic rod is connected with an acoustic emission probe used for being attached to a concrete test piece. The problems that the size of an existing applied load is limited by a spring device, and the pressure change, the change of the internal temperature of a test piece and the real-time damage change cannot be monitored in the test process are solved.

This invention discloses a method, apparatus, and medium for power-on / off testing of a solid-state drive (SSD), applicable to the field of storage technology. The method first acquires the original first data of the SSD under test, then executes a write command to write the corresponding second data to the corresponding test area of ​​the SSD. During the execution of the write command, the SSD under test is powered on and off. After power-on, based on the execution status of the write command, the first data and / or the corresponding second data are used to verify the SSD's status to determine its condition. If the verification result does not meet the verification logic, the SSD is determined to be in an abnormal state. Using the first and second data for verification, and determining the hard drive status based on whether the verification result corresponds to the execution status of the write command, improves the accuracy of the test. In the event of an abnormal power failure, the location of the power failure can be identified based on the verification error location, improving the comprehensiveness of the test.

This utility model discloses an integrated device for testing the number of uses of anti-fog cloth, relating to the field of anti-fog cloth technology. It aims to solve the technical problem of uneven surfactant distribution on the glass sheet caused by full-coverage wiping with anti-fog cloth, resulting in insufficient accuracy of test results. The device includes a housing with a partition in the middle. From left to right, cavities A, B, C, and D are arranged on the front surface of the partition. A wiping mechanism A is arranged in cavity A, and a testing mechanism is arranged in cavity B. This utility model optimizes the design of the bushing and shaft structure. A drive motor drives the bushing to rotate via gear set A, which in turn causes the lower housing B to rotate synchronously. Simultaneously, the meshing transmission of gear set B causes the reciprocating screw to move the wiping plate radially within the housing. This allows the anti-fog cloth to move in a radial spiral trajectory as the housing rotates, achieving comprehensive and uniform wiping of the glass sheet surface and improving the problem of uneven surfactant distribution in traditional wiping methods.

This utility model discloses a gap testing device, including a base with a worktable on it for placing the workpiece to be tested; a vertical support frame mounted on the worktable, on which a helical pressure device is mounted, and an adjustable testing fixture is mounted on the helical pressure device; a tension / compression sensor is installed between the helical pressure device and the adjustable testing fixture; and an axial support plate mounted on the worktable, on which an axial helical pressure device is mounted, and an axially adjustable testing fixture is mounted on the axial helical pressure device; an axial tension / compression sensor is installed between the axial helical pressure device and the axially adjustable testing fixture. The adjustable testing fixture includes a connecting plate with a connecting rod for connecting to the workpiece to be tested. This device features a simple structure, low production cost, and the ability to effectively, conveniently, and practically test the gap of the output shaft of the workpiece.

The application discloses a method for quantifying and distinguishing MSC immunological activity by CD82 and application, collects cells, uses a fluorescently labeled antibody to mark a membrane protein CD82 on a surface of MSC, and uses a flow cytometer to detect a positive rate and MFI of the cell CD82, quantifies the MSC immunological activity by an expression level of the CD82, the immunological activity refers to an inhibition ability of the MSC on secretion of inflammatory cytokines TNF-alpha and IFN-gamma by activated PBMC, meanwhile, the MSC cell group with high immunological activity can be distinguished by detecting the expression level of the CD82 on the MSC, the MSC cell group with high immunological activity screened by using the method shows good curative effect in treating diseases related to inflammation and immunity, the detection method is simple, easy to operate, economical and efficient, and has wide application prospect in a stem cell drug market.

The application discloses a kind of wet heat environment force detection test device of body armor, belong to equipment test technical field.It includes multistage installation device, double-layer overturning barrel, butt joint cover plate, rotary drive device, air temperature control device, friction mechanism, humanoid wearing frame;Double-layer overturning barrel is rotationally installed on mounting bracket;Multistage installation device is installed on mounting bracket, and the movable end of multistage installation device is coaxially arranged with double-layer overturning barrel;Humanoid wearing frame is fixedly connected to the movable end of multistage installation device;Butt joint cover plate is rotationally arranged on multistage installation device;Rotary drive device is fixedly installed on mounting bracket, and the driving end of rotary drive device is drivingly connected with double-layer overturning barrel;Air temperature control device is arranged in the interior of double-layer overturning barrel;Friction mechanism is provided with two, and is respectively installed in the interior of butt joint cover plate and double-layer overturning barrel, and the friction end of friction mechanism is in contact with body armor, and the application can effectively simulate real use environment, improve detection effect.

This invention pertains to sensor detection technology and relates to a MEMS gyroscope testing system. This system is the first to achieve convenient, rapid, and engineered gyroscope testing and data processing. The gyroscope under test is placed in a specially designed test fixture. Different test programs can be selected for different gyroscopes. After power-on, the useful digital signals are acquired and calculated by dedicated software to obtain the gyroscope's performance parameters.

This invention discloses a method and system for testing the aggregate content of coarse aggregates in asphalt mixtures, relating to the field of road engineering. The method includes: obtaining the apparent density and mass of each stone in multiple coarse aggregate samples; calculating the average apparent density and total mass of each coarse aggregate sample based on the apparent density and mass of each stone; determining the aggregate mass of each coarse aggregate sample based on the average apparent density and the apparent density and mass of each stone; and calculating the aggregate content of the coarse aggregate in the asphalt mixture based on the aggregate mass of each coarse aggregate sample and the corresponding total mass of each coarse aggregate sample. This invention can effectively test the aggregate content of different coarse aggregates.

The utility model relates to the technical field of magnetic device testing, in particular to a multi-station magnetic device automatic testing machine which comprises a rack, a feeding conveying device, a testing device, a material taking device and a discharging device, and the feeding conveying device, the testing device, the material taking device and the discharging device are sequentially arranged on the rack. The feeding conveying device is used for feeding magnetic devices, and the material taking device is used for grabbing the magnetic devices from the feeding conveying device, placing the magnetic devices on the testing device for testing and carrying the tested magnetic devices to the discharging device; the material taking device comprises a portal frame, an alternate carrying assembly and a sorting and material taking assembly. The alternate carrying assembly is used for carrying the magnetic devices on the feeding and conveying device and the testing device. According to the utility model, the high-efficiency, accurate and stable testing process of the magnetic device is realized, the product quality and the production efficiency are improved, and remarkable technical advantages and application values are realized.