23results about How to "Test accurate" patented technology

The application relates to the technical field of PCIe devices, and discloses a parameter configuration method and device, a computer device and a storage medium, the method comprising the following steps: setting a plurality of first preset value combinations; configuring preset values of a plurality of PCIe devices according to the first preset value combinations, and performing first testing on the plurality of PCIe devices to obtain first testing results; determining an effective preset value range that can be configured by each PCIe device according to the first testing results; selecting an effective preset value from the effective preset value range corresponding to each PCIe device to form a second preset value combination; configuring preset values of the plurality of PCIe devices according to the second preset value combination, and performing second testing on the plurality of PCIe devices to obtain second testing results; and determining an optimal second preset value combination according to the second testing results corresponding to the plurality of second preset value combinations. The application can determine optimal preset values corresponding to each PCIe device respectively, and can simultaneously ensure the stability of PCIe links of each PCIe device.

A system and method for testing coherent and frequency agility characteristics of a radar echo simulation device, the system comprising: a local oscillator signal generation module for generating a frequency agile local oscillator signal; a signal transmission module for generating a modulated transmit baseband signal; upconverting the modulated signal and transmitting to the device under test, outputting the phase and frequency of the transmit baseband signal to a phase difference calculation module and a frequency difference calculation module; a signal reception module for receiving a signal returned by the device under test, downconverting the received signal based on the frequency agile local oscillator signal to obtain a receive baseband signal, outputting the phase and frequency of the receive baseband signal to the phase difference calculation module and the frequency difference calculation module; a phase difference calculation module for calculating the phase difference between the receive baseband signal and the transmit baseband signal; a frequency difference calculation module for calculating the frequency difference between the receive baseband signal and the transmit baseband signal; a testing module for determining the coherent characteristic and the frequency agility characteristic of the device under test based on a plurality of sets of phase difference values and a plurality of sets of frequency difference values, respectively.

The utility model relates to pipeline tensile test method technical field, and disclose a kind of round pipe tensile fixture, including fixed support rod, the outside rotation of fixed support rod is connected with rotary handle, the outside sliding connection of fixed support rod has fixed support rod, the top fixed connection of fixed support rod has loading mechanism fixed slot, the top sliding connection of fixed support rod has big wedge and small wedge, the inside sliding connection of fixed support rod top has big wedge, the utility model has remarkable advantage, one is simulation real force precision test, through big, small wedge cooperation, can accurately reflect the stress strain in round pipe actual engineering, obtain accurate mechanical property data, two are simple and easy to operate efficient, utilize rotary handle and side handle, adjust fixed support rod position to easily realize round pipe clamping loosening, save test time, three are clamped stable and reliable, wedge automatic gap filling, prevent round pipe skewing sliding.

The present application relates to cable testing device technical field, name is a kind of cable flame resistance testing device, including device frame, vertical rod is installed in the left and right sides of device frame, there is also the fixture of cable installation on cable, when using, the cable is installed on fixture, two fixtures are burning cable area between, lifting cylinder is also installed on device frame, the lifting cylinder has burning groove on top, the burning groove has the burning groove opening on top, the burning groove opening is below between two fixtures;Nut screw motor driven nut screw is also installed on device frame, nut sleeve is also installed around nut screw, connecting rod is also installed on nut sleeve, the other end of connecting rod is also connected with cleaning sleeve, the cleaning sleeve is annular structure. It has the advantages of accurate testing, convenient to use.

The utility model belongs to electrical detection technical field discloses a kind of insulation resistance rapid testing device, it includes box and handle cap, button switch, banana socket, connector and small brush shape switch installed on it;Handle cap is connected together with small brush shape switch, handle cap is installed to the outside of box, and small brush shape switch is installed to the inside of box;Button switch is installed to the outside of box, for switching small brush shape switch;Banana socket is installed to the outside of box, and it is insulation table needle insertion end;Connector is installed to the outside of box, and is connected with the measured product test end connection.The utility model is connected together by box handle cap, button switch, banana socket, connector and small brush shape switch, connect each terminal by wire according to circuit schematic diagram, after insulation table and measured product are connected with insulation resistance testing device, the test of insulation resistance can be realized quickly, accurately and safely, it is simple and safe to operate, and it can be widely applied to the insulation resistance test of various electrical products.

The utility model discloses a kind of fuel tank strength testing devices, belong to strength test field. Including clamping assembly, the clamping assembly includes frame base, limit strip is installed on two side edge positions of frame base, positioning part is installed between two groups of limit strip, clamping part is installed between two groups of limit strip, drive part is provided at the bottom of frame base;Test component, test component is used to impact test to the side edge of fuel tank;Limiting component, limiting component includes the shielding part for covering test area, fixed part is installed on the shielding part for clamping fuel tank, and the pressing part for pressing fuel tank is connected on the shielding part. A kind of fuel tank strength testing device of the application, by clamping, test, limiting component cooperation, positioning part is firmly clamped fuel tank from multidirectional, test component controls impact parameter, all-around limit displacement, impact point precision is kept, data accuracy is proposed.

The application discloses a kind of flexible multifunctional detection rack, including rack main body, the upper end of rack main body is positioned and installed with pedestal, the front end of pedestal is provided with first display and second display, test table is installed on rack main body, jig quick-change positioning device is arranged in the middle of test table, printer is installed in the side of test table, controller is installed in the front end of test table, flexible electrical control system is positioned in the inside of rack main body, cabinet is arranged in the inside of rack main body in front position, ammeter, voltmeter and industrial computer are arranged in the inside of cabinet.The flexible multifunctional detection rack can accurately and reliably test various products produced by it to ensure the accuracy and stability of the products in various actual application scenarios, which not only can improve the product quality and market competitiveness of enterprises, but also can provide more accurate and reliable products for users.

This application relates to the field of display technology, specifically providing a flexible display panel, an electronic device, and a method for detecting cracks and delamination. The flexible display panel includes a substrate, a display functional layer, and a touch functional layer stacked along the thickness direction of the panel. The flexible display panel also includes at least one panel crack detection trace. The display functional layer includes a gate insulating layer, and the panel crack detection trace is disposed above the gate insulating layer along the thickness direction. Compared to existing technologies, this application, by placing the PCD trace above the gate insulating layer, allows the PCD trace to be closer to the light-emitting layer of the flexible display panel. This enables more accurate and effective interception of defective panels with microcracks and delamination during testing, improving the detection sensitivity for micro-damage.

The utility model relates to test device technical field, and disclose a kind of testing device for rubber sealing element production, including test box, water pump and air heater.Test box top plate lower surface installs cylinder, its output end installs sealing plate, and there is test seat in test box inner chamber middle part, cylinder can drive sealing plate to lift, can flexibly adjust and test seat cooperation state, satisfy different extrusion test demand.Water pump is located on test box inner chamber baffle upper surface, water outlet is communicated with the inside of sealing plate through delivery pipe, cooperate the pressure sensor and data acquisition module on the upper surface of sealing plate, can real-time acquisition monitoring water pressure data, provide basis for quality detection.Air heater is located at test box air inlet, and air outlet is connected heating frame through gas pipe, can heat the air entering test box, provide different temperature environment, expand test range, and sealing plate cooperation can more accurately test rubber sealing element quality.

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

The embodiment of the application provides an MTF testing method and device for an AR projection light machine, comprising: acquiring a projection test target, wherein the projection test target is a cross slit bright line; collecting a test projection image corresponding to the projection test target; based on the test projection image, scanning along the direction perpendicular to the extension direction of each bright line in the cross slit bright line respectively, and determining the brightness data of each corresponding scanning position; performing brightness feature extraction on the brightness data of each corresponding scanning position to obtain an effective brightness data sequence; based on the effective brightness data sequence, constructing a line spread function; and based on the line spread function, determining a test result. Through the cross slit bright line test target combined with directional scanning, brightness feature extraction and line spread function construction, the imaging quality of the AR projection light machine is accurately tested, and the reliability and applicability of the test result are improved.

The utility model discloses a kind of circuit board testing equipment with four-line clamp quick clamping device, it is related to circuit board testing equipment technical field, including base, base upper portion is fixedly connected with testing equipment main body, and base upper portion is fixedly connected with clamping mechanism and support mechanism, support mechanism is located below clamping mechanism.The utility model, by handle, connecting shaft, the clamping mechanism of one spring etc., realize the quick clamping and release of circuit board, and the fixed circuit board pin foot of pressing end can be made by pulling handle, reverse pulling cooperation one spring can quickly unfasten clamping, the fixed end of support mechanism and pressing end accurate alignment, limit plate ensures that pressing frame moves stably, guarantee positioning accuracy, one spring provides elastic buffer, guarantee the clamping force of pressing end to different thickness circuit board is even, avoid bad contact and circuit board deformation.

The application belongs to the field of aviation compressor rotating disc, and particularly relates to a wind resistance test method for a compressor rotating disc. The method comprises the following steps: step one, obtaining different test pieces; step two, determining a gas supply mode, and performing wind resistance test on each test piece under the corresponding gas supply mode to measure wind resistance torque of a rotating-static surface and / or a rotating-rotating surface; and step three, calculating wind resistance torque of a compressor inlet disc cavity surface by using a method of adding, subtracting and eliminating. The wind resistance test method for the compressor rotating disc prepares different test pieces, performs wind resistance test on the test pieces under different gas supply modes, and finally obtains wind resistance torque of the compressor inlet disc cavity surface by using the method of adding, subtracting and eliminating. The method solves the technical problem that the traditional method cannot measure wind resistance of a specific surface alone, and has the remarkable advantages of more accurate test and relatively small cost.

This invention relates to the field of hydraulic gate hoist testing technology and discloses a hydraulic gate hoist testing device, including a base. A clearance hole is provided on one side of the base. Auxiliary feeding components for transporting the hydraulic gate hoist onto the base are provided between the inner walls of both sides of the clearance hole and on one side of the base. A clamping component for fixing the hydraulic gate hoist is provided between the two auxiliary feeding components. A testing component for functional testing of the hydraulic gate hoist is provided on the top of the base. A function conversion component for changing the test items of the testing component is provided on one side of the testing component, integrating the two tests into one unit. This reduces the space occupied by the device and eliminates the need to move the hydraulic gate hoist during testing, improving the convenience of device testing. By providing auxiliary feeding components to transport the hydraulic gate hoist onto the device, the time and height required for moving the hydraulic gate hoist are reduced, making loading easier for workers and improving the labor-saving effect of the device.

The application provides a meat fixing device for meat detection and a detection method, which comprises a box body and a box cover, the top of the box body is matched with the box cover, further comprises a U-shaped plate, an adjusting device, a transmission device, a fixing mechanism, a heating plate, a display screen, a detection device, a placing device, an infrared heating lamp, a circular hole and a fixing ring, the surface of the box body is fixedly connected with the U-shaped plate, the surface of the U-shaped plate is fixedly connected with the adjusting device, the adjusting device is rotationally installed with the box body, the surface of the box body is provided with the transmission device, the transmission device is fixedly connected with the adjusting device, the transmission device is fixedly connected with the box cover, the lower surface of the box cover is fixedly connected with the fixing mechanism, and the inner wall of the box body is fixedly connected with the fixing ring, the application can accurately detect the moisture in the detected sample of meat, has simple structure and high practicability.

The embodiment of the present disclosure provides a software function testing method and device, the method comprises the following steps: classifying software functions of a software to be tested according to the software functions; obtaining test results of testing each type of software function respectively; determining whether the test results match corresponding predicted judgment results set, if yes, determining that the software function corresponding to the software to be tested is normal; otherwise, determining that the software function corresponding to the software to be tested is abnormal. The method can test the software quickly, comprehensively and accurately under the premise of low cost.

The utility model discloses an integrated circuit chip welding strength testing arrangement belongs to welding strength test field, including base, is provided with clamping mechanism on the base, and the vertical board is installed with moving mechanism, and moving mechanism includes moving frame and plane adjusting assembly, and moving frame swing setting is in the top of base, and the movable block is swing setting on moving frame, and is provided with the pressing mechanism on movable block. Advantageous effect lies in: setting the pressing mechanism and test mechanism, through the nested setting of no. The pressure pipe, no. 2 pressure pipe and pressure rod can change the area of the circuit chip welding point position, so as to cope with different strength test requirements, reach more accurate test result, and through the setting of clamping mechanism can adapt to different size integrated circuit chip, through the setting of moving mechanism can make test mechanism move on the horizontal plane, and accurately align the strength test of welding point position.

The application relates to a testing device for a pneumatic brake light switch, comprising a control chip, a pneumatic controller, a pneumatic simulation test table, a pneumatic collector and a load indicator; the control chip is connected with the pneumatic controller, the pneumatic collector and the load indicator, a to-be-tested pneumatic brake light switch is arranged in the pneumatic simulation test table, and the to-be-tested pneumatic brake light switch is connected with the load indicator. In the application, the control chip controls the pneumatic pressure of the pneumatic simulation test table through the pneumatic controller, if the pneumatic pressure meets the requirement, the to-be-tested pneumatic brake light switch in the pneumatic simulation test table is in a closed state, the load indicator is lighted, the controller collects the response time of the to-be-tested pneumatic brake light switch, and the accurate testing of the on-off life of the to-be-tested pneumatic brake light switch is realized; and the scheme is simple in operation, can realize the automatic testing of the pneumatic brake light switch, and improves the testing efficiency of the pneumatic brake light switch.

This disclosure provides a distributed database testing method, related apparatus, and medium. The method includes: determining the initial configuration state of the distributed database as the current configuration state; acquiring multiple test cases; executing the multiple test cases in the distributed database under the current configuration state, and after the test cases are executed, setting the call status flag of the underlying logic block called by the test cases to a first status value; adjusting the configuration parameters of the distributed database to update the current configuration state, updating the multiple test cases, and returning to the steps of executing the multiple test cases in the distributed database under the current configuration state, until the number of underlying logic blocks whose call status flags are set to the first status value reaches a predetermined condition. This disclosure improves the coverage of distributed database testing and more accurately detects vulnerabilities in the distributed database. This disclosure can be applied to distributed database testing scenarios.

The application discloses a double-color injection molding adhesion force test tool and system, and relates to the technical field of double-color injection molding adhesion force test tools. The double-color injection molding adhesion force test tool comprises a base, a test panel arranged on the base, and two fixing assemblies. The test panel is used for supporting a test piece. The two fixing assemblies are arranged on the test panel and can fix the test piece on the test panel. At least one fixing assembly is movably connected to the test panel. The application discloses a double-color injection molding adhesion force test tool and system, and solves the problem of unsatisfactory double-color injection molding adhesion force test effect.

The present application relates to the technical field of anti-fog, in particular to a kind of testing device for fog resistance of anti-fog agent.The testing device comprises cold and hot environment box, windshield test piece and refrigeration and heating device for controlling the internal temperature of cold and hot environment box to rise or fall, and the cold and hot environment box is provided with opening for installing windshield test piece;The box body of cold and hot environment box is sandwich glass structure, and the inside of sandwich glass structure is provided with heat insulation film layer.The purpose of the testing device for fog resistance of anti-fog agent is to solve the problem that existing test method cannot simulate the cold and hot cycle of windshield surface anti-fog agent.

This invention discloses a method and system for testing the braking energy recovery performance of new energy vehicles, relating to the field of light vehicle performance testing technology. The method includes: constructing a test platform comprising an environmental chamber and a four-wheel drive drum system; fixing the test vehicle onto the four-wheel drive drum of the test platform and connecting it to a power analyzer; configuring environmental chamber parameters according to preset regulatory conditions and loading a drum resistance curve into the four-wheel drive drum system; conducting braking energy recovery tests under different brake pedal openings; and simultaneously collecting multi-source voltage and current data from the test vehicle's power battery, 12V small battery, and the drum during the test; calculating the total energy consumption and braking energy recovery under different operating conditions based on the multi-source voltage and current data, calculating the recovery efficiency, and compiling a braking energy recovery strategy MAP. This invention does not rely on CAN bus decoding and can achieve accurate and efficient testing of braking energy recovery performance.

This invention provides a method for determining the mass and purity of silver in ceramic cups with a silver layer on the inner wall, belonging to the field of precious metal analysis and detection technology. Addressing the technical problems of existing physical methods being unable to remove the silver layer and chemical methods being affected by bismuth interference from the ceramic matrix in purity determination, this invention uses silver-free ceramic cups from the same batch as a specific blank control. The silver-layered sample and the blank sample are simultaneously digested using an optimized ratio of nitric acid solution under specific temperature and time conditions. The mass of silver is accurately determined by ammonium thiocyanate titration, and the impurity concentrations in the sample and blank solutions are determined separately by spectroscopic methods. Background interference such as bismuth dissolved from the ceramic is accurately subtracted using a difference method, and the silver purity is finally calculated through normalization. This method enables continuous and accurate determination of silver mass and purity with a single sample dissolution, effectively solving the problem of interference from complex matrices, significantly improving the precision and accuracy of detection, and providing a feasible technical solution for the quality inspection of silver-layered ceramic products.