37results about How to "Improve test stability" patented technology

This utility model discloses a resistive touchscreen pressure testing device, relating to the field of touchscreen technology. It includes a base with a sliding groove; a sliding block located within the sliding groove, a support seat fixed to the sliding block, a support block fixed to the bottom of the support seat, a positioning block fixed to the base, and an electric telescopic rod mounted on the positioning block, the distal end of which is fixed to the support block; and a testing component. This utility model, through its designed testing component, ensures that when the control motor starts, the output shaft of the control motor drives the rocker arm to rotate, causing the rotating rod to move with the rocker arm's rotation, thereby driving the guide post to perform linear reciprocating motion within the sliding hole. Unlike traditional pressure testing devices, this ensures that during the pressure testing process, regardless of the applied pressure or precise pressure adjustment, it can be monitored in real time by the pressure sensor, truly achieving accurate pressure testing of the resistive touchscreen and greatly improving the pressure testing effect.

The application provides a method for determining the type of defects in a single crystal silicon wafer, comprising the following steps: measuring the particles in the As-Grown state silicon wafer by LST to obtain a first measurement result, and determining a V-rich region according to the first measurement result and a first preset density value; and performing heat treatment on the silicon wafer, and again measuring the particles in the silicon wafer by LST to obtain a second measurement result, and determining a Pv region, an I-rich region and a Pi region according to the second measurement result, a second preset density value and a third preset density value, so as to accurately and effectively distinguish the four region types of the V-rich region, the Pv region, the Pi region and the I-rich region in the single crystal silicon wafer by using the particle density, the test result is obviously distinguished, the test stability is high and the repeatability is high, and the requirement of the defect partition type on the silicon wafer is reduced.

The conductive light shield for a probe station of the present invention for cable connection pin clips includes a conductive shield body and a light-absorbing layer. The conductive shield body covers the outside of the pin clip on the probe station. The conductive shield body includes a top wall and side walls extending downwards from the edge of the top wall, with one end of the side wall away from the top wall contacting the probe station. The conductive shield body provides electrostatic shielding and optical protection, ensuring that the pin clip is protected from electrostatic discharge and stray light interference during testing, thereby improving testing accuracy and stability. Cable openings are provided on the side walls to accommodate the cable layout between the pin clip and the testing machine, ensuring that the cable can pass smoothly and maintain a normal connection with the testing system. The light-absorbing layer is disposed on the surface of the conductive shield body. The organic carbon black coating has good light absorption properties and can effectively absorb stray light from the environment, reducing interference from light reflection on the optical alignment system.

The invention relates to the technical field of on-line testing of light emitting diode production and manufacturing, and provides an LED testing circuit and a testing method thereof. The method comprises the following steps: providing a test power supply for a to-be-tested plate provided with a to-be-tested multicolor light emitting diode, and lightening light emitting diode lamps with different colors on the to-be-tested plate one by one according to a preset color; after a light emitting diode with a color to be detected is turned on every time, three paths of light sensing parameters of current light emitting are collected through a light sensing sensor, the three paths of light sensing parameters are compared, and the color actually emitted by the current light emitting diode is determined according to a preset color judgment logic and the size relation of the three paths of light sensing parameters; comparing the actually judged color with the currently-lightened preset color, if the color is consistent with the currently-lightened preset color, judging that the light-emitting diode works normally, and if the color is not consistent with the currently-lightened preset color, judging that the light-emitting diode works abnormally; and testing of all the to-be-detected color light emitting diodes is completed successively, and a final LED testing result is obtained.

This application relates to the field of online testing technology for LED manufacturing, and provides an LED testing circuit and its testing method. The method includes: providing a test power supply to a test board on which multi-color LEDs are mounted; sequentially illuminating LEDs of different colors on the test board according to preset colors; after illuminating each LED of a specific color, collecting three photosensitive parameters of the current emission through a photosensitive sensor, comparing the magnitudes of the three photosensitive parameters, and determining the actual color emitted by the LED based on the relationship between the magnitudes of the three photosensitive parameters according to a preset color determination logic; comparing the actual determined color with the currently illuminated preset color; if they match, the LED is determined to be working normally; if they do not match, it is determined to be malfunctioning; and sequentially completing the testing of all LEDs of the colors to be tested to obtain the final LED test result.

The invention discloses a phase noise measurement method and system based on a frequency spectrograph, and relates to the technical field of communication measurement instruments and meters, and the method comprises the steps: obtaining ADC data, carrying out the digital down-conversion and decimation filtering of the ADC data, obtaining IQ baseband data, carrying out the digital phase demodulation of the IQ baseband data, and obtaining phase change data; performing frequency difference estimation on the phase change data to obtain a frequency difference estimation result, and performing frequency difference compensation on the phase change data to obtain compensated phase change data; extracting the compensated phase change data to obtain phase fluctuation data, and performing FFT (Fast Fourier Transform) operation to obtain phase noise original data; carrying out self frequency mixing operation on the IQ baseband data to obtain amplitude modulation noise original data; and performing spectrum estimation processing on the phase noise original data and the amplitude modulation noise original data, and then performing stray elimination and smoothing processing to obtain a final phase noise measurement value and an amplitude modulation noise measurement value.

The utility model provides a pressure testing mechanism for a touch screen, which comprises a working table, a left supporting seat and a right supporting seat are connected on the working table in a sliding manner, a tool plate is connected between the left supporting seat and the right supporting seat in a sliding manner, a positioning groove for placing the touch screen is formed in the tool plate, a pressing plate is arranged above the tool plate, and the pressing plate is connected with the left supporting seat and the right supporting seat in a sliding manner. The pressing plate is connected to the lower side face of the hydraulic cylinder, the hydraulic cylinder is fixedly installed on the support, the support is fixedly installed on the rear side of the workbench, the pressure detection sensor is installed in the middle of the lower side face of the pressing plate and connected with the controller through a wire, the controller is connected with the display screen through a wire, and the controller is arranged in the display screen. The display screen is fixedly installed at the front end of the support. According to the utility model, the touch screens of different specifications can be stably placed, so that the pressure test can be carried out on the touch screens of different specifications, and the test stability is high.

The invention relates to the field of civil aviation, and discloses an emergency slide lifeboat gas cylinder function test filling platform which comprises a first support, a fence net is fixedly connected to the inner side of the first support, a self-adaptive mechanism is arranged on the inner side of the first support, and the self-adaptive mechanism is used for fixing gas tanks of different sizes. An automatic mechanism is arranged on the outer side of the fence net and used for automatically transporting the gas tank. Stable support is provided through the triangular frame, a rotating roller guides a steel belt to stably transmit power, a fixed block positioning air cylinder connected to the steel belt, the air cylinder drives an inner plate to vertically move, sliding fit of an outer plate and the inner plate is combined with guiding of a rail plate, horizontal displacement of the air cylinder is achieved, and finally two moving clamps are matched with a buffer spring to cooperatively act. When the gas tank is clamped and transferred, the impact load is effectively absorbed, the gas tank is protected against damage, and automatic carrying of the gas tank is achieved.

This invention discloses a multi-position independently controllable device and method for testing the lifespan of buttons in household appliances. The device includes a movable base, a dual-rotation support mechanism, a lifting adjustment unit, and a multi-cylinder independent testing unit. The dual-rotation structure allows for 180° forward / backward and 90° left / right posture adjustment, with a lifting stroke of 75mm~530mm. Each cylinder is independently equipped with a pressure regulating valve, a solenoid valve, and a counting unit, allowing for individual adjustment of force, frequency, and counting. The power supply system is independently isolated. The method employs upright product clamping, multi-position alignment, and parallel testing of multiple buttons; a single button failure does not affect the overall operation. This invention eliminates the need for inverting the product, realistically simulates usage posture, has a wide range of applications, allows for rapid product changeover, and offers high testing accuracy and efficiency, making it suitable for button lifespan testing in various household appliances.

This application relates to the field of insulation testing and discloses an insulation testing connection device and an insulation testing system. The insulation testing connection device includes a housing, a switch assembly, a control assembly, and a power supply assembly. The housing includes a wall and a first chamber and a second chamber formed by the wall. The wall includes terminals for the device under test and terminals for the testing instrument. The switch assembly is located in the second chamber and connected between the terminals for the device under test and the testing instrument, used to control the on / off state of the terminals for the device under test and the testing instrument. The control assembly is located in the first chamber and connected to the switch assembly. This solution addresses the problems of complex operation and susceptibility to errors. By setting the control assembly to control the on / off state of the switch assembly, and thus controlling the on / off state of the terminals for the device under test and the testing instrument, selective testing between the device under test and the testing instrument is performed without the need for repeated plugging and unplugging, simplifying operation.

The utility model belongs to noise detection technical field, specifically disclose an improved wind power noise test is with noise signal collection equipment, including sound level meter and wireless device, wireless device includes the equipment cabinet that lies on the ground, is equipped with antenna mast structure on the equipment cabinet, is equipped with antenna support on antenna mast structure, has fixed structure on antenna mast structure, fixed structure includes the eye -splicing, the eye -splicing is fixed on the ground through the wind rope of inclination setting and the ground peg of wind rope bottom end, and the ground peg is symmetrically set up in the periphery of equipment cabinet, antenna support includes the connecting seat that sets up in the top of antenna mast structure, the lateral rod that is symmetrically set up with both sides of connecting seat, the lateral rod end is connected with the antenna through detachable structure, the top clearance of connecting seat is equipped with LED lamp and photosensitive switch.

This utility model discloses a test probe module, including a housing, a test section and a mounting section arranged axially; a plurality of test probes, detachably mounted in the test section and the mounting section, with their two ends extending to the outer sides of the test section and the mounting section respectively; the outer wall of the mounting section is provided with at least one pair of positioning structures to facilitate the installation of the test probe module onto a fixture. Compared with the prior art, the test probe module claimed in this application, through the centrally symmetrically arranged positioning structures, achieves non-directional installation of the module, allowing for rapid alignment with the fixture without distinguishing between front and back directions, significantly reducing the installation error rate, while also reducing the complexity of the fixture's positioning reference and adapting to more types of test fixtures.

The utility model discloses a network card converter with a metal shielding layer, and relates to the technical field of network card converters. The network card converter with the metal shielding layer comprises a first shell, a second shell, a circuit board structure, a metal shielding ring, a positioning plate, a butt joint seat and a locking unit. According to the network card converter with the metal shielding layer, through the design of the first shell, the second shell, the circuit board structure, the metal shielding ring, the positioning plate, the butt-joint seat and the locking unit, the first shell and the second shell are convenient to mount and butt-joint through the assembly locking structure of the positioning plate, the butt-joint seat and the locking unit; and meanwhile, the metal shielding ring is convenient to assemble, the circuit board structure is prevented from being interfered by external electromagnetic interference by utilizing the metal shielding ring, so that the test stability of the circuit board structure in the research and development process is good, the operation is convenient, and the use requirement is met.

The invention relates to the technical field of pressure sensor testing, in particular to an omnidirectional automatic testing device applied to a pressure sensor, which comprises a main frame. According to the omni-directional automatic testing device applied to the pressure sensor, full-automatic operation of testing of the pressure sensor is achieved, automatic feeding, clamping positioning and discharging sorting of the sensor are completed through cooperation of the longitudinally-arranged feeding pipe, the guide control frame controlled by the electric control lead screw and the classified discharging channel, manual intervention is not needed in the whole process, and the testing efficiency is improved. The test efficiency is greatly improved, meanwhile, errors caused by manual operation are avoided, and the test consistency is ensured; the all-directional pressure measuring module has the all-directional multi-dimensional pressure measuring capacity, the detachable all-directional pressure measuring module comprises multiple sets of annular detection heads, pressure testing of different angles and different areas can be carried out on the pressure sensors, the all-performance detection requirements of various pressure sensors are met, and the detection heads are detachable, convenient to replace and maintain and suitable for testing of sensors of different specifications.

The utility model discloses a cast aluminium rotor broken strip testing arrangement belongs to testing technical field, including test platform, cast aluminium rotor broken strip testing arrangement still includes test subassembly and drive assembly, and test subassembly is located with drive assembly in test platform, and test platform includes workbench surface, and test subassembly and drive assembly are located workbench surface upper and lower two sides respectively, and test subassembly includes positioning subassembly, detection subassembly and clamping assembly, and the plane of clamping assembly is perpendicular to the plane of workbench surface, and rotor is located in clamping assembly, and detection subassembly is located one side of clamping assembly, and the plane of clamping assembly is perpendicular with the plane of positioning subassembly each other. The gravity direction is consistent with rotor axial direction through the vertical arrangement of clamping assembly in test platform, and rotor is naturally drooping under the action of gravity, and reduces the additional eccentricity or sway of the gravity, and compared with horizontal arrangement, can reduce the rotor unbalance influence of the factor such as installation, improves test stability.

The invention discloses a device and a method for testing dissolved oxygen and ozone isotopes in water, and belongs to the field of gas stable isotope analysis and testing. Comprising a constant-pressure constant-current automatic sampling device and a gas sampling system, a certain volume of water sample in a sealed sample bottle is removed by using the constant-pressure constant-flow automatic sampling device for dissolved oxygen in water, the water sample is placed in the constant-temperature balance oscillation device for balancing, back flushing of a gas circuit is realized by using the gas sampling system, the influence of residual gas is eliminated, and then the sample is collected and purified. Purified gas passes through a multi-channel gas path switching system, separated oxygen is loaded into a gas stable isotope mass spectrometer, oxygen isotopes of dissolved oxygen are detected, and therefore automatic pretreatment of the dissolved oxygen in water and accurate testing of the three oxygen isotopes of the dissolved oxygen are achieved. According to the method, full-automatic operation is realized, man-made interference and air pollution are effectively avoided, and the detection precision and efficiency are remarkably improved.

The utility model relates to the technical field of automatic burning test machines, in particular to an automatic burning test machine of a wireless charging chip. Comprising an automatic burning testing machine body, four foot pads are installed on one side of the automatic burning testing machine body, an adjusting device is arranged at one end of the automatic burning testing machine body and comprises a supporting plate, the supporting plate is fixedly connected with the automatic burning testing machine body, a motor is fixedly connected to one side of the supporting plate, and the supporting plate is fixedly connected with the automatic burning testing machine body. The output end of the motor is fixedly connected with a rotating disc. The automatic burning test machine for the wireless charging chip has the advantages that when the automatic burning test machine is used for testing the wireless charging chip, the automatic burning test machine has an automatic feeding function through the adjusting device, so that the testing stability of the automatic burning test machine can be improved through the adjusting device, and the testing efficiency is improved. And the overall quality and the consistency of the wireless charging chip are further improved.

The application discloses a walk-in type rapid temperature change laboratory, which comprises a test chamber, a test rack and a ring-shaped clamp unit which is spliced by at least two arc-shaped clamp units and is arranged on the test rack. The arc-shaped clamp unit comprises an arc-shaped fixed ring segment, a floating clamping petal and a zero-stiffness beam group. A positive stiffness beam in the zero-stiffness beam group provides basic elasticity, and a negative stiffness beam generates a negative stiffness response through reverse bending when the floating clamping petal is radially displaced, so as to offset part of the force increment of the positive stiffness beam. The application passively adapts to thermal expansion and contraction of a tubular workpiece by using a pure mechanical structure, keeps the clamping force constant under severe temperature change, avoids deformation of the workpiece due to over-clamping or loosening of the workpiece due to cold contraction, and is convenient to disassemble and assemble in situ due to the split structure.

This utility model relates to the field of testing device technology and discloses a release film peel force testing device, including a support platform. A support frame is fixedly installed at the front of the top of the support platform. A rotating plate is rotatably installed at the top of the support frame via a rotating rod. The rotating plate is provided with several fixed frames, and an electric telescopic rod is installed on both sides of the fixed frames. A peeling component is provided at the rear of the top of the support platform. The peeling component has a rotating frame and a movable frame. The rotating frame is rotatably installed at the front end of the movable frame. Through the peeling component, the initial clamping position of the rotating frame can be adjusted, so that the release film can be pulled horizontally or from back to front. At the same time, the release film can be pulled from different angles, which provides high flexibility and reduces the probability of film movement during release film peeling, thus improving test stability. It can test the adhesion strength of the release film to surfaces at different temperatures.

The utility model discloses a frameless motor testing tool, and particularly relates to the technical field of motor testing, which comprises a base, the top end of the base is fixedly connected with a support frame, the front side of the support frame is provided with a motor stator, the inner side of the motor stator is provided with a motor rotor, the front side of the support frame is provided with a limiting assembly, and an auxiliary mechanism is arranged above the base; the limiting assembly comprises a fixed column, a plurality of first guide grooves are formed in the fixed column, guide columns are slidably connected into the first guide grooves, one ends of the guide columns are fixedly connected with movable columns, and threaded rods are in threaded connection with the interiors of the movable columns. According to the utility model, by arranging the limiting assembly and the auxiliary mechanism, a rigid supporting structure can be formed on the inner side of the motor rotor, displacement caused by centrifugal force or torque fluctuation in the testing process is reduced, and the motor rotor can be kept stable in the testing process; and meanwhile, centrifugal force or vibration generated by uneven mass distribution of the motor stator during high-speed rotation can be reduced, so that the test precision is improved.

The utility model discloses a surface microstructure rotary viscometer rotor for testing a modifier. The surface microstructure rotary viscometer rotor comprises a connecting rod, a rotor body, a surface microstructure layer and an auxiliary stabilizing ring, the connecting rod is used for being connected with a viscometer host, the rotor body is of a cylindrical or conical structure, and a surface microstructure layer is arranged on the outer surface of the rotor body and used for enhancing shear interface coupling with a modifier; the auxiliary stabilizing ring is arranged at the middle part or the lower part of the rotor body and is used for improving the attitude stability in the test process. The structure is helpful for improving the accuracy and repeatability of the rheological test of the modifier, and is suitable for testing a material system with a complex shearing behavior.

The utility model relates to the technical field of connectors, and discloses a plugging test device and a connector test system, and the plugging test device comprises a mobile platform, a connecting assembly, and a bearing platform. The mobile platform is provided with a plug-in port; the connecting assembly comprises a first elastic piece and a plurality of guide assemblies; one end of the first elastic piece is connected with the mobile platform, and the other end is connected with the bearing platform; each guide assembly comprises a guide column and a swing connecting piece, the swing connecting piece is arranged on the bearing platform and is fixedly connected with the bearing platform, and the end part of the guide column is magnetically connected with the mobile platform. The test board drives the mobile platform to swing, and when the mobile platform swings to a certain amplitude, the mobile platform automatically loosens, so that the test board is separated from the external plug connector, and the test device is effectively prevented from being damaged.

This invention discloses an elevator control method based on duty cycle, comprising the following steps: the elevator initiates random operation according to a set number of runs and a duty cycle; after the elevator completes one running cycle, the actual duty cycle of the elevator is calculated and compared with a set value. If the actual duty cycle is not greater than the set value, the next running cycle is directly initiated; if the actual duty cycle is greater than the set value, the elevator's delay time is calculated and the elevator is controlled to standby for the specified delay time before the next running cycle is initiated. After completing the set number of running cycles according to the above steps, the random operation ends. This invention can adjust the duty cycle of the elevator during random operation, thereby improving the testing effect of the elevator and preventing abnormal wear and tear.

This invention relates to a testing system for a micro-ring modulator optical chip, belonging to the field of optical chip testing technology. The system includes: a test sub-board, a control main board, an optical path coupling device, and an output device. The test sub-board receives multi-mode test signals from the control main board to test the optical chip. The test sub-board adjusts the temperature and phase shifter current of the optical chip under test. The output device collects the optical signal output under optical path coupling, and outputs a three-dimensional data lookup table containing the collected optical signal, its temperature, and phase shifter current data. The optical path coupling device couples the optical chip to the test optical signal and monitors the change in optical power in the optical chip's loopback waveguide during coupling to adjust the coupling optical path to the optimal coupling state. This invention improves testing efficiency, supports multi-chip parallel testing and closed-loop optical coupling optimization, achieving rapid resonant wavelength and operating point locking for the optical chip, and efficient batch testing.

This application discloses an in-situ battery device, comprising a first housing, a second housing, and a battery body. The first housing has a window, the second housing is connected to the first housing, and the battery body is disposed between the first and second housings and seals the window. This application's technical solution uses the battery body itself to seal the window, eliminating the need for a beryllium window. This simplifies the structure, avoids the corrosion of the beryllium window by the electrolyte, ensures the sealing performance of the in-situ battery device, and helps improve the stability and accuracy of testing the in-situ battery device.

The utility model discloses a wind driven generator frequency converter grid connection simulation test board relates to frequency converter grid connection simulation test board technical field, and its technical key points include frame, the top surface mounting of frame has testing appearance, the outside installation of testing appearance has interface group, the bottom surface mounting of frame has removal subassembly, the utility model discloses when using, realized through adjustable shock absorber subassembly and interval adjusting mechanism, and the damping spring pre -tensioning force can be adjusted to rotate the rocker, and the matching hydraulic adjustable damper can adapt to different weight frequency converter, avoid the problem that high -power model vibration causes wiring loose, low -power model low -frequency vibration is difficult to absorb, and the convenient movement and stable fixation of test board are realized relying on removal subassembly, and different size frequency converter is clamped quickly and stably with the help of V -shaped clamping cover and second electric push rod, and the vibration is monitored in real time in combination with piezoelectric acceleration sensor, guarantees the accurate test data, reduces the equipment loss, and improves test stability and efficiency.

This invention belongs to the field of water-cooled server testing technology and discloses a multi-channel test bench, including a test bench with a panel fixedly connected to the upper front end. Several mounting brackets are fixedly connected to the rear end of the panel. External ball valves are fixedly connected to the upper and lower front ends of the mounting brackets. An input port and an output port are fixedly connected to the middle of the mounting brackets, respectively. U-shaped pipes are connected between the external ball valves and the input port and between the external ball valves and the output port. A connecting pipe is connected to the rear end of the lower external ball valve. A three-way connector is connected to the rear end of the upper external ball valve and the other end of the connecting pipe. A thermometer is connected to the outer surface of the three-way connector. A three-way sensing valve is connected to the third end of the three-way connector. A flow valve and a filter are sequentially connected to the bottom end of the lower three-way sensing valve. Stainless steel ball valves are fixedly connected to the top end of the upper three-way sensing valve and the bottom end of the filter. This invention solves the problems of existing test benches requiring individual testing and incomplete testing functions.

This utility model relates to a crimping device and a testing system. The crimping device is used to crimp copper busbars onto the terminals of a module under test. It includes: a substrate capable of moving up and down relative to the module under test; and multiple crimping components disposed on the substrate and arranged corresponding to the terminals of the module under test. Each crimping component includes a crimping member and a first elastic member. The crimping member is located at the bottom of the substrate and is capable of moving up and down relative to the substrate. The two ends of the first elastic member abut against the substrate and the corresponding crimping member, respectively. The crimping member can crimp the copper busbars onto the corresponding terminals of the module under test, enabling simultaneous testing of multiple terminals of the module under test. The first elastic member can absorb planar errors and act as a buffer, solving the problem of poor contact between the crimping member, the copper busbar, and the terminals. This ensures that the copper busbars are crimped smoothly and firmly onto each terminal, avoiding safety hazards such as localized high temperatures, oxidation, or even melting. This improves the compatibility and testing stability of the crimping device.