38results about How to "Avoid inaccurate testing" patented technology

The invention relates to the technical field of high-temperature grid bias tests, and discloses a high-temperature grid bias test method of a SiC MOSFET device, a computer device and a storage medium. When electrical parameter tests are carried out on the SiC MOSFET device in different test nodes for carrying out the high-temperature grid bias test on the SiC MOSFET device, if the measurement of the SiC MOSFET device is not completed in time, stress interruption time of the SiC MOSFET device can be evaluated, extra stress application time of the SiC MOSFET device can be obtained according to a pre-obtained function relation between a threshold voltage drift change rate of the SiC MOSFET device and the stress interruption time and the extra stress application time after interruption, the bias stress of the extra stress application time is applied to the SiC MOSFET device, so that after a threshold voltage on the SiC MOSFET device is recovered to a preset threshold value, and the SiC MOSFET device is measured in time, thereby guaranteeing that the measured threshold voltage can represent the real drift condition of the SiC MOSFET device at the moment.

The invention relates to the field of motor performance testing, in particular to a motor performance testing device with a torsion adjusting function. The invention solves the technical problems that the torque load cannot be changed, and the measured data is less, so that the problems of the motor cannot be found in time, and the unqualified motor leaves the factory. According to the technical scheme, the motor performance testing device with the torsion adjusting function comprises a supporting plate, a first fixing strip, a first fixing plate, a fixing mechanism and the like; and first fixing strips are fixedly connected to the front and rear portions of the right side of the upper surface of the supporting plate, a first fixing plate is fixedly connected between the inner side faces of the two first fixing strips, and the fixing mechanism is arranged on the right side of the first fixing plate. According to the invention, the fixing mechanism is arranged, so that inaccurate measured data caused by vibration of a to-be-tested motor in the testing process is avoided; and by arranging a torsion adjusting mechanism, inaccurate testing of the to-be-tested motor due to less measured data is avoided.

The present invention discloses a signal bias amplification type gearbox test system based on self-gain control. The system is formed by a gearbox (1), a driving module (2) which is connected to the gearbox (1), a resistance system (3), a vibration sensor (6), a temperature sensor (5), a torque sensor (4), a torque signal processing module (8) which is connected to the torque sensor (4), a bias amplifier circuit (9) which is connected to the torque signal processing module (8) and a single chip microcomputer (7) which is connected to the temperature sensor (5) and the vibration sensor (6). The system is characterized in that a self-gain control circuit (10) is arranged between the bias amplifier circuit (9) and the single chip microcomputer (7), a torque signal is more stable through the effect of the self-gain control circuit, thus the precision of a torque test is improved, and the evaluation of the performance of the gearbox by test personnel is facilitated.

The invention provides an optical material transmittance testing system and a testing method thereof. The testing system comprises: a light source emitting light along a first direction to obtain incident light for test; at least two measured samples, wherein the first measured sample is used for receiving the incident light, an angle is between the incident light and the surface of the first measured surface, first refracted light is obtained after the incident light penetrates through the first measured sample, the second measured sample is used for receiving the first refracted light, second refracted light is obtained after the first refracted light penetrates through the second measured sample and is transmitted along a second direction, the first direction and the second direction are positioned in a same linear line, and the specifications of the first measured sample are same to the specifications of the second measured sample; and a detector used for receiving the second refracted light and detecting to obtain the light intensity I of the second refracted light. The two measured samples are arranged, so the transmittance of the samples can be obtained through repeated refraction of the incident light during angle incidence, thereby the transmittance test problem during the angle incidence is solved.

The invention relates to the technical field of steel frame anti-seismic detection. The invention particularly relates to a work control method of steel frame anti-seismic detection equipment. The equipment includes a base, and the equipment further comprises a controller, a fixing mechanism, a lifting mechanism and a traction mechanism. The fixing mechanism comprises a plurality of positioning assemblies. The lifting mechanism comprises a lifting plate, a driving assembly and two sets of jacking assemblies. The traction mechanism comprises a sliding plate, an attaching assembly, a connectingassembly and a transmission assembly. The driving assembly, the connecting assembly and the transmission assembly are electrically connected with the controller. The invention discloses steel frame anti-seismic detection equipment and a detection method. A two-section type loading process is adopted when loading force is applied to the steel frame; according to the invention, a buffer process canbe provided for a to-be-tested steel frame and the transmission assembly such that inaccurate testing caused by the sudden application of a large load value is avoided, the service life of the transmission assembly is prolonged, the deviation of tested steel frame anti-seismic data is avoided, the accuracy of the tested data is further ensured, and the practicability of the equipment is improved.

Airplane bus cable test equipment and a test method are disclosed. The equipment comprises a portable case, a detection host and a detection sub-machine are arranged in the case, and the detection host comprises a power supply module, a man-machine interaction interface, a comprehensive test module, a host communication module and a test port. The detection sub-machine comprises at least one bus test signal transmitter, the bus test signal transmitter comprises a power supply module, a signal generation module, a sub-machine communication module and a test signal transmitting port, and during testing, a test instruction is input through the human-computer interaction interface of the detection host, the signal generation module of the detection sub-machine generates a matched standard test signal, the comprehensive test module analyzes the test signal to obtain a test result, and then the test result is sent to the human-computer interaction interface to be displayed.

An embodiment of the invention discloses a fish-eye lens MTF test method, which is characterized by calculating an optical center and radius of an effective light-emitting zone obtained when a sphere light source fisheye lens camera module shoots a sphere light source; according to the optical center and the radius, determining a detection zone in a preset field of view, the shape of the detection zone being determined according to position relation between the detection zone and the effective light-emitting zone; and finally, testing MTF of a fish-eye lens in the detection zone. The method prevents the phenomenon of MTF test inaccuracy caused by scene distortion due to distortion of the fish-eye lens, improves MTF test accuracy of the fish-eye lens, helps users to judge the imaging quality of the lens more accurately and visually, helps to improve camera quality detection accuracy and improves MTF test efficiency of the fish-eye lens. Besides, the embodiment of the invention also provides a corresponding realization device, thereby further enabling the method to have higher practicality. The device has the corresponding advantages above.

The invention discloses a photovoltaic device testing device and method, relates to a testing instrument in the photovoltaic field, and aims to monitor the uniformity of light intensity and timely discover the drifting of the uniformity of the light intensity in the production process so as to avoid inaccurate batch testing. The photovoltaic device testing device comprises a testing platform usedfor placing a photovoltaic device to be tested, a plurality of light intensity measuring units are arranged on the testing platform, and the light intensity measuring units are used for collecting light intensity information of a target testing point of the testing platform; the testing device further comprises a controller, the plurality of light intensity measuring units are connected with the controller, and the controller is used for calculating the light intensity uniformity of the testing platform according to the output of the plurality of light intensity measuring units.

Embodiments of the present application provide a mobile terminal testing method, device, storage medium, and mobile terminal. The method includes: responding to the first boot instruction triggered by touching the power button of the mobile terminal, waking up the processor of the mobile terminal, and The processor detects whether the pre-started software version in the mobile terminal is a test software version; if the pre-started software version in the mobile terminal is a test software version, then detects whether there is an external power supply for powering the mobile terminal; The external power supply for power supply starts the boot program of the mobile terminal, so that the mobile terminal enters the power-on state; in the power-on state, the mobile terminal is tested based on the test software version. In the embodiments of the present application, by using an external power supply to test the power supply of the mobile terminal, the problem of inaccurate testing caused by using a fake battery to test the power supply of the mobile terminal is avoided, and the accuracy and efficiency of the mobile terminal test are improved.

The invention relates to a device and a testing method for accurately measuring the heat of dissolution of energetic materials, belonging to the field of physical and chemical testing. Including furnace body, connecting wire and recorder, also includes reference unit and test unit; test unit includes rotating cover, sealing cover, connecting rod, reaction pool, turbine blade, ejection pellet; the present invention avoids puncture, friction and other dangerous operations, while solving the problem of inaccurate testing caused by the shrinkage of the isolation film, the device and method improve the efficiency of testing heat of dissolution of energetic materials and reduce the risk of testing.

The invention discloses a motor life testing tool, which comprises: a base for placing the motor; a pressing mechanism, including a connecting rod and a tension spring, for pressing the motor on the upper surface of the base; a detection circuit connected to the motor The input and output ends are used to monitor the speed and working current of the motor in real time; the fixed end of the connecting rod is rotatably fixed on the base, one end of the extension spring is fixed, and the other end of the extension spring is fixed on the On the connecting rod, have the free end of the connecting rod press the motor towards the base. The invention designs a motor life testing tool, which can reliably fix the motor, and monitor the speed and working current of the motor in real time, and can accurately analyze the working performance of the motor through the detection data, so as to judge the working life of the motor, and can Effectively avoid the inaccurate test caused by noise interference caused by non-motor body vibration or welding wire falling off during the motor life test.

The embodiment of the invention discloses an ACL capacity testing method, equipment and computer storage medium. The method includes: generating discrete ACL rules based on a discrete routing pool, and generating verification traffic and blackhole traffic; the black hole traffic represents traffic not covered by the discrete ACL rules; combining the ACL rules, the verification traffic, and The ACL black hole traffic is sent to the port under test of the device under test, so that the port under test of the device under test performs data matching based on the ACL rule, the verification traffic, and the black hole traffic; The matching quantity of the ACL rule of the device, and the ACL capacity is determined based on the matching quantity.

The invention discloses a relay transceiver, which comprises a shell, an upper joint, a signal transceiver and a lower joint; the upper joint, the signal transceiver and the lower joint are arranged in the shell, wherein the upper joint and the lower joint are respectively arranged at both ends of the relay transceiver, the signal transceiver is arranged between the upper joint and the lower joint and electrically connected with the upper joint and the lower joint respectively; the upper joint is connected with a cable and used for receiving an order sent by a data receiving processor through the cable, sending the order to the signal transceiver, and receiving pressure and temperature information sent by the signal transceiver; and the lower joint is electrically connected with a data collecting and wireless transceiving short joint, and used for receiving pressure and temperature information collected by the data collecting and wireless transceiving short joint, sending the pressure and temperature information to the signal transceiver, receiving an order sent by the signal transceiver and sending the order to the data collecting and wireless transceiving short joint. By adopting the relay transceiver, the underground pressure and temperature information can be observed in real time, so that the problem that the underground temperature and pressure information cannot be read in real time to cause incorrect testing is avoided.

The invention relates to a thermal resistance test circuit and method for a reverse conducting IGBT. The circuit comprises a control circuit, a gate voltage source, a test current source and a heatingcurrent source. The gate voltage source, the test current source and the heating current source are connected with the control circuit. The gate voltage source, the test current source, the heating current source and the control circuit are connected with the reverse conducting IGBT to be tested. The control circuit controls the test current source, the heating current source and the gate voltagesource to provide reverse test current, forward heating current and gate voltage respectively. When heating is carried out, after the reverse conducting IGBT to be tested is in forward conduction, power heating is carried out. When testing is carried out, the reverse conducting IGBT integrates a reverse diode, and reverse test current is input to record the cooling curve of the reverse conductingIGBT to be tested. A thermal resistance value is acquired according to the cooling curve and a temperature-sensitive coefficient. The problem of inaccurate test caused by a rebound phenomenon duringa forward test is avoided. The thermal resistance test is highly accurate.

The invention discloses a crop monitoring system based on an unmanned aerial vehicle and a method of the crop monitoring system. The crop monitoring system based on the unmanned aerial vehicle comprises the unmanned aerial vehicle and a sensor. A material holding box is arranged on the lower part of the unmanned aerial vehicle, the material holding box is internally provided with a controller, a hydraulic pump is arranged on the lower left part of the controller, a hydraulic rod is connected to the right side of the hydraulic pump, a vertical rod is arranged on the right side of the hydraulicrod, a side groove is formed in the outer surface of the vertical rod, a rotary motor is arranged on the right side of the vertical rod, a rotary roller is connected to the right side of the rotary motor, a winding device is arranged on the right side of the rotary roller, a base is installed on the lower part of the sensor, an extracting pipe is arranged on the left side of the base, a spring isinstalled on the inner surface of the extracting pipe, and a cross plate is connected to the lower part of the spring. The crop monitoring system based on the unmanned aerial vehicle has the main characteristics that the crop is monitored by using the arrival and departing of the unmanned aerial vehicle, manpower using is saved, monitoring devices can be transported to areas where human beings arenot prone to arriving, and the working efficiency is greatly improved.

The invention discloses a method and device for testing the system performance of terminal equipment. The method comprises the following steps: receiving a test instruction for testing the system performance of the terminal equipment; according to the test instruction, recording values of the influence of resource occupying factors on the system performance of the terminal equipment, wherein the resource occupying factors are factors occupying the resource of the terminal equipment. According to the invention, the values of the influence of the resource occupying factors on the system performance of the terminal equipment are recorded, so that the system performance of the terminal equipment can be tested based on the application of the terminal equipment; the method disclosed by the invention solves the problem that a test is incorrect due to the fact that the performance of the terminal equipment is tested only based on hardware in the prior art, so that the purpose that the system performance of the terminal equipment can be correctly detected is achieved.

The invention relates to the technical field of high temperature gate bias test, and discloses a high temperature gate bias test method, computer equipment and storage medium of a SiC MOSFET device. When testing the electrical parameters of the device, if the measurement of the SiC MOSFET device is not completed in time, the stress interruption time of the SiC MOSFET device can be evaluated. Stress time as a function of time, and stress interruption time to obtain additional stress time for SiCMOSFET devices. Apply a bias stress with additional stress time to the SiC MOSFET device to restore the threshold voltage on the SiC MOSFET device to the preset threshold, and then measure the SiC MOSFET device in time to ensure that the measured threshold voltage at this time can express Real-world drift of SiCMOSFET devices.