5results about How to "Save testing time" patented technology

The application provides a testing device and a testing method for a semiconductor three-terminal device SOA curve, and the testing device comprises an adjustable power supply, an adjustable signal supply and a control and human-computer interaction module, the adjustable power supply is connected with a power terminal and a grounding terminal of a device under test, and is controlled by the control and human-computer interaction module, so as to provide a power voltage with adjustable voltage value for the device under test; the adjustable signal supply is connected with a signal terminal of the device under test, and is controlled by the control and human-computer interaction module, so as to provide a driving signal with adjustable amplitude and adjustable pulse width time for the device under test; the control and human-computer interaction module is connected with the power terminal and the grounding terminal of the device under test, and is used for detecting the voltage of the power terminal of the device under test and the current flowing through the device under test at different time points, and drawing an SOA curve based on the detected voltage and current. Through the testing device and the testing method provided by the application, the problems that the existing device cannot fix one parameter to adjust another parameter, the testing efficiency is low, and there is no energy control circuit and the like are solved.

The invention provides an electric vehicle high-voltage ripple closed-loop test system and method. The electric vehicle high-voltage ripple closed-loop test system comprises a ripple signal generation unit, a power amplification unit, a coupling transformer, a direct-current power supply, a data acquisition unit and a control unit. According to the electric vehicle high-voltage ripple closed-loop test system and method provided by the invention, ripple signals are stable, common-mode noise can be removed, and phase continuity and no jitter during switching of any amplitude and frequency are realized; the data acquisition unit is arranged, manual reading is not needed, and the measurement precision is higher; automatic testing is achieved, the influence of human factors is eliminated, and high consistency and repeatability of testing results of different batches and different operators are guaranteed; closed-loop testing is achieved, testing efficiency is improved, and labor and testing time are greatly saved.

The utility model discloses a kind of probe load resistance and load temperature rise tester, operating machine table is correspondingly set with a group of lifting mechanism in the position of test station, the lifting mechanism is installed on the lifting part of pressure perception sensor for realizing pressure data detection;Test station is also provided with temperature sensor for realizing temperature detection;The utility model is by setting pressure perception sensor and detecting pressure needle, can accurately obtain the pressure data in the process of probe pressing down, and timely, intuitively feedback to test personnel by acquisition system, significantly improve the accuracy of probe load detection and data feedback efficiency.Simultaneously, resistance load test and load temperature rise test are integrated into probe load detection process, realize resistance load test by detecting pressure needle and product contact electricity, complete load temperature rise test using temperature sensor, realize the integration of multiple detection functions, greatly improve the detection efficiency, save detection time and cost.

This invention discloses a smart lock intelligent reliability testing system and method. The system includes a control module, a reliability testing module, a data acquisition module, and a data analysis module. The control module is configured to send test commands to the reliability testing module; the reliability testing module is configured to respond to the test commands and drive the target smart lock to complete the test; the data acquisition module is configured to detect the operating status information of the target smart lock during the test and feed it back to the data analysis module; the data analysis module is configured to obtain test results based on the operating status information and feed them back to the control module for decision-making on subsequent test commands. This invention designs a safe, accurate, and intelligent reliability testing system, significantly saving testing manpower and time, and can simulate the actual application scenarios of smart locks, providing feedback on whether the smart lock truly opens and closes, thus ensuring the security and reliability of the smart lock.

The invention provides a triaxial active confining pressure Hopkinson test device for rockfill materials, the triaxial active confining pressure Hopkinson test device comprises a base, a confining pressure sealing assembly and a pressure loading assembly, a housing is arranged on the base, and a mounting cavity is arranged in the housing; the confining pressure sealing assembly comprises an annular cabin body, a replaceable bushing and two loading pressure heads, the annular cabin body is arranged in the mounting cavity, an opening is formed in the inner side wall of the annular cabin body, the replaceable bushing is detachably mounted at the opening, and the annular cabin body and the replaceable bushing define a confining pressure cavity; the two loading pressure heads are respectively plugged at the two ends of the replaceable bushing to define an accommodating cavity, the accommodating cavity is used for filling a rockfill material sample, and the outer end surfaces of the loading pressure heads are flush with the axial end surface of the annular cabin body; an incident bar and a transmission bar in the stress loading assembly are respectively propped against the two loading pressure heads so as to apply preset loading force to the loading pressure heads and the rockfill material sample. According to the invention, the loading force can be accurately transmitted to the rockfill material sample, and the test precision can be improved.