Automatic calibration test method and system for data acquisition equipment

Abstract

The invention discloses an automatic calibration test method and system for data acquisition equipment, and belongs to the technical field of automatic calibration test of the data acquisition equipment. The technical problem to be solved is to provide an automatic calibration test method of data acquisition equipment and an improvement of a system structure. The technical scheme adopted to solvethe technical problem is as follows: testing the static impedance of a to-be-tested equipment channel: measuring the static resistance of each transmission channel on the premise that a data acquisition device does not add any signal, and generating a resistance test report; during testing, controlling the test computer to send instrument control signals to the digital multimeter and the switch matrix module; controlling the switch matrix module to switch on and off the loop, realizing one-to-one gating of the digital multimeter and the to-be-tested channel of the data acquisition device, completing a static impedance test of the to-be-tested channel, then performing automatic calibration and precision detection on the to-be-tested equipment channel, and finally performing playback analysis on calibration test data. The method is applied to data acquisition equipment.

Description

technical field [0001] The invention relates to an automatic calibration test method and system for data acquisition equipment, belonging to the technical field of automatic calibration testing for data acquisition equipment. Background technique [0002] At present, during the production and testing process of data acquisition equipment, manual or semi-automatic testing methods are generally used for verification. Multiple testers operate the data acquisition equipment, measuring instruments, and meters according to the process, and read the collected values ​​and record them. and calculate the test results; during the test process, testers need to input different types of analog electrical signals and digital signals to the signal acquisition interface, and at the same time record and analyze the data output by the acquisition equipment, analyze and calculate the input signal and the output data of the acquisition equipment, Obtain the conversion coefficient, measurement e...

AI Technical Summary

Problems solved by technology

[0002] At present, during the production and testing process of data acquisition equipment, manual or semi-automatic testing methods are generally used for verification. Multiple testers operate the data acquisition equipment, measuring instruments, and meters according to the process, and read the collected values ​​and record them. and calculate the test results; during the test process, testers need to input different types of analog electrical signals and digital signals to the signal acquisition interface, and at the same time record and analyze the data output by the acquisition equipment, analyze and calculate the input signal and the output data of the acquisition equipment, Obtain the conversion coefficient, measurement error, bit error rate and other parameters of each channel of the data acquisition equipment; however, the currently used test methods are complex in the product operation process, with many repeated links, long calculation time, low work efficiency, and prone to human errors

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