Indicating instrument detecting system and method

Abstract

The invention provides an indicating instrument detecting system and method. The detecting system comprises a detected indicating instrument, a standard source, a standard meter, a CMOS camera, a data acquisition card and a computer, wherein the standard source is connected with the detected indicating instrument, the standard meter and the computer, the CMOS camera is connected with the data acquisition card, and the data acquisition card is inserted into a card slot of the computer; the standard source outputs testing benchmark electricity quantity to the detected indicating instrument and the standard meter according to a testing benchmark value; the standard meter outputs a standard value generated according to the testing benchmark electricity quantity to the computer; the CMOS camera acquires an image of the dial plate of the detected indicating instrument in real time, and the image of the dial plate is transmitted to the computer through the data acquisition card; when a pointer in the image of the dial plate coincides with a scale value corresponding to the testing benchmark value, the computer sends a stopping instruction to the standard source, and a current standard value output by the standard meter to the computer is recorded; whether error exceeds an error standard value or not is judged by the computer according to the current standard value and the testing benchmark value, and a judgment result is output.

Description

Technical field [0001] The present invention relates to an indicating instrument detection technology, in particular to an indicating instrument detection method and system. Background technique [0002] In the process of detecting whether the grid system is operating normally, the indicating instrument is widely used because of its analog circuit design which can accurately monitor the electricity. However, because the data acquisition of common indicating instruments mostly uses manual readings for instrument detection, there are problems such as large errors, difficult readings, and no communication interface. Also, due to the limitations of detection equipment and detection methods, the measurement work is carried out. Bringing a greater impact, but also not conducive to the safe and stable operation of the power grid. In addition, due to the abundant test types, large amount of data, and poor manual operation accuracy in practical applications, it is difficult to improve th...

AI Technical Summary

Problems solved by technology

However, because the data acquisition of common indicating instruments is mostly carried out by manual reading, there are problems such as large errors, difficult to read accurately, and no communication interface, etc., and because of the limitations of testing equipment and testing methods, it is difficult for the development of measurement work. It has a great impact, and it is also not conducive to the safe and stable operation of the power grid.

Moreover, due to the rich test types, large amount of data, and poor manual operation accuracy in practical applications, it is difficult to improve the test efficiency, which has brought great human influence to the development of the test work.

During the detection process, due to the need for the detection personnel to switch between the test types and ranges, and to test various power measurement points sequentially, due to the limitation of the visual range, the readings of the standard instrument and the indicating instrument cannot be obtained synchronously, and there is a certain hysteresis. It has a certain influence on whether the test result is correct or not

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