Electric energy meter constant detection method and device, and storage medium

Abstract

The embodiment of the invention provides an electric energy meter constant detection method and device, and a storage medium, and the method comprises the steps: carrying out the segmentation of a collected electric energy meter video, and obtaining an optical pulse image and a register final character image; acquiring a key frame in the electric energy meter video, and continuously acquiring multiple frames of optical pulse images by taking the key frame as a first frame; inputting the multiple frames of optical pulse images into a pre-trained optical pulse recognition model, and obtaining a pulse count value according to an output result of the optical pulse recognition model; obtaining a register last character according to the key frame or a register last character image corresponding to an image frame sampled every set period in the electric energy meter video; and determining a detection result of the instrument constant of the electric energy meter according to the pulse counting value and the final character of the register. The embodiment of the invention can achieve the level of automatic detection.

Description

Technical field[0001]The present invention relates to the field of instrument detection, and more particularly to a power gauge constant detection method and system.Background technique[0002]The meter constant is an important technical indicator for measuring the accuracy of the energy meter. It refers to the relationship between the energy-energy variation between the energy meter test output and the display indicated by the display. It should be consistent with the constant of the nameplate sign. It is an important verification project during the energy meter verification process. one. According to the JJG 596-2012 procedures, the meter constant measurement method has a read pulse method, typing test method, and standard formulation. From a qualified judgment, the reading pulse method is to determine whether to judge, the typing test method and the standard measures are inequality, and the reading pulse method is more accurate, and the standard method is more accurate, and will no...

AI Technical Summary

Problems solved by technology

[0004] In the traditional measurement and reading pulse method instrument constant inspection, due to the intervention of artificial naked eye observation and manual control, there are errors caused by the hand-eye asynchronous error of the tester, the truncation error of the pulse counter and the resolution of the liquid crystal counter.

Usually, the test error is reduced by increasing the number of digits at the end of the LCD counter and reducing the power consumption of the analog power consumption, but this undoubtedly increases the work intensity and test time of the testers, which is prone to visual fatigue and poor resolution. Phenomena such as stability and low detection accuracy

The self-inspection (self-calibration) method proposed by the scholar Sheng Quangen overcomes the hand-eye asynchronous error of the tester, but it does not meet the requirements of third-party inspection, and it needs to increase the development of software and hardware of the electric energy meter, which increases the cost

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