Electric energy meter instrument constant detection method, equipment and storage medium

Abstract

Embodiments of the present invention provide a method, device, and storage medium for detecting meter constants of electric energy meters. The method includes segmenting and processing the collected electric energy meter video to obtain an image of an optical pulse and an image of the last character of a counter; obtaining the electric energy Table the key frame in the video, and use the key frame as the first frame to continuously collect multiple frames of the light pulse image; input the multiple frames of the light pulse image into the pre-trained light pulse recognition model, according to the light pulse The output result of the pulse recognition model obtains the pulse count value; according to the last character image of the meter corresponding to the key frame or the image frame sampled every set period in the video of the electric energy meter, the last character of the meter is obtained ; Determine the detection result of the instrument constant of the electric energy meter according to the pulse count value and the last character of the counter. The embodiment of the present invention can reach the level of automatic detection.

Description

technical field [0001] The invention relates to the field of meter detection, and more specifically, to a method and system for detecting meter constants of electric energy meters. Background technique [0002] The instrument constant is an important technical index to measure the accuracy of the electric energy meter. It refers to the relationship between the test output of the electric energy meter and the change of the electric energy indicated by the display. It should be consistent with the constant on the nameplate. It is an important verification item in the verification process of the electric energy meter. one. According to the JJG 596-2012 regulations, the instrument constant measurement methods include counting and reading pulse method, running word test method and standard meter method. In terms of qualification judgment, the counting and reading pulse method is an equality judgment, and the walking word test method and the standard table method are both inequal...

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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