Automatic outdoor electric energy meter fault detection method

Abstract

The invention relates to an automatic outdoor electric energy meter fault detection method. The method comprises the steps that a test signal is sent to a detected electric energy meter through an infrared transceiver, so that the detected electric energy meter controls the display to display a test character string in the test signal; a CCD high-definition camera is used to shoot the display of the detected electric energy meter to output a test image; an image processor is used to process the test image, so that a character string in the test image is identified and is output as an identified character string; and an ARM11 processor is used to compare identified character string and the test character string to determine whether a fault alarm signal is issued. The method further comprises the step of image defogging. According to the invention, full automatic accurate detection of faults of the outdoor electric energy meter is realized in all weather.

Description

[0001] This invention is a divisional application of a patent with the application number 201510152737.X, the application date is April 1, 2015, and the invention name is "Automatic Inspection Method for Outdoor Energy Meter Faults". technical field [0002] The invention relates to the field of electric energy meters, in particular to an automatic fault detection method for outdoor electric energy meters. Background technique [0003] The energy meter is the metering equipment used by the power supply management department to detect the electric energy used by each power unit or individual, and is the basis for charging each power unit or individual. Therefore, whether the power meter is faulty determines whether the power supply department can fairly Electricity units or individuals charge. [0004] The information of the energy meter is mainly conveyed through its display screen. In the production process of electric energy meters, it is inevitable that there will be def...

AI Technical Summary

Problems solved by technology

In the production process of electric energy meters, it is inevitable that there will be defects in the display screen or processing equipment or transmission equipment, which will cause the display screen to fail to meet expectations and have defects, which seriously affect the transmission of metering information.

Therefore, it is necessary to detect the electric energy meters suspected of being faulty, especially for some outdoor electric energy meters, which are not conducive to disassembly and inspection due to their proximity to high-voltage lines, so the requirements for inspection are relatively high

[0005] In the prior art, the detection of display defects of suspected faulty outdoor electric energy meters mainly adopts the manual detection method, and there are many inspection procedures, and the steps that inspectors need to input are complicated, the accuracy and efficiency of detection are not high, and the electric energy meter needs to be removed for inspection. Off-line detection, even if there are some electronic online inspection terminals, for outdoor electric energy meters in haze weather, because some of them are near high-voltage lines and cannot be close to detection, the detection accuracy is easily affected by the degree of haze

[0006] Therefore, a new electronic detection-based outdoor electric energy meter fault inspection method is needed to replace the complex and inefficient manual detection method, transform the existing electronic inspection terminal with simple structure, and realize the display defects of various types of outdoor electric energy meters online testing

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