Automatic checking method for faults of outdoor electric energy meter

Abstract

The invention relates to an automatic checking method for faults of an outdoor electric energy meter. The checking method includes the steps that testing signals are sent to a detected electric energy meter by using an infrared transceiver, so that the detected electric energy meter controls a display screen of the detected electric energy meter to display the testing signals including a testing character string; the display screen of the detected electric energy meter is shot by a CCD high-definition camera to output a test image; picture processing is conducted on the test image by using an image processor to identify a character string of the test image and to be output as an identification character string; the identification character string is compared with the testing character string by using an ARM 11 processor in order to judge whether a failure warning signal is sent out. The method further includes a defogging process on the image. By means of the automatic checking method, full-automatic accurate detecting the outdoor electric energy meter can be achieved in all kinds of weather.

Description

technical field [0001] 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 [0002] The energy meter is the metering equipment used by the power supply management department to detect the electric energy used by each power-consuming unit or individual, and is the basis for charging each power-consuming unit or individual. Therefore, whether there is a fault in the power meter determines whether the power supply department can fairly Electricity units or individuals charge. [0003] 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 defects in the display screen or processing equipment or transmission equipment, which will cause the display of the display screen to fail to meet expectations and have defects, which seriously affect the tra...

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

[0004] 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

[0005] 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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