A method for automatic detection of faults in outdoor electric energy meters

Abstract

The invention discloses an automatic fault detection method for an outdoor electric energy meter.The detection method comprises the following steps that 1, collection ports are arranged before delivery; before delivery, the first data collection port is connected between a display screen and a display controller of the electric energy meter in parallel, and the second data collection port is connected to the output end of the electric energy meter in parallel; a supplementary power source is independently arranged at the first data collection port; the supplementary power source is connected to a power source of the controller; the first data collection port is connected to an independent controller; 2, a fault is automatically detected, wherein timing detection and testing detection are included.According to the automatic fault detection method for the outdoor electric energy meter, the detection ports are preset before delivery, collection type monitoring is adopted, normal working of the electric energy meter will not be disturbed, various detection modes of timed detection, testing detection and alarm detection are adopted, the detection precision is high, and detection errors are small.

Description

Technical field [0001] The invention relates to an electric energy meter fault detection method, in particular to an outdoor electric energy meter fault automatic inspection method, and belongs to the technical field of electric energy meter failure detection. Background technique [0002] The electric energy meter is a measurement device used by the power supply management department to detect the electric energy used by each power user or individual. It is the basis for charging each power user or individual. Therefore, whether the power meter has a fault determines whether the power supply department can fairly Electricity units or individuals charge; the information of the electric energy meter is mainly conveyed through its display screen. In the production process of the electric energy meter, the display screen or [0003] Processing equipment or transmission equipment will inevitably have defects, which will cause the display of the display screen to fail to meet expectatio...

AI Technical Summary

Problems solved by technology

[0003] It is inevitable that there will be defects in the processing equipment or transmission equipment, which will cause the display of the display screen to fail to meet expectations, and there are defects that seriously affect the transmission of measurement information; There are many inspection procedures, the steps that inspection personnel need to input are complicated, the accuracy and efficiency of detection are not high, and the electric energy meter needs to be removed for offline inspection. Even if there are some electronic online inspection terminals, the outdoor electric energy meter in haze weather , because some of them are near the high-voltage lines and cannot be close to the detection, so the detection accuracy is easily affected by the degree of smog; Chinese patent application number 201510570512.6 discloses an automatic fault detection method for outdoor electric energy meters, which includes: using infrared transceivers The device sends a test signal to the detected watt-hour meter, so that the detected watt-hour meter controls its display screen to display the test character strings included in the test signal; utilize a CCD high-definition camera to shoot the display screen of the detected watt-hour meter to Output test image; Utilize image processor to carry out image processing to described test image, to identify the character string in described test image and output as recognition character string; Utilize ARM11 processor to combine described recognition character string with described test character string Compare to determine whether to send a fault alarm signal; the method also includes the step of image defogging; by the present invention, the outdoor electric energy meter can be realized in various weathers to carry out fault detection, but its detection content is only For the display screen, it is not possible to analyze the fault point. At the same time, it uses a CCD high-definition camera to capture the display data and obtain the display data through a series of algorithms. The working process is complex and prone to algorithm errors.

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