Electric energy meter liquid crystal device fault detection method and system

A liquid crystal device and a fault detection technology, applied in the field of electric energy meters, can solve the problems of reducing work efficiency, unable to automatically identify the liquid crystal of electric energy meters, increasing the time for manual detection, etc., to achieve the effect of improving work efficiency

Inactive Publication Date: 2017-10-17
STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there is a liquid crystal device on the electric energy meter for observing readings and related parameters. As time goes by, the liquid crystal device may fail. The existing fault detection of the liquid crystal device of the electric energy meter often needs to be carried out manually; automatic i

Method used

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  • Electric energy meter liquid crystal device fault detection method and system
  • Electric energy meter liquid crystal device fault detection method and system
  • Electric energy meter liquid crystal device fault detection method and system

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Embodiment 1

[0043] Such as figure 1 As shown, the fault detection system for the liquid crystal device of the electric energy meter provided in this embodiment includes the following steps:

[0044] S1: Set the image acquisition device on the electric energy meter box to capture the working image of the liquid crystal when the liquid crystal device of the electric energy meter is turned on;

[0045] S2: Obtain the power on and off signals of the electric energy meter, and judge whether the electric energy meter is powered on, and if so, obtain the working image of the liquid crystal when the liquid crystal device on the electric energy meter is on through the image acquisition device;

[0046] S3: If not, return to step S2;

[0047] S4: Sending the liquid crystal working image to the image processor;

[0048] S5: The image processor performs preprocessing on the collected liquid crystal working image to obtain a binarized image;

[0049] S6: Obtain the characteristic signal of the liqu...

Embodiment 2

[0056] Such as figure 2 As shown, it is a schematic block diagram of a fault detection system for an electric energy meter liquid crystal device; the fault detection system for an electric energy meter liquid crystal device provided in this embodiment includes an image acquisition device and an image processor; the image acquisition device of this embodiment adopts a camera; the image processor adopts The processor installed in the PC for image processing; the camera is used to capture the working image of the liquid crystal when the liquid crystal device of the electric energy meter is working; and input the captured working image of the liquid crystal into the PC for image processing and analysis; The result of the analysis is communicated with the error meter, and then the meter voltage relay is controlled by the error meter; the meter voltage relay performs corresponding control operations on the electric energy meter; the meter voltage relay is connected with the electric...

Embodiment 3

[0068] Such as image 3 Shown is the connection diagram of the hardware system of the fault detection system for the liquid crystal device of the electric energy meter; the hardware system provided by this embodiment mainly includes a chassis shell 1, a test platform 2, an electric energy meter 3, a bar light source 4, a camera 5, and a linear slide table 6 And image processor 7; The image processor of the present embodiment adopts the processor that is used for image processing analysis in the PC to realize; Adopt machine vision to combine mechanical technology, utilize image processing algorithm to analyze, obtain electric energy meter liquid crystal size, appearance Defect (cracks, holes, stains, etc.) information forms a sample library, and the automatic detection of the object to be tested is realized by comparing the liquid crystal of the electric energy meter to be tested with the standard information of the sample library.

[0069] Among them, the chassis shell is main...

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Abstract

The invention discloses an electric energy meter liquid crystal device fault detection method. The method comprises the steps that working images of a liquid crystal device are collected through an image collecting device when an electric energy meter is energized; the liquid crystal working images are transmitted into an image processor; characteristic signals of a binary image and the liquid crystal working images are obtained; finally, the characteristic signals are compared with electric energy meter liquid crystal device working standard characteristic signals stored in a database system to obtain a difference value, and whether a fault exists in the liquid crystal device or not is obtained; according to the method, whether defects exist in electric energy meter liquid crystals or not can be identified automatically; in this way, manual work of detecting each electric energy meter liquid crystal can be reduced, and the work efficiency is improved. An epitope voltage relay is controlled through communication of upper computer software and an error instrument, and energizing and deenergizing of the electric energy meter is controlled. In the energizing moment of the electric energy meter, liquid crystals can be subjected to point measurement, at this time, shooting is conducted through a camera, comparison is conducted with samples in a standard library by means of the image processing technology, and whether the electric energy meter liquid crystals break down or not is judged.

Description

technical field [0001] The invention relates to the field of electric energy meters, in particular to a fault detection method and system for a liquid crystal device of an electric energy meter. Background technique [0002] At present, there is a liquid crystal device on the electric energy meter for observing readings and related parameters. As time goes by, the liquid crystal device may fail. The existing fault detection of the liquid crystal device of the electric energy meter often needs to be carried out manually; automatic identification is not possible. Whether there is a defect in the liquid crystal of the electric energy meter, therefore, to detect whether the liquid crystal of the electric energy meter is faulty, increases the time for manual detection of the liquid crystal of each electric energy meter, and reduces the work efficiency. Contents of the invention [0003] The object of the invention is to propose a fault detection system for a liquid crystal devi...

Claims

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Application Information

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IPC IPC(8): G02F1/13
Inventor 杨芾藜侯兴哲郑可籍勇亮叶君刘型志陈文礼
Owner STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST
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