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A Color Template Matching Based Recognition Method for Relay Protection Pressure Plate Switching and Retiring Status

A technology of template matching and throwing and withdrawing status, which is applied in the direction of emergency protection circuit devices, emergency protection data processing devices, electrical components, etc. Effects of lighting effects, reducing difficulty of use, and improving reliability

Active Publication Date: 2020-04-14
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many problems in the process of applying the platen state recognition based on image recognition, such as camera angle, distance, light intensity, illumination angle, and even obstacles or people's shadows and other factors directly affect the recognition effect. There are many types of relay protection screens, which also increases the difficulty of algorithm implementation

Method used

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  • A Color Template Matching Based Recognition Method for Relay Protection Pressure Plate Switching and Retiring Status
  • A Color Template Matching Based Recognition Method for Relay Protection Pressure Plate Switching and Retiring Status
  • A Color Template Matching Based Recognition Method for Relay Protection Pressure Plate Switching and Retiring Status

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Experimental program
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Effect test

Embodiment

[0045] figure 1 It is a flow chart of a color template matching based relay protection pressure plate switching state identification method of the present invention, including the following steps:

[0046] S1: Take an image of the relay protection plate;

[0047] S2: Image preprocessing, use the protective screen frame to complete the correction and extraction of the photographed image, and solve the problem of inconsistency in the angle and distance when taking pictures; the red rectangular frame around the relay protection screen is used as a mark, if not, it can be marked manually.

[0048] S3: template collection, according to the platen image extracted after image preprocessing, by manually erasing irrelevant pixels, highlighting the key pixels of the status characteristics of template throwing and withdrawing, and setting the required key position points and parameter information;

[0049] S4: Image recognition, using the image of the platen extracted after image prepro...

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Abstract

The invention relates to the technical field of relay protection pressing plates, in particular to a method for recognizing the in-out service state of the relay protection pressing plate based on color template matching. The method adopts a template matching technology, uses the steps of image photographing of the relay protection pressing plate, image preprocessing, template acquisition, image recognition and the like, avoids the defects that different types of protection screens need to design different algorithms, reduces the difficulty of use, has high practicality, solves the influence of the photographing angle and the distance on the recognition result, can be applied to a handheld terminal or a mobile phone, greatly facilitates the use for operating personnel, adopts a RGB color normalization method, eliminates the effects of light and improves the reliability of recognition.

Description

technical field [0001] The present invention relates to the technical field of relay protection pressure plates, and more particularly, to a color template matching-based method for identifying the throw-in and withdrawal status of relay protection pressure plates. Background technique [0002] The accuracy of the switching status of the relay protection pressure plate is the key to the safe and reliable operation of the power grid. However, at present, the power grid company has a large number and types of protective pressure plates, and manual detection of the pressure plate status is likely to cause errors in the operation of the pressure plate due to visual fatigue, and the workload is heavy and time-consuming. For this reason, in recent years, many scholars have conducted a lot of research on the reliable detection and rapid identification of the protection platen's throwing and withdrawing status, including standardizing the operation process, skillful use of color ide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H1/00
CPCH02H1/0092
Inventor 桂盛青冯学斌温志新刘瑞荣
Owner GUANGDONG POWER GRID CO LTD
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