Method for recognizing in-out service state of relay protection pressing plate based on color template matching

A technology of template matching and throwing and withdrawing status, which is applied to emergency protection circuit devices, emergency protection data processing devices, electrical components, etc., can solve the problems of multiple relay protection screens, affect the recognition effect, and increase the difficulty of algorithm implementation Use difficulty, improve reliability, and remove the effects of lighting effects

Active Publication Date: 2019-04-26
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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  • Method for recognizing in-out service state of relay protection pressing plate based on color template matching
  • Method for recognizing in-out service state of relay protection pressing plate based on color template matching
  • Method for recognizing in-out service state of relay protection pressing plate based on color template matching

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Embodiment

[0047] figure 1 It is a flowchart of a method for identifying the switching status of a relay protection press plate based on color template matching according to the present invention, including the following steps:

[0048] S1: Take an image of the relay protection plate;

[0049] S2: Image preprocessing, using 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, manual marking can be performed.

[0050] S3: Template collection, according to the image of the pressing plate extracted after image preprocessing, manually erase irrelevant pixels to highlight the key pixels of the template's casting and exit status, and set the required key position points and parameter information;

[0051] S4: Image recognition, using the image of the pressing plate extracted after imag...

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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 invention relates to the technical field of a relay protection pressing plate, and more specifically, to a method for identifying the switching state of a relay protection pressing plate based on color template matching. 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, the current power grid company has a large number of protection plates, and there are many types. Manual inspection of the platen status is likely to cause errors in the platen operation due to visual fatigue, a large workload, and a long time. For this reason, in recent years, many scholars have carried out a lot of research on the reliable detection and rapid recognition of the protection pressure plate's throwing and retreating state, including standardized operation procedures, clever use of color markings, and image-based automatic recognition technology....

Claims

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Application Information

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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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