A method for identifying ablated areas of silver wire-type contacts based on edge detection

Abstract

The invention relates to a method for identifying the ablation area of ​​a silver-wire contact based on edge detection. The method mainly includes: decomposing the ablation area of ​​a silver-wire contact into three color intensity components of red, green, and blue; The weighted average obtains the intensity value of each coordinate; the monochrome matrix is ​​equalized to make the distribution on the matrix color scale more balanced, improve the contrast between the ablated area and the non-ablated area, and improve the subjective visual effect. The local minimum operation, hole filling and local maximum fusion operation are performed on the zero-normalized matrix, which improves the accuracy and integrity of the detection; combined with the idea of ​​difference, the image of the ablation area of ​​the silver-line contact is obtained. The detection method of the present invention can effectively detect the ablation area of ​​the silver wire type contact through simple parameter selection, the method is simple, and it is convenient for subsequent quantitative statistical calculation and analysis of the contact surface roughness parameters and surface components. Using it to discover problems in production and improve them has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of reliability, in particular to a method for identifying an ablation area of ​​a silver-line contact based on edge detection. Background technique [0002] When the relay works under the comprehensive stress of temperature, vibration, humidity, etc., a series of destructive effects such as mechanical, chemical, thermal, and electrical will occur, resulting in deep pits, bumps, etc. on the intact surface, and the contact surface morphology is gradually damaged. Changes in parameters such as contact pressure and contact resistance will reduce the contact performance, thereby destroying the normal operation of the relay and reducing the service life of the relay. Therefore, to identify the ablated area on the surface of the relay contact, it is necessary to fully understand the surface topography of the contact. The edge detection technology based on image processing has become the key technology of edge dete...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for identifying the ablation area of ​​the silver wire contact based on edge detection, which is used to solve the problem of low accuracy in the calculation of the roughness of the ablation area of ​​the relay and the analysis of the components in the prior art

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