Steel wire rope core conveying belt joint twitch detection method based on X-ray image
A steel cord core and detection method technology, applied in image enhancement, image analysis, image data processing, etc., can solve the problems of low detection efficiency, low X-ray image quality, poor accuracy, etc.
Active Publication Date: 2019-09-27
ZAOZHUANG UNIV
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Problems solved by technology
However, due to the low quality of X-ray images collected under harsh working conditions, there are large errors in the wire rope end point information extracted by existing methods, resulting in low detection efficiency and poor accuracy in joint twitch detection methods.
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[0073] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0074] A method for detecting twitching of steel cord conveyor belt joints based on X-ray images according to the present invention, the overall scheme flow is as follows figure 1 As shown, for the X-ray to-be-inspected image and the reference image of the steel cord conveyor belt with complete joints, the minimum circumscribed rectangle of the joint layered area and the center of gravity of the joint space area are extracted respectively. Based on this, the joints in the image are calculated. Point state value, by calculating the difference between the corresponding joint point state values in the image to be inspected and the reference image, the joint twitch detection of the image to be inspected is realized.
[0075] figure 2 The minimum circumscribing rectangle extraction process of the joint delamination area in the ...
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The invention discloses a steel wire rope core conveying belt joint twitch detection method based on an X-ray image, and aims to accurately and efficiently calculate the twitch distance of a steel wire rope core conveying belt joint and improve the operability and accuracy of steel wire rope core conveying belt joint twitch detection so as to judge the joint condition. Based on the extraction result of the minimum circumscribed rectangle of the joint layering area and the joint neutral position area in the steel wire rope core conveying belt image, through calculating the fitting straight line of the upper joint and the lower joint and the gravity center of the joint neutral position area, the twitching distance detection of each steel wire rope joint end point is realized. The algorithm provided by the invention is efficient and high in accuracy, can be applied to an X-ray-based steel wire rope core conveying belt non-destructive detection system, realizes X-ray steel wire rope core conveying belt joint twitch detection, is beneficial to prevention of major belt breakage safety accidents, and has a relatively high application value.
Description
technical field [0001] The invention belongs to the field of non-destructive testing, and in particular relates to a detection method for joint twitching of steel cord conveyor belt joints based on X-ray images. Background technique [0002] Belt conveyor transportation is the main mode of transportation in production fields such as coal mines, and the conveyor belts used are mainly steel cord conveyor belts. Steel cord conveyor belt is a rubber conveyor belt with steel wire rope as the skeleton material, which is widely used in coal, mines, ports and other fields. In practical applications, a complete steel cord conveyor belt is formed by lapping several sections of steel cord conveyor belts. The joint area is the lowest and weakest part of the entire steel cord conveyor belt, and the steel cord twitching failure often occurs, leading to major safety accidents such as broken belts and seriously affecting safe production. Therefore, it is very important to timely and accur...
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Login to View More IPC IPC(8): G06T7/00G06T7/11G06T7/136G06T7/155G06T7/62G06T7/66
CPCG06T7/0004G06T7/11G06T7/136G06T7/155G06T7/62G06T7/66G06T2207/10081G06T2207/30136
Inventor 张晓光孙正黄元麒卢纪丽徐桂云李辉
Owner ZAOZHUANG UNIV