X-ray imaging stretching fault automatic detection method for steel cable core conveying belt joint

Abstract

The invention relates to an X-ray imaging stretching fault automatic detection method for a steel cable core conveying belt joint, which belongs to the field of X-ray nondestructive detection. Defects of lower reliability, poorer accuracy, non-visual display, dependence mainly on manual detection and the like exist in the current stretching fault detection of a current steel cable core conveying belt joint. The invention consists of the following three aspects: 1. on the basis of the gray level change characteristic of X-ray images of a steel cable core conveying belt, screening out images containing partial or all joint information from the X-ray images of the whole steel cable core conveying belt by adopting local histogram information; 2. splicing the screened images into the corresponding image containing the complete joint information; and 3. realizing the judgment for the stretching of each joint by adopting an improved condition Y-difference algorithm and a clustering method. The invention can automatically, rapidly and efficiently realize the stretching fault detection of the steel cable core conveying belt joint.

Description

technical field [0001] The invention belongs to the field of X-ray non-destructive testing, and in particular relates to a method for screening and splicing images of joints of steel cord conveyor belts in the detection of X-ray steel cord conveyor belts and an automatic detection method for stretching joints of steel cord conveyor belts. Background technique [0002] The joint of the steel cord conveyor belt is the lowest and weakest link in the whole steel cord conveyor belt. Most of the transverse fractures of the steel cord conveyor belt occur at the joint. In our country, there are almost no exceptions. Therefore, the monitoring and diagnosis of the transverse fracture of the steel cord conveyor belt is mainly aimed at the joint [1] . [0003] Static manual detection methods: such as "bubbling" phenomenon observation method, joint length measurement method, surface strain measurement method, etc. However, the reliability of the above method is not high, and it will be...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to propose an automatic detection method for the stretching failure of the joint of the steel cord conveyor belt by X-ray imaging, so as to solve the problems of low reliability and poor accuracy in the current monitoring and diagnosis of the stretching fault of the joint of the steel cord conveyor belt , the display is not intuitive, mainly relying on manual inspection and other issues

Images