Method of automatically detecting joint twitching of steel wire core conveyor belt

An automatic detection and steel rope core technology, applied in the direction of optical testing flaws/defects, image data processing, instruments, etc., can solve problems such as economic losses, affecting production safety, false positives or missing negatives, etc., to improve detection accuracy and ensure safety running effect

Active Publication Date: 2015-06-24
CHINA COAL TECH ENG GRP CHONGQING RES INST
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Problems solved by technology

This will lead to false alarms or missed alarms, affecting safe production, and may even cause economic los

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  • Method of automatically detecting joint twitching of steel wire core conveyor belt
  • Method of automatically detecting joint twitching of steel wire core conveyor belt
  • Method of automatically detecting joint twitching of steel wire core conveyor belt

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[0012] figure 1 Is a schematic diagram of the joint image, figure 2 In order to eliminate the isolated point image diagram, image 3 It is a schematic diagram of the joint distance; as shown in the figure: the automatic detection method for the joint twitch of the steel cord conveyor belt of this embodiment includes the following steps: a. Perform joint point detection on the joint image to be detected and the reference joint image; b. The joint point image to be inspected Perform surf feature extraction, perform feature matching according to feature values, and seek a mapping relationship between the joint image and the reference joint image to obtain the normalization coefficient; c. Perform twitch analysis and calculate the twitch distance according to the normalization coefficient.

[0013] In this embodiment, the step a specifically includes the following steps: a1, gray level correction; a2, Gaussian filtering; a3, image segmentation; a4, image filtering to eliminate isolate...

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Abstract

The invention discloses a method of automatically detecting joint twitching of a steel wire core conveyor belt. The method includes the steps of a, detecting joints in a joint image to be detected and a reference joint image; b, subjecting the joint image to be detected to surf feature extraction, performing feature matching according to feature values, and finding a mapping relation between the joint image and the reference joint image to obtain a normalization coefficient; c, according to the normalization coefficient, performing twitching analytical calculation to obtain a twitching distance. The method has the advantages that calculation reliability of the normalization coefficient is guaranteed, even when the belt deviates or changes in speed, accuracy of joint distance calculation can be ensured according to the normalization coefficient as long as joint matching is correct, precision of steel wire joint twitching detection is improved, the problem that calculating twitches of steel wire joints in the belt is inaccurate is solved, the method adapts to speed changing and shifting of the belt, and the method is significant to ensuring operational safety of a conveying system.

Description

technical field [0001] The invention relates to a detection method for a conveyor belt joint, in particular to an automatic detection method for the twitching of a steel cord conveyor belt joint. Background technique [0002] In the field of coal mine conveyor belt transportation, long-distance steel cord conveyor belts have many vulcanized joints, and the joints are the weakest link in the entire steel cord conveyor belt. As far as the fracture accidents of steel cord conveyor belts in existing coal enterprises are concerned, most of them are caused by joint twitching that has not been discovered in time. Therefore, it is of great practical significance to detect and predict the joint twitching of the steel cord conveyor belt to avoid the occurrence of broken belt accidents. Many domestic universities and companies have performed twitch analysis on X-ray fluoroscopy conveyor belt joint images. However, these technologies have not considered the actual transportation enviro...

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Application Information

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IPC IPC(8): G01N21/88G06T7/00
Inventor 胡宗亮方崇全罗明华佘影朱兴林向兆军张荣华徐敏冯诗正郑芳菲
Owner CHINA COAL TECH ENG GRP CHONGQING RES INST
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