Automatic detection method for joint twitching of steel cord conveyor belt
An automatic detection and steel rope core technology, which is 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 missed positives, etc., to improve detection accuracy and ensure safety running effect
Active Publication Date: 2018-05-01
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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This will lead to false alarms or missed alarms, affecting safe production, and may even cause economic losses due to conveyor belt breakage accidents because the twitched joints are not found and dealt with in time
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[0012] figure 1 is a schematic diagram of the joint image, figure 2 In order to eliminate the image schematic diagram of isolated points, 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 the present embodiment includes the following steps: a, performing 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, seek a mapping relationship between the joint image and the reference joint image, and obtain a normalization coefficient; c, perform twitch analysis and calculation according to the normalization coefficient to obtain the twitch distance.
[0013] In this embodiment, the step a specifically includes the following steps: a1, gray level correction; a2, Gaussian filtering; a3, image segmentation; a4...
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The invention discloses an automatic detection method for joint twitching of a steel cord conveyor belt, which comprises the following steps: a. performing joint point detection on an image of a joint to be detected and a reference joint image; b. performing surf feature extraction on the image of a joint point to be detected; Carry out feature matching, seek a mapping relationship between the joint image and the reference joint image, obtain the normalization coefficient; c, carry out twitching analysis and calculation according to the normalization coefficient again and obtain the twitching distance, the steel cord conveyor belt joint twitching automatic detection of the present invention The method can ensure the reliability of the calculation of the normalization coefficient, so even if the conveyor belt deviates or the speed changes, as long as the joint points are matched correctly, the calculation of the distance between the joint points can be ensured according to the normalization coefficient, and the detection accuracy of the wire rope joint twitch is improved. It solves the inaccurate calculation of the twitch of the steel wire rope joint inside the conveyor belt, and can adapt to the speed change and translation of the conveyor belt; it is of great significance to ensure the safe operation of the transportation 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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IPC IPC(8): G01N21/88G06T7/00G06T7/246
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 CO LTD