Coal conveying line gangue recognition method based on image recognition and sorting system

Abstract

The invention discloses a coal conveying line gangue recognition method based on image recognition and a sorting system, and relates to the technical field of material recognition and sorting. The method comprises the following steps: preprocessing an input image; carrying out overall analysis on the preprocessed image, and judging whether coal gangue exists in a current image or not; positioning the position of the detected coal gangue in the image; and analyzing characteristic parameters of a positioning area, and recognizing the gangue when the characteristic parameters exceed a threshold value. The system comprises an image acquisition device arranged above a coal conveying line conveyor belt, a control terminal connected with the image acquisition device, and a gangue discharge device controlled by the control terminal and used for removing the recognized gangue on the coal conveying line conveyor belt, and the coal conveying line gangue recognition method is operated in the control terminal. The coal gangue target positioning precision can be effectively improved, the background interference problem caused by abrasion of the conveying belt is avoided, it is guaranteed that the coal gangue can be rapidly recognized, and the coal gangue recognition accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of material identification and sorting, in particular to a method and sorting system for gangue identification in coal conveying lines based on image identification. Background technique [0002] As human beings pay more and more attention to the living environment, vigorously developing high-efficiency clean coal technology is a hope and inevitable result for the coal industry to get out of the predicament. Coal preparation is the source technology of clean coal technology, and it is necessary to make raw coal into clean coal. The development of coal sorting and processing industry is an important measure to improve coal quality at present. The improvement of commercial coal quality not only brings huge economic benefits to coal mining enterprises, but also makes great contributions to the environmental protection of the society. Most of my country's coal is located in water-deficient areas, especially in ...

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Problems solved by technology

[0003] In China, from the end of the 1970s to the beginning of the 1980s, the "X-ray coal separator" was developed with the help of British D.E. There are defects in time control, gangue discharge control, coal gangue identification performance, etc., and there is a lack of interlocking control devices to improve safety and reliability, so safety and reliability performance is poor, the sorting accuracy is low, the sensitivity is low, the gangue discharge efficiency is low, and the stability is poor. , the quality of clean coal is low, the operation is inconvenient, far from meeting the requirements of practical application, and cannot be put into practical use

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