Underground coal bunker coal level detecting method based on image processing technology

Abstract

The invention discloses an underground coal bunker coal level detecting method based on the image processing technology. The method comprises the steps that firstly, an enhancement type camera ICCD is utilized for collecting images of a coal bunker according to the range gating laser active imaging technology; collected analog signals are converted into digital signals through a video decoder SAA7113H, wherein the digital signals can be processed through a DM642 chip; the DM642 chip is used for reading image data from a memorizer and filtering the image data; the edge extraction is carried out on the filtered images by combining the advantages of the BEMD decomposition, mutual information entropy and image overlapping; the coal level height information is extracted according to the coal level detecting and recognizing algorithm that the geometrical information of the scenery based on the pre-determined geometrical information in the lighting. The method is high in distance measuring precision, good in anti-interference performance and high in real-time performance, solves the key problem of coal mine safety production monitoring and communicating and plays a positive, real and long-term significant role on coal mine safety production and economical benefit increasing.

Description

technical field [0001] The invention relates to the field of coal mine safety production monitoring, in particular to an image processing technology-based coal level detection method for an underground coal bunker. Background technique [0002] As a primary energy source, coal is an important pillar of my country's national economic development. In coal production, it is necessary to set up various coal bunkers in the main transportation links of coal mines above and below the mine to alleviate the uneven lifting and transportation caused by the production of each link. Especially the underground coal bunker, as the throat of coal mine production, its leaking (overflow) and empty bunker (emptying) pose a greater threat to safe production. Therefore, real-time and accurate monitoring of the coal level in the coal bunker is the key to ensuring safe production and improving efficiency. [0003] Due to limited space, the diameter of the underground coal bunker is generally 5 t...

AI Technical Summary

Problems solved by technology

[0005] According to the characteristics of the coal mine, the underground coal bunker is in the harsh environment of low illumination, high humidity, and high dust, so the use of image processing technology to detect the coal level of the underground coal bunker has been subject to many restrictions

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