Material accumulation detection system for machine head of belt conveyor

Abstract

The invention discloses a material accumulation detection system for a machine head of a belt conveyor. The material accumulation detection system comprises a first belt conveyor and a second belt conveyor which are in parallel lap joint or vertical lap joint, wherein a strip-shaped laser probe and an industrial camera are mounted at the upper end of the second belt conveyor; and the position of the strip-shaped laser probe and the position of a laser stripe are adjusted, so that the laser stripe is vertical to the belt running direction of the second belt conveyor. The invention further discloses a specific detection method. The specific detection method comprises the following steps: when no material is accumulated or less material is accumulated, taking a laser stripe image acquired bythe industrial camera as a relatively straight or concave and relatively smooth curve as an initial reference standard; when coal is accumulated, projecting the laser stripe on the material to show anupward convex characteristic, wherein the upward convex degree reflects the size of the accumulated material; and detecting the shape of the laser stripe in real time and extracting the shape characteristic of the laser stripe, calculating the surrounding area and the average height deviation between the shape of the laser stripe and a reference standard value shape, judging the size of the current material volume and the height of a coal pile, and giving an alarm if the size of the current material volume and the height of the coal pile exceed a preset threshold value.

Description

technical field [0001] The invention relates to the technical field of material transportation, in particular to a material accumulation detection system at the head of a belt conveyor. Background technique [0002] Belt conveyors are widely used in coal enterprises and are indispensable logistics conveying equipment to form a complete assembly line. In the production process, when a problem occurs in one part, it will cause the entire production line to be shut down, causing heavy losses to production. Therefore, many protective devices are installed on belt conveyors at present, and they play a certain role in the production process. However, due to the relatively harsh coal production environment, the parts are prone to rust and malfunction, and there are often false alarms and false alarms. Up to now, there is no reliable technology that can completely solve common accidents such as coal piles at the bottom of the bunker. All production units mainly rely on manual insp...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned shortcomings, the object of the present invention is to provide a material accumulation detection system at the head of a belt conveyor, which improves the classic vision-based method, adds laser stripes, and only needs a single camera to detect laser stripe images. Collecting, and then using the algorithm to calculate the size of the coal pile, solves the problems of image brightness, low contrast, poor detection effect, etc., and can greatly improve the detection efficiency and effect

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