A method for detecting longitudinal tear of conveyor belt based on diffuse reflection of metal film

Abstract

The invention discloses a conveyor belt longitudinal tear detecting method based on metal film diffuse reflection, and belongs to the technical field of conveyor belt online detection of coal mine enterprises. The conveyor belt longitudinal tear detecting method is characterized by being a detecting method for conveyor belt longitudinal tear by utilizing a physical property that infrared-ray reflectance of the metal film is 5 times that of a black adhesive tape and combining an infrared-ray CCD (charge coupled device) camera image detecting technology of a metal film. Infrared rays emitted by an area array infrared-ray light source used by the method cover half of the area of an adhesive tape; after the infrared rays generate diffuse radiation on the outer surface of a frosted metal tin film, one part of reflection signals are received by a CCD camera so as to draw out a surface condition figure of the half of the adhesive tape; by virtue of the design, less normal hardware equipment is utilized to realize wide-range and highly-real-time longitudinal tear early warning of a conveyor adhesive tape, so that purchasing and operation cost of the equipment is controlled within an acceptable range of the enterprises, and a misjudgment rate of an image analysis system to the adhesive tape outer surface state can be controlled to be lower than 10%.

Description

technical field [0001] The invention relates to a method for detecting longitudinal tearing of a conveyor belt based on the diffuse reflection of a metal film, which belongs to the technical field of on-line detection of conveyor belts in coal mining enterprises, and in particular relates to a physical property that utilizes the infrared reflectivity of the metal film to be more than 5 times that of a black belt. , and combined with the CCD camera image detection technology to complete the detection method for the longitudinal tear of the conveyor belt. Background technique [0002] Longitudinal tearing, transverse tearing, and fire are the three major disasters of belt conveyors, among which longitudinal tearing is the most common. Under the coal mine, if the longitudinal tearing of the belt cannot be found in time, it may cause the entire conveyor belt to be scrapped, or even cause casualties due to the rupture of the belt, which is not conducive to safe production. At pr...

AI Technical Summary

Problems solved by technology

[0004] The present invention is a method for detecting longitudinal tearing of conveying tape based on the diffuse reflection of metal film, and its purpose is to solve the problems of poor real-time performance, low efficiency and high hardware requirements in the current detection method for longitudinal tearing of tape, thereby disclosing a method using The infrared reflectance of the metal film is more than 5 times that of the black tape. This physical property is combined with the CCD camera image detection technology to complete the method of longitudinal tear detection of the tape.

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