Author(s)

Yina Wang, Dong Wei, Bojie Zhao

Corresponding Author

Yina Wang

ABSTRACT

In order to quickly and accurately detect the longitudinal tear of the belt when the belt conveyor is working, this paper proposes a machine vision detection method that uses line laser to assist the belt surface tearing. The "one" word line laser projects a linear laser stripe onto the underside of the belt, uses a CCD camera to capture the image, and through a series of processing to determine whether longitudinal tearing occurs, and if so, locates the crack. First, the acquired image is pre-processed, the required features are enhanced, the interference is suppressed, and the laser stripe region is extracted, thereby improving the detection efficiency. Then, the image is fitted, rotated, and projected to determine the location of the suspect area. Finally, the threshold method is used to determine whether the suspicious area has a longitudinal tear. The experimental results show that the method is fast and accurate and can meet the requirements of belt inspection.

KEYWORDS

Belt conveyors, longitudinal tear, machine vision