Coal Flow Volume Measurement of Belt Conveyor Based on Binocular Vision and Line Structured Light

This paper presents a volume measurement method for belt conveyor based on binocular vision and line structured light. The line laser stripe images of coal flow surface are collected by binocular camera, and the surface height of coal flow is measured by extracting laser stripe. First, the calibrated binocular camera is used to collect the laser stripe images of coal flow. Second, the laser stripes are extracted from the images and the spatial coordinates of the points on it are calculated. Third, after the cross-sectional area of coal flow is calculated by laser stripe, the coal flow volume can be obtained by integrating with the belt transmission speed. Two foam models are used to verify the accuracy of the system. The average error of volume measurement is less than 2%.