Damage Detection Based on 3D Point Cloud Data Processing from Laser Scanning of Conveyor Belt Surface

Abstract

Usually, substantial part of a mine haulage system is based on belt conveyors. Reliability of such system is significant in terms of mining operation continuity and profitability. Numerous methods for conveyor belt monitoring have been developed, although many of them require physical presence of the monitoring staff in the dangerous environment. In this paper, a remote sensing method for assessing a conveyor belt condition using the Terrestrial Laser Scanner (TLS) system has been described. For this purpose a methodology of semi-automatic processing of point cloud data for obtaining the belt geometry has been developed. The sample data has been collected in a test laboratory and processed with the proposed algorithms. Damaged belt surface areas have been successfully identified and edge defects were investigated. The proposed non-destructive testing methodology has been found to be suitable for monitoring the general condition of the conveyor belt and could be exceptionally successful and cost-effective if combined with an unmanned, robotic inspection system.

Simple Design Solution for Harsh Operating Conditions: Redesign of Conveyor Transfer Station with Reverse Engineering and DEM Simulations

“…The current status of the development trends in, and the potential for, TLS application in mining areas were described in detail in [21]. Based on active sensors, LiDAR techniques help to detect the shape of the object, which can be transported by the conveyor belt [22] and detect the damage [23]. In the present case study, the acquired point cloud allowed the building of a 3D BIM model in order to reconstruct the shape of the analyzed equipment (transfer station).…”

Wide-area Operation Monitoring of Conveyors Using a Panoramic Vibration Camera

“…Various examples of these incidents have been reported. 5,6) Contact sensors using radio frequency identification (RFID) tags, 7,8) non-contact sensors such as electromagnetic sensors 9,10) and optical fibers, 11) optical non-contact measurements such as laser scanners, 12) thermographic cameras, 13,14) and video cameras, 15,16) are widely used for measuring the conveyer operation status. These contact and non-contact sensors requiring direct or near-side installation of the measurement object can realize high-precision measurements.…”

“…The panoramic vibration camera used in this study is an extended system of the mirror-drive high-speed active vision system 12) by implementing a vibration imaging function as real-time high-frame-rate video processing. Figure 1 shows an overview of the panoramic vibration camera.…”

“…Panoramic Scanning Similar to the vibration measurement of conveyor pillars with a mirror-drive high-speed active vision system, 12) a panoramic image to confirm that the measurable area is generated by ultrafast image scanning using a galvanomirror as a preprocessing, and the pan and tilt angles to observe multiple rollers at different positions were manually deter- mined to monitor their rotation status. First, the viewpoint direction is switched at time intervals τ by clockwise-scanning a mirror with image capturing in the IJ direction (pan direction I, and tilt direction J ).…”

Identifying and Characterizing Conveyor Belt Longitudinal Rip by 3D Point Cloud Processing

“…In contrast to the image processing method, which extracts characteristics from the color or brightness of pixels in the two-dimensional images, the method based on point cloud processing deals with a set of three-dimensional point coordinates [ 21 , 22 ]. It means that this method can achieve more accurate data acquisition and three-dimensional measurement of object surface [ 23 , 24 , 25 ].…”