Aiming at the high cost of manual coal tray and the limited accuracy of laser measurement method
a point cloud recognition and volume calculation method of coal pile based on PointCNN network is proposed. Firstly
Euclidean distance is used to segment the original point cloud data of coal pile obtained by millimeter wave radar. Secondly
PointCNN network is used to accurately identify the point cloud data of target coal pile
and Delaunay triangulation algorithm and projection method are used to realize the three-dimensional surface reconstruction of coal pile point cloud data and volume calculation of coal pile. Finally
taking a coal yard of a coal-fired power station as the research object
the proposed method is validated. The results show that compared with traditional measurement methods
the proposed method has higher accuracy
and the relative error is less than 5%
which can meet the volume measurement demand of coal pile in coal yard of coal-fired power station.