Volume measurement of soil in excavator buckets by solid-state 3D LiDAR
摘要
Efficient material handling during construction operations is essential for minimizing construction costs, optimizing resource utilization, and reducing environmental impact. This study introduces a novel methodology that employs 3D solid-state time-of-flight LiDAR technology for real-time estimation of soil volume within an excavator bucket. Unlike traditional measurement approaches, this system utilizes a LiDAR sensor, which in this setup is mounted on the cabin to enhance accuracy and efficiency. The volume calculation is performed using two computational methods: Delaunay triangulation and Geom3D. The error analysis reveals that the Geom3D method achieves an average accuracy of 96% for bucket fill factors up to 50%, while Delaunay triangulation is optimal for higher fill levels, maintaining a similar accuracy rate of 96%. These findings highlight the distinct computational efficiencies of each method within their respective operational ranges. The solid-state 3D LiDAR technology is characterized by its high precision, real-time data processing, absence of mechanical components, and robustness in low-light conditions, eliminating the need for frequent calibration. Beyond excavator applications, the proposed method has the potential to improve automation in other industrial sectors, including mining, construction, civil engineering, and agriculture, by providing accurate, real-time volume estimations for mobile machinery such as loaders, tractors, dredgers, and backhoes.