Gaining valuable insights into excavation material properties, including type, density, cohesion, and size distribution, can enhance the efficiency of various operations in sectors like mining, construction, aggregate handling, and space exploration and development. This research explores using proprioceptive sensing and wavelet analysis for automatic classification of fragmented rock, suitable for environments with poor visibility. Experiments with small and large equipment demonstrate the potential of custom wavelet features in estimating rock size distribution, offering a promising new technique for mean rock size estimation using only proprioceptive information.
![Unal with dump truck.](/offroad-robotics/sites/orrwww/files/styles/image_gallery_thumbnail/public/2024-06/IMG_2730.jpeg?h=71976bb4&itok=l2ibCCnB)
![Loader dumping in truck.](/offroad-robotics/sites/orrwww/files/styles/image_gallery_thumbnail/public/2024-06/IMG_2741%202.jpeg?h=71976bb4&itok=HViBEA8l)
![Josh taking a selfie with dump truck.](/offroad-robotics/sites/orrwww/files/styles/image_gallery_thumbnail/public/2024-06/IMG_2733.jpeg?h=bd45de3c&itok=XkmaD7Z2)
![FragX sensor on loader bucket.](/offroad-robotics/sites/orrwww/files/styles/image_gallery_thumbnail/public/2024-06/IMG_2722.jpeg?h=71976bb4&itok=2D2fLbSj)
Related Publications
U. Artan. Automatic Classification of Fragmented Rock using Proprioceptive Sensing. Ph.D. Thesis, The Robert M. Buchan Department of Mining, Queen’s University, October 2022.
U. Artan, H. Fernando, and J. A. Marshall. Automatic material classification via proprioceptive sensing and wavelet analysis during excavation. In Proceedings of the 2021 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), Delft, The Netherlands, July 12, 2021. DOI: 10.1109/AIM46487.2021.9517696
U. Artan and J. A. Marshall. Towards automatic classification of fragmented rock piles via proprioceptive sensing and wavelet analysis. In Proceedings of the 2020 IEEE Conference on Multisensor Fusion and Integration for Intelligent Systems, Karlsruhe, Germany, September 2020. DOI: 10.1109/MFI49285.2020.9235261
Project Funding
This project was funded in part by the NSERC Canadian Robotics Network (NCRN) as well as generous time on equipment and technical assistance for field work from Epicoc AB (Sweden).