A novel stereoscopic 3D motion measurement using bi-axial optical system with one image sensor for remote machine health monitoring

Jeongmin Kim; Dohyun Kim; Jin Kim; Yong-Hwa Park

doi:10.1117/12.3002065

12 March 2024 A novel stereoscopic 3D motion measurement using bi-axial optical system with one image sensor for remote machine health monitoring

Jeongmin Kim, Dohyun Kim, Jin Kim, Yong-Hwa Park

Author Affiliations +

Proceedings Volume 12899, MOEMS and Miniaturized Systems XXIII; 128990I (2024) https://doi.org/10.1117/12.3002065
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Looseness of belt-pulley which are employed in industrial applications such as compressor and fan is important factor for safe machine operation. In conventional method, current/vibration sensors are attached for regularly inspecting the belt looseness. In contrast, this paper proposes a novel remote sensing method for machine health monitoring, utilizing a biaxial optical system. The bi-axial optical system consists of two groups of reflectors to accommodate stereoscopic images with disparity so that it enables 3D motion measurement with only one image sensor. 3D trajectory of belt can be reconstructed using bi-axial optical system and one image sensor. To improve the 3D accuracy of trajectory, camera calibration algorithms is improved by setting virtual left and right camera parameters to be identical considering the left and right images captured by single image sensor. As a result, 3D accuracy was more improved by 15.75% compared to Zhang’s method. For the actual experiment, four looseness level (normal, slight, moderate, severe damaged) of the belt were monitored. As the looseness level increased, the 3D trajectory of the belt exhibited a curved shape with noticeable quantitative differences. The result shows that the proposed architecture can be utilized to remote machine health monitoring with mobile image sensors.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jeongmin Kim, Dohyun Kim, Jin Kim, and Yong-Hwa Park "A novel stereoscopic 3D motion measurement using bi-axial optical system with one image sensor for remote machine health monitoring", Proc. SPIE 12899, MOEMS and Miniaturized Systems XXIII, 128990I (12 March 2024); https://doi.org/10.1117/12.3002065

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