Laser & Optoelectronics Progress, Volume. 58, Issue 24, 2415001(2021)
Research on Guidance Method of Double Shield TBM Based on Monocular Vision
Aiming at the problems of complex structure, poor reliability, high cost, and low accuracy in the front shield/support shield pose measurement methods in the existing dual shield tunnel boring machine (TBM) guidance system, this paper proposes a new method for non-contact rapid measurement based on industrial cameras and special-shaped active targets. This method uses technologies such as machine vision, spatial pose transformation, and multi-sensor fusion/calibration to realize the function of stably guiding the dual-shield TBM in the state of strong vibration tunneling. The experimental results show that the proposed method can achieve the high-performance measurement of the six-degree-of-freedom space pose of the front shield/support shield, the measurement frequency is not less than 20 Hz, and the measurement error of the feature point coordinates of the shield machine in a static state is less than 5 mm@(3 m×2 m×6 m), the measurement error under vibration is less than 10 mm@(amplitude is 3 mm, frequency is 20 Hz), which can be used in the double shield TBM guidance system.
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Zhe Huang, Erjing Cheng, Zhenyu Shao, Wenyang Du, Xuye Zhao, Qingde Yan. Research on Guidance Method of Double Shield TBM Based on Monocular Vision[J]. Laser & Optoelectronics Progress, 2021, 58(24): 2415001
Category: Machine Vision
Received: Dec. 27, 2020
Accepted: Mar. 2, 2021
Published Online: Nov. 29, 2021
The Author Email: Huang Zhe (huangzhe@tust.edu.cn)