Yang, W, Zhang, X, Ma, H and Zhang, G (2019) Infrared LEDs-based pose estimation with underground camera model for Boom-type roadheader in coal mining. IEEE Access, 7. pp. 33698-33712. ISSN 2169-3536

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Abstract

Accurate and reliable pose estimation of boom-type roadheader is of great importance in order to maintain the efficiency of automatic coal mining. The stability and accuracy of conventional measurement methods are difficult to be guaranteed on account of vibration noise, magnetic disturbance, electrostatic interference and other factors in underground environment. In this paper a vision-based non-contact measurement method for cutting-head pose estimation is presented, which deploy a 16-point infrared LED target on the boom-type roadheader to tackle the low illumination, high dust and complicated background. By establishing monocular vision measurement system, the cutting-head pose is estimated through processing the LED target images obtained from an explosion-proof industrial camera mounted on the roadheader. After analyzing the measurement mechanism, an underground camera model based on the equivalent focal length is built to eliminate refraction errors caused by the two layer glasses for explosion-proof and dust removal glasses. Then the pose estimation processes, including infrared LEDs feature points extraction, spot center location, improved P4P method based on dual quaternions, are carried out. The influence factors of cutting-head pose estimation accuracy is further studied by modeling, and the error distribution of the main parameters is investigated and evaluated. Numerical simulation and experimental evaluation are designed to verify the performance of the proposed method. The results show that the pose estimation error is in line with the numerical prediction, achieving the requirements of cutting-head pose estimation in underground roadway construction in coal mine.

Item Type:	Article
Additional Information:	(c) 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TN Mining engineering. Metallurgy
Divisions:	Engineering
Publisher:	Institute of Electrical and Electronics Engineers (IEEE)
Date Deposited:	13 Mar 2019 10:28
Last Modified:	04 Sep 2021 09:38
DOI or ID number:	10.1109/ACCESS.2019.2904097
URI:	https://researchonline.ljmu.ac.uk/id/eprint/10302

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