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Proceedings Paper

Research on large spatial coordinate automatic measuring system based on multilateral method
Author(s): Dongjing Miao; Jianshuan Li; Lianfu Li; Yuanlin Jiang; Yao Kang; Mingzhao He; Xiangrui Deng
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Paper Abstract

To measure the spatial coordinate accurately and efficiently in large size range, a manipulator automatic measurement system which based on multilateral method is developed. This system is divided into two parts: The coordinate measurement subsystem is consists of four laser tracers, and the trajectory generation subsystem is composed by a manipulator and a rail. To ensure that there is no laser beam break during the measurement process, an optimization function is constructed by using the vectors between the laser tracers measuring center and the cat's eye reflector measuring center, then an orientation automatically adjust algorithm for the reflector is proposed, with this algorithm, the laser tracers are always been able to track the reflector during the entire measurement process. Finally, the proposed algorithm is validated by taking the calibration of laser tracker for instance: the actual experiment is conducted in 5m × 3m × 3.2m range, the algorithm is used to plan the orientations of the reflector corresponding to the given 24 points automatically. After improving orientations of some minority points with adverse angles, the final results are used to control the manipulator's motion. During the actual movement, there are no beam break occurs. The result shows that the proposed algorithm help the developed system to measure the spatial coordinates over a large range with efficiency.

Paper Details

Date Published: 15 October 2015
PDF: 7 pages
Proc. SPIE 9676, AOPC 2015: Optical Design and Manufacturing Technologies, 967611 (15 October 2015); doi: 10.1117/12.2202436
Show Author Affiliations
Dongjing Miao, National Institute of Metrology (China)
Jianshuan Li, National Institute of Metrology (China)
Lianfu Li, National Institute of Metrology (China)
Yuanlin Jiang, National Institute of Metrology (China)
Yao Kang, National Institute of Metrology (China)
Mingzhao He, National Institute of Metrology (China)
Xiangrui Deng, National Institute of Metrology (China)

Published in SPIE Proceedings Vol. 9676:
AOPC 2015: Optical Design and Manufacturing Technologies
Lin Li; Kevin P. Thompson; Ligong Zheng, Editor(s)

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