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Proceedings Paper

Real time measurement for deformation of large expansion frame based on retro-reflective technique and vision method
Author(s): Wei Tao; Kai Jiang; Hui Zhao
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Paper Abstract

Large frames made of compound material are widely used in many areas such as industry and aerospace. To ensure the frames working properly, monitor of its deformation after expansion is of great importance. A real time measurement system based on retro-reflective technique and vision method is proposed. Several round retro-reflective marks are placed on some defined positions of the frame as mark points which can precisely describe the shape of the frame. The marks are illuminated by laser beams and the image of the marks is captured by a camera. The positions of the marks on the camera are determined by designed image process program. Experimental results show that the whole process can be finished within 0.1 second. The designed system can measure the deformation of up to 50mm and the accuracy of the measurement is better than 0.02 mm.

Paper Details

Date Published: 6 March 2015
PDF: 7 pages
Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 944650 (6 March 2015); doi: 10.1117/12.2182420
Show Author Affiliations
Wei Tao, Shanghai Jiao Tong Univ. (China)
Kai Jiang, Shanghai Jiao Tong Univ. (China)
Hui Zhao, Shanghai Jiao Tong Univ. (China)


Published in SPIE Proceedings Vol. 9446:
Ninth International Symposium on Precision Engineering Measurement and Instrumentation
Junning Cui; Jiubin Tan; Xianfang Wen, Editor(s)

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