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6 March 2015 Real time measurement for deformation of large expansion frame based on retro-reflective technique and vision method
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Proceedings Volume 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation; 944650 (2015) https://doi.org/10.1117/12.2182420
Event: International Symposium on Precision Engineering Measurement and Instrumentation, 2014, Changsha/Zhangjiajie, China
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.
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Wei Tao, Kai Jiang, and Hui Zhao "Real time measurement for deformation of large expansion frame based on retro-reflective technique and vision method", Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 944650 (6 March 2015); https://doi.org/10.1117/12.2182420
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