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Proceedings Paper

In-situ optical measurement of separation angles between bifacial lines in large scale space
Author(s): H. W. Zhang; G. X. Zhang; Z. R. Qiu; W. C. Hu; M. Liu
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Paper Abstract

An optical method is proposed for in-situ measurement of angles of space elements separated at a distance of several or several tens of meters. When it is necessary to measure large objects or geometrical elements within a large scale space, it is not always possible to bring these workpieces to conventional coordinate measuring machines (CMMs) which are widely used in industries. Mobile measuring systems provide ideal solutions for these applications. The basic idea of the presented research work is to set up the multiple common optical references through which the dimensional inspections of separation angles of bifacial lines in a large scale space can be fulfilled. The angles between the projection light and each element can be captured through a machine vision system, and thereafter the angles between those corresponding elements can be determined using the geometrical principles. The method and the calibration approach have been validated on our designed work station.

Paper Details

Date Published: 28 December 2010
PDF: 6 pages
Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 754404 (28 December 2010); doi: 10.1117/12.885384
Show Author Affiliations
H. W. Zhang, Tianjin Univ. (China)
G. X. Zhang, Tianjin Univ. (China)
Z. R. Qiu, Tianjin Univ. (China)
W. C. Hu, Tianjin Univ. (China)
M. Liu, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 7544:
Sixth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Xianfang Wen, Editor(s)

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