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Proceedings Paper

Development of a dual-axis optoelectronic precision level
Author(s): Kuang-Chao Fan; Tsung-Han Wang; Sheng-Yi Lin; Yen-Chih Liu
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Paper Abstract

This paper presents the design principle and applications of a innovative dual-axis optoelectronic level. A commercially available DVD pickup head is adopted as the angle sensor in association with the double-layer pendulum mechanism for dual-axis swings. A mass-damping system is analyzed to model the mechanical dynamics. Measured angles of both axes are processed by a microprocessor and displayed on a LCD or exported to an external PC. Compared with a triple-beam laser angular interferometer, the error of the dual-axis optoelectronic level is better than ±0.5 arc-seconds in the measuring range of ±20 arc-seconds, and the settling time is within 0.5 sec. Two experimental results show the consistency with a Renishaw interfereometer and its practical use in industry.

Paper Details

Date Published: 15 November 2011
PDF: 9 pages
Proc. SPIE 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 83213H (15 November 2011); doi: 10.1117/12.905323
Show Author Affiliations
Kuang-Chao Fan, National Taiwan Univ. (Taiwan)
Tsung-Han Wang, National Taiwan Univ. (Taiwan)
Sheng-Yi Lin, National Taiwan Univ. (Taiwan)
Yen-Chih Liu, Metal Industries Research and Development Ctr. (Taiwan)

Published in SPIE Proceedings Vol. 8321:
Seventh International Symposium on Precision Engineering Measurements and Instrumentation
Kuang-Chao Fan; Man Song; Rong-Sheng Lu, Editor(s)

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