Development of a dual-axis optoelectronic precision level

Kuang-Chao Fan; Tsung-Han Wang; Sheng-Yi Lin; Yen-Chih Liu

doi:10.1117/12.905323

15 November 2011 Development of a dual-axis optoelectronic precision level

Kuang-Chao Fan, Tsung-Han Wang, Sheng-Yi Lin, Yen-Chih Liu

Proceedings Volume 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation; 83213H (2011) https://doi.org/10.1117/12.905323
Event: Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 2011, Yunnan, China

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.

Citation Download Citation

Kuang-Chao Fan, Tsung-Han Wang, Sheng-Yi Lin, and Yen-Chih Liu "Development of a dual-axis optoelectronic precision level", Proc. SPIE 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 83213H (15 November 2011); https://doi.org/10.1117/12.905323

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