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Proceedings Paper

Development of a two-dimensional optical accelerometer using a DVD pick-up head
Author(s): Chih-Liang Chu; Cha-Hao Lin; Kuang-Chao Fan
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Paper Abstract

This study develops a low-cost, highly sensitive two-dimensional optical accelerometer based on a commercially available DVD optical pick-up head. Vibrations of the structure of interest cause a change in the angle of the seismic mass within the accelerometer. The relative movement between the seismic mass and the base produces a change in the distribution of a focused light spot on the surface of a four-quadrant photodetector. The resulting change in the voltage signals output by the photodetector is then used to calculate the corresponding acceleration of the base. The experimental results indicate that the sensitivities of the accelerometer in the X- and Y-axis directions are 22.9 V/g and 21.3 V/g, respectively.

Paper Details

Date Published: 13 October 2006
PDF: 6 pages
Proc. SPIE 6280, Third International Symposium on Precision Mechanical Measurements, 62801M (13 October 2006); doi: 10.1117/12.716565
Show Author Affiliations
Chih-Liang Chu, Southern Taiwan Univ. of Technology (Taiwan)
Cha-Hao Lin, Southern Taiwan Univ. of Technology (Taiwan)
Kuang-Chao Fan, National Taiwan Univ. (Taiwan)

Published in SPIE Proceedings Vol. 6280:
Third International Symposium on Precision Mechanical Measurements
Kuang-Chao Fan; Wei Gao; Xiaofen Yu; Wenhao Huang; Penghao Hu, Editor(s)

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