標題: Transforming an Optical Pick-up-Head into an Accelerometer With UltraHigh Sensitivity
作者: Hung, Shao-Kang
Cheng, Chiao-Hua
Chiang, Ming-Li
Chieh, Jih-Wei
機械工程學系
Department of Mechanical Engineering
關鍵字: Acceleration measurement;CD recording;dynamic response;optical position measurement;vibration measurement
公開日期: 1-Mar-2014
摘要: This paper proposes an accelerometer based on a commercial optical pick-up-head (PUH). An optical PUH is used to be part of an accelerometer by transforming the astigmatic measuring mechanism, the suspending wires, and the objective lens as the displacement sensor, the spring, and the seismic mass, respectively. Instead of adding an extra mass-damper-spring subsystem into the system in previous works, in our design we utilize the four suspending metal wires and the objective lens in an optical PUH. Thus, no extra component is needed and the system is more compact and easy to implement. Experimental results demonstrate that this cost-effective accelerometer has excellent linearity, ultrahigh sensitivity of 114 V/g, and an operating frequency of 20 Hz.
URI: http://dx.doi.org/10.1109/TIM.2013.2282427
http://hdl.handle.net/11536/23769
ISSN: 0018-9456
DOI: 10.1109/TIM.2013.2282427
期刊: IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
Volume: 63
Issue: 3
起始頁: 687
結束頁: 693
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