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Sensors 2009, 9(12), 10411-10422; doi:10.3390/s91210411

Novel Absolute Displacement Sensor with Wide Range Based on Malus Law

The State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China
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Received: 16 October 2009 / Revised: 5 November 2009 / Accepted: 7 December 2009 / Published: 21 December 2009
(This article belongs to the Section Chemical Sensors)
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Abstract

The paper presents a novel wide range absolute displacement sensor based on polarized light detection principle. The sensor comprises of two sets of polarized light detecting systems which are coupled by pulleys. The inherent disadvantage in optic system like light source intensity drift is solved and absolute measurement with wide-range is achieved. A prototype and the relevant test bed have been built. The test results are in good agreement with expectation. Its measurement range is 540 mm, and its linearity is better than 0.05%. View Full-Text
Keywords: displacement sensor; wide range; polarized light; light source drift; absolute measurement displacement sensor; wide range; polarized light; light source drift; absolute measurement
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Li, W.; Lu, X.; Lin, Y. Novel Absolute Displacement Sensor with Wide Range Based on Malus Law. Sensors 2009, 9, 10411-10422.

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