Car window antitrapping optical fiber system based on a fiber speckle pattern

A car window antitrapping optical fiber system based on a speckle pattern from a multimode fiber installed in the window frame is proposed and demonstrated. The speckle pattern change is measured by an array of photodiodes whose output signal data are processed by computer through an analog-to-digit...

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Bibliographic Details
Published in:Optical Engineering 2004-05, Vol.43 (5), p.1148-1151
Main Authors: Lim, Jong Hoon, Kim, Gil Hwan, Lim, Gun, Cho, Joon Yong, Lee, Kyung Shik
Format: Article
Language:English
Subjects:
car window antitrapping system
fiber sensor
fiber speckle pattern
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Summary:A car window antitrapping optical fiber system based on a speckle pattern from a multimode fiber installed in the window frame is proposed and demonstrated. The speckle pattern change is measured by an array of photodiodes whose output signal data are processed by computer through an analog-to-digital (A/D) converter to control the window motor. Experimental results show that the proposed system with multiple photodiodes, along with an appropriate processing algorithm, runs well. The processing algorithm is also presented. ©
ISSN:0091-3286
1560-2303
DOI:10.1117/1.1690279