Journal
SENSORS AND ACTUATORS A-PHYSICAL
Volume 203, Issue -, Pages 341-345Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.sna.2013.09.006
Keywords
Polymer optical fiber; Specklegram; Sensor; Low cost; Extended range
Funding
- [TEC2010-20224-C02-02]
- [AP2009-1403]
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In this paper, a processing scheme based on the morphological similarities of speckle patterns is proposed to extend the dynamic range of Fiber Specklegram Sensors (FSS). The method has been applied to a low cost FSS demonstrating its good performance to extend the dynamic range of strain measurements. The scheme analyzes the pattern energy distribution to establish the current modal state of the FSS and employs the correlation value with the reference modal state specklegram to determine the fine strain measurements. The achieved results exhibit a very high performance, making this low cost technology applicable to structural monitoring. (C) 2013 Elsevier B.V. All rights reserved.
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