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ID 116471
著者
Sung, Jiun-Yu National Taiwan University of Science and Technology
Chen, Jin-Kai National Taiwan University of Science and Technology
Liaw, Shien-Kuei National Taiwan University of Science and Technology
キーワード
optical sensing
fiber Bragg grating (FBG)
peak detection
fitting
regression
filtering
資料タイプ
学術雑誌論文
抄録
Fiber Bragg gratings (FBGs) are widely applied in optical sensing systems due to their advantages including being simple to use, high sensitivity, and having great potential for integration into optical communication systems. A common method used for FBG sensing systems is wavelength interrogation. The performance of interrogation based sensing systems is significantly determined by the accuracy of the wavelength peak detection processing. Direct maximum value readout (DMVR) is the simplest peak detection method. However, the detection accuracy of DMVR is sensitive to noise and the sampling resolution. Many modified peak detection methods, such as filtering and curve fitting schemes, have been studied in recent decades. Though these methods are less sensitive to noise and have better sensing accuracy at lower sampling resolutions, they also confer increased processing complexity. As massive sensors may be deployed for applications such as the Internet of things (IoT) and artificial intelligence (AI), lower levels of processing complexity are required. In this paper, an efficient scheme applying a three-point peak detection estimator is proposed and studied, which shows a performance that is close to the curve fitting methods along with reduced complexity. A proof-of-concept experiment for temperature sensing is performed. 34% accuracy improvement compared to the DMVR is demonstrated.
掲載誌名
Sensors
ISSN
14248220
出版者
MDPI
21
7
開始ページ
2306
発行日
2021-03-25
権利情報
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
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出版社版DOI
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言語
eng
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部局
理工学系