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Proceedings Paper

Research on signal processing system in smart clothes based on FBG
Author(s): Cheng Zhang; Chang-yun Miao; Hui-chao Song; Hong-qiang Li; Bo-ya Shi; Fan-jie Xu
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Paper Abstract

Based on optical fiber grating sensing technology, the signal processing system of smart clothes was designed. The clothes embedded in fiber Bragg gratings (FBGs) sensor can measure the body physiological parameters, such as temperature, and detect the healthy condition of wearer. The paper presented FBG wavelength detection and signal processing methods with wearable characteristics, designed optical scheme and demodulated circuit in terms of tunable F-P filer wavelength demodulation theory. The numerical arithmetic of processing wavelength data was researched and realized in ARM. By testing, the measuring scope of wavelength is from 1520.5 to 1562nm, and the resolution of wavelength can arrive at 2pm. By selecting appropriate center wavelength of sensing gratings and referenced gratings, the relative error of wavelength can less than 0.001%. The signal processing system can adjust the excursion of F-P cavity timely, and has characters of portability, wireless data transmission.

Paper Details

Date Published: 30 December 2008
PDF: 8 pages
Proc. SPIE 7268, Smart Structures, Devices, and Systems IV, 72681G (30 December 2008); doi: 10.1117/12.812074
Show Author Affiliations
Cheng Zhang, Tianjin Polytechnic Univ. (China)
Chang-yun Miao, Tianjin Polytechnic Univ. (China)
Hui-chao Song, Tianjin Polytechnic Univ. (China)
Hong-qiang Li, Tianjin Polytechnic Univ. (China)
Bo-ya Shi, Tianjin Polytechnic Univ. (China)
Fan-jie Xu, Tianjin Polytechnic Univ. (China)

Published in SPIE Proceedings Vol. 7268:
Smart Structures, Devices, and Systems IV
Said Fares Al-Sarawi; Vijay K. Varadan; Neil Weste; Kourosh Kalantar-Zadeh, Editor(s)

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