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http://dx.doi.org/10.7735/ksmte.2014.23.2.199

Implementation of an Interrogator for the Operationand Measurement of Fiber Bragg Grating Multiplexing Sensor Probes  

Kim, Ji-Dea (Lab. of Machining and Measurement, Chungnam National University)
Lee, Dong-Ju (Dept. of Mechanical Engineering, Chungnam National University)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.23, no.2, 2014 , pp. 199-205 More about this Journal
Abstract
This research focuses on the development of an interrogator that operates and measures fiber Bragg grating(FBG) multiplexing sensor probes for accurate-measurement of the blade deflection in a wind power generator. We designed and fabricated an optical source and spectrum module for the interrogator. Additionally, we verified the wavelength repeatability within 0.001 nm and the wavelength stability within 1 pm of the optical source, and we experimentally determined that the wavelength scanning range was about 44.4 nm. The FBG sensor with 2 nm resolution can be extended to a performance-efficient system that measures more than 20 sensors. The implemented interrogator has 0.141 nm wavelength variations corresponding to an ambient temperature range of $0^{\circ}C$ to $70^{\circ}C$. The measurement error can be easily reduced by employing a temperature compensation algorithm. In this study, we quantitatively confirmed the accuracy and operating stability of the interrogator.
Keywords
Wind power generator blade; Interrogator; Fiber bragg grating sensor; Monitoring system; Wavelength stability; Wavelength division Multiplexing;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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