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Low Speed Weigh-In Motion System Using Multi-FBG Sensors  

Lee Hojoon (Optical Communication Lab., Dept. of Information Communication Eng., Hoseo Univ.)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.41, no.1, 2004 , pp. 21-28 More about this Journal
Abstract
We have demonstrated a low speed weigh-in motion system using FBG sensors and performed field test at a trial road. Technique, called identical chirped grating interrogation, have used for a demodulation relying on the mismatching of two identical broadband chirped gratings. We compensated the fluctuation of LED power and the temperature of sensor and used a lock-in amplifier to reduce effect of noise. We could design a bending plate that the measurement results are independent of position of weight. The FBG sensors weigh-in motion system showed linearity and reproducibility.
Keywords
Fiber Bragg grating; optical fiber sensors; FBG sensor; sensor signal Processing; weigh-in motion;
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