Technical and Experimental Study of Fiber Bragg Grating Vibration Detection Based on Matching Demodulation Method

摘要：

Compared to the conventional vibration sensor, fiber Bragg grating (FBG) vibration sensor has some more advantages of good ingenious, high sensitivity, interference free of electronic-magnetism, adapt to long-term monitoring, etc. Fiber Bragg grating vibration detection is introduced and its mechanical model of measuring acceleration is established in the paper. A scheme of single point matching FBG demodulation is designed and demonstrated to measure low frequency vibration in construction, rock and soil engineering monitoring and so on. The demodulation of FBG detection is simulated and achieved via mathematical method and experiments. Low frequency vibration signal is modulated sine wave signal, which is analyzed through matching demodulation detection and signal spectrum. The experimental results are in agreement with the simulation, which proves that this method can detect low frequency vibration and is feasible.

关键词： fiber Bragg grating vibration matching demodulation

作者: Qi Jiang Qingmei Sui Jing Wang

作者单位: School of Control Science and Engineering University of ShanDong Jinan , ShanDong Province, China,250061

会议类型: 国际会议

会议名称: 2007 IEEE International Conference on Automation and Lofistics

会议地点: 山东济南

会议语种:英文

在线出版日期: 2007-08-18（万方平台首次上网日期，不代表论文的发表时间）