Optical fiber grating strain acceleration sensors ground vibration experimental research

摘要：

Experiments exhibit that the lighter fiber grating sensor is more advantageous to couple with the earth. In order to reduce the sensor coupling with the atmosphere, different sensitivity sensors are embedded underground. The experimental data show that reducing the sensor resonant frequency can improve the SNR of the system, but restrict the high frequency signals, and reduce the precision of P wave first arrival time pick. Experiments show the fiber grating sensor whose resonance frequency is 180 Hz can get a higher sensitivity and receive higher frequency microseismic signals at the same time. On the premise of good coupling, signal quality monitored by fiber grating sensors reaches the piezoelectric sensors monitoring level.

关键词： fiber grating sensor coupling resonance frequency piezoelectric sensor tailcone hammering source

作者: Guang-Dong Song Jin-Yu Wang Tong-Yu Liu Chang Wang Lu Lu

作者单位: Key Laboratory of Optical Fiber Sensoring Technology of Shandong Province, Jinan, 250014, China Lase Beijing Balas Investment Consultion Co.Ltd, Beijing, 100044, China

会议类型: 国际会议

会议名称: The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)

会议地点: 北京

会议语种:英文

页码: 812-821

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）