A novel Fiber optic sensing system for monitoring debris flows

Chung Ray Chu, Ching Jer Huang, Tsung Mo Tien

研究成果: Conference contribution

摘要

This study presents a novel fiber optic sensing system for monitoring debris flows. Thanks to their light weight, immunity to electromagnetic interference, high sensitivity, and very low optical loss, fiber optic sensors can be potentially utilized to monitor debris flows, which usually occur in mountainous regions far from available electricity. The ground vibrations caused by debris flows can be sensed by a Fiber Bragg Grating (FBG) Accelerometer (Gavea Sensor GS 6500) and the associated light source, and data logger are provided by a Braggscope (Fiber Sensing FS 5500). Four FBG Accelerometers were deployed along the Ai-Yu-Zi Creek and the Chu-Shui Creek in Nan-Tou County, Taiwan, respectively; and the Braggscope was located at the front data-receiving center. The calibration experiment was carried out to compare the performance of FBG accelerometer with other sensors used for detecting debris flows, such as geophone and microphone. The signal-to-noise ratio (SNR) of FBG accelerometer was higher than that of geophone, while the two instruments sensed the same vibration source. The results showed that fiber optic sensing technique could be used as an alternative for monitoring debris flows.

原文English
主出版物標題Landslide Science and Practice
主出版物子標題Early Warning, Instrumentation and Monitoring
發行者Springer Science and Business Media Deutschland GmbH
頁面227-233
頁數7
ISBN(列印)9783642314445
DOIs
出版狀態Published - 2013
事件2nd World Landslide Forum, WLF 2011 - Rome, Italy
持續時間: 2011 十月 32011 十月 9

出版系列

名字Landslide Science and Practice: Early Warning, Instrumentation and Monitoring
2

Other

Other2nd World Landslide Forum, WLF 2011
國家/地區Italy
城市Rome
期間11-10-0311-10-09

All Science Journal Classification (ASJC) codes

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