Integration and application of a fiber-optic sensing system for monitoring debris flows

Ching Jer Huang, Chung Ray Chu, Tsung Mo Tien, Hsiao Yuen Yin

研究成果: Article

2 引文 斯高帕斯(Scopus)

摘要

This study presents an innovative fiber-optic sensing system for monitoring debris flows. The system mainly comprises an interrogator and four fiber Bragg grating accelerometers. The field tests show that signal-to-noise-ratio (SNR) of the fiber-optic sensor is 10 dB higher than that of a geophone. Following confirmation of the reliability of the proposed sensing system, the systems are deployed along the Ai-Yu-Zi and Chu-Shui Creeks in Nautou County, Taiwan, for monitoring debris flows. The four accelerometers are installed in series. The systems have detected several debris flows in 2012. The monitored data reveal that the frequency range of the acceleration of ground vibration is 10-150 Hz, which is the same as that of the velocity of ground vibration detected by a sensing system that includes geophones. Because the fiber-optic sensing system is more sensitive than the geophone system, the proposed fiber-optic sensing system is highly promising for use in monitoring natural disasters that generate ground vibrations.

原文English
頁(從 - 到)191-201
頁數11
期刊Journal of Chinese Soil and Water Conservation
44
發行號3
出版狀態Published - 2013 九月 1

All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Geotechnical Engineering and Engineering Geology
  • Soil Science
  • Earth-Surface Processes

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