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光纤传感系统的校准与部署及其在监测泥石流中的应用。

Calibration and deployment of a fiber-optic sensing system for monitoring debris flows.

机构信息

Department of Hydraulic and Ocean Engineering, National Cheng Kung University, No.1 University Road, Tainan, 70101, Taiwan.

出版信息

Sensors (Basel). 2012;12(5):5835-49. doi: 10.3390/s120505835. Epub 2012 May 7.

DOI:10.3390/s120505835
PMID:22778616
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3386715/
Abstract

This work presents a novel fiber-optic sensing system, capable of monitoring debris flows or other natural hazards that produce ground vibrations. The proposed sensing system comprises a demodulator (BraggSCOPE, FS5500), which includes a broadband light source and a data logger, a four-port coupler and four Fiber Bragg Grating (FBG) accelerometers. Based on field tests, the performance of the proposed fiber-optic sensing system is compared with that of a conventional sensing system that includes a geophone or a microphone. Following confirmation of the reliability of the proposed sensing system, the fiber-optic sensing systems are deployed along the Ai-Yu-Zi and Chu-Shui Creeks in Nautou County of central Taiwan for monitoring debris flows. Sensitivity test of the deployed fiber-optic sensing system along the creek banks is also performed. Analysis results of the seismic data recorded by the systems reveal in detail the frequency characteristics of the artificially generated ground vibrations. Results of this study demonstrate that the proposed fiber-optic sensing system is highly promising for use in monitoring natural disasters that generate ground vibrations.

摘要

本工作提出了一种新颖的光纤传感系统，能够监测产生地面振动的泥石流或其他自然灾害。所提出的传感系统包括解调器（BraggSCOPE，FS5500），它包括宽带光源和数据记录仪、四端口耦合器和四个光纤布拉格光栅（FBG）加速度计。基于现场测试，将所提出的光纤传感系统的性能与包括检波器或麦克风的传统传感系统进行了比较。在确认所提出的传感系统的可靠性之后，将光纤传感系统部署在台湾中南部的南投县的艾雨孜溪和出水里溪，用于监测泥石流。还沿着溪岸进行了部署的光纤传感系统的灵敏度测试。系统记录的地震数据的分析结果详细揭示了人为产生的地面振动的频率特征。本研究的结果表明，所提出的光纤传感系统非常有希望用于监测产生地面振动的自然灾害。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/e74d2814cda1/sensors-12-05835f10a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/056f82ea2bbf/sensors-12-05835f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/3dba44d72352/sensors-12-05835f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/80e95b4ea57d/sensors-12-05835f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/151c9059566f/sensors-12-05835f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/9fcb22dde120/sensors-12-05835f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/92cdb0c19944/sensors-12-05835f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/b2f005b3688d/sensors-12-05835f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/0b968136147b/sensors-12-05835f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/319de44bd756/sensors-12-05835f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/e74d2814cda1/sensors-12-05835f10a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/056f82ea2bbf/sensors-12-05835f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/3dba44d72352/sensors-12-05835f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/80e95b4ea57d/sensors-12-05835f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/151c9059566f/sensors-12-05835f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/9fcb22dde120/sensors-12-05835f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/92cdb0c19944/sensors-12-05835f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/b2f005b3688d/sensors-12-05835f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/0b968136147b/sensors-12-05835f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/319de44bd756/sensors-12-05835f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56ab/3386715/e74d2814cda1/sensors-12-05835f10a.jpg

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