Rockfall Hazard Alarm Strategy Based on FBG Smart Passive Net Structure
Rockfall Hazard Alarm Strategy Based on FBG Smart Passive Net Structure作者机构：National Engineering Laboratory for Fiber Optic Sensing Technology Wuhan University of Technology Wuhan430070 China Wuhan WUTOS Limited Company Wuhan 430223 China Key Laboratory of Fiber Optic Sensing Technology and Information Processing Ministry of Education WuhanUniversity of Technology Wuhan 430070 China
出 版 物：《Photonic Sensors》 (光子传感器（英文版）)
年 卷 期：2015年第5卷第1期
页 面：19-23页
核心收录：
学科分类：070207[理学-光学] 07[理学] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学]
基 金：The research work reported in this paper was supported by the National Engineering Laboratory for Fiber Optic Sensing Technology Wuhan University of Technology China. Thanks for the support of the Fundamental Research Funds for the Central Universities (WUT: 2014-IV-090) and the National Natural Science Foundation of China (Major Program: 61290310)
主 题：Passive net rockfall hazard fiber Bragg grating disaster alarm strategy tunnel portal
摘 要：In order to realize working state remote monitoring for a passive net, alarm timely and correctly for the rockfall invasion, and solve the disadvantages in the existing means, such as needing power supply in situ, vulnerability to electromagnetic interference and environmental climate impact, a smart passive net structure based on the optical fiber sensing technology was designed which equipped with intercepting and sensing functions. The wire rope net as one part of the smart passive net was weaved with two kinds of optical fiber sensing elements, namely, fiber Bragg grating （FBG） perimeter severity sensors and optical fiber monitoring net with each end of the tail fiber containing an FBG probe. Based on the proposed smart structure, a combination alarm strategy for rockfall was proposed, which can distinguish transmission bug, whether the rockfall invasion or net broken occurs. Through a designed simulation test, the effectiveness of the proposed alarm strategy was certificated.
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