光纤光栅论文：光纤光栅位移传感系统开发及在海底隧道安全监测中的应用研究【DOC精选】.doc

光纤光栅论文：光纤光栅位移传感系统开发及在海底隧道安全监测中的应用研究 【中文摘要】海底隧道不占地,不妨碍航行,不影响生态环境,不受天气和气候变化影响,是一种非常安全的全天候的海峡通道。但是它在给人类带来了巨大便利和财富的同时,也存在一定的风险,很可能会造成巨大的经济损失,甚至是灾难性的后果,因此海底隧道的安全监测至关重要。为了实现对海底隧道的安全监测,本课题研制出一种新型的光纤光栅位移传感器,通过海底隧道模型试验,验证其性能.。论文首先介绍了光纤光栅的,位移传感器的应用现状。基于光纤光栅传感技术提出了一种利用光纤光栅位移传感对海底隧道进行安全监测的方案。该方案采用光纤光栅作为传感元件,利用波分复用技术实现对海底隧道围岩变化的实时在线监测。经过各方面的准备以及对海底隧道工程的研究,根据工程的要求,设计了相应的硬件系统。主要包括：光纤光栅位移传感器设计、传感器在隧道模型试验中的埋设以及解调系统的安装。本文介绍了海底隧道模型的制作过程,海底隧道的挖掘过程,以及整个过程中,光纤光栅位移传感器的信号监测。本系统的软件主要论述了海底隧道中光纤光栅位移传感网络的实现,介绍了实时曲线监测、数据存储以及历史数据查询。该系统现场进行了长期运行,结果表明系统运行稳定可靠,效果良好。 【英文摘要】The undersea tunnel is a very safe all-weather strait tunnel, which doesn’t occupy space and doesn’t hinder the voyage and doesn’t influence the ecological environment. However, it not only brings great convenience and wealth to people, but also has some risks, for example, it is likely to cause great economic losses, even catastrophic consequences. Therefore, the health monitoring of undersea tunnel is very important. In order to achieve the safe monitoring of undersea tunnel, the subject has developed a new type of fiber bragg grating displacement sensor, which was tested through the undersea tunnel model to verify its performance.The paper firstly introduces the background of fiber bragg grating, the application of displacement sensor, then presents a scheme about safety monitoring for the undersea tunnel using fiber bragg grating displacement sensing based on fiber bragg grating sensing technology. The scheme adopts the fiber bragg grating as sensing component and WDM technology to realize the on-line monitoring for changes of surrounding rock in underseal tunnel.After all aspects of preparation and the research of undersea tunnel project, according to the requirement of the project, this paper has designed the corresponding hardware system which mainly includes design of fiber bragg grating displacement sensors, embedding of sensors in the tunnel model test and installation of demodulation system.This paper introduces the p