P-OTDR在电力光缆与铁路周界中的安防应用

发布时间：2019-01-07 12:22

【摘要】：随着社会的发展,人们对安全的需求也越来越高,世界范围内对入侵监测传感系统的研究热情也有着明显增长,通信部门对于自己内部的通信建筑及外部的通信光缆都需要进行实时的入侵监测或故障诊断;运输部门为了增加对乘客,资产和基础设施的保护,也对火车站、铁路周界沿线、隧道等进行实时的入侵监测;石油天然气等产业也对自己的运输管道状态进行监测,以达到防盗防破坏的目的;甚至国家的边境线上也安装了入侵监测系统,防止不法分子入境。在上述情况下入侵监测系统可以用来避免人员伤亡,保护财产被盗或破坏等。传统的入侵监测技术如人类卫队,脉冲式电子围栏,微波传感器,超声波传感报警器,弦线传感器,主动红外报警器等等,都存在某些不足或环境的不适用分布式光纤振动传感技术利用光纤本身的传输特性,将光纤上每一点都看做一个传感单元进而达到全分布式监测的目的。光纤既作为传感单元,又作为信号传输介质,结构简单,易于部署,抗电磁干扰,且可对空间进行连续性监测,在长距离周界安防、输电线缆、海底光缆等安全监测方面具有很好的应用前景。对于此本文的主要工作包括以下几个方面:1.研究分布式光纤振动传感机理。(对应变与光纤的作用机理、瑞利散射现象及原理,并对基于瑞利散射效应的光时域反射传感系统进行分析)。2.基于 P-OTDR(Polarization Sensitive Optical Time Domain reflectometer)的传感原理设计并实现周界安防监测系统,并结合理论和实验计算出系统的参数指标。3.多通道周界安防监测系统与在电力通信光缆的安全监测中的应用研究,基于Visual C++实现扰动监测系统报警软件并结合RFID管道定位技术和短信猫实现了线路巡检和实时短信报警的功能。4.周界安防监测系统在铁路周界安防监测中的应用研究。基Visual C++实现扰动监测系统报警软件,并联动视频监控及短信猫无线通信等功能模块。实现全方位、可视化综合监测。
[Abstract]:With the development of society, people's demand for security is higher and higher, and the enthusiasm for intrusion detection sensing system is also increasing in the world. Communication departments need real-time intrusion monitoring or fault diagnosis for their internal communication buildings and external communication cables. In order to increase the protection of passengers, assets and infrastructure, the transport sector also carries out real-time intrusion monitoring of railway stations, railway perimeter lines, tunnels, etc. Industries such as oil and gas also monitor their transportation pipeline status in order to prevent theft and destruction; even the border of the country has installed intrusion monitoring system to prevent illegal elements from entering the country. In these cases, intrusion detection system can be used to avoid casualties, to protect property stolen or damaged, etc. Traditional intrusion detection techniques such as human guard, pulse electronic fence, microwave sensor, ultrasonic sensor alarm, string sensor, active infrared alarm, etc. There are some shortcomings or unsuitable environment of distributed optical fiber vibration sensing technology. Using the transmission characteristics of fiber itself, each point on the fiber is regarded as a sensing unit to achieve the purpose of full distributed monitoring. Optical fiber is not only a sensing unit, but also a signal transmission medium. It is simple in structure, easy to deploy, anti-electromagnetic interference, continuous monitoring of space, security in long distance perimeter, transmission cable, Submarine optical cable and other safety monitoring has a good application prospects. The main work of this paper includes the following aspects: 1. The mechanism of distributed optical fiber vibration sensing is studied. The mechanism of strain and fiber, Rayleigh scattering phenomenon and principle, and the optical time domain reflectance sensing system based on Rayleigh scattering effect are analyzed. Based on the sensing principle of P-OTDR (Polarization Sensitive Optical Time Domain reflectometer), the perimeter security monitoring system is designed and implemented, and the parameters of the system are calculated by combining theory and experiment. 3. Multi-Channel perimeter Security Monitoring system and its Application in the Safety Monitoring of Electric Power Communication Optical Cable, Based on Visual C, the alarm software of disturbance monitoring system is realized. Combining with RFID pipeline location technology and short message cat, the functions of line inspection and real-time short message alarm are realized. 4. Research on the application of perimeter security monitoring system in railway perimeter security monitoring. Based on Visual C, the alarm software of disturbance monitoring system is realized, and the function modules such as video surveillance and short message cat wireless communication are connected. Realize all-round, visual comprehensive monitoring.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U298

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