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P-OTDR在電力光纜與鐵路周界中的安防應(yīng)用

發(fā)布時(shí)間:2019-01-07 12:22
【摘要】:隨著社會(huì)的發(fā)展,人們對(duì)安全的需求也越來(lái)越高,世界范圍內(nèi)對(duì)入侵監(jiān)測(cè)傳感系統(tǒng)的研究熱情也有著明顯增長(zhǎng),通信部門對(duì)于自己內(nèi)部的通信建筑及外部的通信光纜都需要進(jìn)行實(shí)時(shí)的入侵監(jiān)測(cè)或故障診斷;運(yùn)輸部門為了增加對(duì)乘客,資產(chǎn)和基礎(chǔ)設(shè)施的保護(hù),也對(duì)火車站、鐵路周界沿線、隧道等進(jìn)行實(shí)時(shí)的入侵監(jiān)測(cè);石油天然氣等產(chǎn)業(yè)也對(duì)自己的運(yùn)輸管道狀態(tài)進(jìn)行監(jiān)測(cè),以達(dá)到防盜防破壞的目的;甚至國(guó)家的邊境線上也安裝了入侵監(jiān)測(cè)系統(tǒng),防止不法分子入境。在上述情況下入侵監(jiān)測(cè)系統(tǒng)可以用來(lái)避免人員傷亡,保護(hù)財(cái)產(chǎn)被盜或破壞等。傳統(tǒng)的入侵監(jiān)測(cè)技術(shù)如人類衛(wèi)隊(duì),脈沖式電子圍欄,微波傳感器,超聲波傳感報(bào)警器,弦線傳感器,主動(dòng)紅外報(bào)警器等等,都存在某些不足或環(huán)境的不適用分布式光纖振動(dòng)傳感技術(shù)利用光纖本身的傳輸特性,將光纖上每一點(diǎn)都看做一個(gè)傳感單元進(jìn)而達(dá)到全分布式監(jiān)測(cè)的目的。光纖既作為傳感單元,又作為信號(hào)傳輸介質(zhì),結(jié)構(gòu)簡(jiǎn)單,易于部署,抗電磁干擾,且可對(duì)空間進(jìn)行連續(xù)性監(jiān)測(cè),在長(zhǎng)距離周界安防、輸電線纜、海底光纜等安全監(jiān)測(cè)方面具有很好的應(yīng)用前景。對(duì)于此本文的主要工作包括以下幾個(gè)方面:1.研究分布式光纖振動(dòng)傳感機(jī)理。(對(duì)應(yīng)變與光纖的作用機(jī)理、瑞利散射現(xiàn)象及原理,并對(duì)基于瑞利散射效應(yīng)的光時(shí)域反射傳感系統(tǒng)進(jìn)行分析)。2.基于 P-OTDR(Polarization Sensitive Optical Time Domain reflectometer)的傳感原理設(shè)計(jì)并實(shí)現(xiàn)周界安防監(jiān)測(cè)系統(tǒng),并結(jié)合理論和實(shí)驗(yàn)計(jì)算出系統(tǒng)的參數(shù)指標(biāo)。3.多通道周界安防監(jiān)測(cè)系統(tǒng)與在電力通信光纜的安全監(jiān)測(cè)中的應(yīng)用研究,基于Visual C++實(shí)現(xiàn)擾動(dòng)監(jiān)測(cè)系統(tǒng)報(bào)警軟件并結(jié)合RFID管道定位技術(shù)和短信貓實(shí)現(xiàn)了線路巡檢和實(shí)時(shí)短信報(bào)警的功能。4.周界安防監(jiān)測(cè)系統(tǒng)在鐵路周界安防監(jiān)測(cè)中的應(yīng)用研究;鵙isual C++實(shí)現(xiàn)擾動(dòng)監(jiān)測(cè)系統(tǒng)報(bào)警軟件,并聯(lián)動(dòng)視頻監(jiān)控及短信貓無(wú)線通信等功能模塊。實(shí)現(xiàn)全方位、可視化綜合監(jiān)測(cè)。
[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.
【學(xué)位授予單位】:電子科技大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:U298

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