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1、中国优秀硕士学位论文全文数据库2011年第S1期信息科技辑ChineseMaster'sThesesFull-textDatabase2011,No.S1InformationScienceandTechnologyI140-170-1基于时分复用光纤环形衰荡技术的多通道传感器网络陈书强学位授予单位:福建师范大学;学科专业:光学摘要本文利用时分复用原理,构建多通道光纤环形衰荡光谱技术(Fiber-loopRing-downSpectroscopy,FLRDS)的光纤传感器网络。以双通道为例,分别采用串联和并联FLRDS系统实现
2、了对两个不同点微弯压力的同步检测,实验结果显示了双通道FLRDS的同步检测系统的可行性。在此基础上,进一步提出串并联相结合四通道混联传感器系统,并从实验上证实了该传感器网络系统的可行性。根据多模光纤的色散,从理论上推导出时分复用的FLRDS的复用数量上限。其次,利用Labview平台,对多通道FLRDS数据采集与处理进行编程,实现了数据同步采集与处理。最后,提出一种基于时分复用的FLRDS同步测量三相电流的电流传感器技术方案,从理论上分析了该技术方案的可行性,为今后的发展提供一定的思路。总之,多通道FLRDS光纤传感器网络的构
3、建,为今后基于FLRDS技术的多个物理量的同步测量提供了可行的技术方案。关键词：光纤环形衰荡光谱技术(FLRDS);;多通道;;同步;;压力;;电流传感器中图分类号：TP212.9;TN929.5AbstractInthispaper,webuildthenetworkofmulti-channelfiberring-downsensorsbasedontheprincipleoftimedivisionmultiplexing,whichisillustratedbythetypicaldualchannelfiberrin
4、g-downforcesensorinourexperiment.WegainthesynchronousdetectionoftwodifferentpointswithMicro-bendstressinseriesandparallelFLRDSrespectively,theresultsshowthatthedual-channelsynchronousdetectionsystemsarefeasible.Onthisbasis,wefurtherconsistofseries-parallelhybridfour
5、-channelsensorsystemswhichisalsoconfirmedthefeasibilityofthesensornetworksystem.Accordingtomulti-modefiberdispersion,wededucetheFLRDSmaximumnumberofmultiplexingfromthetheoryoftimedivisionmultiplexing.Secondly,dataacquisitionandprocessingprogramareachievedsynchroniza
6、tionbytheLabviewplatform.Finally,wepresentathree-phaseelectriccurrentsensorbasedontheprincipleoftimedivisionmultiplexing.Withthetheoreticalanalysis,itshowspossibletoacquirethevalueofthethree-phasesynchronouscurrent,whichprovidealineofthoughtforfuturedevelopment.Insh
7、ort,Networkofmulti-channelFLRDSsensorsystemisbuilt,whichprovideasolutionsforsynchronousmeasurementofmultiplephysicalparameters.KeyWords：Fiberloopringdownspectroscopy;;multi-channels;;synchronous;;pressure;;currentsensor导师:邱怡申；导师单位:福建师范大学中国优秀硕士学位论文全文数据库2011年第S1期信息科技辑
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