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ID:36438970
大小:4.34 MB
页数:83页
时间:2019-05-10
《基于BP神经网络的管道泄漏定位系统研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、北京交通大学硕士学位论文基于BP神经网络的管道泄漏定位系统研究姓名:关键申请学位级别:硕士专业:检测技术与自动化装置指导教师:陈广华20090601ABSTRACTABSTRACT:Withtherapiddevelopmentofpipelinetransportation,pollutionoftheenvironmentandcconorn/closscausedbyleakingaccidentoftransportationpipelinearemoreserious.Accordingtotheequipmentaging,corrosion
2、andoilstolen,leakageaccidentsintransportationpipelineoccurredfrequentlyinrecentyears.Fortheinaccuratepositionprecisionandlowefficiencyoftraditionaldetectiontechnology,anautomaticsystemofpipelineleaklocationisnecessarytobedesigned.Pipelineleakagedetectionisamulti-fieldandCI'OSS-su
3、bjectthesiswhichinvolvedmanysubjects,suchasSenSOrtechnology,signaldetectionandsignalprocessing.Inthispaper,theleakagedetectiontechnologyisstudiedbasedonNeuralNetworks.,nlispaperdesignedasystemofpipelineleaklocationbasedonBPNeuralNetworksaboutwatersupplypipeline.Real-timedatacolle
4、ction,conditionmonitoring,andleakpointlocationcouldberealizedbythissystem.Bothhomeandboardpipelineleakagedetectiontechnologywassummarizedinthispaper,meanwhile,theprinciples,difficultiesandsolutionsofpipelineleakagedetectiontechnologyweredescribedindetail.NeuralNetworkTechnologyan
5、dWaveletPacketAlgorithmwerealsointroduced.Noiseeliminationandfeaturevectorextractionofpressuresingaiwerebasedonapplicationofwaveletpacket.UsingBPnetworktorecognizepiplineworkstation,systemcouldlocateleakpointasfeaturevectorWasregard弱input。Anacquisitioncardwasdesignedbasedonsingle
6、chipcomputer;dataanalysisprogramWascompliedbyMATLAB,user-interfaceWasdesignedbyVisualBasic.Atlast,real—timemonitoringexperimentWascomplishedinthelab;afterwardtheexperimentalresultswerewellanalyzed.劢eresultshowsthatleakpointCanbelocatedaccurately,bythesystem.KEYWORDS:PipelineTrans
7、portation;LeakageLoction;WaveletPacket;BPNetwork;M【ATLABCLASSNO:TP277独创性声明本人声明所呈交的学位论文是本人在导师指导下进行的研究工作和取得的研究成果,除了文中特别加以标注和致谢之处外,论文中不包含其他人已经发表或撰写过的研究成果,也不包含为获得北京交通大学或其他教育机构的学位或证书而使用过的材料。与我一同工作的同志对本研究所做的任何贡献均已在论文中作了明确的说明并表示了谢意。学位论文作者签名:也签字日期:≯.,c,’年/月,7日87学位论文版权使用授权书本学位论文作者完全了解北京交通
8、大学有关保留、使用学位论文的规定。特授权北京交通大学可以将学位论文的全部或部分内
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