快速路交通事件自动检测算法的研究与实现

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1、北京交通大学硕士学位论文快速路交通事件自动检测算法的研究与实现姓名：余勇申请学位级别：硕士专业：交通信息工程及控制指导教师：陈德旺20080601=j￡塞交道太堂亟±堂位途塞△垦墨至B△g羔ABSTRACTABSTRACT：Withtherapiddevelopmentofurbanrapidtransport，urbanroadnetworkstructurebecomesmorecomplexandtrafficincidentsalsobecomemuchmore．Becausethereisalotof

2、high-speedtrafficonurbanfreeway,whichismoreclosedthanordinaryurbanroadandmorecrowdedthaninter-cityfreeway,urbanfreewaywillcongestheavilyiftheincidentsCan’tbecleanedintime．Soanaccurate，rapiddetectionofthehappeningoftrafficincidentshasaveryimportantpracticalsi

3、gnificancetotheunobstructednetwork．Trafficautomaticincidentdetection(AID)isanimportantpartoffreewayemergencymanagementsystem，andhigh-performanceautomaticincidentdetectionalgorithmcansignificantlyimprovethesystem’Seffect．ThethesisstemsfromaresearchcontentofBe

4、ijingNaturalScienceFoundation-fundedprojectsnamedas”ResearchonTrafficFlowModelandKeyTechnologiesofTrafficGuidanceforBeijingUrbanFreeways”(8052016)andalsoisasub-projectof“intelligenttrafficmanagementsysteminBeijing'’whichisaprojectfromBeijingSTONEIntelligentT

5、ransportationSystemIntegrationCO．，LTD．AfteranextensiveliteraturereviewofexistingAIDtechniques，thepaperintroducesthekeypointsofexistingalgorithmsandfindsthereisnotanabsoluteperfectalgorithm．Onthebasisoftheanalysisoftrafficincidents‘impactandaccordingtothetemp

6、oralandthetwo-dimensionalspatialabnormalvariabilityoftrafficflowasaresultoftrafficincidents，thepaperproposesaneasilyapplicativeAIDalgorithmbasedon3Dintegration．Thedesignideaisthatwhenatrafficincidenthappens，thealgorithmintegratesthechangeofvolumeandspeedofad

7、jacentlanesinthehorizontaldimension，thechangeofoccupancyofupstreamanddownstreamsectionintheverticaldimensionandthechangeofoccupancylevelsoftheflow-occupancymodelinthetemporaldimensiontoalarmincidents．Thepaperalsodescribesdesignideasandworkingproceduresofinte

8、gratedjudgmentmoduleandparametersupdatemoduleinthedetails．Theninorderto删分thealgorithm，thepaperanalysesthevalidityandpracticabilityofthealgorithmwiththedetectordatafromBeijingfreeway,andtheresult