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1、区间自动闭塞分布式信号机控制单元的研究AbstractAutomaticblockintervalsignaldisplaycorrectlyisthebasisoftrains’safeandefficientoperation.Mostexistingsignalcontrolarchitecturesadoptcentralizedcontrolmethod,thiscontrolarchitecture’ssignalisoutside,andotherequipmentisconcentratedintheinterior.Indoorand
2、outdoorequipmentconnectedbycableastransmissionmedium,thiskindofsignalneedspendalotofcableandiseasytomixlinesandisvulnerabletolightningshock,itscostisalsohigh.Thecableconnectiondistanceisgenerallylimitedto10km.Combinedwithcomputer,network,communicationandmicroelectronicstechnolog
3、y’sdevelopment,itisveryimportanttodevelopadistributedsignalcontrolsystemwhichwillmovethecontrolunittothewaysidesothatthesignalcouldbecontrolledbydistributedremotecontrol.Inthispaper,thestructureofthetwotaketwofullelectroniclightcontrolunitisdesignedwhichisbaseontheintervalsignal
4、controlarchitectureforrailwaysignalsystembackground,combinedwithblocksectionsignalinterlockingcontrolconditionsduringthetrainoperation,toblocksectiontracksidesignalsastheresearchobject,usingthefieldbuscontroltechnology,developmentofnewelectronicswitchingdevice.Tracksideintellige
5、ntmonitoringandcontrolintegrateddesignrequirementscanrealizethescenemaintenancefree,convenientmaintenancemanagement,satisfytheoperationconditionsofblocksectiontrain,andalsocanrealizethelightopenandclosesafelyandreliably.Inthispaper,onthebasisofoveralldesignschemeofsignalcontrolu
6、nitanditstechnicalcharacteristics,softwareandhardwarearedesignedindetail,andthereliabilityandsafetyofcontrolunitareanalyzed.SignalcontrolunitandcontrolhostadoptdualredundantCANbuscommunicationmodetorealizelightingcommand,lightstateandfaultinformationtwo-wayinteractivecontrolunit
7、itself.Twoprocessorsinsidethecontrolunitverifylightthesignalstatusinformationthattheyhavereceivedareconsistentwiththecollecteddatathoughsynchronouscommunication,andtheaccuracyofthelightsignalstatusinformationandordersareensuredtofurther.Thesamecurrentdetectioncircuitisaccessedto
8、thecontrolunitcircuittolineandlineofthebackforl
