軌道信號(hào)的發(fā)送及TVM430改進(jìn)方案的研究與實(shí)現(xiàn).pdf

1、北京交通大學(xué)碩士學(xué)位論文軌道信號(hào)的發(fā)送及TVM430改進(jìn)方案的研究與實(shí)現(xiàn)姓名：姜曉慶申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電路與系統(tǒng)指導(dǎo)教師：杜普選20080501j丘塞交通太堂亟堂焦j金室△墾墨!R△￡至ABSTRACTABSTRACT：ThereareseveralrailwaysignalsystemsinourcountryForthesafeoperationit’Snecessarytoprovidearailwaysignalsendi

2、ngsystemthatcansimulatenotonlyallkindsofthepresentsignalsbutnoiseOntheotherhand，withtheaccelerationofdomestictraintherequirementfortherailwaysignalsturnmoreandmorestricthoweveritishardtocontrolthetrainefficientlybecausew

3、ehavenotenoughbitsinourrailwaysignalsCamefromFrancetheTVM430digitalcodedsignalhasmoreinformationupto27bits，whichCanmeettheneedofhighspeedtrainButslowdemodulationisthebiggestflawforTVM430，otherwise，it’SexpensiveforOUl“cou

4、ntrytouseTVM430becauseithash’tbeenimprovedbyllsNowit’SonlyusedinQinhuangdao—ShenyangrailwaylineforpassengertrafficFortheaboveproblems，theworkofthispapercomposedoftwoparts：First，designasetofrailwaysignalsendingsystemwhich

5、CansendrailwaysignalsOnreal—time，andprovideaninterfacedesignedbyCHBuilderthatisusefulforoperationThissystemisanimportantpartof‘‘SimulationSystemofRailwaySignalTransmissionandOnboardCabSignalReceiving’whichachieveschampio

6、ninthenationalDSPcompetitionorganizedbyTIFurthermore，thispaperfocusesonTVM430’StechnicalimprovementsWereducethenumberofTVM430’SlowfrequencymodulatingsignalswhilemakesurethesameinformationasTVM430，andsearchcyclegenerating

7、polynomialfortheimprovedTVM430andaddparitycheckingtotheimportantcodewordsWealsoredefinefrequencyandamplitudeforlowfrequencymodulatingsignalsanddiscussthephaseinformation，SOmakethesynthesissignal’Samplitudehavesmallchange

8、UsingTMS320VC33嬲aplatformwestudythesendinganddemodulatingstrategyoftheimprovedTVM430，andcalculatethedecodingspeedIt’StruethattheimprovedTVM430’demodulatingspeedisquickerthatTVM430signalKEYWORDS：improvedTVM430signal；TMS32