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332()Vol.33No.220044JOURNALOFGUIZHOUUNIVERSITYOFTECHNOLOGYApril.2004(NaturalScienceEdition):100920193(2004)0220090205XCAN,,(,410082):CAN,P8xC591(ECU):CAN;;:U463.633;U469.722:A0,(),,SOC,(),,,,CAN,CAN,,,CAN,1,24,101.2V,288V,,1[1]1()SOC1,SOC,,,,SOC,,,,,,,,,,,X:2003-12-12112CAN/,ISO/,ISO11898-2ECU()CPUMCS-518P8XC591,P8XC59116KROM,RAM51264K,316/,15,4,1UART,CAN,610ADC,8ADC,2PWM,,[2]P8XC591ADC,ADC,CANPHILIPSPCA82C250,CAN,P8XC59182C2506N137,1Mbps.DC-DC,P8XC591ADC0-5V,350,500V.,0-200A.DALLASDS18B20,-55-125,0.5(-10-85),122CAN3,,,CAN,,,3.1CAN,20-8,P8XC5911192,:CAN,11,(),(),,,,,[2]2.276543210FFRTR00DLC.3DLC.2DLC.1DLC.01ID.28ID.27ID.26ID.25ID.24ID.23ID.22ID.212ID.20ID.19ID.18(RTR)00001-8D7D6D5D4D3D2D1D03.1.1,3,P8XC5911CAN2FF,FF=1,FF=0,FF=0.RTR,1,0,,DLC.X0-8,:=8DLC.3+4DLC.2+2DLC.1+DLC.011(ID.28-ID.18),,,,,ID.28=0,ID.28=1.(),,,ID.21=0,ID.21=1.CAN,6(ID.27-ID.22),64,644(0-3),,,,3.1.2,,1,DB1.7=0,DB1.7=1DB1.6=0,DB1.6=1DB1.5=0,DB1.5=1,DB1.4-DB1.032,00001,00010,00011,,2,FFH1,00H0.2,DB2.7-DB2.2,DB.03.2CAN4[3]:(SYNCSEG)(PROPSEG)1(PHASESEG1)2(PHASESEG2).P8xC591CAN3:(SYNCSEG)1(TSEG1)2(TSEG2),TSEG1=PROPSEG+PHASESEG1,tSCL0(BTR0)1(BTR1),SJWBRPTSEG1TSEG2tSCL1[2]76543210BTR0SJW.1SJW.0BRP.5BRP.4BRP.3BRP.2BRP.1BRP.0BTR1SAMPTSEG2.2TSEG2.1TSEG2.0TSEG1.3TSEG1.2TSEG1.1TSEG1.03tSCL=BRP/fXTAL(1)BRP1-64.29()2004BRP=32BRP.5+16BRP.4+8BRP.3+4BRP.2+2BRP.1+BRP.0+1(2)SJW,1-4.SJW=tSJW/tSCL=2SJW.1+SJW.0+1(3)SAM,SAM=01,,SAM=13,TSEG1=tSEG1/tSCL=8TSEG1.3+4TSEG1.2+2TSEG1.1+TSEG1.0+1(4)TSEG2=tSEG2/tSCL=4TSEG2.2+2TSEG2.1+2TSEG2.0+1(5)1TSEG22,3TSEG23[4].NBT=tBit/tSCL=SYNCSEG+PROPSEG+PHASESEG1+PHASESEG2=SYNCSEG+TSEG1+TSEG2(6)SYNCSEG1,NBT3-25,,NBT1NBTmin=4,3NBTmin=5.tPROPCANtc,/tst1,to.,,:tPROP=2(tc+ts+tl+to)(7)PROP=tPROP/tSCL(8)1PROP2,TSEG2min=SJWmin.[4]BitRate=1tSCLNBT=fXTALBRPNBT(9)3.3fBit500KBit/stBit2usfXTAL16Mf1.0%ts/(PCA82C250)30ns75ns157nstc15ns40nsto28ns48ns100nstl5ns/m6.5ns/mL0.5m25mtBUStBUS=tlL2.5ns162.5nstPROPtPROP=2(ts+tc+tBUS+to)151ns919ns9BRPNBT:BRPNBT=fXTAL/BitRate=16106/500103=32BRPNBT4.4BRPNBTfXATLBRPNBTtSCLPROP16M216125ns7.35248250ns3.67684500ns1.838NBT,PROP21621000ns0.919NBT,PROP2,,,,BRP=2NBT=16tSCL=125nsPROP=7.352.PROPROUNDUP(PROP)=8,(PROPSEG)6:PHASESEG1+PHASESEG2=NBT-STYNCSEG-PROPSEG=16-1-8=7392,:CANPHASESEG1=PHASESEG2=ROUNDDOWN(7/2)=3,1PROPSEG,PROPSEG=9.TSEG1=9+3=12,TSEG2=3,SJW4PHASESEG1[4],SJW=3,[4],fSJW/(20NBT)=(3/(2016))=0.9375%,,BTR0BTR181HABH.3.3P8xC591CAN8CAN,CAN,P8XC591CPU5CANADR()CANDAT()CANMOD()CANSTA()CANCON()CAN,CANCONCAN45CANADR,CANADRTXDC454CAN,,,CANCAN,,,CANCAN,CAN,CAN(100)49()2004ElectricitySavingbyMakingArchitecturalShieldStructuresintheSouthGONGLei(Civil&ArchitecturalEngineeringFaculty,GUT,Guiyang,550003,China)Abstract:Inthepaper,theanalysisofbothoverheatandheatproofinsidelivingbuildingsinthesouthwasmade,mainlyfocusedonsolvingtheheatinsulationofouterarchitecturalshieldssoastosaveelec2tricity.Keywords:livingbuildingsinthesouth;shieldstructures;electricitysaving(94):[1],,.[M].:,2002.[2]CANSpecificationVersion2.0,PartsAandB[Z].PhilipsSemiconductors,1992.[3]JÊhnk,E.andDietmayer,K.:ApplicationNote:DeterminationofBitTimingParametersfortheCANControllerSJA1000[Z].PhilipsSemiconductors,1997.ABatteryMonitoringSystemBasedonCANBusforElectricVehiclesYANGSuo,HELi2ping.ZHONGZhi2hua(MechanicalandAutomobileEngineeringFaculty,HunanUniversity,Changsha,410082,China)Abstract:Abatterymonitoringsystem(BMS)basedonCANbusforelectricvehicles(EV)ispresentedinthispapertoenablebatterypowerdiagnosticsandmanagementtrue.ThepresentworkfocusesintheframedesignofoperatinginterfacecircuitsofElectronicControlUnit(ECU)withp8xC591asmicro2processor.Keywords:CANbus;electricvehicles;batterymonitoringsystem(97)SpeedtheCitilizationProcesswiththeIdeaofAdministrationYANGGang,LINGang(PlanningBureauofGuiyang,Guiyang,550003,China)Abstract:ThispaperofferedsomesuggestionsonthespeedingthecivilizationprocessofGuiyanghealthilyandefficiently.ItpointsoutthatGuiyanghasitsuniqueadvantagesinthewesternChina,es2peciallyinGuizhouProvince.Meanwhile,theviewofspeedingthecitilizationprocessofGuiyangwiththeideaofadministrationisproposed.Keywords:citilization;administration001()2004