CAN总线测控技术复习教学教案.ppt

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1、CAN总线测控技术复习CANbusDataFrameCANbusDataFrame-ArbitrationField仲裁CANbusDataFrame-ControlFieldCANbusDataFrame-DataFieldCANbusDataFrame-CRCFieldCANbusDataFrame-CRCPolynomGenerationCANbusDataFrame-AcknowledgeFieldCANbusDataFrame-EndofFrame(EOF)CANbusRemoteFrameCANbusErrorHandling-ActiveErrorFrameCANbu

2、sErrorHandling-Bit-StuffingErrorCANbusErrorHandling-Bit-StuffingandDe-StuffingCANbusErrorHandling-BitErrorCANbusErrorHandling-CRCErrorCANbusErrorHandling-AcknowledgementErrorCANbusErrorHandling-FormErrorCANbusErrorHandling-PassiveErrorFrameCANbusErrorHandling-ErrorStatesofCANNodeCANbusErrorHan

3、dling-SuspendPassiveTransmissionAftertransmissionanErrorPassivenodemustwait3+8recessivebitsbeforestartingtransmissionagain(additionalwaitstate).CANbusErrorHandling-TransmitErrorCounterCANbusErrorHandling-ReceiveErrorCounterCANbusErrorHandling-GlobalizationofLocalErrorsCANbusErrorHandling-Overl

4、oadFrameCANbusErrorHandling-LocalErrorsinEOFCANbusNon-Return-to-Zero-CodingCANbusBit-StuffingRuleCANbusStuff-BitEstimationCANbusBit-TimingCANbusSub-BitSegmentsCANbusSignalPropagationCANbusData-Rate/Bus-LengthRatioCANbusPracticalBusLengthCANbusNominalBusLevelsCANbusISO11898-2NetworkSetupCANbusI

5、SO11898-2NodeCANbusElectromagneticInterferenceCANbusISOHigh-SpeedSignalLevelsCANbus节点微处理器CAN控制器CAN收发器RXTXCAN总线CANBus节点控制装置、传感器、变送器、人机接口等CAN总线网络拓朴示意图终端电阻CAN-bus节点1CANHCANL节点2CANHCANL节点3CANHCANL节点4CANHCANLCAN总线系统节点硬件电路原理图组成CAN总线系统的主要器件CAN通信控制器SJA1000CAN总线收发器82C250，TJA1050带CAN控制器的单片机AT89C51CC03