To debug automatic mechanical transmission(AMT) more quickly and accurately,an AMT-fault-diagnosis device is designed based on the ISO 15765 protocol,which adopts the flow control mechanism and has off-line diagnost...To debug automatic mechanical transmission(AMT) more quickly and accurately,an AMT-fault-diagnosis device is designed based on the ISO 15765 protocol,which adopts the flow control mechanism and has off-line diagnostics function.Requirements for the device are analyzed and diagnostic trouble code(DTC) is defined.Electrically controlled hardware with graphics display function and fault diagnostic software flowchart are designed based on the electronic control hydraulic AMT system.Bench and vehicle driving tests showethat the AMT-fault-diagnosis device can read and delete the fault message successfully with a stable performance.展开更多
为了方便更新汽车电子控制单元(electronic control unit,ECU)的应用代码,针对汽车控制系统自身的特点,设计出汽车ECU在线升级系统。该升级系统利用车身控制器局域网络(controller area network,CAN),遵循诊断协议ISO15765,将ISO15765...为了方便更新汽车电子控制单元(electronic control unit,ECU)的应用代码,针对汽车控制系统自身的特点,设计出汽车ECU在线升级系统。该升级系统利用车身控制器局域网络(controller area network,CAN),遵循诊断协议ISO15765,将ISO15765诊断协议传输层和应用层规范应用于在线升级系统的上位机与ECU之间通信,实现对车身控制系统中各个ECU节点的在线更新应用代码功能。给出了该升级系统在STM8和XC167CI单片机的试验结果。试验证明,该升级系统不仅能够满足实际的代码更新要求,而且具有较强的通用性和可扩展性。展开更多
基金Sponsored by the National High Technology Research and Development Program of China("863"Program)(2006AA110115)
文摘To debug automatic mechanical transmission(AMT) more quickly and accurately,an AMT-fault-diagnosis device is designed based on the ISO 15765 protocol,which adopts the flow control mechanism and has off-line diagnostics function.Requirements for the device are analyzed and diagnostic trouble code(DTC) is defined.Electrically controlled hardware with graphics display function and fault diagnostic software flowchart are designed based on the electronic control hydraulic AMT system.Bench and vehicle driving tests showethat the AMT-fault-diagnosis device can read and delete the fault message successfully with a stable performance.
文摘国标GB 15740要求车辆必须具备发动机防盗(IMMO)功能.发动机防盗系统牵涉整车安全,为了避免诊断服务和其他控制器通用从而破解发动机防盗系统,以及为了调试发动机防盗系统故障位置和原因更快、定位更精确,开展了基于CAN总线的ISO 15765协议的发动机防盗诊断服务协议的研究开发. ISO 15765采用流控制机制和下线故障诊断功能,在分析可能出现故障信息后,制定了故障诊断代码(DTC)并设计了发动机防盗诊断模块软件编程的流程图.利用CANoe对发动机防盗系统中的信息进行读取与删除,结果符合预期目标,证明此项技术具有很高的可靠性,定位很精确,能满足实际使用要求.
文摘为了方便更新汽车电子控制单元(electronic control unit,ECU)的应用代码,针对汽车控制系统自身的特点,设计出汽车ECU在线升级系统。该升级系统利用车身控制器局域网络(controller area network,CAN),遵循诊断协议ISO15765,将ISO15765诊断协议传输层和应用层规范应用于在线升级系统的上位机与ECU之间通信,实现对车身控制系统中各个ECU节点的在线更新应用代码功能。给出了该升级系统在STM8和XC167CI单片机的试验结果。试验证明,该升级系统不仅能够满足实际的代码更新要求,而且具有较强的通用性和可扩展性。