In order to improve the safety and reliability of safety-critical electronic systems which use redundant structure, this paper proposed a redundant and heterogeneous vehicle bus network with high safety and reliability using redundancy communication theory and implementation method, which adopted heterogeneous redundant data channels and comprehensive fault monitoring and management mechanism. The proposed network can still realize data correct transmission when hardware or data frame information failure occurs, and moreover send the warning of network redundancy reduction to the vehicle system. The fault injection method was used to verify that the vehicle bus network can achieve high safety and reliability of"failure-operation-safety-warning".%为了提高采用余度结构的汽车关键电子系统之间通讯的安全可靠性,利用余度通信理论和实现方法,提出了一种高安全可靠性车载余度异构总线网络,其采用余度异构数据通道和全面的故障监控机制,能够在发生一次硬件故障或者数据帧信息故障时,仍实现数据的正确传输,并且向车辆系统发出网络余度降阶预警.利用故障注入的方法验证了车载余度异构总线网络能够实现"故障-工作-安全-预警"的高安全可靠性.
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