基于LIN总线的汽车后视镜控制系统设计

Design of a Car Mirror Control System Based on the LIN Bus

汽车车身电子控制系统多采用CAN控制网络协议,但由于汽车后视镜控制对数据传输速率要求较低,若采用CAN总线通讯相对成本较高。而LIN作为一种辅助的总线网络,成本低廉,仅使用一根线就能实现数据通讯,因此使用LIN总线可大幅节省成本。文中设计了一种基于LIN总线的汽车后视镜车身控制网络,实现了对左右后视镜的总线控制,并在此基础上进一步对系统进行了低功耗和故障自诊断功能的设计,降低了后期的维修成本,为实际应用提供了一种可行的解决方案。

CAN control network protocol is employed in most automotive body electronic control systems, but the need data transfer rate of automotive mirror control is very low, and the use of CAN bus communication has high- er cost. LIN bus is an auxiliary bus network, which is low in cost and able to achieve the data communication with only one wire. The design of the network based on LIN bus can achieve the control on the left and right rear-view mirror of the bus. And the low power consumption and fault self-diagnosis function is designed to reduce the late ma- intenance costs, providing a viable solution for praetical application.