总线式车身控制系统的低功耗策略设计

The Design of Low Power-consumption Strategy for Bus-based Auto-body Control System

分析目前流行的CAN/LIN网络的车载系统,提出一种有效实现LIN总线车身控制系统低功耗的策略。结合操作系统的空闲任务,给出了两种系统进入低功耗模式的方法,利用LIN总线实现单节点到整个系统的唤醒,分析了该设计对MCU的硬件要求以及软件实现的难点。经实际装车应用表明,此设计可以显著降低车身控制系统的功耗。

Based on the analysis on the currently prevalent CAN/LIN network in on-board system, a strategy for effectively realizing the low power consumption in the bus-based auto-body control system is presented. Two different ways to enter into the low-power consumption mode are designed, making use of the idle task of the operating system, and the method of using the first wakened node to wake up other nodes and finally the whole auto-body control system by LIN bus is adopted. The requirements the design poses on MCU hardware and the difficulties in software implementation are analyzed. The resuhs of practical use in a commercial vehicle show that this design can markedly reduce power consumption of auto-body control system.