嵌入式系统μC/OS-Ⅱ在车辆电控单元中的改进与应用

摘要

嵌入式实时操作系统μC/OS-Ⅱ具有可移植性、可扩展性等特点,对其做进一步的改进使其符合OSEK标准.将改进后的系统移植到MC9S12XDPS12微控制器中,应用到车辆电控单元中.采用多任务处理优先方式设计了车辆电控单元的软件,提高了车辆电控系统的可靠性和实时性.%The embedded real-time operation system, μC/OS-Ⅱ, bears the advantages of transplantablility and expandability. Further improvements are implemented to enable it to be in accordance with OSEK standard. The improved system is transplanted to MC9S12XDP512 microcontroller and applied to the vehicle electro-control unit. The vehicle electro-control unit software is designed with multitasking preemptive mode so that the system's reliability and real-timeliness is enhanced.