摘要
简略地分析了 u C/OS操作系统的特点 ,指出在嵌入式实时控制工程领域内应用该操作系统时 ,多任务的优先级设定是一个关键问题。接着分析了在电梯群控工程中 ,其软件系统应该完成的功能 ,在此基础上提出其多任务划分的原则 ,并给出一个实际的例子。结论是利用 u C/OS提供的系统特征 ,可以简化多任务程序设计 ,满足多个任务的时间要求 ,大大降低了开发难度 ,轻松地完成前后台编程方法难以完成的任务。同时利用系统的定时中断 ,设计一个超级任务来对其他任务进行监控 。
Describes the characteristics of uC/OS and points o ut that the priorities of multi-tasks should be carefully assigned in the embedded and real-time systems The function of software of the multielevators system is analyzed Based on it, the principle of assignment of multi-task priorities of the system is developed and a realistic case is given too This method has many advantages, such as simplifying the programmin g and determining easily if the deadlines of multi-task are satisfied T he reliability of the system is developed too The system designed by the method is comparatively superior than Foreground/Back ground system
出处
《现代电子技术》
2003年第13期84-86,共3页
Modern Electronics Technique
基金
中国工程物理研究院电子工程研究所基金资助( S2 0 0 2 190 7)
