摘要： 针对节点操作系统的特点及其对实时性、安全性、并发性的要求，提出一种新的实时系统内核调度算法，通过将任务优先级调度和时间片轮询相结合，提高处理器的响应速度，改善系统的实时性。将该调度策略在?COS-II上进行实现，并将修改后的内核应用于无线采集系统中进行实验验证，结果证明，该调度算法明显减少了系统响应时间，提高了系统效率。
关键词:
无线传感器网络,
任务调度,
无线数据采集系统,
COS-II系统
Abstract: Aiming at the characteristics of node operating system and its demands for real-time performance, security and concurrency, this paper proposes a new kernel schedule algorithm for real-time system. By combining task priority dispatching with time slot cycling, it boosts the response speed of the processor, and improves the real-time characteristics of the system. The strategy is implemented on ?COS-II, and the modified kernel is applied to the wireless acquisition system, whose result proves that the algorithm reduces response time of the system and improves its efficiency.
Key words:
WSN,
task schedule,
wireless data acquisition system,
COS-II system
中图分类号:
薛安琪, 屈玉贵, 赵宝华. 一种新的实时系统内核调度算法[J]. 计算机工程, 2011, 37(6): 286-289.
XUE An-Qi, JUE Yu-Gui, DIAO Bao-Hua. New Kernel Schedule Algorithm for Real-time System[J]. Computer Engineering, 2011, 37(6): 286-289.