一种新的实时系统内核调度算法  

New Kernel Schedule Algorithm for Real-time System

作　　者：薛安琪[1] 屈玉贵[1] 赵宝华[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系,合肥230027

出　　处：《计算机工程》2011年第6期286-288,共3页Computer Engineering

基　　金：安徽省自然科学基金资助项目(ZD2008005-2;ZD200904;JK2009A013;JK2009A025)

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μCOS-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。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 μCOS-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.

关 键 词：无线传感器网络 任务调度 无线数据采集系统 μCOS-II系统 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]