适合无线传感器网络的自适应动态电压调节算法  

Adaptive dynamic voltage scaling algorithm for wireless sensor networks

作　　者：张承刚[1] 徐成[1] 

机构地区：[1]湖南大学计算机与通信学院,长沙410082

出　　处：《计算机应用研究》2008年第12期3800-3803,共4页Application Research of Computers

基　　金：国家发展和改革委员会资助项目(计高科2034)

摘　　要：对于能量有限的传感器网络,在计算复杂度较高的应用中,节省CPU的能耗具有重要意义。针对以事件为驱动的无线传感器网络的任务模式,提出一种基于零散任务模型的自适应DVS算法——A-DVS。A-DVS算法根据CPU的任务量实时调整工作频率和电压,能在很大程度上降低CPU能耗的同时,保证任务的实时性要求。理论分析和实验结果表明,A-DVS算法的实际节能效果接近理论分析值的80%左右,可在很大程度上延长节点的生命周期。It is significant to lower energy consumption from CPU for applications with high computing cost in energy-constrained wireless sensor networks. This paper proposed a scattered task model based adaptive DVS （ dynamic voltage scaling） algorithm, A-DVS, in the presence of the task characteristic in event-driven wireless sensor networks. A-DVS algorithm could scale the working frequency and voltage dynamically according to the workload. As a result, it could decrease the CPU energy consumption meanwhile meeting the real-time requirements of tasks. Theoretical and experimental results show that the A-DVS algorithm can achieve 80% or so theoretical energy savings so that prolong the lifetime of sensor nodes.

关 键 词：无线传感器网络 动态电压调节算法 自适应 能量有效性 

分 类 号：TP212.5[自动化与计算机技术—检测技术与自动化装置]