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能源供应有限性是局限传感器网络的性能和存活寿命的重要因素,本文从传感器网络节点的任务调度出发,提出动态能量管理DPM和动态电压/频率调节DV/FS的双效处理器节能调度算法,即DV/FS-RM和DV/FS-EDF调度算法;在DPM动态控制空闲任务进入休眠的同时,在保证节点的实时性的前提下,通过DV/FS-RM或DV/FS-EDF算法降低处理器频率,达到更好的节能效果.实验显示,该节能任务调度算法使以电池为能源的传感器网络节点的生存期成倍地延长.
The limitation of energy supply is an important factor to limit the performance and life span of sensor networks. Based on the task scheduling of sensor network nodes, a dual-effect energy-saving scheduling algorithm of dynamic energy management DPM and dynamic voltage / frequency regulation DV / FS is proposed. That is, DV / FS-RM and DV / FS-EDF scheduling algorithm. When the DPM dynamically controls the idle task to enter hibernation, the DV / FS-RM or DV / FS-EDF algorithm is reduced while ensuring the real- Processor frequency to achieve a better energy-saving effect.Experiments show that the energy-saving task scheduling algorithm to battery-powered sensor network node lifetime doubled.