无线传感器网络中节点动态功率管理方法分析

摘要

在无线传感器网络中,节点携带的电池能量十分有限,针对如何高效地利用能量、最大化网络的生存周期,提出了一种以时间序列分析中的自回归(AR)模型和滑动平均(MA)模型理论为基础的动态功率管理(DPM)方法.通过给节点设置相应状态切换的时间阈值,让节点对事件发生的时间间隔与时间阈值进行比较,来决定自身的工作状态.实验结果表明,此方法是有效的.%In the wireless sensor network, nodes carry limited battery energy, and focused on how to efficiently utilize network node energy and extend network lifespan, an effective method of the dynamic power management ( DPM) based on the theory of the Autoregressive ( AR) model and Moving Average ( MA) model in the time series analysis is put forward. Through setting a threshold time and comparing the extent of time between two events with the threshold time for nodes, and according to the result they can judge their work status. The results of the experiment show that the method is effective.