一种基于混合自动机模型的节点动态功耗管理机制研究

摘要

To reduce the energy consumption of sensor node and extend life of wireless sensor networks,this paper divides the working state of node into four kinds and designs the working state transition model of node that based on the hybrid automata.In order to decrease fraction of event missed,temperature and relative humidity environmental varlables are defined in this paper.Further more,according to whether the environmental variables can jump,the model determines the sensor node should switch to which kind of the working state.Meanwhile,the model takes into account the node residual energy to improve the equilibrium of node energy.Experimental results show the method is effective.%为了降低传感器节点的能耗,从而延长传感网络的使用寿命,本文将传感器节点的工作状态划分为四种,并设计了一种基于混合自动机的节点工作状态转换模型.为降低事件丢失率,文中定义了温度和相对湿度两种环境变量,该模型根据这两种环境变量是否跳变来决定节点进入何种工作状态；同时该模型考虑了节点的剩余能量,提高了节点能量使用的均衡性.仿真实验结果表明:该方法是有效的.