一种平衡无线传感器网络节点能耗的策略

无线传感器网络已广泛应用在智能电网的建设中。针对传感器节点随机唤醒机制的缺点,提出了节点轮流工作机制。该机制有两个优点:一是在满足所有被监测目标获得监测的条件下,使所有节点能耗达到平衡;二是去除了冗余活动节点,并对节点工作顺序进行了调整,以减少节点在睡眠模式与唤醒模式之间进行转换时的能量消耗。仿真结果表明,与随机唤醒机制相比,该机制提高了网络中所有节点能耗均衡性,降低了节点能耗和节点的模式转换次数。

A Strategy of Balancing Energy Consumption of Wireless Sensor Network Nodes

WSNs has broad range of applications in the smart grid. Aiming at the defects of the random nodes-waking-up strategy, this paper proposes a mechanism of sensor nodes round robin which has two advantages: One is that it can balance energy consumption of all sensor nodes while all targets are monitored; the other is that the redundant active nodes have been removed and the working order of all the sensor nodes has been adjusted so to reduce the energy and time consumptions during the transition between the sleep state and active state. Simulation results indicate that in comparison with the random nodes-waking-up strategy, this mechanism can not only improve the balance of energy consumption of all sensor nodes, but also reduce the frequency of sensor nodes' pattern conversion.