摘要
无线传感器网络是能量严重受限的网络,传感节点能耗用尽会影响整个无线传感网络的使用寿命。如何高效利用节点能量是无线传感网络要解决的首要问题,需要建立高适应性的能耗模型来分析和预估无线传感网络的剩余能量。本文在分析无线传感网络能量消耗特征的基础上,根据无线通信环境和节点的状态转换关系,建立了基于半马尔科夫链的无线传感网络的能耗模型,并通过仿真实验验证得出传感节点实际能耗剩余值与所建模型能耗预估值基本相同,从而说明本文所建立的能耗模型准确有效,为改变传感节点工作状态,延长传感网络使用寿命提供了可靠的节点能量数据。
Wireless sensor networks is severely limited energy networks,energy consumption of sensor nodes will affect the life of the exhaustion of the entire wireless sensor networks. How efficient use of energy is a key issue node wireless sensor networks need to be addressed, we need to create highly adaptable energy consumption model to analyze and estimate the remaining energy wireless sensor networks, however, the current energy model are not well adapted for wireless sensor networks. This paper analyzes the characteristics of WSN energy consumption, based on the state transformation between nodes in a wireless communication environment and the establishment of a semi-Markov chain model of energy consumption,and the actual energy consumption of sensor nodes obtained by simulation with the remaining value of the model estimates the energy consumption is basically the same, indicating that the model established in this paper consumption accurately and efficiently, to change the operating state sensor node, extending the life of the sensor network nodes provide a reliable energy data.
出处
《电子设计工程》
2016年第11期95-98,101,共5页
Electronic Design Engineering
