基于动态触发和协同的WSN节点寿命优化  

Dynamic Triggering and Cooperation Based Lifespan Optimization of WSN Nodes

作　　者：宋运忠[1] 李丽伟[1] 

机构地区：[1]河南理工大学电气工程与自动化学院复杂网络研究室,河南焦作454003

出　　处：《控制工程》2013年第2期339-343,共5页Control Engineering of China

基　　金：国家自然科学基金项目(60850004);河南省教育厅科技创新人才支持计划项目(2009HASTIT021)

摘　　要：网络能耗和能量均衡决定了无线传感器网络(WSN)的生存时间,为克服静态信息传输下单一节点工作量对网络生存时间的制约,延长无线传感器网络节点生命周期,提出了一种基于动态触发和协同操作的信息优化传递方式。借助可行性定理,确定多条可行的信息传递路径;网络在静态信息传输方式下以某条路径传递信息,当能量消耗过多、数据流量过大的跳跃节点能耗至一定程度时,通过触发机制使多条路径动态协同工作,以此降低节点的信息吞吐量,实现节点能耗均匀化,延长节点的生命周期,保证网络的有效性;并对各条路径工作时间的确定给出了最优的解决方法。通过Matlab仿真表明,动态触发机制下的协同传输有效的延长了网络寿命,同时提高了网络能量利用率。The network energy and energy balance determine the wire]_ess sensor networks＇ survival time. In order to get rid of the con straint of the unsatisfied lifespan of the static information transmission induced by early dying out of some individual node in wireless sensor networks, a dynamic event triggering and cooperation scheme is proposed here. At first, the available cuts are determined via viable theorem. When the hop notes that use too much energy consume to a certain degree, a switching will be triggered between the cuts cooperatively to keep the load balance of information transmission, and on accounts of that, energy consumption within and be tween the cuts turns into uniformity, so abortion of some individual or several nodes in WSN can be prohibited, which enables long li fespan of WSN finally. The optimal lifetime of each cut is also found in this paper. Simulation results show that, the suggested method is powerful with validity.

关 键 词：无线传感器网络 可行性定理 动态触发 协同操作 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]