【摘要】 对带执行器节点的无线传感器网络系统的结构和特点进行介绍和分析,比较了带执行器节点的网络系统与普通的网络系统之间的不同.根据充分利用执行器节点的供电和通信能力,减少传感器节点的能耗的设计思想,设计了一种可行网络通信协议和执行器决策算法.然后利用无线传感器网络能量模型和网络通信模型对该协议进行能耗和网络响应时间分析.最后对本协议进行仿真分析,比较执行器节点存在和不存在两种网络的网络性能,结果说明利用系统中执行器节点的特性设计网络通信协议,可以有效地提高网络系统的事件响应时间和单事件能耗性能.更多还原

【Abstract】 The system structure and features of wireless sensor networks with actuator nodes were analyzed and compared with common wireless sensor networks(WSNs) system.It is suggested that the electricity supply and communication capacity of the actuator nodes be used fully to save the energy consumption of the sensor nodes.On the basis of the idea,a network protocol stack and actuator selection algorithm for the WSANs are proposed.The protocol was simulated to analyze event response time and the energy consumption of the WSANs according to the energy model of WSNs.The results show that the proposed protocols can shorten the event response time and save the energy consumption of the sensor nodes.更多还原