一种基于执行器控制域的分布式数据收集协议

A Distributed Data Gathering Protocol Based on Actuator Control Domain for Wireless Sensor and Actuator Networks

针对无线传感器/执行器网络(Wireless Sensor and Actuator Networks,WSANs)中执行器控制域的数据收集问题,提出了一种基于执行器控制域的分布式数据收集协议(DG-ACD协议).DG-ACD协议从能量有效性和数据融合的角度,提出了执行器控制域内传感器节点的中继代价函数,并以执行器节点为中心,采用发射功率分级递进的路由建立方式,为控制域内的每个传感器节点寻找其到达执行器节点的中继节点,从而实现对执行器控制域内传感器节点的聚集和数据收集.实验仿真结果表明,网络中节点(包括执行器节点)部署完成后,DG-ACD协议能有效地将网络中的传感器节点聚集到相应的执行器节点,并在数据收集的能量有效性、实时性和稳定性上均有良好表现.

In Wireless Sensor and Actuator Networks （WSANs）, more capable actuator nodes are employed to gather data from sensor nodes and perform specific actions. In this paper, a distributed data gathering protocol based on actuator control domain （ DG-ACD protocol ） is proposed. In the view of energy-efficiency and data aggregation, the relay cost function for sensor nodes in an actuator control domain is used to evaluate the ability of a sensor node that is ready to become as a relay node. In the DG-ACD protocol, a scheme of stepped transmission power is used to group all sensor nodes in an actuator control domain and collect data from those sensor nodes. By the stepped transmission power level and the relay cost function, each sensor node in an actuator control domain is specified an appropriate relay node, and then a route from the sensor to the actuator is established. The simulation results show that DG-ACD protocol can effectively make each node be gathered to an appropriate actuator by multi-hop transmission after the nodes including actuator nodes are deployed in a network, and the performance of the proposed protocol is validated on the aspects of energy-efficiency, delay and stability.