基于TEEN路由协议的改进型数据融合算法

摘要

无线传感网络节点能量有限,采用有效的路由协议与数据融合算法可以降低能耗和延长网络寿命.针对TEEN协议在应用中的不足,提出一种基于TEEN协议的改进型数据融合算法,在簇首选择机制中加入了能量控制条件,完善数据周期性采集机制,簇首与基站间以多跳形式通信以及采用基于Kalman滤波的分批估计融合算法进行数据融合.并采用NS-2网络模拟器进行仿真,仿真结果表明,采用改进型TEEN协议有效地延长了网络的生存时间.%Because of limited energy of nodes in wireless sensor networks.It is necessary to design an effective routing protocol and an algorithm of data fusion to save energy and extend the survival time of the networks.In order to solve the problem,the article proposes a novel improved data fusion algorithm based on TEEN.Some aspects have been improved,such as joining the energy factors in the process of cluster-heads selecting,improving the data periodic collection mechanism,using multi-hop communication between cluster heads and base station and selecting batch estimate data fusion algorithm based on the Kalman filter.The simulated result based on NS-2 network simulator shows that the improved TEEN protol prolongs the lifetime of sensor networks effectively.