【摘要】 为了解决大规模无线传感器网络因节点数增加而引起的同步精度下降问题,提出了基于参考节点扩散的时间同步算法;网络中设置多个参考节点,普通节点根据其与每个参考节点之间的通信距离来选择同步对象,减少了整个网络中的平均同步跳数;在全网的同步过程中引入了参考节点扩散的机制,充分利用几种基本同步算法的优势,弥补了各自的不足;实验证明算法在保证同步精度的前提下可以有效减少能量消耗,同时在大规模无线网络中也能保证良好性能。更多还原

【Abstract】 In order to solve the problem of synchronization precision drop caused by the increase of nodes in large wireless sensor networks,a new time synchronization algorithm based on reference nodes diffusion was proposed.The net has multiple reference nodes and the ordinary nodes can choose which one to synchronize to according to the distance and in this way the average synchronization hop of the network is reduced.The reference node diffusion mechanism is introduced to the synchronization process,making full use of the basic time synchronization algorithm’s advantages and making up their defects.The experiments show that the algorithm can effectively save energy on the premise of synchronization precision.更多还原