摘要
时间同步是无线网路的一项重要支撑技术。传感器网络时间同步协议算法虽然能快速高效地进行网络节点上的时间同步,但是在同步时,需要对其进行组网,效率低下,且在同步的过程中没有考虑自身时钟的精度问题。针对以上不足,提出一种时间同步算法—最优时钟源传感器网络时间同步协议。该算法不需要构建网络的拓扑结构,能逐次选取优于自身节点时钟的时钟源进行同步。并用MSP430单片机设计的根节点和传感器节点构成的无线网络进行了分析验证。
Time synchronization of wireless networks is an important support technology. Traditional TPSN time syn- chronization algorithm can quickly and efficiently make the time synchronized on the network nodes, but in sync, it needs to be organized network and it is inefficient and does not take the synchronous clock accuracy problem of itself into considera- tion. Based on the problem of above mentioned, this paper puts forward a kind of time synchronization algorithm, the opti- mal clock source sensor network time synchronization protocol. The algorithm does not need to organize the network topolo- gy structure, and can successive select the clock source which is superior to itself node＇s clock to adjust clock. In addition, it is analyzed and experienced by using the root node and sensor nodes of wireless network designed by MSP430 single-chip mi- crocomputer.
出处
《计算机与数字工程》
2015年第4期666-670,共5页
Computer & Digital Engineering
关键词
无线传感器网络
时间同步
传感器网络时间同步协议
wireless sensor network, time synchronization, timing-sync protocol for sensor network
