摘要
时间同步是分布式系统实现的重要前提。分布式无线传感器网络在未来将扮演越来越重要的角色,它对于时间同步有很高的要求,是实现传感器数据融合、TDMA调度、定时触发的基础。但是,传感器网络自身的特点决定了现有的网络时间同步方法并不完全适合运用,需要被拓展来适应分布式传感器网络新的需求。本文分析了分布式传感器网络时间同步的特点,使用了基于层次结构的传感器网络时间同步方法,实验证明是可行的,适用于分布式传感器网络。
Time Synchronization is a critical piece of infrastructure for any distributed system. Distributed wireless sensor network will play a important role in the future.Iin particular, wireless sensor networks make extensive use of synchronized time in many fields, for example data fusion, TDMA schedules, synchronized sleep periods. But the existing time synchronization methods aren＇t fit to sensor network, and need to be extended to meet these new needs. The characteristices of sensor network are analyzed in this paper using level-based sensor time synchronization method. Experiment shows that the way is feasible and can be used to distributed sensor network o
出处
《传感器世界》
2006年第1期36-41,共6页
Sensor World
关键词
传感器网络
时间同步
层次结构
拓扑
sensor network
time Synchronization
level structure
topology
