一种无线传感器网络分布式连续数据采集系统的同步方法.pdf

文档介绍：第 41 卷第 1 期东南大学学报自然科学版 Vol. 41 No. 1
年月
2011 1 JOURNAL OF SOUTHEAST UNIVERSITY Natural Science Edition Jan. 2011

doi 10. 3969 /j. issn. 1001 - 0505. 2011. 01. 006
一种无线传感器网络分布式连续数据
采集系统的同步方法
王洋袁慎芳董晨华吴键
,
南京航空航天大学智能材料与结构研究所南京 210016

摘要提出多信道多基站架构构建无线传感器网络连续实时数据采集系统. 采用异步时钟对命

令进行等间隔多次发送以保证命令的可靠传输通过 TDMA 和 CSMA /CA 机制保障数据的实时

可靠收集基于异步时钟采集、多退少补机制以及节点功能单一化技术对采样点的时间间隔抖动
进行优化提出一种灵活轻量型的晶振漂移补偿机制消除分布式采集系统中独立晶振的累积漂
, ,
移. 经实验验证本架构可以实现所有采集节点长期和连续地进行同时刻数据采集并且实时地
将采集数据传输给监控中心.
关键词无线传感器网络晶振漂移同步信道

中图分类号 TP393 文献标志码 A 文章编号 1001 - 0505 2011 01-0025-06
Synchronous method of wireless work
for distributed continuous data acquisition system
Wang Yang Yuan Shenfang Dong Chenhua Wu Jian
,
The Aeronautic Key Laboratory of Smart Material and Structure
, ,
Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

Abstract The multiple channels and multiple stations architecture for wireless work con-
,
tinuous real-time data acquisition system was presented. To ensure reliable transfer mands
asynchronous clock was adopted to issue order respectively with equal interval. Based on time divi-
,
sion multiple access and carrier sense multiple access with collision avoidance mechanism reliable
,
and real-time data was collected. Based on asynchronous clock collection plus-minus average mech-
, ,
anism as well as