| 基于频率校正的触发型传感器网络同步算法 |
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| 引用本文： | 魏诺,郭强,李春杰,刘瑞霞,孔祥龙.基于频率校正的触发型传感器网络同步算法[J].计算机工程,2008,34(7):95-97. |
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| 作者姓名： | 魏诺 郭强 李春杰 刘瑞霞 孔祥龙 |
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| 作者单位： | 1. 山东省计算中心测控网络实验室,济南,250014
2. 山东经济学院,济南,250014 |
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| 摘 要： | 通过对现有时钟同步算法的分析，为消除触发型同步算法中时钟频率偏差对同步误差的影响，提出一种基于频率校正的触发型传感器网络同步算法。该算法中基站监测事件发生时，相关传感器节点通过线性回归计算时钟晶振频率偏差，通过同步信令的交互，估算往返时延和时间差值。仿真结果表明，该算法能达到良好的同步精度。
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| 关 键 词： | 传感器网络 事件触发 频率偏差 时钟同步 |
| 文章编号： | 1000-3428(2008)07-0095-03 |
| 修稿时间： | 2007年4月30日 |
Event-triggered Sensor Network Time Synchronization Algorithm Based on Skew Calculation |
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| WEI Nuo,GUO Qiang,LI Chun-jie,LIU Rui-xia,KONG Xiang-long.Event-triggered Sensor Network Time Synchronization Algorithm Based on Skew Calculation[J].Computer Engineering,2008,34(7):95-97. |
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| Authors: | WEI Nuo GUO Qiang LI Chun-jie LIU Rui-xia KONG Xiang-long |
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| Affiliation: | (1. Measurement & Control Lab, Shandong Computer Science Center, Jinan 250014; 2. Shandong Economic University, Jinan 250014) |
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| Abstract: | The existing algorithms of sensor networks is analyzed and compared. In order to eliminate the effects on synchronization errors which is made by the clock skew, an event-triggered time synchronization algorithm based on skew calculation is proposed. In the algorithm, when an event occurs, each related node calculates the clock skew by linear regression, then estimates round-trip delay and synchronization difference by exchanging synchronization signals. Simulation result indicates that the algorithm can reach a desired accuracy. |
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| Keywords: | sensor network event-triggered clock skew time synchronization |
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