计算机工程 ›› 2011, Vol. 37 ›› Issue (5): 115-117.doi: 10.3969/j.issn.1000-3428.2011.05.039

• 网络与通信 • 上一篇    下一篇

无线传感器网络同步误差测量方法

徐朝农1,徐勇军2   

  1. (1. 中国石油大学(北京)计算机科学与技术系,北京 102249;2. 中国科学院计算技术研究所,北京 100008)
  • 出版日期:2011-03-05 发布日期:2012-10-31
  • 作者简介:徐朝农(1975-),男,讲师、博士,主研方向:无线传感器网络,分布式计算;徐勇军,副研究员、博士
  • 基金项目:
    国家自然科学基金资助项目(60772070, 60876025);国家“863”计划基金资助项目(2007AA041702, 2009AA01Z126)

Measurement Method of Synchronization Error for Wireless Sensor Networks

XU Chao-nong  1, XU Yong-jun  2   

  1. (1. Department of Computer Science and Technology, China University of Petroleum, Beijing 102249, China; 2. Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100008, China)
  • Online:2011-03-05 Published:2012-10-31

摘要: 针对无线传感器网络时间同步算法的同步精度性能难以测量的问题,利用处理器的“自中断”功能,提出一种高精度、低成本的无线传感器网络时间同步误差测量方法,并在GAINS测试床上进行实现。实验结果表明,与使用高精度逻辑分析仪的测量方法相比,该方法的测量准确性较高,且成本更低。

关键词: 传感器网络, 时间同步, 测量, 中断

Abstract: Considering the difficulty in precise measurement of time synchronization algorithm of wireless sensor networks, this paper proposes a measurement method with high precision and low cost by utilizing the capability of the “self interrupt”, which is realized in many microcontrollers. The measurement method is realized on GAINS testbed. To verify its validity, the synchronization error of TPSN is measured on the testbed. Compared with the measurement method with logic analyzer, better precision and lower price are simultaneously gotten.

Key words: sensor networks, time synchronization, measurement, interruption

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