时间同步无线传感器网络及其在建筑振动测量中的应用

Y. Uchimura, T. Nasu, Motoichi Takahashi
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引用次数: 10

摘要

基于网络的无线遥感已经成为一个重要的研究领域,各种新的遥感应用有望出现。其中一个很有前景的应用是建筑或土木工程结构的结构健康监测,通常需要进行振动测量。在无线振动测量中,时间同步是必不可少的。本文介绍了一种新开发的时间同步无线传感器网络系统。系统采用基于IEEE 802.11标准的TSF计数器,并将测量数据与计数器值一起发送。它使不同无线节点之间的公共时钟保持一致。我们通过仿真研究描述了节点大小增加时的精度评价。给出了所开发的无线传感系统的硬件和软件规格。在一栋三层钢筋混凝土建筑中进行了试验,结果表明该系统的性能非常好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Time synchronized wireless sensor network and its application to building vibration measurement
Network based wireless sensing has become an important area of research and various new applications for remote sensing are expected to emerge. One of the promising applications is structural health monitoring of building or civil engineering structure and it often requires vibration measurement. For the vibration measurement via wireless network, time synchronization is indispensable. In this paper, we introduce a newly developed time synchronized wireless sensor network system. The system employs IEEE 802.11 standard based TSF counter and sends the measured data with the counter value. It enables consistency on common clock among different wireless nodes. We describe the accuracy evaluation by simulation studies when the size of nodes increased. The hardware and software specifications of the developed wireless sensing system are shown. The experiments were conducted in a three-story reinforced concrete building and results showed the system performs more than sufficiently.
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