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Development of a self-contained wireless-based SHM system for monitoring a swing bridge

机译:基于独立无线的SHM系统的开发,用于监控吊桥

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Structural health monitoring (SHM) based on wireless sensor network (WSN) technology has been introduced into civil infrastructures in recent years due to its advantages of easy and flexible installation, low system cost and increased robustness. The wireless-based SHM system involves a multidisciplinary effort that encompasses a number of synergetic technologies brought together to provide a system that can potentially monitor the structural condition of a structure in real time. In this paper, a WSN for SHM is designed, implemented and tested on a swing Beaufort #25 Bridge at the East Coast of North Carolina. To characterise the dynamic behaviour of the swing bridge, seven wireless sensor nodes are distributed along the 55-m main span, which intended to collect acceleration data from the structure under ambient vibration. The acquisition data will then be stored and sent via the base station to a website, where the user can download these data and display it by a GUI tool. The wireless sensing unit is designed not only for reliable communication of response acceleration measurements but also for self-powered capacity. This study explores two energy harvesting approaches, solar panel and miniature wind turbine, to provide the power demands of the wireless sensor nodes.
机译:近年来,基于无线传感器网络(WSN)技术的结构健康监测(SHM)已被引入民用基础设施,因为它具有安装简便,安装灵活,系统成本低以及增强的耐用性等优点。基于无线的SHM系统涉及跨学科的工作,涵盖了许多协同技术,共同提供了一种可以潜在地实时监视结构的结构状况的系统。在本文中,SHM的WSN是在北卡罗莱纳州东海岸的Beaufort#25秋千桥上设计,实施和测试的。为了表征旋转桥的动态行为,在55米的主跨上分布了七个无线传感器节点,旨在在环境振动下从结构中收集加速度数据。然后,采集的数据将被存储并通过基站发送到网站,用户可以在其中下载这些数据并通过GUI工具显示它。无线传感单元不仅被设计用于可靠地响应加速度测量值的通信,而且还用于自供电能力。这项研究探索了两种能量收集方法,即太阳能电池板和微型风力发电机,以提供无线传感器节点的功率需求。

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