8 April 2009 A prototype mobile sensor network for structural health monitoring
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Wireless sensing has been widely explored in recent years for structural monitoring and dynamic testing. The limitations of current wireless sensor networks have been identified with regard to limited power supply, communication bandwidth, communication range, computing power, etc. The cost of most wireless structural sensors is still prohibitive for dense instrumentation on large civil structures. To address the above challenges, this research proposes a new methodology for structural health monitoring based upon mobile sensor networks. In this research, prototype mobile sensing nodes have been developed using magnet-wheeled cars as the sensor carriers. These mobile sensing nodes can maneuver upon structures built with ferromagnetic materials. Performance of the prototype mobile sensing system has been validated on a laboratory steel frame. Modal analysis for the frame structure is conducted using the data collected by the mobile sensing nodes. This exploratory work illustrates the flexible spatial resolutions offered by mobile sensors, which represent a transformative change from the fixed spatial resolution provided by traditional static sensors.
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Dapeng Zhu, Dapeng Zhu, Quanquan Qi, Quanquan Qi, Yang Wang, Yang Wang, Kok-Meng Lee, Kok-Meng Lee, Shaohui Foong, Shaohui Foong, } "A prototype mobile sensor network for structural health monitoring", Proc. SPIE 7294, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2009, 72941A (8 April 2009); doi: 10.1117/12.815863; https://doi.org/10.1117/12.815863

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