Validation of a wireless traffic vibration monitoring system for the Voigt Bridge

摘要：

Recently,a variety of wireless structural health monitoring systems have been demonstrated as viable substitutes for traditional high-cost tethered monitoring systems.In this study,a prototype wireless sensing system is deployed upon the Voigt Bridge(La Jolla,CA)to validate its performance against a cabled monitoring system.Using 20 wireless sensors deployed over two spans of the bridge superstructure,acceleration time histories and their corresponding Fourier transforms collected from traffic-induced vibration suggest excellent correlation with those obtained from the tethered system.Embedded data processing is highlighted in this study with operational deflection shapes of the bridge identified by the wireless sensor network using embedded peak picking algorithms.Along with the cabled monitoring system is a video camera installed to continuously record bridge traffic.Video streams allow the input to the structural system to be quantified and directly linked to the output bridge response.

关键词： wireless sensors structural health monitoring traffic monitoring video streaming

作者: K.J. Loh J. P. Lynch Y. Wang K.H. Law M. Fraser A. Elgamal

作者单位: Department of Civil & Environmental Engineering,University of Michigan,Ann Arbor,MI 48109,USA Department of Civil & Environmental Engineering,Stanford University,Stanford,CA 94305,USA Department of Structural Engineering,University of California at San Diego,La Jolla,CA 92093,USA

会议类型: 国际会议

会议名称: The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)

会议地点: 重庆·南京

会议语种:英文

在线出版日期: 2007-05-01（万方平台首次上网日期，不代表论文的发表时间）