Field validation of a wireless structural monitoring system on the Alamosa Canyon Bridge

被引：37

作者：

Lynch, JP ^{[1
]}

Sundararajan, A ^{[1
]}

Law, KH ^{[1
]}

Kiremidjian, AS ^{[1
]}

Carryer, E ^{[1
]}

Sohn, H ^{[1
]}

Farrar, CR ^{[1
]}

机构：

[1] Stanford Univ, Dept Civil & Environm Engn, Stanford, CA 94305 USA

来源：

SMART STRUCTURES AND MATERIALS 2003: SMART SYSTEMS AND NONDESTRUCTIVE EVALUATION FOR CIVIL INFRASTRUCTURES | 2003年 / 5057卷

关键词：

wireless sensors; structural monitoring; sensing networks; system identification;

D O I：

10.1117/12.482712

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A state-of-art design of a wireless sensing unit, which serves as the fundamental building block of wireless modular monitoring systems (WiMMS), has been optimized for structural sensing applications. Employing wireless communications as a primary means of data transfer, the high-cost but fragile cables of traditional tethered monitoring systems is eradicated resulting in a low-cost and flexible monitoring infrastructure. An additional innovation is the inclusion of advanced embedded microcontrollers to accommodate the computational tasks of engineering and decision support analysis. To quantify the performance of the wireless sensing unit, field validation upon a full-scale benchmark structure is undertaken. The Alamosa Canyon Bridge in New Mexico is instrumented with wireless sensing units and a traditional cable-based monitoring system in parallel. Forced vibrations are applied to the bridge and monitored using both (wireless and tethered) data acquisition systems. Recorded time-history measurements are used to identify the modal properties of the structural system. The performance of the wireless sensing units is compared to that of the commercial wire-based monitoring system.

引用

页码：267 / 278

页数：12

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Lynch, JP ;

Law, KH ;

Kiremidjian, AS ;

Carryer, E ;

Kenny, TW ;

Partridge, A ;

Sundararajan, A .

SMART STRUCTURES AND MATERIALS 2002: SMART SYSTEMS FOR BRIDGES, STRUCTURES, AND HIGHWAYS, 2002, 4696 :124-135

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