Techno Press
Techno Press

Smart Structures and Systems   Volume 3, Number 3, July 2007, pages 299-320
Issues in structural health monitoring employing smart sensors
T. Nagayama, S. H. Sim, Y. Miyamori and B. F. Spencer, Jr.

Abstract     [Full Text]
    Smart sensors densely distributed over structures can provide rich information for structural monitoring using their onboard wireless communication and computational capabilities. However, issues such as time synchronization error, data loss, and dealing with large amounts of harvested data have limited the implementation of full-fledged systems. Limited network resources (e.g. battery power, storage space, bandwidth, etc.) make these issues quite challenging. This paper first investigates the effects of time synchronization error and data loss, aiming to clarify requirements on synchronization accuracy and communication reliability in SHM applications. Coordinated computing is then examined as a way to manage large amounts of data.
Key Words
    coordinated computing; data compression; distributed computing strategy; smart sensors; time synchronization; data loss; data aggregation.
T. Nagayama; Department of Civil Engineering, University of Tokyo, Tokyo 113-8656, Japan
S. H. Sim; Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
Y. Miyamori; Kitami Institute of Technology, Hokkaido 090-8507, Japan
B. F. Spencer, Jr.; Department of Civil Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA

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