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Proceedings Paper

Design of a low-power wireless structural monitoring system for collaborative computational algorithms
Author(s): Yang Wang; Jerome P. Lynch; Kincho H. Law
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Paper Abstract

In this study, a new wireless sensing unit for operation within an automated Structural Health Monitoring (SHM) system is proposed, designed and validated. The design of the wireless sensing unit emphasizes minimization of its power consumption characteristics to ensure it is suited for long-term field deployment in civil structures. The wireless modem integrated with the unit has a long communication range that permits wireless sensors to be spaced over 100m apart. A multi-channel high-resolution analog-to-digital converter is included within each sensing unit to provide flexibility for high-fidelity data collection. A key feature of the wireless sensing unit design is the inclusion of a sophisticated computing core that is capable of locally executing engineering algorithms in real-time. As part of the embedded software, a novel communication protocol is written that can accomplish low-latency communications for accurate time synchronization between spatially distributed wireless sensors. To illustrate the capabilities of the wireless monitoring platform, including the execution of extensive computational tasks, a prototype system is fabricated and tested in the laboratory and field. As part of validating the system performance in the field, the vertical acceleration response of the Geumdang Bridge under traffic loading is measured by 14 wireless sensing unit prototypes.

Paper Details

Date Published: 9 May 2005
PDF: 12 pages
Proc. SPIE 5768, Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV, (9 May 2005); doi: 10.1117/12.600387
Show Author Affiliations
Yang Wang, Stanford Univ. (United States)
Jerome P. Lynch, Univ. of Michigan/Ann Arbor (United States)
Kincho H. Law, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 5768:
Health Monitoring and Smart Nondestructive Evaluation of Structural and Biological Systems IV
Tribikram Kundu, Editor(s)

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