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Proceedings Paper

Wireless structural health monitoring of cable-stayed bridge using Imote2-platformed smart sensors
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Paper Abstract

In this study, wireless structural health monitoring (SHM) system of cable-stayed bridge is developed using Imote2- platformed smart sensors. In order to achieve the objective, the following approaches are proposed. Firstly, vibrationand impedance-based SHM methods suitable for the pylon-cable-deck system in cable-stayed bridge are briefly described. Secondly, the multi-scale vibration-impedance sensor node on Imote2-platform is presented on the design of hardware components and embedded software for vibration- and impedance-based SHM. In this approach, a solarpowered energy harvesting is implemented for autonomous operation of the smart sensor node. Finally, the feasibility and practicality of the multi-scale sensor system is experimentally evaluated on a real cable-stayed bridge, Hwamyung Bridge in Korea. Successful level of wireless communication and solar-power supply for smart sensor nodes are verified. Also, vibration and impedance responses measured from the target bridge which experiences various weather conditions are examined for the robust long-term monitoring capability of the smart sensor system.

Paper Details

Date Published: 26 March 2012
PDF: 15 pages
Proc. SPIE 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, 83450T (26 March 2012); doi: 10.1117/12.917543
Show Author Affiliations
Duc-Duy Ho, Pukyong National Univ. (Korea, Republic of)
Khac-Duy Nguyen, Pukyong National Univ. (Korea, Republic of)
Po-Young Lee, Pukyong National Univ. (Korea, Republic of)
Dong-Soo Hong, Pukyong National Univ. (Korea, Republic of)
So-Young Lee, Pukyong National Univ. (Korea, Republic of)
Jeong-Tae Kim, Pukyong National Univ. (Korea, Republic of)
Sung-Woo Shin, Pukyong National Univ. (Korea, Republic of)
Chung-Bang Yun, KAIST (Korea, Republic of)
Masanobu Shinozuka, Univ. of California, Irvine (United States)


Published in SPIE Proceedings Vol. 8345:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012
Masayoshi Tomizuka; Chung-Bang Yun; Jerome P. Lynch, Editor(s)

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