A wireless smart sensor network for automated monitoring of cable tension

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As cables are primary load carrying members in cable-stayed bridges, monitoring the tension forces of the cables provides valuable information regarding structural soundness. Incorporating wireless smart sensors with vibration-based tension estimation methods provides an efficient means of autonomous long-term monitoring of cable tensions. This study develops a wireless cable tension monitoring system using MEMSIC's Imote2 smart sensors. The monitoring system features autonomous operation, sustainable energy harvesting and power consumption, and remote access using the internet. To obtain the tension force, an in-network data processing strategy associated with the vibration-based tension estimation method is implemented on the Imote2-based sensor network, significantly reducing the wireless data transmission and the power consumption. The proposed monitoring system has been deployed and validated on the Jindo Bridge, a cable-stayed bridge located in South Korea.
Publisher
IOP PUBLISHING LTD
Issue Date
2014-02
Language
English
Article Type
Article
Keywords

SYSTEM-IDENTIFICATION; DAMAGE DETECTION; BRIDGE; VIBRATION; FRAMEWORK

Citation

SMART MATERIALS AND STRUCTURES, v.23, no.2

ISSN
0964-1726
DOI
10.1088/0964-1726/23/2/025006
URI
http://hdl.handle.net/10203/188671
Appears in Collection
CE-Journal Papers(저널논문)
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