Automated wireless monitoring system for cable tension using smart sensors

Sung-Han Sim; Jian Li; Hongki Jo; Jongwoong Park; Soojin Cho; Billie F. Spencer Jr.; Chung-Bang Yun

doi:10.1117/12.2009552

19 April 2013 Automated wireless monitoring system for cable tension using smart sensors

Sung-Han Sim, Jian Li, Hongki Jo, Jongwoong Park, Soojin Cho, Billie F. Spencer Jr., Chung-Bang Yun

Proceedings Volume 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013; 86922B (2013) https://doi.org/10.1117/12.2009552
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2013, San Diego, California, United States

Abstract

Cables are critical load carrying members of cable-stayed bridges; monitoring tension forces of the cables provides valuable information for SHM of the cable-stayed bridges. Monitoring systems for the cable tension can be efficiently realized using wireless smart sensors in conjunction with vibration-based cable tension estimation approaches. This study develops an automated cable tension monitoring system using MEMSIC’s Imote2 smart sensors. An embedded data processing strategy is implemented on the Imote2-based wireless sensor network to calculate cable tensions using a vibration-based method, significantly reducing the wireless data transmission and associated power consumption. The autonomous operation of the monitoring system is achieved by AutoMonitor, a high-level coordinator application provided by the Illinois SHM Project Services Toolsuite. The monitoring system also features power harvesting enabled by solar panels attached to each sensor node and AutoMonitor for charging control. The proposed wireless system has been deployed on the Jindo Bridge, a cable-stayed bridge located in South Korea. Tension forces are autonomously monitored for 12 cables in the east, land side of the bridge, proving the validity and potential of the presented tension monitoring system for real-world applications.

Citation Download Citation

Sung-Han Sim, Jian Li, Hongki Jo, Jongwoong Park, Soojin Cho, Billie F. Spencer Jr., and Chung-Bang Yun "Automated wireless monitoring system for cable tension using smart sensors", Proc. SPIE 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013, 86922B (19 April 2013); https://doi.org/10.1117/12.2009552

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