Automated wireless monitoring system for cable tension using smart sensors

Sung Han Sim, Jian Li, Hongki Jo, Jongwoong Park, Soojin Cho, B F Spencer, Chung Bang Yun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish (US)
Title of host publicationSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013
DOIs
StatePublished - Jun 12 2013
Event2013 SPIE Conference on Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013 - San Diego, CA, United States
Duration: Mar 10 2013Mar 14 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8692
ISSN (Print)0277-786X

Other

Other2013 SPIE Conference on Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013
CountryUnited States
CitySan Diego, CA
Period3/10/133/14/13

Keywords

  • Automated monitoring
  • Cable
  • Cable tension
  • Smart sensor
  • Structural health monitoring
  • Wireless smart sensor network

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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  • Cite this

    Sim, S. H., Li, J., Jo, H., Park, J., Cho, S., Spencer, B. F., & Yun, C. B. (2013). Automated wireless monitoring system for cable tension using smart sensors. In Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013 [86922B] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8692). https://doi.org/10.1117/12.2009552