A wireless smart sensor network for automated monitoring of cable tension

Sung Han Sim, Jian Li, Hongki Jo, Jong Woong Park, Soojin Cho, Billie F. Spencer, Hyung Jo Jung

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article number025006
JournalSmart Materials and Structures
Volume23
Issue number2
DOIs
StatePublished - Feb 1 2014

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Keywords

  • autonomous monitoring
  • cable tension
  • embedded processing
  • vibration
  • wireless smart sensor

ASJC Scopus subject areas

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

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