A wireless vibrating wire sensor node for continuous structural health monitoring

H. M. Lee, J. M. Kim, K. Sho, Hyo Seon Park

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Vibrating wire sensors(VWS) are generally used for strain measurements of structures in buildings and civil infrastructures. In this paper, a wireless vibrating wire sensor node is developed which can measure resonance frequencies from vibrating wire sensors and can remotely communicate the frequencies by wireless. The wireless sensor node consists of a sensor module, which excites the vibrating wire and reads the resonance frequencies, a wireless communication module, which transmits the wire's resonance frequencies to the user or administrator, and a processor that controls the two modules. The wireless sensor node has the following characteristics: it has multiple channels to enable measurement of multiple vibrating wire sensors (up to four) using a single sensor node; it has a power-saving feature that enables operation for up to one year; and lastly, the wireless unit uses the 424MHz UHF (ultra-high frequency) band with good diffraction that has an effect on minimizing the influence of impediments such as structural or nonstructural elements. The wireless sensor node is tested in terms of its measurement precision and its wireless communication performance. As a result, it is confirmed that the node enables the long-term structural health monitoring of buildings and infrastructures.

Original languageEnglish
Article number055004
JournalSmart Materials and Structures
Volume19
Issue number5
DOIs
Publication statusPublished - 2010 Apr 28

Fingerprint

structural health monitoring
Structural health monitoring
Sensor nodes
wire
Wire
sensors
Sensors
modules
wireless communication
Strain measurement
Communication
strain measurement
ultrahigh frequencies
Frequency bands
central processing units
Diffraction

All Science Journal Classification (ASJC) codes

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

Cite this

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A wireless vibrating wire sensor node for continuous structural health monitoring. / Lee, H. M.; Kim, J. M.; Sho, K.; Park, Hyo Seon.

In: Smart Materials and Structures, Vol. 19, No. 5, 055004, 28.04.2010.

Research output: Contribution to journalArticle

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