Time synchronization of a wired sensor network for structural health monitoring

Ken Ichiro Ishikawa, Akira Mita

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

This paper introduces a time synchronization system for wired smart sensor networks to be applied to the structural health monitoring of gigantic structures. The jitter of sensor nodes in the wired network depends on the wire length between the origin and the destination of the time synchronization signals. The proposed system can theoretically achieve the accuracy to limit the jitter of sensors within 34ns by adjusting the timing depending on the wire length, and experimentally showed the jitter of 190m separation to be within 25ns. The proposed system uses local area network (LAN) cables and does not require additional cabling for synchronization. Thus the proposed synchronization system can be embedded in the sensor network with minimal cost.

Original languageEnglish
Article number015016
JournalSmart Materials and Structures
Volume17
Issue number1
DOIs
Publication statusPublished - 2008 Feb 1

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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