Sudden event monitoring of civil infrastructure using demand-based wireless smart sensors

Yuguang Fu, Tu Hoang, Kirill Mechitov, Jong R. Kim, Dichuan Zhang, Billie F. Spencer

Research output: Contribution to journalArticle

Abstract

Wireless smart sensors (WSS) have been proposed as an effective means to reduce the high cost of wired structural health monitoring systems. However, many damage scenarios for civil infrastructure involve sudden events, such as strong earthquakes, which can result in damage or even failure in a matter of seconds. Wireless monitoring systems typically employ duty cycling to reduce power consumption; hence, they will miss such events if they are in power-saving sleep mode when the events occur. This paper develops a demand-based WSS to meet the requirements of sudden event monitoring with minimal power budget and low response latency, without sacrificing high-fidelity measurements or risking a loss of critical information. In the proposed WSS, a programmable event-based switch is implemented utilizing a low-power trigger accelerometer; the switch is integrated in a high-fidelity sensor platform. Particularly, the approach can rapidly turn on the WSS upon the occurrence of a sudden event and seamlessly transition from low-power acceleration measurement to high-fidelity data acquisition. The capabilities of the proposed WSS are validated through laboratory and field experiments. The results show that the proposed approach is able to capture the occurrence of sudden events and provide high-fidelity data for structural condition assessment in an efficient manner.

Original languageEnglish (US)
Article number4480
JournalSensors (Switzerland)
Volume18
Issue number12
DOIs
StatePublished - Dec 1 2018

Keywords

  • Data fusion
  • Demand-based nodes
  • Event-triggered sensing
  • Sudden event monitoring
  • Wireless smart sensors

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

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