Energy-efficient and fault-tolerant structural health monitoring in wireless sensor networks

Md Zakirul Alam Bhuiyan, Jiannong Cao, Guojun Wang, Xuefeng Liu

Research output: Journal article publicationConference articleAcademic researchpeer-review

16 Citations (Scopus)

Abstract

Wireless sensor networks (WSNs) have become an increasingly compelling platform for structural health monitoring (SHM) due to relatively low-cost, easy installation, etc. However, the challenge of effectively monitoring structural health condition (e.g., damage) under WSN constraints (e.g., limited energy, narrow bandwidth) and sensor faults has not been studied before. In this paper, we focus on tolerating sensor faults in WSN-based SHM. We design a distributed WSN framework for SHM and then examine its ability to cope with sensor faults. We bring attention to an undiscovered yet interesting fact, i.e., the real measured signals introduced by faulty sensors may cause an undamaged location to be identified as damaged (false positive) or a damaged location as undamaged (false negative) diagnosis. This can be caused by faults in sensor bonding, precision degradation, amplification gain, bias, drift, noise, and so forth. We present a distributed algorithm to detect such types of faults, and offer an online signal reconstruction algorithm to recover from the wrong diagnosis. Through simulations and a WSN prototype system, we evaluate the effectiveness of our proposed algorithms.
Original languageEnglish
Article number6424870
Pages (from-to)301-310
Number of pages10
JournalProceedings of the IEEE Symposium on Reliable Distributed Systems
DOIs
Publication statusPublished - 1 Dec 2012
Event31st IEEE International Symposium on Reliable Distributed Systems, SRDS 2012 - Irvine, CA, United States
Duration: 8 Oct 201211 Oct 2012

Keywords

  • energy-efficiency
  • fault detection
  • fault tolerance
  • structural health monitoring
  • Wireless sensor networks

ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Hardware and Architecture
  • Computer Networks and Communications

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