An efficient energy management scheme for wireless sensor network-based structural health monitoring system using on-site earthquake early warning system and wake-on radio

Jiun Ting Ding, Shih-Lin Hung, Yung Chi Lu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The ability to provide a stable and durable energy supply for sensing nodes in a wireless sensors network (WSN) is an important research issue for WSNs in structural health monitoring (SHM) systems. Furthermore, a common approach to reduce energy consumption of sensors in a WSN is having control sensors periodically enter a low-power mode or sleep state. This, however, is challenging to implement in large-scale WSNs due to the need for faultless time synchronization. In practice, the sampling process will be delayed if a sensor node receives a sampling command but the node remains in listening-time cycle. Hence, the capabilities of external-radio triggering can improve stability and durability when integrated with a peripheral low-power circuit attached to sensing nodes. If sensors are in a low-power mode or sleep state, an effective approach is to transmit a wake-up command when specific start-up conditions are met to quickly awaken sensing nodes and work wirelessly. The aim of this work is to develop an efficient energy management scheme for a WSN-based SHM system by integrating an on-site earthquake early warning system and wake-on radio. A coordinator is integrated with WSN gateways and employed to link and synchronize all sensing nodes in advance through seismic prediction and radio-triggering technology. The simulation results reveal that the average power consumed was measured at about 350 µA for sensing nodes. Such a sensor will be more effective in measuring structural responses after an earthquake by increasing available sleep time, thereby saving energy and extending the life of such a wireless sensing system.

Original languageEnglish
Title of host publicationProceedings of the 28th International Ocean and Polar Engineering Conference, ISOPE 2018
PublisherInternational Society of Offshore and Polar Engineers
Pages1393-1399
Number of pages7
ISBN (Print)9781880653876
StatePublished - Jun 2018
Event28th International Ocean and Polar Engineering Conference, ISOPE 2018 - Sapporo, Japan
Duration: 10 Jun 201815 Jun 2018

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
Volume2018-June
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference28th International Ocean and Polar Engineering Conference, ISOPE 2018
CountryJapan
CitySapporo
Period10/06/1815/06/18

Keywords

  • Earthquake early warning (EEW)
  • Structural Health Monitoring (SHM)
  • Wake-On-Radio (WoR)
  • Wireless Sensor Network (WSN)

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