Preliminary study of low-cost GPS receivers for time synchronization of wireless sensor networks

R. Kim, T. Nagayama, Hongki Jo, B. F. Spencer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Citations (Scopus)

Abstract

Growing public concern regarding the health of the aging civil infrastructure has spurred research in structural health monitoring (SHM). Recent advances in wireless smart sensor (WSS) technology has significantly lowered the cost of SHM systems and resulted in WSS being successfully implemented at full-scale. However, assuring accurate timesynchronized WSS nodes in a network is still a challenging problem. Generally, WSS synchronization is realized by communicating a sensors' CPU clock information over the network. However, such a synchronization approach becomes more challenging as the network size increases. Reliable communication is not easily achieved due to longer communication distance, larger numbers of sensors, and complexity of a distributed sensor network. Moreover, CPU clocks may not be sufficiently reliable for accurate time-synchronization due to substantial tolerance errors in crystal and/or temperature effects. In this study, the use of low-cost GPS receivers for time synchronizing WSSs is explored to resolve these issues. GPS sensors offer the potential to provide high-accuracy synchronization - nano-second level even with low-cost GPS receivers. The GPS-assisted time synchronization approach overcomes network communication limitations to realize time-synchronization in large-scale networks of WSS.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8345
DOIs
StatePublished - 2012
Externally publishedYes
EventSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012 - San Diego, CA, United States
Duration: Mar 12 2012Mar 15 2012

Other

OtherSensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012
CountryUnited States
CitySan Diego, CA
Period3/12/123/15/12

Fingerprint

time synchronization
Smart Sensors
Time Synchronization
Wireless Sensors
Smart sensors
Wireless Sensor Networks
Global positioning system
Wireless sensor networks
Synchronization
Receiver
receivers
sensors
Costs
Health Monitoring
Sensor
Structural health monitoring
Program processors
Clocks
synchronism
Sensors

Keywords

  • Low-cost GPS
  • Structural Health Monitoring
  • Time synchronization
  • Wireless sensors

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kim, R., Nagayama, T., Jo, H., & Spencer, B. F. (2012). Preliminary study of low-cost GPS receivers for time synchronization of wireless sensor networks. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8345). [83451A] https://doi.org/10.1117/12.915394

Preliminary study of low-cost GPS receivers for time synchronization of wireless sensor networks. / Kim, R.; Nagayama, T.; Jo, Hongki; Spencer, B. F.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8345 2012. 83451A.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kim, R, Nagayama, T, Jo, H & Spencer, BF 2012, Preliminary study of low-cost GPS receivers for time synchronization of wireless sensor networks. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8345, 83451A, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, San Diego, CA, United States, 3/12/12. https://doi.org/10.1117/12.915394
Kim R, Nagayama T, Jo H, Spencer BF. Preliminary study of low-cost GPS receivers for time synchronization of wireless sensor networks. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8345. 2012. 83451A https://doi.org/10.1117/12.915394
Kim, R. ; Nagayama, T. ; Jo, Hongki ; Spencer, B. F. / Preliminary study of low-cost GPS receivers for time synchronization of wireless sensor networks. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8345 2012.
@inproceedings{d4ee010abfe54e188e043003fd4da455,
title = "Preliminary study of low-cost GPS receivers for time synchronization of wireless sensor networks",
abstract = "Growing public concern regarding the health of the aging civil infrastructure has spurred research in structural health monitoring (SHM). Recent advances in wireless smart sensor (WSS) technology has significantly lowered the cost of SHM systems and resulted in WSS being successfully implemented at full-scale. However, assuring accurate timesynchronized WSS nodes in a network is still a challenging problem. Generally, WSS synchronization is realized by communicating a sensors' CPU clock information over the network. However, such a synchronization approach becomes more challenging as the network size increases. Reliable communication is not easily achieved due to longer communication distance, larger numbers of sensors, and complexity of a distributed sensor network. Moreover, CPU clocks may not be sufficiently reliable for accurate time-synchronization due to substantial tolerance errors in crystal and/or temperature effects. In this study, the use of low-cost GPS receivers for time synchronizing WSSs is explored to resolve these issues. GPS sensors offer the potential to provide high-accuracy synchronization - nano-second level even with low-cost GPS receivers. The GPS-assisted time synchronization approach overcomes network communication limitations to realize time-synchronization in large-scale networks of WSS.",
keywords = "Low-cost GPS, Structural Health Monitoring, Time synchronization, Wireless sensors",
author = "R. Kim and T. Nagayama and Hongki Jo and Spencer, {B. F.}",
year = "2012",
doi = "10.1117/12.915394",
language = "English (US)",
isbn = "9780819490025",
volume = "8345",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - Preliminary study of low-cost GPS receivers for time synchronization of wireless sensor networks

AU - Kim, R.

AU - Nagayama, T.

AU - Jo, Hongki

AU - Spencer, B. F.

PY - 2012

Y1 - 2012

N2 - Growing public concern regarding the health of the aging civil infrastructure has spurred research in structural health monitoring (SHM). Recent advances in wireless smart sensor (WSS) technology has significantly lowered the cost of SHM systems and resulted in WSS being successfully implemented at full-scale. However, assuring accurate timesynchronized WSS nodes in a network is still a challenging problem. Generally, WSS synchronization is realized by communicating a sensors' CPU clock information over the network. However, such a synchronization approach becomes more challenging as the network size increases. Reliable communication is not easily achieved due to longer communication distance, larger numbers of sensors, and complexity of a distributed sensor network. Moreover, CPU clocks may not be sufficiently reliable for accurate time-synchronization due to substantial tolerance errors in crystal and/or temperature effects. In this study, the use of low-cost GPS receivers for time synchronizing WSSs is explored to resolve these issues. GPS sensors offer the potential to provide high-accuracy synchronization - nano-second level even with low-cost GPS receivers. The GPS-assisted time synchronization approach overcomes network communication limitations to realize time-synchronization in large-scale networks of WSS.

AB - Growing public concern regarding the health of the aging civil infrastructure has spurred research in structural health monitoring (SHM). Recent advances in wireless smart sensor (WSS) technology has significantly lowered the cost of SHM systems and resulted in WSS being successfully implemented at full-scale. However, assuring accurate timesynchronized WSS nodes in a network is still a challenging problem. Generally, WSS synchronization is realized by communicating a sensors' CPU clock information over the network. However, such a synchronization approach becomes more challenging as the network size increases. Reliable communication is not easily achieved due to longer communication distance, larger numbers of sensors, and complexity of a distributed sensor network. Moreover, CPU clocks may not be sufficiently reliable for accurate time-synchronization due to substantial tolerance errors in crystal and/or temperature effects. In this study, the use of low-cost GPS receivers for time synchronizing WSSs is explored to resolve these issues. GPS sensors offer the potential to provide high-accuracy synchronization - nano-second level even with low-cost GPS receivers. The GPS-assisted time synchronization approach overcomes network communication limitations to realize time-synchronization in large-scale networks of WSS.

KW - Low-cost GPS

KW - Structural Health Monitoring

KW - Time synchronization

KW - Wireless sensors

UR - http://www.scopus.com/inward/record.url?scp=84861122291&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861122291&partnerID=8YFLogxK

U2 - 10.1117/12.915394

DO - 10.1117/12.915394

M3 - Conference contribution

AN - SCOPUS:84861122291

SN - 9780819490025

VL - 8345

BT - Proceedings of SPIE - The International Society for Optical Engineering

ER -