Develoment of high-sensitivity wireless strain sensor for structural health monitoring

Hongki Jo, Jong Woong Park, B. F. Spencer, Hyung Jo Jung

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Due to their cost-effectiveness and ease of installation, wireless smart sensors (WSS) have received considerable recent attention for structural health monitoring of civil infrastructure. Though various wireless smart sensor networks (WSSN) have been successfully implemented for full-scale structural health monitoring (SHM) applications, monitoring of low-level ambient strain still remains a challenging problem for WSS due to A/D converter (ADC) resolution, inherent circuit noise, and the need for automatic operation. In this paper, the design and validation of high-precision strain sensor board for the Imote2 WSS platform and its application to SHM of a cable-stayed bridge are presented. By accurate and automated balancing of the Wheatstone bridge, signal amplification of up to 2507-times can be obtained, while keeping signal mean close to the center of the ADC span, which allows utilization of the full span of the ADC. For better applicability to SHM for real-world structures, temperature compensation and shunt calibration are also implemented. Moreover, the sensor board has been designed to accommodate a friction-type magnet strain sensor, in addition to traditional foil-type strain gages, facilitating fast and easy deployment. The wireless strain sensor board performance is verified through both laboratory-scale tests and deployment on a full-scale cable-stayed bridge.

Original languageEnglish (US)
Pages (from-to)477-496
Number of pages20
JournalSmart Structures and Systems
Volume11
Issue number5
DOIs
StatePublished - May 2013
Externally publishedYes

Fingerprint

Structural health monitoring
Smart sensors
Sensors
Cable stayed bridges
Cost effectiveness
Strain gages
Metal foil
Sensor networks
Magnets
Amplification
Automation
Calibration
Friction
Networks (circuits)
Monitoring
Temperature

Keywords

  • Full-scale deployment
  • High-sensitivity strain sensor
  • Structural health monitoring
  • Wireless smart sensor

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering
  • Computer Science Applications

Cite this

Develoment of high-sensitivity wireless strain sensor for structural health monitoring. / Jo, Hongki; Park, Jong Woong; Spencer, B. F.; Jung, Hyung Jo.

In: Smart Structures and Systems, Vol. 11, No. 5, 05.2013, p. 477-496.

Research output: Contribution to journalArticle

Jo, Hongki ; Park, Jong Woong ; Spencer, B. F. ; Jung, Hyung Jo. / Develoment of high-sensitivity wireless strain sensor for structural health monitoring. In: Smart Structures and Systems. 2013 ; Vol. 11, No. 5. pp. 477-496.
@article{14ac86f26867482189e5053918393612,
title = "Develoment of high-sensitivity wireless strain sensor for structural health monitoring",
abstract = "Due to their cost-effectiveness and ease of installation, wireless smart sensors (WSS) have received considerable recent attention for structural health monitoring of civil infrastructure. Though various wireless smart sensor networks (WSSN) have been successfully implemented for full-scale structural health monitoring (SHM) applications, monitoring of low-level ambient strain still remains a challenging problem for WSS due to A/D converter (ADC) resolution, inherent circuit noise, and the need for automatic operation. In this paper, the design and validation of high-precision strain sensor board for the Imote2 WSS platform and its application to SHM of a cable-stayed bridge are presented. By accurate and automated balancing of the Wheatstone bridge, signal amplification of up to 2507-times can be obtained, while keeping signal mean close to the center of the ADC span, which allows utilization of the full span of the ADC. For better applicability to SHM for real-world structures, temperature compensation and shunt calibration are also implemented. Moreover, the sensor board has been designed to accommodate a friction-type magnet strain sensor, in addition to traditional foil-type strain gages, facilitating fast and easy deployment. The wireless strain sensor board performance is verified through both laboratory-scale tests and deployment on a full-scale cable-stayed bridge.",
keywords = "Full-scale deployment, High-sensitivity strain sensor, Structural health monitoring, Wireless smart sensor",
author = "Hongki Jo and Park, {Jong Woong} and Spencer, {B. F.} and Jung, {Hyung Jo}",
year = "2013",
month = "5",
doi = "10.12989/sss.2013.11.5.477",
language = "English (US)",
volume = "11",
pages = "477--496",
journal = "Smart Structures and Systems",
issn = "1738-1584",
publisher = "Techno Press",
number = "5",

}

TY - JOUR

T1 - Develoment of high-sensitivity wireless strain sensor for structural health monitoring

AU - Jo, Hongki

AU - Park, Jong Woong

AU - Spencer, B. F.

AU - Jung, Hyung Jo

PY - 2013/5

Y1 - 2013/5

N2 - Due to their cost-effectiveness and ease of installation, wireless smart sensors (WSS) have received considerable recent attention for structural health monitoring of civil infrastructure. Though various wireless smart sensor networks (WSSN) have been successfully implemented for full-scale structural health monitoring (SHM) applications, monitoring of low-level ambient strain still remains a challenging problem for WSS due to A/D converter (ADC) resolution, inherent circuit noise, and the need for automatic operation. In this paper, the design and validation of high-precision strain sensor board for the Imote2 WSS platform and its application to SHM of a cable-stayed bridge are presented. By accurate and automated balancing of the Wheatstone bridge, signal amplification of up to 2507-times can be obtained, while keeping signal mean close to the center of the ADC span, which allows utilization of the full span of the ADC. For better applicability to SHM for real-world structures, temperature compensation and shunt calibration are also implemented. Moreover, the sensor board has been designed to accommodate a friction-type magnet strain sensor, in addition to traditional foil-type strain gages, facilitating fast and easy deployment. The wireless strain sensor board performance is verified through both laboratory-scale tests and deployment on a full-scale cable-stayed bridge.

AB - Due to their cost-effectiveness and ease of installation, wireless smart sensors (WSS) have received considerable recent attention for structural health monitoring of civil infrastructure. Though various wireless smart sensor networks (WSSN) have been successfully implemented for full-scale structural health monitoring (SHM) applications, monitoring of low-level ambient strain still remains a challenging problem for WSS due to A/D converter (ADC) resolution, inherent circuit noise, and the need for automatic operation. In this paper, the design and validation of high-precision strain sensor board for the Imote2 WSS platform and its application to SHM of a cable-stayed bridge are presented. By accurate and automated balancing of the Wheatstone bridge, signal amplification of up to 2507-times can be obtained, while keeping signal mean close to the center of the ADC span, which allows utilization of the full span of the ADC. For better applicability to SHM for real-world structures, temperature compensation and shunt calibration are also implemented. Moreover, the sensor board has been designed to accommodate a friction-type magnet strain sensor, in addition to traditional foil-type strain gages, facilitating fast and easy deployment. The wireless strain sensor board performance is verified through both laboratory-scale tests and deployment on a full-scale cable-stayed bridge.

KW - Full-scale deployment

KW - High-sensitivity strain sensor

KW - Structural health monitoring

KW - Wireless smart sensor

UR - http://www.scopus.com/inward/record.url?scp=84878343647&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84878343647&partnerID=8YFLogxK

U2 - 10.12989/sss.2013.11.5.477

DO - 10.12989/sss.2013.11.5.477

M3 - Article

AN - SCOPUS:84878343647

VL - 11

SP - 477

EP - 496

JO - Smart Structures and Systems

JF - Smart Structures and Systems

SN - 1738-1584

IS - 5

ER -