Concrete Temperature Monitoring Using Passive Wireless Surface Acoustic Wave Sensor System

Keywords

Concrete; Orthogonal frequency coding (OFC); Surface acoustic wave (SAW) sensor; Temperature

Abstract

In this paper, a novel nondestructive method for detecting temperature variations of concrete using a passive wireless surface acoustic wave (SAW) sensor system is described. Performance of the SAW orthogonal frequency coded (OFC) temperature sensors was evaluated in air, liquid, and concrete. To verify the response of the SAW sensor, temperature was also measured using commercially available thermocouples and compared with the extracted temperature in all environmental conditions. Analysis of the measured data showed that the SAW temperature sensor system was successful in detecting temperature over a wide range in all tested conditions with a high degree of accuracy and short interrogation time. When the sensors were embedded within a 2-in. thick concrete cover, the maximum read distance was approximately 4 m.

Publication Date

4-1-2015

Publication Title

Sensors and Actuators, A: Physical

Volume

224

Number of Pages

131-139

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.sna.2015.01.028

Socpus ID

84923201385 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84923201385

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