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- Title
UHF RFID system for wirelessly detection of corrosion based on resonance frequency shift in forward interrogation power.
- Authors
Soodmand, Soheyl; Aobo Zhao; Gui Yun Tian
- Abstract
A radio frequency identification (RFID) based system is developed in this paper as a novel passive wireless sensor to detect corrosion for structural health monitoring (SHM) of metallic surface through simulation, design, fabrication and experiment. Firstly, a 2D label-type antenna in a new configuration - circular three arm (CTA) element - is designed as an ultrahigh frequency (UHF) RFID sensor tag working on surface of steel samples. To improve gain and power transmission coefficient, a parasitic element has been added into the centre of CTA. The CTA antenna attached with the parasitic element - so called (CTAP) sensor - has a quality factor notably higher than similar metal mountable UHF RFID antennas that has been resulted to revelation of resonance frequency in measured forward interrogation power. A demonstration and validation system are introduced then to detect corrosion based on the shift of revealed resonance frequency in the forward interrogation power to activate the CTAP tag when placed on surface of corroded and non-corroded steel samples. Results show that the presented system could communicate with sensor tag to detect corrosion up to 2 m of read monitoring range at the UHF RFID standard bandwidth with a sensitivity around of 13 MHz.
- Subjects
RADIO frequency identification systems; STRUCTURAL health monitoring; UHF devices; WIRELESS sensor nodes; RESONANCE frequency analysis
- Publication
IET Microwaves, Antennas & Propagation (Wiley-Blackwell), 2018, Vol 12, Issue 12, p1877
- ISSN
1751-8725
- Publication type
Article
- DOI
10.1049/iet-map.2018.0143