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Implementation and wireless readout of passive UHF RFID strain sensor tags based on electro-textile antennas

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

Details

Original languageEnglish
Title of host publicationEuropean Conference on Antennas and Propagation April 12-17, 2015 • Lisbon, Portugal
PublisherIEEE
Number of pages5
ISBN (Print)978-88-907018-5-6
Publication statusPublished - Apr 2015
Publication typeA4 Article in a conference publication
EventEuropean Conference on Antennas and Propagation -
Duration: 1 Jan 1900 → …

Conference

ConferenceEuropean Conference on Antennas and Propagation
Period1/01/00 → …

Abstract

Sensing capabilities embedded in a passive UHF RFID tag provide a battery-free wireless sensor equipped with a digital identifier. We present an RFID strain sensor tag based on a stretchable antenna made of conductive fabrics. To create an efficient antenna for the sensor tag, we use non-stretchable and highly conductive copper-coated fabric to form the main antenna body and join a section of stretchable conductive fabric by means of sewing with conductive thread. We test wirelessly two different sensors with 1 cm and 3 cm stretchable sections and characterize them in terms of the maximal sensor readout distance and the response of its backscatter strength to the antenna elongation. Our results show that the percentage change in the backscatter strength is in approximately linear relation with the antenna elongation.

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