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UHF RFID tag design for AC current sensing

Ullah, Irfan, Horne, Robert, Sanz-Izquierdo, Benito, Batchelor, John C. (2019) UHF RFID tag design for AC current sensing. In: Antennas and Propagation Conference 2019 (APC-2019). . IET ISBN 978-1-83953-170-5. (doi:10.1049/cp.2019.0728) (KAR id:81764)

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Official URL
http://dx.doi.org/10.1049/cp.2019.0728

Abstract

This study reports the development of an ac current sensing technique using a capacitance sensing UHF RFID tag which is integrated with a current transformer (CT). A new tag antenna design is created to integrate with the CT housing while maintaining the tag link. The terminals of the capacitance sensing RFID chip are connected to a tuning circuit with a reactance controlled by the current flow in the primary of the CT. A prototype tag was tested to validate the battery-free compact tag that streams current measurement data over a read range of about 5 m using the European RFID UHF band at 868 MHz. The tag could be used for wirelessly sensing the load current of an individual domestic appliance and where a single reader could simultaneously monitor multiple tags, enabling smart reading of electricity consumption across multiple devices in smart homes.

Item Type: Conference or workshop item (Proceeding)
DOI/Identification number: 10.1049/cp.2019.0728
Uncontrolled keywords: UHF antennas; electric current measurement; radiofrequency identification; current transformers
Subjects: Q Science
T Technology
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Irfan Ullah
Date Deposited: 18 Jun 2020 12:05 UTC
Last Modified: 16 Feb 2021 14:13 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/81764 (The current URI for this page, for reference purposes)
Ullah, Irfan: https://orcid.org/0000-0002-4439-7404
Horne, Robert: https://orcid.org/0000-0003-3476-5987
Sanz-Izquierdo, Benito: https://orcid.org/0000-0001-7313-2520
Batchelor, John C.: https://orcid.org/0000-0002-5139-5765
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