Author, as appears in the article.: Boada M; Lazaro A; Villarino R; Girbau D

Department: Enginyeria Electrònica, Elèctrica i Automàtica

URV's Author/s: Lázaro Guillén, Antonio Ramon / Villarino Villarino, Ramón Maria

Keywords: Tag Smartphone Rfid Ph Network Near field communication Health Energy harvesting Color sensor Battery-less Antenna

Abstract: © 2013 IEEE. In this paper, we present a low-cost battery-less color sensor based on Near Field Communication (NFC). This system consists of a color sensor connected to a low-power microcontroller connected to an NFC chip. The energy needed to power up the chipset is retrieved from the magnetic field generated by the reader, i.e., a commercial smartphone. The low cost of NFC chips affords the opportunity to manufacture low-cost tags with sensing capability. We have developed a mobile application to simultaneously present the data and send them to a database in the cloud. The system has been tested with several pH reactive strips. The pH was determined via color measurement using the HSV color space. A simple linear relationship was found between the Hue parameter and the pH. Comparison with the pH determination via smartphone camera showed that the accuracy was greater when the NFC colorimeter was used.

Thematic Areas: Telecommunications Materials science (miscellaneous) Materials science (all) General materials science General engineering General computer science Engineering, electrical & electronic Engineering (miscellaneous) Engineering (all) Engenharias iv Engenharias iii Electrical and electronic engineering Computer science, information systems Computer science (miscellaneous) Computer science (all) Ciência da computação

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 21693536

Author's mail: ramon.villarino@urv.cat antonioramon.lazaro@urv.cat

Author identifier: 0000-0001-9692-8943 0000-0003-3160-5777

Record's date: 2023-02-18

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://ieeexplore.ieee.org/abstract/document/8664004

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Ieee Access. 7 33226-33239

APA: Boada M; Lazaro A; Villarino R; Girbau D (2019). Battery-Less NFC Sensor for pH Monitoring. Ieee Access, 7(), 33226-33239. DOI: 10.1109/ACCESS.2019.2904109

Article's DOI: 10.1109/ACCESS.2019.2904109

Entity: Universitat Rovira i Virgili

Journal publication year: 2019

Publication Type: Journal Publications