Autor segons l'article: Lazaro, Antonio; Boada, Marti; Villarino, Ramon; Girbau, David;
Departament: Enginyeria Electrònica, Elèctrica i Automàtica
Autor/s de la URV: Boada Navarro, Martí / Girbau Sala, David / Lázaro Guillén, Antonio Ramon / Villarino Villarino, Ramón Maria
Paraules clau: Tag System Smart diaper Sensor Radiofrequency identification Ph Near field communications Moisture sensor Dielectric-properties Constant Capacitive sensors Biological tissues
Resum: Modern disposable diapers are carefully designed to transport fluid away from the skin to prevent irritation and dermatitis. These devices are used not only for babies. In fact, they are increasingly used for the elderly since both average life expectancy and the number of people who need special care are increasing. Diapers must be changed to prevent skin rash caused by the skin being exposed to wetness for a long time and to high the pH levels of urine. However, it is not easy to check the state of diapers (of babies or the elderly) without removing the baby's or the elderly's clothes. In this paper, we propose a smart diaper equipped with a battery-less near field communication (NFC) tag. Moisture is detected by changes in capacitance between two electrodes located on the back sheet of the diaper, while capacitance is determined from the charge time through a high-value resistor using a microcontroller. The change in capacitance as a function of the wet conditions is simulated and measured. The tag is based on an NFC IC with energy harvesting. The power required to feed the electronics and microcontroller is obtained from the magnetic field generated by a smartphone with NFC used as a reader. A simple model is proposed to estimate the volume of urine in the diaper. We compare this approach with others in the literature and study how the capacitance is affected by the body and the materials.
Àrees temàtiques: Química Physics, applied Nutrição Medicina veterinaria Medicina ii Materiais Matemática / probabilidade e estatística Interdisciplinar Instruments & instrumentation Instrumentation Engineering, electrical & electronic Engenharias iv Engenharias iii Engenharias ii Engenharias i Electrical and electronic engineering Ciências biológicas ii Ciências biológicas i Ciência da computação Biotecnología Astronomia / física
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 1530437X
Adreça de correu electrònic de l'autor: antonioramon.lazaro@urv.cat david.girbau@urv.cat ramon.villarino@urv.cat
Identificador de l'autor: 0000-0003-3160-5777 0000-0001-7995-5536 0000-0001-9692-8943
Data d'alta del registre: 2024-10-26
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: https://ieeexplore.ieee.org/document/8788548
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Ieee Sensors Journal. 19 (22): 10848-10858
Referència de l'ítem segons les normes APA: Lazaro, Antonio; Boada, Marti; Villarino, Ramon; Girbau, David; (2019). Battery-Less Smart Diaper Based on NFC Technology. Ieee Sensors Journal, 19(22), 10848-10858. DOI: 10.1109/JSEN.2019.2933289
DOI de l'article: 10.1109/JSEN.2019.2933289
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2019
Tipus de publicació: Journal Publications