Autor según el artículo: Lazaro, Antonio; Boada, Marti; Villarino, Ramon; Girbau, David;
Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
Autor/es de la URV: Boada Navarro, Martí / Girbau Sala, David / Lázaro Guillén, Antonio Ramon / Villarino Villarino, Ramón Maria
Palabras clave: Tag System Smart diaper Sensor Radiofrequency identification Ph Near field communications Moisture sensor Dielectric-properties Constant Capacitive sensors Biological tissues
Resumen: 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.
Áreas temáticas: 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
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 1530437X
Direcció de correo del autor: antonioramon.lazaro@urv.cat david.girbau@urv.cat ramon.villarino@urv.cat
Identificador del autor: 0000-0003-3160-5777 0000-0001-7995-5536 0000-0001-9692-8943
Fecha de alta del registro: 2024-10-26
Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Ieee Sensors Journal. 19 (22): 10848-10858
Referencia 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
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2019
Tipo de publicación: Journal Publications