Autor según el artículo: Lazaro A, Boada M, Villarino R, Girbau D

Departamento: Enginyeria Electrònica, Elèctrica i Automàtica

Autor/es de la URV: Boada Navarro, Martí / Lázaro Guillén, Antonio Ramon / Villarino Villarino, Ramón Maria

Palabras clave: Support vector machine (svm) Radio frequency identification (rfid) Near field communication Machine learning Internet of things (iot) Foods Food quality Energy harvesting Color sensor Classification Battery-less

Resumen: This paper presents a color-based classification system for grading the ripeness of fruit using a battery-less Near Field Communication (NFC) tag. The tag consists of a color sensor connected to a low-power microcontroller that is connected to an NFC chip. The tag is powered by the energy harvested from the magnetic field generated by a commercial smartphone used as a reader. The raw RGB color data measured by the colorimeter is converted to HSV (hue, saturation, value) color space. The hue angle and saturation are used as features for classification. Different classification algorithms are compared for classifying the ripeness of different fruits in order to show the robustness of the system. The low cost of NFC chips means that tags with sensing capability can be manufactured economically. In addition, nowadays, most commercial smartphones have NFC capability and thus a specific reader is not necessary. The measurement of different samples obtained on different days is used to train the classification algorithms. The results of training the classifiers have been saved to the cloud. A mobile application has been developed for the prediction based on a table-based method, where the boundary decision is downloaded from a cloud service for each product. High accuracy, between 80 and 93%, is obtained depending on the kind of fruit and the algorithm used.

Áreas temáticas: Zootecnia / recursos pesqueiros Química Medicine (miscellaneous) Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Linguística e literatura Letras / linguística Interdisciplinar Instruments & instrumentation Instrumentation Information systems Geografía Geociências Farmacia Engineering, electrical & electronic Engenharias iv Engenharias iii Engenharias ii Engenharias i Electrochemistry Electrical and electronic engineering Educação física Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, analytical Biotecnología Biodiversidade Biochemistry Atomic and molecular physics, and optics Astronomia / física Arquitetura, urbanismo e design Analytical chemistry

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 14248220

Direcció de correo del autor: ramon.villarino@urv.cat antonioramon.lazaro@urv.cat

Identificador del autor: 0000-0001-9692-8943 0000-0003-3160-5777

Fecha de alta del registro: 2023-02-22

Versión del articulo depositado: info:eu-repo/semantics/publishedVersion

Enlace a la fuente original: https://www.mdpi.com/1424-8220/19/7/1741

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: Sensors. 19 (7):

Referencia de l'ítem segons les normes APA: Lazaro A, Boada M, Villarino R, Girbau D (2019). Color Measurement and Analysis of Fruit with a Battery-Less NFC Sensor. Sensors, 19(7), -. DOI: 10.3390/s19071741

DOI del artículo: 10.3390/s19071741

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2019

Tipo de publicación: Journal Publications