{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,3]],"date-time":"2026-01-03T04:36:23Z","timestamp":1767414983629,"version":"build-2065373602"},"reference-count":45,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2020,9,2]],"date-time":"2020-09-02T00:00:00Z","timestamp":1599004800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"This work has been supported by the Junta De Castilla y Le\u00f3n\u2014Consejer\u00eda De Econom\u00eda Y Empleo: System for simulation and training in advanced techniques for the occupational risk prevention through the design of hybrid-reality environments with ref J118. T","award":["EDU\/556\/2019"],"award-info":[{"award-number":["EDU\/556\/2019"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Electronics"],"abstract":"<jats:p>The current situation with COVID-19 is changing our courses of action toward ensuring health security. This is particularly crucial in airports, which usually receive more than 300,000 travellers in one single day. In this work, we present an Internet of Things (IoT) network to monitor the status of toilets and improve their maintenance. The system is based on IoT networks with different sensors to control soap levels, room capacity, distances, temperature, and humidity. This information is processed by a multi-agent system that detects possible anomalies and makes decisions accordingly. A case study in a real environment is developed in order to demonstrate the usefulness of the system. The results show that the proposed method can be used to successfully manage and control airport toilets.<\/jats:p>","DOI":"10.3390\/electronics9091430","type":"journal-article","created":{"date-parts":[[2020,9,2]],"date-time":"2020-09-02T09:29:28Z","timestamp":1599038968000},"page":"1430","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":30,"title":["Multi-Agent Approach Using LoRaWAN Devices: An Airport Case Study"],"prefix":"10.3390","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0976-2784","authenticated-orcid":false,"given":"Andr\u00e9","family":"Sales Mendes","sequence":"first","affiliation":[{"name":"Expert Systems and Applications Lab, Faculty of Science, University of Salamanca, Plaza de los Ca\u00eddos s\/n, 37008 Salamanca, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0291-7627","authenticated-orcid":false,"given":"Diego M.","family":"Jim\u00e9nez-Bravo","sequence":"additional","affiliation":[{"name":"Expert Systems and Applications Lab, Faculty of Science, University of Salamanca, Plaza de los Ca\u00eddos s\/n, 37008 Salamanca, Spain"}]},{"given":"Mar\u00eda","family":"Navarro-C\u00e1ceres","sequence":"additional","affiliation":[{"name":"Expert Systems and Applications Lab, Faculty of Science, University of Salamanca, Plaza de los Ca\u00eddos s\/n, 37008 Salamanca, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0446-9271","authenticated-orcid":false,"given":"Valderi","family":"Reis Quietinho Leithardt","sequence":"additional","affiliation":[{"name":"Laboratory of Embedded and Distribution Systems, University of Vale do Itaja\u00ed, Itaja\u00ed 88302-901, Brazil"},{"name":"COPELABS, Universidade Lus\u00f3fona de Humanidades e Tecnologias, 1749-024 Lisboa, Portugal"},{"name":"VALORIZA, Research Center for Endogenous Resources Valorization, Instituto Polit\u00e9cnico de Portalegre, 7300-555 Portalegre, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6536-2251","authenticated-orcid":false,"given":"Gabriel","family":"Villarrubia Gonz\u00e1lez","sequence":"additional","affiliation":[{"name":"Expert Systems and Applications Lab, Faculty of Science, University of Salamanca, Plaza de los Ca\u00eddos s\/n, 37008 Salamanca, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2020,9,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"60","DOI":"10.1109\/MWC.2016.7721743","article-title":"Long-range communications in unlicensed bands: The rising stars in the IoT and smart city scenarios","volume":"23","author":"Centenaro","year":"2016","journal-title":"IEEE Wirel. 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