Real-time monitoring of refrigerated storage using a wireless sensor network: development and validation of the UMITEMP system.

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dc.contributorMURILO SANTOS FREIRE, UNIVERSIDADE FEDERAL DO VALE DO SÃO FRANCISCO; DANIEL DOS SANTOS COSTA, UNIVERSIDADE FEDERAL DO VALE DO SÃO FRANCISCO; ALISSON PEREIRA DOS SANTOS, UNIVERSIDADE FEDERAL DO VALE DO SÃO FRANCISCO; SERGIO TONETTO DE FREITAS, CPATSA; MAGNO DO NASCIMENTO AMORIM, INSTITUTO FEDERAL GOIANO; SILVIA HELENA NOGUEIRA TURCO, UNIVERSIDADE FEDERAL DO VALE DO SÃO FRANCISCO.
dc.creatorFREIRE, M. S.
dc.creatorCOSTA, D, dos S.
dc.creatorSANTOS, A. P. dos
dc.creatorFREITAS, S. T. de
dc.creatorAMORIM, M. dos N.
dc.creatorTURCO, S. H. N.
dc.date2026-05-19T11:48:43Z
dc.date2026-05-19T11:48:43Z
dc.date2026-05-19
dc.date2026
dc.date.accessioned2026-07-07T06:02:01Z
dc.descriptionThe objective of this study was to develop and validate UMITEMP, an intuitive system for real-time monitoring of air temperature (Ta) and relative humidity (RH) in cold rooms for table grape storage. The system integrates hardware and software with wireless radio-frequency communication and a web-based interface. A wireless sensor network (WSN) was distributed within the cold room, collecting data every minute and displaying it in interactive charts and maps. Individual calibration of capacitive humidity sensors was required to ensure accuracy. WSN signal quality was unaffected by wall insulation or sensor distance. During the experimental period, RH ranged from 71% to 100%, averaging 85%, below the recommended level for seedless grape storage. The average Ta was 0.4°C, slightly above the ideal range, with maxima of 5.4°C and minima of −1.9°C. Internal spatial variability was observed, with lower Ta and RH variance than in the adjacent corridor, which was more influenced by external conditions and showed temperature increases during weekdays. Results demonstrate that UMITEMP is an effective tool for continuous real-time monitoring of cold rooms, supporting proper management of fresh fruit storage, such as table grapes.
dc.identifierJournal of Food Process Engineering, v. 49, n. 5, e70570, 2026.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1186937
dc.identifierhttps://doi.org/10.1111/jfpe.70570
dc.identifier.urihttp://hdl.handle.net/123456789/504829
dc.languageeng
dc.rightsopenAccess
dc.subjectArmazenamento em câmara fria
dc.subjectMonitoramento em tempo real
dc.subjectAplicações web
dc.subjectRede de sensores sem fio
dc.subjectUMITEMP
dc.subjectUva de mesa
dc.subjectFrutas fresca
dc.subjectCamera fria
dc.subjectUva
dc.subjectPós-Colheita
dc.subjectGrapes
dc.subjectSeedless varieties
dc.titleReal-time monitoring of refrigerated storage using a wireless sensor network: development and validation of the UMITEMP system.
dc.typeArtigo de periódico

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