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Due to the color change feature of thermochromic materials with temperature, 3D-printed thermochromic Polylactic Acid (PLA) material was used to monitor temperature changes visually. In this paper, we have used the transfer learning technique and fine-tuned the AlexNet CNN. Thirty images for each temperature class between 28\u201344\u00b0C and 510 image data were used in the algorithm. We used 80% and 20% of the data for training and validation. We achieved 96.1% accuracy of validation with a fine-tuned AlexNet CNN. The material\u2019s characteristics suggest that it could be employed in delicate temperature sensing and monitoring applications, particularly for hypothermia and hyperthermia.<\/jats:p>","DOI":"10.1177\/09544119241266375","type":"journal-article","created":{"date-parts":[[2024,8,6]],"date-time":"2024-08-06T03:15:24Z","timestamp":1722914124000},"page":"827-836","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["A deep learning-based real-time hypothermia and hyperthermia monitoring system with a simple body sensor"],"prefix":"10.1177","volume":"238","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2830-3700","authenticated-orcid":false,"given":"Egemen Nazife","family":"Yazlik","sequence":"first","affiliation":[{"name":"Department of Electrical and Energy, Nevsehir Haci Bektas Veli University, Nevsehir, Merkez, Turkiye"},{"name":"Graduate School of Natural and Applied Sciences, Erciyes University, Kayseri, Turkiye"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Omer Galip","family":"Saracoglu","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronic Engineering, Erciyes University, Kayseri, Turkiye"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2024,8,6]]},"reference":[{"key":"bibr1-09544119241266375","doi-asserted-by":"publisher","DOI":"10.3390\/s18082414"},{"key":"bibr2-09544119241266375","first-page":"4652","volume":"2020","author":"Rajbhandary PL","year":"2020","journal-title":"Annu Int Conf IEEE Eng Med Biol Soc"},{"key":"bibr3-09544119241266375","unstructured":"Del Bene VE. 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