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The\ufb02exiblesensorsareinsertedintopartsclosetothekneeandhipoftheloosepatientcloth. We measure electrical signals from the sensors caused by the piezoelectric effect when the knee and hip in the cloth are bent. The measured sensor outputs are transferred to a computer via Bluetooth. We use a custom-made program to detect the position of the patient through a rule-based algorithm and the sensor outputs. The detectable postures are based on six human motions in and around a bed. The proposed system can detect the patient positions with a success rate over 88 percent for three patients.<\/jats:p>","DOI":"10.3390\/s17030584","type":"journal-article","created":{"date-parts":[[2017,3,13]],"date-time":"2017-03-13T10:26:18Z","timestamp":1489400778000},"page":"584","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":43,"title":["Patient Posture Monitoring System Based on Flexible Sensors"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0239-2469","authenticated-orcid":false,"given":"Youngsu","family":"Cha","sequence":"first","affiliation":[{"name":"Center for Robotics Research, Korea Institute of Science and Technology, Seoul 02792, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kihyuk","family":"Nam","sequence":"additional","affiliation":[{"name":"Center for Robotics Research, Korea Institute of Science and Technology, Seoul 02792, Korea"},{"name":"Department of Mechanical Engineering, Hanyang University, Seoul 04763, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Doik","family":"Kim","sequence":"additional","affiliation":[{"name":"Center for Robotics Research, Korea Institute of Science and Technology, Seoul 02792, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2017,3,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"544","DOI":"10.1016\/j.jbi.2012.02.007","article-title":"A framework for the comparison of mobile patient monitoring systems","volume":"45","author":"Pawar","year":"2012","journal-title":"J. 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