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The device is based on capacitive sensing by means of an LC oscillator. Experimental results show that the sensor meets the necessary requirements, making feasible the proposed monitoring system with the technology used.<\/jats:p>","DOI":"10.3390\/s140203019","type":"journal-article","created":{"date-parts":[[2014,2,14]],"date-time":"2014-02-14T12:37:22Z","timestamp":1392381442000},"page":"3019-3032","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":27,"title":["Design and Implementation of a Smart Sensor for Respiratory Rate Monitoring"],"prefix":"10.3390","volume":"14","author":[{"given":"Juan","family":"Luis","sequence":"first","affiliation":[{"name":"OnTech Security Enterprise, C\/Lucena del Puerto, Huelva E-21002, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Laura","family":"Roa Romero","sequence":"additional","affiliation":[{"name":"Biomedical Engineering Group, University of Seville, Avda de los Descubrimientos, s\/n, Seville E-41092, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Juan","family":"G\u00f3mez-Gal\u00e1n","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering, Computers, and Automatic, University of Huelva, Ctra Huelva, La R\u00e1bida, s\/n, Huelva 21819, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Hern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Biomedical Engineering Group, University of Seville, Avda de los Descubrimientos, s\/n, Seville E-41092, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miguel","family":"Estudillo-Valderrama","sequence":"additional","affiliation":[{"name":"Biomedical Engineering Group, University of Seville, Avda de los Descubrimientos, s\/n, Seville E-41092, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gerardo","family":"Barbarov-Rost\u00e1n","sequence":"additional","affiliation":[{"name":"Biomedical Engineering Group, University of Seville, Avda de los Descubrimientos, s\/n, Seville E-41092, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carlos","family":"Rubia-Marcos","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering, Computers, and Automatic, University of Huelva, Ctra Huelva, La R\u00e1bida, s\/n, Huelva 21819, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2014,2,14]]},"reference":[{"key":"ref_1","unstructured":"Torres-Cebri\u00e1n, A., Sarlabous-Uranga, L., Fiz Fern\u00e1ndez, J.A., Gea Guiral, J., Mart\u00ednez Llorens, J.M., Morera Prat, J.M., and Jan\u00e9 Campos, R. (2010, January 24\u201326). Evaluation of the Activity of the Inspiratory Muscles by Mechanomyographic Signals in COPD Patients during a Protocol of Load Experimental. Madrid, Spain."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"269","DOI":"10.1164\/rccm.200911-1746OC","article-title":"Obstructive sleep apnea-hypopnea and incident stroke: The sleep heart health study","volume":"182","author":"Redline","year":"2010","journal-title":"Am. J. Respir. Crit. Care Med."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Jimison, J.B., Pavel, M., Pavel, J., and McKanna, J. (2004, January 1\u20134). Home Monitoring of Computer Interactions for the Early Detection of Dementia. San Francisco, CA, USA,.","DOI":"10.1109\/IEMBS.2004.1404258"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"6897","DOI":"10.3390\/s90906897","article-title":"Detecting specific health-related events using an integrated sensor system for vital sign monitoring","volume":"9","author":"Adnane","year":"2009","journal-title":"Sensors"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"625","DOI":"10.1378\/chest.120.2.625","article-title":"Overnight pulse oximetry for sleep-disordered breathing in adults","volume":"120","author":"Nikolaus","year":"2001","journal-title":"Chest J."},{"key":"ref_6","first-page":"45","article-title":"Polysomnography and other sleep studies","volume":"61","author":"Segarra","year":"2010","journal-title":"Acta Otorrinolaringol. Esp."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"857","DOI":"10.1016\/j.sleep.2007.09.002","article-title":"Predictors of primary medical care consultation for sleep disorders","volume":"9","author":"Barttlet","year":"2008","journal-title":"Sleep Med."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"787","DOI":"10.1109\/TITB.2011.2131670","article-title":"Unobtrusive assessment of motor patterns during sleep based on mattress indentation measurements","volume":"15","author":"Verhaert","year":"2011","journal-title":"IEEE Trans. Inf. Technol. Biomed."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Malakuti, K., and Albu, A.B. (2010, January 23\u201326). Towards an Intelligent Bed Sensor: Non-Intrusive Monitoring of Sleep Irregularities with Computer Vision Techniques. Istanbul, Turkey.","DOI":"10.1109\/ICPR.2010.974"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"836","DOI":"10.1183\/09031936.00077409","article-title":"Nasopharyngoscopic evaluation of oral appliance therapy for obstructive sleep apnea","volume":"35","author":"Chan","year":"2010","journal-title":"Eur. Respir. J."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"97","DOI":"10.1023\/A:1014627029818","article-title":"Hydrogel-actuated capacitive transducer for wireless biosensors","volume":"4","author":"Strong","year":"2002","journal-title":"Biomed. Micro-Devices"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"128","DOI":"10.1109\/JMEMS.2003.809968","article-title":"Fabricating capacitive micro machined ultra-sonic transducers with wafer-bonding technology","volume":"12","author":"Huang","year":"2003","journal-title":"J. Microelectromech. Syst."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"71","DOI":"10.1109\/JSEN.2008.2010356","article-title":"Textile-based capacitive sensors for respiration monitoring","volume":"9","author":"Merritt","year":"2009","journal-title":"IEEE Sens. J."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1016\/0924-4247(90)85011-R","article-title":"Passive silicon transensor intended for biomedical, remote pressure monitoring","volume":"21","author":"Backlund","year":"1990","journal-title":"Sens. Actuator A"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"432","DOI":"10.1016\/j.sna.2003.09.015","article-title":"A readout circuit for an intra-ocular pressure sensor","volume":"110","author":"Coosemans","year":"2004","journal-title":"Sens. Actuator A"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1016\/S0924-4247(98)00255-6","article-title":"Low power integrated pressure sensor for medical application","volume":"73","author":"Hierold","year":"1999","journal-title":"Sens. Actuator A"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"112","DOI":"10.1109\/TNSRE.2003.822759","article-title":"Inclination measurement of human movement using a 30D accelerometer with auto calibration","volume":"2","author":"Luinge","year":"2004","journal-title":"IEEE Trans. Neural Syst. Rehabil."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Ho-Oum, J., Koo, H., and Hong, S. (2008, January 20\u201325). Non-contact Heartbeat Sensor using LC Oscillator Circuit. Canada.","DOI":"10.1109\/IEMBS.2008.4650200"},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Jiusheng, H., Zhan Cheng, W., and Shanghe, L. (1997, January 25). Why the Human Body Capacitance is So Large. Orlando, FL, USA.","DOI":"10.1109\/EOSESD.1997.634236"},{"key":"ref_20","unstructured":"S\u0103lceanu, A., Neac\u015fu, O., David, V., and Lunc\u0103, E. (2004). Measurements upon Human Body Capacitance: Theory and Experimental Setup, RTD National Programme CEEX."},{"key":"ref_21","unstructured":"Seaver, A.E. (2, January 29). Human Body Capacitance : A Review. Nashville, TN, USA."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/14\/2\/3019\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T21:08:11Z","timestamp":1760216891000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/14\/2\/3019"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,2,14]]},"references-count":21,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2014,2]]}},"alternative-id":["s140203019"],"URL":"https:\/\/doi.org\/10.3390\/s140203019","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2014,2,14]]}}}