20.500.12556/RUL-131005 Design and clinical evaluation of a non-contact heart rate variability measuring device The object of the proposed paper is to design and analyze the performance of a non-contact heart rate variability (HRV) measuring device based on ultrasound transducers. The rationale behind non-contact HRV measurement is the goal of obtaining a means of long term monitoring of a patient’s heart performance. Due to its complexity as a non-contact measuring device, influential physical quantities, error source and other perturbations were thoroughly investigated. For medical purposes it is of utmost importance to define the target uncertainty of a measuring method from the side of physicians, while it is the role of scientists to realistically evaluate all uncertainty contributions. Within this paper we present a novelty method of non-contact HRV measurement based on ultrasound transducers operating at two frequencies simultaneously. We report laboratory results and clinical evaluations are given for healthy subjects as well as patients with known heart conditions. Furthermore, laboratory tests were conducted on subjects during a relaxation period, and after 1 min physical activity. heart rate measurement heart rate variability non-contact ultrasound clinical evaluation target uncertainty merjenje srčnega utripa spremenljivost srčnega utripa brezkontaktno merjenje ultrazvok klinično testiranje ciljna negotovost true false true Angleški jezik Slovenski jezik Članek v reviji 2021-09-21 10:51:19 2021-09-21 10:51:20 2022-09-10 04:09:20 0000-00-00 00:00:00 2017 0 0 18 str. iss. 11, art. 2637 Vol. 17 Nov. 2017 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.317:612.16 1424-8220 10.3390/s17112637 11961684 RAZ_Kranjec_Jure_2017.pdf RAZ_Kranjec_Jure_2017.pdf 1 A684B494B455187D3FEACDDD1B614C34 82b40bfbd829222dadaa5c0069922d5d08cfce1a8aed6ed28e8905988b1f2b86 1eb33c1b-1ab9-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=148227 http://www.mdpi.com/1424-8220/17/11/2637 1 d2d63f6d-1ab8-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=148226 Fakulteta za elektrotehniko 0 0 0