title: Robust respiration rate estimation using adaptive Kalman filtering with textile ECG sensor and accelerometer.
abstract: An adaptive Kalman filter-based fusion algorithm capable of estimating respiration rate for unobtrusive respiratory monitoring is proposed. Using both signal characteristics and a priori information, the Kalman filter is adaptively optimized to improve accuracy. Furthermore, the system is able to combine the respiration-related signals extracted from a textile ECG sensor and an accelerometer to create a single robust measurement. We measured derived respiratory rates and, when compared to a reference, found root-mean-square error of 2.11 breaths-per-minute (BrPM) while lying down, 2.30 BrPM while sitting, 5.97 BrPM while walking, and 5.98 BrPM while running. These results demonstrate that the proposed system is applicable to unobtrusive monitoring for various applications.
authors.forename: Nicholas N
authors.initials: NN
authors.lastname: Lepine
authors.forename: Takuro
authors.initials: T
authors.lastname: Tajima
authors.forename: Takayuki
authors.initials: T
authors.lastname: Ogasawara
authors.forename: Ryoichi
authors.initials: R
authors.lastname: Kasahara
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Koizumi
mesh_terms: D061725:Accelerometry / Q000379:methods; D000465:Algorithms; D004562:Electrocardiography / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic / Q000379:methods; D011187:Posture; D056152:Respiratory Rate / Q000502:physiology*; D012815:Signal Processing, Computer-Assisted; D013784:Textiles; D016138:Walking