Unobtrusive Inter-beat Interval Estimation from Multichannel Ballistocardiogram Signal Using Kalman Filter

Unobtrusively detecting inter-beat interval (IBI) from ballistocardiogram (BCG) is useful for monitoring cardiac activity at home, especially for calculating heart rate variability (HRV), the critical indicator to evaluate heart health. Compared to single-sensor system in most studies, this research used a bed-embedded 9 by 2 array sensors system to improve measurement coverage and precision of IBI estimation. Based on this system, we proposed a mode-switch based algorithm to solve the problem on array sensor signal selection and multichannel data fusion using linear regression model and Kalman filter. In addition, a peak detection algorithm was designed to estimate IBI from each channel signal. The algorithm was validated by approximately 48 hours BCG recordings captured from 24 subjects with different sleeping positions. A mean absolute error of 31ms at 83% average coverage was obtained by the proposed method, which has proven to be a promising candidate for IBI estimation from BCG signal on multichannel array sensors system.

[1]  Richard M. Wiard,et al.  Robust ballistocardiogram acquisition for home monitoring , 2009, Physiological measurement.

[2]  A. Malliani,et al.  Heart rate variability. Standards of measurement, physiological interpretation, and clinical use , 1996 .

[3]  T. Başar,et al.  A New Approach to Linear Filtering and Prediction Problems , 2001 .

[4]  Steffen Leonhardt,et al.  ECG on the Road: Robust and Unobtrusive Estimation of Heart Rate , 2011, IEEE Transactions on Biomedical Engineering.

[5]  D. Altman,et al.  Measuring agreement in method comparison studies , 1999, Statistical methods in medical research.

[6]  Marjorie Skubic,et al.  Robust heartbeat detection from in-home ballistocardiogram signals of older adults using a bed sensor , 2015, 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC).

[7]  S. A. Talbot,et al.  Proposals for Ballistocardiographic Nomenclature and Conventions: Revised and Extended Report of Committee on Ballistocardiographic Terminology , 1956, Circulation.

[8]  Biyong Zhang,et al.  A Correlation-Based Algorithm for Beat-to-Beat Heart Rate Estimation from Ballistocardiograms , 2019, 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC).

[9]  Template-Based Statistical Modeling and Synthesis for Noise Analysis of Ballistocardiogram Signals: A Cycle-Averaged Approach , 2019, IEEE Journal of Biomedical and Health Informatics.

[10]  Izumi Nishidate,et al.  Unconstrained cardiorespiratory and body movement monitoring system for home care , 2005, Medical and Biological Engineering and Computing.

[11]  Omer T. Inan,et al.  Quantifying the effects of blood pressure changes on ballistocardiogram signals , 2017, 2017 25th Signal Processing and Communications Applications Conference (SIU).

[12]  Gerhard Tröster,et al.  Detecting Disordered Breathing and Limb Movement Using In-Bed Force Sensors , 2017, IEEE Journal of Biomedical and Health Informatics.

[13]  S Leonhardt,et al.  Robust inter-beat interval estimation in cardiac vibration signals , 2013, Physiological measurement.

[14]  Steffen Leonhardt,et al.  Ambient and Unobtrusive Cardiorespiratory Monitoring Techniques , 2015, IEEE Reviews in Biomedical Engineering.

[15]  Steffen Leonhardt,et al.  Improvement of Force-Sensor-Based Heart Rate Estimation Using Multichannel Data Fusion , 2015, IEEE Journal of Biomedical and Health Informatics.

[16]  Willis J. Tompkins,et al.  A Real-Time QRS Detection Algorithm , 1985, IEEE Transactions on Biomedical Engineering.

[17]  Steffen Leonhardt,et al.  Robust Sensor Fusion of Unobtrusively Measured Heart Rate , 2014, IEEE Journal of Biomedical and Health Informatics.

[18]  F. Shaffer,et al.  An Overview of Heart Rate Variability Metrics and Norms , 2017, Front. Public Health.

[19]  Omer Inan,et al.  Classification of Decompensated Heart Failure From Clinical and Home Ballistocardiography , 2020, IEEE Transactions on Biomedical Engineering.

[20]  Karl D. Fritscher,et al.  Ejection Wave Segmentation for Contact-Free Heart Rate Estimation from Ballistocardiographic Signals , 2019, 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC).

[21]  Hannu Toivonen,et al.  Adaptive Heartbeat Modeling for Beat-to-Beat Heart Rate Measurement in Ballistocardiograms , 2015, IEEE Journal of Biomedical and Health Informatics.