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Adaptive spatio-temporal filtering of disturbed ECGs: a multi-channel approach to heartbeat detection in smart clothing

U. Wiklund ; M. Karlsson ; N. Östlund ; L. Berglin ; K. Lindecrantz ; S. Karlsson ; Leif Sandsjö (Institutionen för produkt- och produktionsutveckling)
Medical and Biological Engineering and Computing (0140-0118). Vol. 45 (2007), 6, p. 515-523.
[Artikel, refereegranskad vetenskaplig]

Intermittent disturbances are common in ECG signals recorded with smart clothing: this is mainly because of displacement of the electrodes over the skin. We evaluated a novel adaptive method for spatio-temporal filtering for heartbeat detection in noisy multi-channel ECGs including short signal interruptions in single channels. Using multi-channel database recordings (12-channel ECGs from 10 healthy subjects), the results showed that multi-channel spatio-temporal filtering outperformed regular independent component analysis. We also recorded seven channels of ECG using a T-shirt with textile electrodes. Ten healthy subjects performed different sequences during a 10-min recording: resting, standing, flexing breast muscles, walking and pushups. Using adaptive multi-channel filtering, the sensitivity and precision was above 97% in nine subjects. Adaptive multi-channel spatio-temporal filtering can be used to detect heartbeats in ECGs with high noise levels. One application is heartbeat detection in noisy ECG recordings obtained by integrated textile electrodes in smart clothing.

Nyckelord: multi-channel ECG, textile electrodes, heartbeat detection, independent, component analysis, noise reduction, blind source separation, qrs detection algorithms, health-care, signals



Denna post skapades 2013-01-28. Senast ändrad 2013-08-27.
CPL Pubid: 172285

 

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Institutioner (Chalmers)

Institutionen för produkt- och produktionsutveckling (1991-2017)

Ämnesområden

Textil-, gummi- och polymermaterial
Medicinteknik

Chalmers infrastruktur