Adaptive cancellation of floor vibrations in standing ballistocardiogram measurements using a seismic sensor as a noise reference

Omer T. Inan, Mozziyar Etemadi, Bernard Widrow, Gregory T A Kovacs

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

An adaptive noise canceller was used to reduce the effect of floor vibrations on ballistocardiogram (BCG) measurements from a modified electronic bathroom scale. A seismic sensor was placed next to the scale on the floor and used as the noise reference input to the noise canceller. BCG recordings were acquired from a healthy subject while another person stomped around the scale, thus causing increased floor vibrations. The noise canceller substantially eliminated the artifacts in the BCG signal due to these vibrations without distorting the morphology of the measured BCG. Additionally, recordings were obtained from another subject standing inside a parked bus while the engine was running. The artifacts due to the vibrations of the engine, and the other vehicles moving on the road next to the bus, were also effectively eliminated by the noise canceller. The system with automatic floor vibration cancellation could be used to increase BCG measurement robustness in home monitoring applications. Additionally, the noise cancellation approach may enable BCG recording in ambulances-or other transport vehicles-where noninvasive hemodynamic monitoring may otherwise not be feasible.

Original languageEnglish (US)
Article number4812084
Pages (from-to)722-727
Number of pages6
JournalIEEE Transactions on Biomedical Engineering
Volume57
Issue number3
DOIs
StatePublished - Mar 1 2010

Keywords

  • Adaptive noise cancellation
  • Ballistocardiogram (BCG)
  • Cardiovascular disease
  • Physiological monitoring

ASJC Scopus subject areas

  • Biomedical Engineering

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