ディジタルフィルタを用いた光電脈波法による心拍数・呼吸数同時モニタ

DOI

書誌事項

タイトル別名
  • Photoplethysmography for Simultaneous Monitoring of Heart and Respiratory Rates Using Digital Filters.

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説明

A monitor for simultaneous recording of heart and respiratory rates has been developed using digital filters and photoplethysmography (PPG) with plastic optical fiber. PPG signal includes both heart and respiratory synchronous components. Digital filtering technique was employed to differentiate between those. With increasing heart and respiratory rates, the cut-off frequency of filter was changed empirically. Finite impulse response digital filters were designed using the Remez exchange algorithm. One filter for the heart-related signal was 40th order of Chebyshev type and the other filters for the respiration-related signal were 60th order of Chebyshev type. A suitable cut-off frequency of filter was selected empirically. The heart-related signal was detected by using a impulse response, while the respiration-related signal was detected by three impulse responses. One out of three impulse response was selected for the respiration-related signal. Heart and respiratory rate were increased with whole body heart stress i. e. bathing. The heart rates from 65 to 87 beats/min and the respiratory rates from 13 to 27 breath/min agreed with those obtained with ECG and thermistor. The digital filtering technique may provide on-line monitor for heart and respiratory rates.

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詳細情報 詳細情報について

  • CRID
    1390282679531793408
  • NII論文ID
    130004326879
  • DOI
    10.11239/jsmbe1963.31.360
  • ISSN
    21855498
    00213292
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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