布を介した電極からの容量性結合に基づく心電図導出

DOI Web Site Web Site 被引用文献10件 参考文献19件
  • 植野 彰規
    東京電機大学理工学部電子情報工学科
  • 古沢 洋一
    東京電機大学大学院理工学研究科応用電子工学専攻
  • 星野 洋
    東京電機大学大学院理工学研究科応用電子工学専攻
  • 石山 陽事
    杏林大学保健学部臨床生理学教室

書誌事項

タイトル別名
  • Detection of Electrocardiogram by Electrodes with Fabrics Using Capacitive Coupling
  • ヌノ オ カイシタ デンキョク カラ ノ ヨウリョウセイ ケツゴウ ニ モトヅク シンデンズ ドウシュツ

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This article reports on a novel technique for detecting electrocardiogram (ECG) at a condition where thin cloth is interpolated between sensing electrodes and the skin to which the electrodes are attached. The technique is based upon capacitive coupling composed of the electrode, the cloth and the skin, so that the electrode can lead alternating electrocardiographic current through capacitance of the coupling. The technique is also founded on impedance transforming circuit that has extremely high input impedance around 1000GΩ and low output impedance, so as to match high output impedance of the electrode to low input impedance required by subsequent circuitry. A pilot ECG measuring device was manufactured using the technique and experiments showed (1) ECG recordings using the device with silk of 240μm thickness or with cotton of 564μm thickness were quite similar to ECGs recorded from the skin using conventional system, (2) stable ECGs were observed with the silk below 600μm thickness or with the cotton below 1128μm thickness, (3) effects of long-term measurement and perspiration on ECG waveform were negligible. These results prove feasibility of the proposed technique for detecting ECG by electrodes with fabrics.

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