| 摘要 |
A biosignal sensing device ( 2 ) includes an electrode section ( 12 ) including a pair of electrodes ( 12 a ,12 b) mounted so that a living body can be in close proximity to or in contact with the electrodes. An oscillation section ( 11 ) supplies a high frequency signal to the electrodes. A reflected-wave level from the electrodes receiving the high frequency signal changes according to a change in impedance in the electrodes that are in close proximity to or in contact with the living body. This change in reflected-wave level reflects a change in impedance resulting from body movement of the living body such as respiration and pulsation. A sensing section ( 13 ) senses a signal indicating the change in reflected-wave level. Based on this signal, a signal amplifying section ( 14 ) calculates a desired biosignal such as pulse rate and respiration rate.
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