BIOSIGNAL MEASURING DEVICE
First Claim
1. A biosignal measuring device, comprisingtwo channels respectively detecting bio-potential signals from a human body through two electrodes;
- a biosignal extracting unit including two detecting means respectively amplifying the bio-potential signals through amplifiers, respectively, differentially operating the amplified bio-potential signals through a differential operator, and selectively adopting respective output signals of the two detecting means to obtain a biosignal; and
to an impedance correcting means adjusting the amplitude of the amplifiers of the two detecting means so that the power of a common mode noise signal caused by an impedance imbalance between the channels and included in the obtained biosignal is reduced to suppress the common mode noise signal.
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Abstract
According to an embodiment of the present disclosure, a biosignal measuring device comprises two channels respectively detecting bio-potential signals from a human body through two electrodes, a biosignal extracting unit including two detecting means respectively amplifying the bio-potential signals through amplifiers, respectively, differentially operating the amplified bio-potential signals through a differential operator, and selectively adopting respective output signals of the two detecting means to obtain a biosignal, and an impedance correcting means adjusting the amplitude of the amplifiers of the two detecting means so that the power of a common mode noise signal caused by an impedance imbalance between the channels and included in the obtained biosignal is reduced to suppress the common mode noise signal.
38 Citations
11 Claims
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1. A biosignal measuring device, comprising
two channels respectively detecting bio-potential signals from a human body through two electrodes; -
a biosignal extracting unit including two detecting means respectively amplifying the bio-potential signals through amplifiers, respectively, differentially operating the amplified bio-potential signals through a differential operator, and selectively adopting respective output signals of the two detecting means to obtain a biosignal; and to an impedance correcting means adjusting the amplitude of the amplifiers of the two detecting means so that the power of a common mode noise signal caused by an impedance imbalance between the channels and included in the obtained biosignal is reduced to suppress the common mode noise signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A biosignal measuring device, comprising:
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a first amplifier connected with a first channel; a second amplifier connected with a second channel; a third amplifier configured to differentially operate respective outputs of the first amplifier and the second amplifier to output a noise-suppressed signal; and an impedance corrector configured to adjust the amplitude of the first amplifier and the second amplifier to reduce a common mode noise signal included in the noise-suppressed-signal.
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Specification