Biosignal measuring equipment
First Claim
1. Biosignal measuring equipment comprising:
- a plurality of electrode units disposed in left and right positions of a steering wheel; and
a measuring means for measuring a biosignal associated with a subject using designated ones of the plurality of electrode units, the subject capable of holding the steering wheel using the left and right positions,wherein the measuring means measures a plurality of biosignals using the designated ones of the plurality of electrode units and determines final information on the basis of the plurality of measured biosignals, whereineach of the plurality of electrode units includes a first electrode and a second electrode; and
the measuring means includes;
a differential amplification means for producing a biosignal by amplifying a difference between two input signals;
an impedance measurement means for measuring an impedance between two electrodes;
a switching circuit unit that connects the first and second electrodes of the each of the each of the plurality of electrode units to one of the differential amplification means, the impedance measurement means, and a reference potential; and
an arithmetic control means for measuring a plurality of biosignals from the subject by connecting the electrodes of each of the electrode units to the one of the differential amplification means, impedance measurement means, and the reference potential via the switching circuit unit, and for deducing a final complex.
1 Assignment
0 Petitions
Accused Products
Abstract
A signal-to-noise ratio and measurement precision is increased in electrode units disposed on the left and right sides of a steering wheel. A plurality of electrode units is disposed in the left and right handholds of a steering wheel. The contact impedances of all the electrode units are measured. A pair of left and right electrode units to be used to measure an electrocardiographic signal is designated from among the electrode units whose measured contact impedances are less than or equal to a first threshold. The results of measurement of an electrocardiographic signal by the designated electrode units are added in order to minimize noise. An electrode unit with high contact impedance is used to measure induction noise and remove the induction noise component from the electrocardiographic signal measurement result.
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Citations
27 Claims
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1. Biosignal measuring equipment comprising:
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a plurality of electrode units disposed in left and right positions of a steering wheel; and a measuring means for measuring a biosignal associated with a subject using designated ones of the plurality of electrode units, the subject capable of holding the steering wheel using the left and right positions, wherein the measuring means measures a plurality of biosignals using the designated ones of the plurality of electrode units and determines final information on the basis of the plurality of measured biosignals, wherein each of the plurality of electrode units includes a first electrode and a second electrode; and the measuring means includes; a differential amplification means for producing a biosignal by amplifying a difference between two input signals; an impedance measurement means for measuring an impedance between two electrodes; a switching circuit unit that connects the first and second electrodes of the each of the each of the plurality of electrode units to one of the differential amplification means, the impedance measurement means, and a reference potential; and an arithmetic control means for measuring a plurality of biosignals from the subject by connecting the electrodes of each of the electrode units to the one of the differential amplification means, impedance measurement means, and the reference potential via the switching circuit unit, and for deducing a final complex. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An information processing apparatus included in a steering wheel of a vehicle, the apparatus capable of measuring a biosignal associated with a subject that places hands on standard hand positions of the steering wheel while operating the vehicle, the apparatus comprising:
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a plurality of electrodes disposed in a left position and a right position of the steering wheel, the plurality of electrodes positioned so as to correspond to the standard hand positions, ones of the plurality of electrodes capable of being formed into a measurement pair that includes one of a left one and a right one of the plurality of electrodes, two left ones of the plurality of electrodes, and two right ones of the plurality of electrodes; a switching unit coupled to each of the plurality of electrodes, the switching unit connecting two of the plurality of electrodes to form the measurement pair; and a common unit coupled to the plurality of electrodes and the switching unit, the common unit configured to control the switching unit so as to control the formation of the measurement pair and change the formation of the measurement pair in order to determine a suitability of each of the plurality of electrodes for measurement operations of a biomedical complex associated with the subject based on a first quantity and allocating ones of the plurality electrodes to the measurement operations based on the first quantity, wherein the common unit is configured to measure one of a plurality of values including biosignals with allocated ones of the plurality of electrodes and to determine final information including a final biomedical complex, the common unit including a differential amplifier for producing a biosignal by amplifying a difference between the two electrodes that form the measurement pair, an impedance measurement device for measuring an impedance between the two electrodes that form the measurement pair, and an arithmetic control device for measuring a plurality of biosignals from the subject by connecting the electrodes to one of the differential amplifier, the impedance measurement device, and a reference potential via the switching unit, and for determining the final complex. - View Dependent Claims (25, 26, 27)
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Specification