Patent ID: 7894887

Claim:
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, 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.