| 摘要 |
PURPOSE:To make the measurement of skin impedance easy, by providing an electric pressure measuring means to measure the direct current pressure impressed between a pair of electrodes with every pulse generating time and an electric current measuring means to measure the electric current flowing between a pair of electrodes at the time of impression of the direct current pressure with every pulse generating time. CONSTITUTION:CPU 5 impresses electric current I1 through the measuring resistance r1, the electrodes (search guides) 13, 13A, the skin impedance 1, the electrodes (grip guides) 12, 12A and the measuring resistance r2, by transmitting a signal 'a' to the output control section 4. CPU 5 also impresses electric current I2 through the measuring resistance r2, the electrodes 12, 12A, the skin impedance 1, the electrodes 13, 13A and the measuring resistance r1, by transmitting a signal 'b' to the output control section 4. Then, the electric potential difference of both ends of the measuring resistance r1 at the time when the electric current flows in the measuring resistance r1 as the result of the electrodes 12, 12A and 13, 13A touching the skin is amplified by the differential amplifier 6 and the skin impedance is computed based upon the signal 'd' from the differential amplifier 6, etc. |
