| 摘要 |
<p>PURPOSE:To perform surely detection of a pulse by detecting the pulse from an output of a comparing means comparing sizes of signals from the 1st and the 2nd rectification means. CONSTITUTION:A measurement by means of a pulse meter is performed in such a way that an examined person grasps an electrode 11 with his right hand and an electrode 12 with his left hand and a grounded electrode 10 is made to be a common electrode of his right and left hands but a signal wherein a signal of an electrocardiograph potential and a signal of a frequency of a commercial electric source are superimposed appears between the electrodes 11 and 12 and it is inputted into a differential amplifier 13 wherein it is amplified and only the signal of the electrocardiograph potential is amplified and output. Then, it is given to a band path filter 14 and to the 1st rectification circuit 15A and is rectified with the 1st charge time const. and in addition, it is inputted in a rectification circuit 15B having the 2nd charge time const. which is larger than the 1st charge time const. and it is compared by means of an electric voltage comparator 16 and the output is treated by means of a microprocessor to calculate the number of pulse and finally, the result of the calculation 1s displayed on a display part 18.</p> |
