| 摘要 |
<p>PURPOSE:To visualize the movement of a blood vessel by reading the blood pressures measured at a plurality of positions as voltage values at every definite time interval and calculating data showing the open state of the blood vessel from said voltage values and a plurality of said positions. CONSTITUTION:Blood pressure is measured at five places by five sensors S1-S5. These sensors S1-S5 respectively measure the displacement quantities of the diameter of a blood vessel due to blood pressure as analogue voltage values and supply said voltage values to the amplifying part 22 of a blood vessel movement analyzing part 20. The respective voltage values are amplified to required magnitudes in the amplifying part 22 to be sent to an A/D converter 24. The respective voltage values are respectively converted to digital voltage values of a required number of bits by the A/D converter 24 to be supplied to a voltage reading part 26. The voltage value reading part 26 reads the voltage values at the same measuring time in the order of the positions of the blood pressure sensors to supply the same to a D/A converter 28. The digital sample voltage values read in the order of the positions of the blood pressure measuring positions are converted to analogue sample voltage values by the D/A converter 28 to be outputted to a suitable display part 30 as the output of the blood vessel movement analyzing part 20.</p> |
