PROBLEM TO BE SOLVED: To provide a fluid pulsation pressure measuring device that can be worn continuously, capable of performing calibration easily and simply without using a special measuring instrument separately when continuously measuring the pressure of a fluid flowing in a conduit.SOLUTION: A fluid pulsation pressure measuring device equipped with at least two conduit diameter sensors 1 and 2 arranged apart from each other measures a reflection arrival time at signal calculation parts 11 and 21 by transmitting and receiving a wave to and from a conduit present in an object to be measured by one sensor or the other sensor, derives a water head difference by height position determination parts 24 and 28 based on a distance between each sensor, derives an amount of change in the conduit and a diameter difference of the conduit by a pulse pressure signal calculation part 31, and finds a pressure difference between the maximum value and the minimum value of the fluid pressure in the conduit calibrated using the water head difference.COPYRIGHT: (C)2014,JPO&INPIT【課題】導管内を流動する液体の圧力を常時計測する場合に、別途特別な計測機器を用いずに簡易に校正ができる常時装着可能な流体脈動圧計測装置を提供する。【解決手段】互いに離間して配置された少なくとも2つの導管径センサー1,2を備えた流体脈動圧計測装置は、一方及び他方のセンサーによって、計測対象部に内在する導管に波動を送受信することで反射到達時間を信号演算部11,21で計測し、各センサー間の距離に基づいて高さ位置決定部24,28により水頭差を導き出し、脈圧信号演算部31で導管の変化量と、導管の径差とを導き出して、水頭差を用いて校正される導管内の流体圧の最大値と最小値との圧力差を求める。【選択図】図3
