PRESSURE MEASURING APPARATUS INSIDE A VESSEL USING ACOUSTIC IMPEDANCE MATCHING LAYERS

摘要

PURPOSE: A pressure measuring device using an acoustic impedance variation is provided to increase the ultrasonic wave output and receiving efficiency. CONSTITUTION: A pressure measuring device using an acoustic impedance variation comprises an ultrasonic wave excitation part(20), a first acoustic impedance conformal layer(50a), an ultrasonic receiver(30), a second acoustic impedance conformal layer(50b), a controller(22) and a pressure measurement part(60). The first acoustic impedance conformal layer increases the transfer efficiency of the ultrasonic wave outputted from the ultrasonic wave excitation part. The second acoustic impedance conformal layer increases the receiving efficiency of the ultrasonic wave received by the ultrasonic receiver. The pressure measurement part measures the inner pressure of a trough based on the ultrasonic signal received in the ultrasonic receiver.