SIMULTANEOUS MEASURING METHOD FOR DOPPLER MEASUREMENT AND DETECTION OF VIBRATION USING ULTRASONIC TRANSDUCER AND SIMULTANEOUS MEASURING INSTRUMENT ADAPTED THERETO

摘要

PROBLEM TO BE SOLVED: To provide a simultaneous measuring method for Doppler measurement and detection of vibration using an ultrasonic transducer capable of measuring a flow velocity distribution at every crack with high resolving power by suppressing a noise observed in the flow velocity distribution, and a simultaneous measuring instrument adapted thereto. SOLUTION: The simultaneous measuring instrument is equipped with a pulse Doppler viahole televiewer measuring system performing Doppler measurement using the ultrasonic transducer 1 and a series circuit A having a low-pass filter 3, an amplifier 4 and an integration circuit 5 in parallel to the measuring system to separate a low frequency component. The vibration of the ultrasonic transducer 1 is detected while performing Doppler measurement by the ultrasonic transducer 1 and the correction of the flow velocity distribution measured by a Doppler method is performed.