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SIMULTANEOUS MEASURING METHOD FOR DOPPLER MEASUREMENT AND DETECTION OF VIBRATION USING ULTRASONIC TRANSDUCER AND SIMULTANEOUS MEASURING INSTRUMENT ADAPTED THERETO
SIMULTANEOUS MEASURING METHOD FOR DOPPLER MEASUREMENT AND DETECTION OF VIBRATION USING ULTRASONIC TRANSDUCER AND SIMULTANEOUS MEASURING INSTRUMENT ADAPTED THERETO
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机译:超声换能器同时测量多普勒振动的同时测量方法及其所采用的同时测量仪器
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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.;COPYRIGHT: (C)2002,JPO
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