Velocity Measurement in Liquid Using Frequency Characteristics of S parameter at the Electrical Port of Transducer

4 Citations 7 References
  • SAKAKIDA Naka
    Department of Electrical & Electronic Engineering, Mining College, Akita University
  • IMANO Kazuhiko
    Department of Electrical & Electronic Engineering, Mining College, Akita University
  • INOUE Hiroshi
    Department of Electrical & Electronic Engineering, Mining College, Akita University

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Other Title
  • 電気端子からみたSパラメータの周波数特性を用いた液体の音速測定

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Description

The measurement system for sound velocity in liquid using continuous wave signal is modeled by the cascade connection of transmission lines which correspond to sample, ultrasonic transducer with backing and reflector. From the calculated results of S-parameter at the electrical port of the transducer, sound velocity v can be obtained both from the frequency periods Δf of frequency-S parameter characteristics and the sample length L. Transducer's resonance effect is subtracted from f-S parameter characteristics to extract the accurate information of velocity. For the precise measurement, an improved method for obtaining L are described. The experiment with water at 20℃ and frequency of 5 MHz is carried out to evaluate our method and system. Experimental result shows agreement between our method and literature within 0.1% has been established.

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Details 詳細情報について

  • CRID
    1571980077313382016
  • NII Article ID
    110003187971
  • NII Book ID
    AN1001290X
  • Text Lang
    ja
  • Data Source
    • CiNii Articles

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