低消費電力で稼働する一次元超音波風速温度計

書誌事項

タイトル別名
  • A New, Low-Power Consumption, One-Dimensional Sonic Anemometer-thermometer.
  • New Low-Power Consumption One-Dimensional Sonic Anemometer-thermometer

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抄録

A low power (0.1W) and light weight (probe weight 270g and circuit weight 80g) one-dimensional sonic anemometer-thermometer was developed. The measuring span of the anemometer is 10cm, sound frequency is 40kHz and alternation frequency of the sound direction is 78Hz. The low power consumption was attained by using ceramic transducers, which can be driven by low voltage pulses (5V peak-to-peak) and by adapting CMOS logic to the circuit.<br>A field test was carried out in a coniferous forest with a commercial sonic anemometer and a fine thermocouple thermometer. Comparison of the output signal and spectra from each sonic anemometer indicated good agreement.<br>The characteristics of the sonic anemometer-thermometer are low power consumption and light weight. These features are useful for measurements from a small tethered balloon or at places where the electrical power is limited.

収録刊行物

  • 農業気象

    農業気象 55 (2), 109-115, 1999

    日本農業気象学会

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