低温環境下で生じる熱影像温度計の測定誤差と温度補正に関する考察

DOI 日本農学文献記事索引 Web Site Web Site 被引用文献2件 参考文献19件

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タイトル別名
  • A Study on Measurement Error and Its Correction of Thermal Imagers under the Low Temperature Conditions.
  • テイオン カンキョウ カ デ ショウジル ネツ エイゾウ オンドケイ ノ ソクテイ ゴサ ト オンド ホセイ ニ カンスル コウサツ

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Surface temperatures measured by the thermal imager were often lower than those measured by the thermocouple thermometer under the low temperature conditions, e.g., during the night in the early spring and the winter. Some experiments were made in order to examine the cause of measurement errors by the thermal imager.<br>Water temperatures and cabbage leaf temperatures were measured in a normal temperature room (20°C), in a low temperature room (4°C), and outside the room, using three kinds of thermometers; thermocouple thermometer, thermal imager, and glass thermometer. The measurement errors by the nocturnal sky radiation were small in this experiment. On the other hand, the measurement errors of the thermal imager increased with decreasing temperature and attained to about 2-3°C in the low temperature room of 4°C. Measurement errors of the thermal imager depended on the body temperature of the camera.<br>The body temperature of the camera or the ambient air temperature seem to be available for correction of measurement error of the thermal imager under the low temperature conditions.

収録刊行物

  • 農業気象

    農業気象 55 (1), 33-40, 1999

    日本農業気象学会

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