目視角度の影響を考慮した感温液晶法による温度計測と熱対流現象への応用

フォーマット:

論文

責任表示:

藤沢, 延行 ; 松浦, 勉 ; 船谷, 俊平 ; 弦巻, 明

言語:

日本語

出版情報:

日本機械学会, 2000-03-25

著者名:

• 藤沢, 延行
• 松浦, 勉
• 船谷, 俊平
• 弦巻, 明

掲載情報:

日本機械学會論文集. B編

ISSN:

0387-5016    

巻:

66

通号:

643

開始ページ:

761

終了ページ:

767

バージョン:

VoR

概要:

application/pdf<br />Journal Article<br />Field temperature measurement technique with encapsulated liquid crystal particles suspended in a liquid has been investigated considering the viewing angle effect on the color to temperature transformation. Two calibration techniques are studied, one is a neural network and the other is a spline fitting technique, where the calibration points are distributed over the image plane in order to consider the … viewing angle effect. The calibration study is carried out with uniform temperature field image captured at various temperatures. It is found that the calibration error due to the viewing angle variation is reduced with an increase in the number of calibration points and by the introduction of smoothing technique. It is found that the spline fitting technique is superior to the neural network technique considering the evaluated temperature error and computing time. The spline fitting technique is applied to the temperature measurement of thermal convection over a heated surface and the thermal structures generated near the top and bottom boundaries are discussed. 続きを見る