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For accurate control of ambient air temperature and humidity in plant growing area in phytotron and growth chamber, sensing method were examined under radiation. In the case that feedback sensors were... equipped in the return air duct, ambient air temperature and humidity in plant growing area were different from the desired values. On the other hand, in the case that the sensors were equipped in the plant growing area, radiation to the sensors caused measurement error, and resulted in disturbing control action. To remove the influence of radiation, two types of shelter shielding the sensors against radiation were developed for feedback detection and equipped at the center of plant growing area. These sensing systems were effective for feedback detection to control the ambient air in plant growing area and made it possible to expose plants exactly to desired environment.続きを見る
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Mendeley出力
KJ00004506703