Sensors | |
Determining the Leaf Emissivity of Three Crops by Infrared Thermometry | |
Chiachung Chen1  | |
[1] Department of Bio-industrial Mechatronics Engineering, National ChungHsing University, 250 Kuokuang Road, Taichung 40227, Taiwan; E-Mail | |
关键词:
infrared thermometer;
leaf emissivity;
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DOI : 10.3390/s150511387 | |
来源: mdpi | |
【 摘 要 】
Plant temperature can provide important physiological information for crop management. Non-contact measurement with an infrared thermometer is useful for detecting leaf temperatures. In this study, a novel technique was developed to measure leaf emissivity using an infrared thermometer with an infrared sensor and a thermocouple wire. The measured values were transformed into true temperatures by calibration equations to improve the measurement accuracy. The relationship between two kinds of measurement temperatures and setting emissivities was derived as a model for calculating of true emissivity. The emissivities of leaves of three crops were calculated by the mathematical equation developed in this study. The mean emissivities were 0.9809, 0.9783, 0.981 and 0.9848 for
【 授权许可】
CC BY
© 2015 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
Files | Size | Format | View |
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RO202003190012589ZK.pdf | 736KB | download |