Determining the leaf emissivity of three crops by infrared thermometry.
Determining the leaf emissivity of three crops by infrared thermometry.
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通过红外温度测定三种农作物的叶片发射率。
DOI：
10.3390/s150511387
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发表时间：
2015-05-15
期刊：
影响因子：
--
通讯作者：
Chen C
中科院分区：
文献类型：
--
作者：
Chen C
植物温度可以为作物管理提供重要的生理信息。红外线温度计的非接触式测量对于检测叶片温度是有用的。在这项研究中，开发了一种新的技术来测量叶片发射率使用红外温度计与红外传感器和热电偶丝。通过校准方程将测量值转换为真实温度，以提高测量精度。推导了两种测量温度与安装发射率之间的关系，作为计算真发射率的模型。利用建立的数学方程计算了三种作物叶片的比辐射率。蝴蝶兰成熟叶、新叶、兜兰和马拉巴栗叶的平均比辐射率分别为0.9809、0.9783、0.981和0.9848。马拉巴尔板栗和两种兰花叶片间的雌激素水平差异显著。在这项研究中确定的发射率的范围是类似的文献。测量的精度是可接受的。本研究开发的方法是一种实时、原位的技术，可用于农业和林业植物。
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 Phalaenopsis mature and new leaves and Paphiopedilum and Malabar chestnut leaves, respectively. Emissivity differed significantly between leaves of Malabar chestnut and the two orchids. The range of emissivities determined in this study was similar to that in the literature. The precision of the measurement is acceptable. The method developed in this study is a real-time, in situ technique and could be used for agricultural and forestry plants.
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影响因子：
3.9
作者：
Chung, Wenbin;Chen, Chiachung
通讯作者：
Chen, Chiachung
影响因子：
2.4
作者：
Van Alstyne, Kathryn L.;Olson, Theresa K.
通讯作者：
Olson, Theresa K.
影响因子：
2.1
作者：
FUCHS, M;TANNER, CB
通讯作者：
TANNER, CB
影响因子：
6.7
作者：
Durigon, Angelica;van Lier, Quirijn de Jong
通讯作者：
van Lier, Quirijn de Jong
DOI：
10.3390/s131217084
发表时间：
2013-12-12
期刊：
Sensors (Basel, Switzerland)
影响因子：
--
作者：
Chen A;Chen C
通讯作者：
Chen C