| 基于光谱学原理的无损式作物冠层分析仪 |
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| 引用本文： | 李修华,李民赞,崔笛.基于光谱学原理的无损式作物冠层分析仪[J].农业机械学报,2009,40(Z1):252-255. |
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| 作者姓名： | 李修华 李民赞 崔笛 |
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| 作者单位： | 中国农业大学现代精细农业系统集成研究教育部重点实验室,北京,100083 |
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| 基金项目： | "十一五"国家科技支撑计划资助项目，国家"863"高技术研究发展计划资助项目 |
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| 摘 要： | 设计了可以对作物氮含量进行实时监测的作物冠层分析仪.分析仪由传感器与控制器组成,通过无线方式进行数据传输.传感器包含光学部分和电路部分,光学部分包含4个光学通道和光电探测器,其中2个通道分别在610nm与1220nm处测量太阳辐射光,而另外2个通道在同样的2个波段上测量作物冠层的反射光;电路部分主要由电源、放大单元和无线传输模块组成.控制器内除了无线传输模块外,周边还集成了键盘、液晶显示、数据存储和上传等功能模块.详细阐述了仪器的硬件设计和软件设计.标定实验显示光学部分工作稳定,无线传输性能好.与Quality Spec高光谱仪进行的田间对比实验也取得了较好的效果,相关系数达到0.52.
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| 关 键 词： | 作物冠层 氮含量 分析仪 光谱学 |
Non-Canopy Analyzer Based on Spectral Principle |
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| Li Xiuhua Li Minzan Cui Di.Non-Canopy Analyzer Based on Spectral Principle[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(Z1):252-255. |
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| Authors: | Li Xiuhua Li Minzan Cui Di |
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| Institution: | Key Laboratory of Modern Precision Agriculture System Integration Research;Ministry of Education;China Agricultural University;Beijing 100083;China |
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| Abstract: | In order to real-time detect the plant nitrogen content,a non-destructive crop growth analyzer is developed.It is made up of a sensor and a controller.The optical part of the sensor is made up of four optical channels and four photodiodes.Two channels receive the sunlight and the other two receive the reflected light from the crop canopy at the wavebands of 610 nm and 1 220 nm.The circuit part of the sensor is made up of power supply unit,amplifying unit and a wireless module.The controller has functions su... |
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| Keywords: | Crop canopy Nitrogen content Analyzer Spectral principle |
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