| 基于PLC的变量施肥控制系统设计与试验 |
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| 引用本文： | 邵利敏,王秀,牛晓颖,钱东平.基于PLC的变量施肥控制系统设计与试验[J].农业机械学报,2007,38(11):84-87. |
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| 作者姓名： | 邵利敏 王秀 牛晓颖 钱东平 |
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| 作者单位： | 1. 河北农业大学机电工程学院,071001,保定市
2. 国家农业信息化工程技术研究中心,100089,北京市 |
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| 基金项目： | 北京市农业科技合作资助项目;国家高技术研究发展计划(863计划) |
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| 摘 要： | 提出了一个以PLC为主机,集成光学传感器和控制装置的变量施肥控制系统。根据实时监测的作物光谱信息和施肥机具的实际前进速度调节施肥量。系统采用无损测试技术和模糊控制算法,通过归一化植被差异指数测量仪实时获取归一化植被差异指数,结合施肥机具行进速度调节执行机构中的电磁阀,实现实时变量施肥。
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| 关 键 词： | 变量施肥 可编程控制器 归一化植被差异指数 |
| 收稿时间： | 2006-04-18 |
| 修稿时间： | 2006年4月18日 |
Design and Experiment on PLC Control System of Variable Rate Fertilizer |
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| Shao Limin,Wang Xiu,Niu Xiaoying,Qian Dongping.Design and Experiment on PLC Control System of Variable Rate Fertilizer[J].Transactions of the Chinese Society of Agricultural Machinery,2007,38(11):84-87. |
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| Authors: | Shao Limin Wang Xiu Niu Xiaoying Qian Dongping |
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| Affiliation: | 1.Agriculture University of Hebei2.National Engineering Research Center for Information Technology in Agriculture |
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| Abstract: | A real-time control system of the automatic variable rate fertilizer applicator was presented. The control system takes PLC as the mainframe, and integrates with the optical sensor and automatic control equipment. The quantity of fertilizer was adjusted with the tractor speed and the crop spectrum data by real-time measuring. The technology of non-destructive test and the fuzzy control algorithm was adopted in the system. According to the speed of the tractor and the real-time value of NDVI (normalized difference vegetative index) from NDVI equipment, the real time variable rate fertilizer was realized via opening or closing the electromagnetic valves of the system. |
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| Keywords: | Variable rate fertilizer PLC Normalized difference vegetative index |
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