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.
.[J].Transactions of the Chinese Society for Agricultural Machinery,2007,38(11):84-87.
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基于PLC的变量施肥控制系统设计与试验   [下载全文]
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DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]
中文关键词:  变量施肥  可编程控制器  归一化植被差异指数
基金项目:
邵利敏  王秀  牛晓颖  钱东平
河北农业大学
中文摘要: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。
Key Words:
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.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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