精准施肥自动控制系统的设计  

The Design for Precise Fertilization Automatic Control System

作　　者：赵丽清[1] 

机构地区：[1]青岛农业大学机电工程学院,山东青岛266109

出　　处：《农机化研究》2009年第10期93-96,共4页Journal of Agricultural Mechanization Research

摘　　要：以华邦公司的W77E58型单片机为控制核心,选用美国生产的SPAD-502叶绿素仪,测定作物当前生长期的氮含量,通过GPS测定当前地块的位置,结合GIS的当前地块当前生长期氮含量数据,实时计算出差值,给出当前地块所需施的氮肥量,通过PC机将数据传送到单片机,利用步进电机的细分技术均匀施肥。该控制系统能够实现以lm2的尺度进行变量控制施肥。首次使用叶绿素测定仪检测作物中氮元素的含量,在很大程度上解决了过去土壤检测实效性差的问题。We use Winbond＇s W77E58 SCM as the control core,use the SPAD-502 chlorophyll meter determination of crop nitrogen content of the current growing season,we measured the location of the current block through GPS,combined with the current growing season nitrogen content data in the current block,real-time calculate dispersion,given the current measures of nitrogen fertilizer required to block.The amount of data will be sent to the local microcontroller through the PC,a breakdown of the use of stepper motor technology uniform fertilization.The control system can achieve the scale to 1m2 for variable control fertilization.In this design we use the chlorophyll meter to detect nitrogen content data in the soil,improving the timeliness in Soil testing to a large degree.

关 键 词：精准施肥 W77E58 步进电机 细分技术 

分 类 号：S126[农业科学—农业基础科学]