摘要
该文介绍一种自制的实现精确农业自动变量施肥作业的变量施肥系统。该系统基于 DGPS卫星定位原理 ,将 GPS、GIS与 DDS相结合 ,进行施肥作业决策 ,决策的施肥数据写在 IC卡上。当施肥机在田间工作时 ,通过装备在施肥机上的 GPS接收的位置数据触发存储在 IC卡的施肥决策指令 ,用该指令通过单片机去控制施肥机上的排肥轴的转速 ,实现精确农业自动变量施肥作业。田间试验表明 ,该系统能够实现精确农业意义上的变量施肥作业。
In this paper, a prototype of a variable rate fertilizer applicator for precision agriculture was constructed. The applicator is based on DGPS satellite positioning principle. It combines GPS, GIS and DDG together to make fertilization decisions and to output the application rate of fertilization into an IC card. When the applicator works in the field, the position data received by GPS, which is equipped on the applicator, stimulates the fertilization decision command in the IC card. The command then controls the rotational velocity of the fertilizer shaft through a single chip computer to realize the variable rate fertilization. Experiment results in the field show that the fertilizer applicator is competent for variable rate fertilization for precision agriculture.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2003年第1期129-131,共3页
Transactions of the Chinese Society of Agricultural Engineering
基金
吉林省科委项目 (2 0 0 0 0 2 0 1 - 3- 1 )
