摘要
设计了一种由F2812DSP芯片、PS2键盘和光电传感器组成的基于数字信号处理(DSP)的磁吸式播种器滚筒变速控制系统,在充种区降低滚筒转速增加充种时间,在携种和清种区增加滚筒转速,提高播种器工作效率。以油菜包衣种子为研究对象的试验表明,该控制系统各个模块协调工作良好,系统运行稳定,滚筒在充种时转速为16 r/min,携种、清种时转速为20 r/min,工作效率较16 r/min匀速转动提高了16%,单播率达到95%。
The ratio of the single seedings,which is effected by the coefficient of the absorbing seeds directly,is an important parameter.The purpose of this paper is to design the variable control system for precision magnetic drum-seeder.In order to enhance the sowing efficiency,the roller is made speed-down when it is absorbing seeds,whereas it is made speed-up when it has absorbed or is sowing seeds.The variable control system embodies a F2812DSP controller,a PS2 keyboard and a photoelectricity sensor.Experiment shows that the efficiency has been raised by 16% and the ratio of single seedings is over 95%,when the speed of absorbing seeds is up to 16 r/min and the speed of absorbed and sowing seeds is up to 20 r/min.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2009年第S1期45-47,32,共4页
Transactions of the Chinese Society for Agricultural Machinery
基金
"十一五"国家科技支撑计划资助项目(2006BAD11A10)
江苏省自然科学基金资助项目(BK2007088)
江苏大学现代农业装备和技术省重点实验室开放基金项目(NZ200604)
关键词
磁吸式播种器滚筒
变速控制
单播率
数字信号处理
光电传感器
Magnetic drum-seeder,Variable speed control system,Ratio of single seedings,DSP,Photoelectricity sensor
