Research and development on semi-automatic controller of variable rate fertilizer applicator
A new kind of semi-automatic controller of variable rate fertilizer applicator is designed base on the present situation of production. The users can input the anticipated fertilizer volume through the keyboard on the controller. The system can automatically control the hydraulic speed of the motor. And the fertilizer volume can increase in the process of working through push the increase arrow on the controller. The semi-automatic controller is driven by two high-quality intelligent chips. And one acts as a data controlling chip and controls those required data displaying real-timely on the liquid crystal display, the other one named as PWM controlling chip is planed to control signal from PMW and then response real-timely to those controlling signal coming from the former single chip. Such a semi-automatic controller can figure out running speeding of agricultural implements certainly including fertilizer applicator, and then the quantity of fertilizer can be resented real-timely in response to the variation of running speed. For instance, through use this controlling system, even under a special circumstance that is the distribution of fertility is not even in the field can also be cope with successfully by matching with a pre-subdivide plan to differentiate sub-fields according to different situation of fertility in the whole one. This paper introduces the structure and design of this semi-automatic controller in detail. In addition, we have examined the performance of this new product in the field by using different fertilizer and requirement. The results reveal that semi-automatic controller work well by controlling the quantity of fertilizer precisely. Specifically, coefficient of variation of fertilizing is controlled to be less than 3％. That means this new type semi-automatic controller worth developing in further.
Speed adjustment speed signal collection 51MCU variable rate fertilizer
Ji Jianbin Wang Xiu Mao yijin
National Engineering Research Center for Information Technology in Agriculture,Beijing 100097China National Engineering Research Center for Information Technology in Agriculture,Beijing 100097,China
国际会议
北京
英文
1-6
2009-10-14（万方平台首次上网日期，不代表论文的发表时间）