4BQD-40型气力喷播机排种器自动控制系统的研究设计  

Study and Design on Automatic Control System for the Seed-metering Device of 4BQD-40 Pneumatic Sprying Seeding-machine

作　　者：王安亭[1] 高雄[1] 陈铁英 张兴华[1] 孙晓红[1] 

机构地区：[1]内蒙古农业大学机电工程学院,呼和浩特010018 [2]内蒙古农牧业机械技术推广站,呼和浩特010010

出　　处：《农机化研究》2013年第3期130-133,共4页Journal of Agricultural Mechanization Research

基　　金：内蒙古自治区自然科学基金项目(2011MS0717)

摘　　要：排种器在4BQD-40型气力喷播机工作过程中起着非常重要的作用,决定着喷播机喷播的质量。为此,对气力喷播机排种器进行了研究,设计出排种器自动控制系统。该控制系统以S7-200 CPU222 CN型PLC为控制核心,当霍尔开关传感器检测到转动的拖拉机后轮上的磁片时,发出数字开关信号,PLC接收到该信号后改变高速脉冲的周期,并输入到步进电机驱动器,从而控制步进电机带动排种器精确转动,实现了喷播机排种器的自动控制,提高了其工作性能和播种质量。The seed-metering device plays a very important role in the working process of 4BQD-40 Pneumatic Spraying seeding-machine. It determines the seeding quality of the machine. The article studied the seed-metering device of the pneumatic spraying seeding-machine, and designed an automatic control system for the seed-metering device. The core element of the control system is the S7-200 CPU222 CN type PLC. When the Hall switch sensor detects the floppy disks on the back wheel of the tractor, it will generate a digital switching signal. Then the PLC will change the cycle time of the high-speed pulse after received the signal, and input it into the driver of the stepper motor to control the accurate rotation of the seed-metering device. The control system realized the automatic control of the seed-metering device, and improved the work performance and planting quality.

关 键 词：气力喷播机 排种器 PLC 步进电机 

分 类 号：S223.24[农业科学—农业机械化工程]