基于PLC的精准变量施肥自动控制系统研究  

Design of auto-control for precision and variable fertilization based on PLC

作　　者：杨军 田敏[2] 陈剑[2] 吕新[2] 

机构地区：[1]石河子市政府,新疆石河子832000 [2]石河子大学绿洲生态重点实验室,新疆石河子832000

出　　处：《无线互联科技》2016年第14期50-53,共4页Wireless Internet Technology

基　　金：国家高技术研究发展计划(863计划)资助项目;项目编号:2012AA101902;"十二"五国家科技支撑计划资助项目;项目编号:2012BAD41B02;国家自然科学基金项目;项目编号:61465011

摘　　要：针对国内施肥的精准度低、均匀性差、有效利用率低、环境污染等问题,文章设计了一套滴灌农田精准变量施肥自动控制系统。该系统采用变量施肥方式,通过PLC控制器来采集压力、流量、电机转速等信息,通过控制配肥电机、活塞和电磁阀改变系统实际施肥量,实现自动配比调节和变量施肥。试验分析表明,该系统具有良好的控制精度,性能稳定可靠,可满足农田精准施肥的需求,实用性好。In view of the low precision, poor uniformity, low effective utilization and environmental pollution, a set of auto-control system for precision and variable fertilization applied in drip irrigation field is designed. The system, using variable rate fertilization way, through the PLC controller to collect the information of pressure, flow, motor speed etc, through the control with fat motor, the piston and the solenoid valve to change system practical amount of fertilization, realizes automatic proportioning and variable rate fertilization. The analysis of experimental shows that the system has good control precision, stable and reliable performance and it can meet the demand of precision fertilization of farmland so it is good in practicability.

关 键 词：自动控制 变量施肥 施肥装置 

分 类 号：S224.2[农业科学—农业机械化工程] TP273[农业科学—农业工程]