大豆叶面肥实时变量喷施控制系统设计与试验
Design and Experiment of Real-time Variable Spraying Control of Soybean Foliar Fertilizer
辛项玉 1王熙1
作者信息
- 1. 黑龙江八一农垦大学 工程学院,黑龙江 大庆 163319
- 折叠
摘要
针对当前大豆叶面肥喷施控制精度低、喷施效果差、肥料利用率低等问题,设计了一种大豆叶面肥实时变量喷施控制系统,主要包括光谱传感器、专用控制器、控制系统和多种反馈信号传感器.专用控制器以微控制单元为核心,通过增量式PID算法根据反馈信息处理工作调节变量喷施控制系统,搭建室内台架试验,验证调压比例阀在 0.2～0.4 MPa范围内,流量增加了约 2 倍.通过室外试验采集数据做出喷雾机压力响应时间曲线,验证悬挂喷雾机搭配变量喷施控制系统可实现对压力实时调控,满足实时变量喷施控制系统的调节时间.研究结果可为大豆叶面肥变量喷施控制系统的研发提供理论基础.
Abstract
Aiming at the problems of low control precision,poor spraying effect and low fertilizer utilization rate of soybean leaf fertilizer,a real-time variable spraying control system for soybean leaf fertilizer was designed.Mainly included spec-trum sensor,special controller,control system,a variety of feedback signal sensor.The mobile controller taked the micro-control unit as the core,and adjusted the variable spraying control system according to the feedback information processing by incremental PID algorithm.The indoor bench test was builted to verify that the pressure regulating propor-tional valve increases the flow rate by about 2 times within the range of 0.2-0.4 MPa.Through the outdoor test,the pres-sure response time curve of the sprayer was obtained by collecting data,and it was verified that the hanging sprayer with variable spraying control system could realize real-time control of pressure and meet the adjustment time of the real-time variable spraying control system.The results can provide a theoretical basis for the development of variable spraying con-trol of soybean leaf facial fertilizer.
关键词
大豆叶面肥/变量喷施/PID控制/调压比例阀Key words
soybean leaf flour fertilizer/variable spraying/PID control/pressure regulating proportional valve引用本文复制引用
出版年
2025
国家科技期刊平台
NSTL
万方数据