摘要
为提高温室大棚种植效率、减少管理成本,设计了智能控制系统,用于对大棚内温度、土壤湿度、光照等环境因素进行控制。该系统以LabVIEW作为主控软件,结合相关的器件和外围电路,使种植户在计算机上远程监控大棚内农作物的生长情况,并采用比例积分微分(PID)控制算法,实现对温室大棚内的温度值、湿度值、光强值的有效自动控制。在系统的前面板上输入农作物种类和生长阶段,系统自动生成此时最适合该农作物生长的湿度、温度、光照参数值,从而保证大棚内的温度、湿度、光照被控制在合适的范围内。同时,在前面板上设置了自动/手动切换控制按钮,保证系统能够在自动或者手动控制下工作。系统在试验室条件下进行了验证,参数误差最大为8.7%,效果不理想。但对控制精度要求不高的温室大棚、冷链物流、养殖业等领域,该系统仍具有一定的借鉴意义。
In order to improve the efficiency of greenhouse cultivation and reduce management costs,an intelligent control system is designed to control the temperature,the soil moisture,the light intensity and other environmental factors in the greenhouse.The system allows the growers to monilor ihe crop growth in the greenhouse environments remotely on the computer and adopts proportional integral differential(PID)algorithm to realize the automatic and effective control for the temperature,the soil moisture,the light intensity in the greenhouse based on LabVIEW software and associated devices&peripheral circuits.When the crop species and the corresponding growing stages are typed in the front panel,the system will automatically generate the most suitable parameters such as soil moisture,temperature and light intensity so that the soil moisture,the temperature and the light intensity in the greenhouse will be controlled in the suitable range.And the autoraatic/manual buttons were set on the front panel by the system in order to make the system in the automatic/manual control.It was demonstrated in the laboratory condition.The results showed that the maximum error of the parameter is 8.7% and the effect is not ideal.But for the areas such as the greenhouse,cold chain logistics,aquaculture and so on with low control accuracy requirement,it still has certain reference significance.
作者
刘玉芹
徐海华
LIU Yuqin;XU Haihua(School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China;School of Software,Shandong University,Jinan 250101,China)
出处
《自动化仪表》
CAS
2021年第1期86-89,共4页
Process Automation Instrumentation
