农业大棚水源热泵控制系统的设计与实现
丁红1 费玄2刘良涛1常新华1
(1鲁东大学 信息与电气工程学院 烟台 264025,2 北京理工大学自动化学院 北京 100081)
关键词：水源热泵；PLC；触摸屏；远程控制
中文分类号：TP273 文献标识码：A
摘要：针对农业大棚，设计了基于PLC和MCGS组态软件的水源热泵自动控制系统，下位机采用西门子S7-200 PLC，并带有触摸屏，自动控制农业大棚的温度、湿度、CO2浓度、光照强度,上位机用485总线和Modbus通信协议对多个大棚的温度、湿度、CO2浓度、光照强度和热泵机组运行参数进行远程监控，并以图形显示、实时曲线、历史曲线、报警处理和报表输出等多种方式呈现给用户，通过设定参数，使大棚环境适合不同农作物的生长。
Design and Implementation of Agricultural GreenhouseWater Source Heat Pump System
DINGHong1 , FEI Xuan2，LIU Liang Tao 1,CHANG Xin-hua1
（1 School of Information andElectrical Engineering,Ludong University,Yantai 264025,China，
2 Collegeof Automation ,Beijing Institute of Technology,Beijing 100081,China）
Key words:water source heat pump;PLC; touch screen ; remote control
Abstract: Anautomatic control system of water source heat pump was designed based on PLCand MCGS configuration software for agricultural greenhouse. The lower computerof the designed system employs SIEMENS S7-200 PLC with touch screen to controltemperature, humidity, concentrations of CO2, and illuminationintensity. 485 bus and modbus communication protocol were utilized to remotely monitortemperature, humidity, CO2 concentrations, illumination intensityand operating parameters of heat pump units of a variety of greenhouses. The monitoringresults are presented to users in many ways consisting of animation, graphicaldisplay, real-time curves, history curves, alarm processing, report output, andetc..