An intelligent temperature/humidity control system was designed for vegetable greenhouses based on computer automatic control. The design thought of the system softwares and hardwares such as temperature/humidity acquisition system, temperature/humidity display, control system and heater control circuit are expoundcd. Taking DS18820 and HM1500LF as the temperature/humidity sensors , single chip microcomputer AT89S52 as a core of the system , the simulation of the system was performed with DELPHI software. The result shows that the intelligent temperature/humidity control system designed in the research has good human-computer interface, simple and convenient operation, high automation degree,low cost and good application foreground.%针对研究蔬菜大棚智能温湿度控制,设计了一种基于计算机自动控制的智能蔬菜大棚温湿度控制系统.详细阐述了该系统的温湿度采集、温湿度显示、控制系统等系统软硬件的设计思想,以DSl8820和HMl500LF作为温湿度传感器,以AT89S52单片机为系统核心,最后利用DELPHI软件进行系统仿真.该研究设计的蔬菜大棚智能温湿度控制系统人机界面良好,操作简单方便,自动化程度高,造价低廉,具有良好的应用前景和推广价值.
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