：介绍了基于AT89C51单片机的温室大棚温湿度测控系统设计原理，主要电路设计及软件

设计等。该系统采用AT89C51单片机作为控制器，可对执行机构发出指令实现大棚温湿度参数调节，

具有上下位机直接设置温湿度范围，温湿度实时显示等功能。上位机采用Delphi软件进行编写，用

户界面友好，操作简单，可以根据大棚作物生长情况绘制成简明直观的作物生长走势图，从而容易得

出最适合作物生长的温湿度值。-: AT89C51 single-chip based on the introduction of greenhouse temperature and humidity measurement and control system design principles, the main circuit design and software design. The system uses AT89C51 single-chip microcomputer as the controller issued a directive to the executing agencies achieve greenhouse temperature and humidity parameters of adjustment, with upper and lower machine set directly the scope of temperature and humidity, temperature and humidity in real-time display functions. PC prepared using Delphi software, user-friendly, simple operation, according to the growth of greenhouse crops into a clear and simple visual rendering of the crop growth charts, so easy to come to the most suitable crop of temperature and humidity values.