一种新型实用温室温度控制系统设计

目前国内温室环境测控系统主要应用于大型现代化温室,而在普通农户中难以推广.研究利用分布式结构和多CPU设计思想,设计一个实用小型温室温度控制系统,系统由主机、从机和强电控制组成.从机是温室参数采集系统,它由ATmega16单片机、单总线数字温度传感器DS18B20组成,完成温度的采集功能;主机由RS-485接口与从机进行通讯,为用户提供良好的控制界面,方便进行人机交流,实现对温室温度的远距离测控、显示、存储等综合管理.整个系统成本较低,适合普通农户使用.

Abstract：

At present,the conventional temperature measuring and controlling systems are mainly utilized in large modernized greenhouses in China and are,therefore,difficult to be popularized in the greenhouses of farmer households.In this study,based on a designing idea of multilevel distributed frame and multiCPU,a practical miniature temperature measuring and controlling system is developed,which is composed of a host computer,a slave computer and an intense current controller.The slave computer,composed of an ATmegal6 chip microcomputer and al-wire digital temperature senor DS18B20,is used as a gathering system to collect the greenhouse temperature parameters.The host computer,communicating with the slave computer by RS-485 interface,is used to communicate with man by friendly interactive graphics,and to comprehensively manage the greenhouse environmental parameters of controlling,displaying and storing,and to display the operational states of greenhouses.Owing to its low cost,this system is expected to be popularized successfully in the greenhouses of farmer households.

A New Design of Practical Small-Scale Greenhouse Temperature Control System