基于单片机的温室大棚环境监控系统设计

Design of greenhouse Environment Monitoring system based on single Chip Microcomputer

针对目前温室大棚环境监控系统调节控制不集中、温湿度控制精度不足、自动化水平有限的问题。系统采用AT89C51单片机以及AM2301温湿度传感器构成下位机单元,在对温湿度数据实时采集的同时,通过RS-485通信接口将数据传输至PC机的人机交互系统界面进行集中式监控。通过温湿度传感器准确地将温湿度参数测量出来,并将数据记录储存下来。通过与预设的参数值进行对比,当检测到的温湿度参数超过预先设定的范围时,系统发出报警警报。用户可以在上位机界面设置温度、湿度的上下限,系统自动将预设值写入AM2301温湿度传感器中,以此来达到监控的目的。

The current greenhouse environment monitoring system is not centralized, temperature and humidity control accuracy isinsufficient, automation level is limited. The system adopts AT89C51 single chip computer and AM2301 temperature and humiditysensor to constitute the lower computer unit. While collecting the temperature and humidity data in real time, the data is transmit-ted to the interface of the man-machine interaction system of PC computer through RS-485 communication interface for central-ized monitoring. The temperature and humidity parameters are accurately measured by the temperature and humidity sensor, andthe data are recorded and stored. By comparing with the preset parameters, the system gives an alarm when the temperature and hu-midity parameters are higher than the preset range. The user can set the upper and lower limits of temperature and humidity in theupper computer interface, and the system automatically writes the preset value into the AM2301 temperature and humidity sensorto achieve the purpose of monitoring.