基于STC单片机的种苗催芽室温湿度监控系统设计

Design of Seed Germination Temperature and Humidity Monitoring System Based on STC Microcomputer

针对种苗催芽室温湿度控制现状,设计并实现了一个基于单片机技术的温湿度控制器。该系统以STC89 C52单片机为控制中心,采用高精度数字式传感器DHT11作为温湿度检测元件,将采集到的温湿度信号传送给单片机;单片机处理传感器的测量数据,通过LCD 1602实时显示温湿度的数值;当实时监测到的温湿度值超出设定的温湿度变化范围时,单片机输出信号启动相应的加温、降温、加湿和除湿装置实现自动控制,并且报警电路进行声光报警。该温湿度控制系统具有控制精度高、性价比高及易于管理等优点。

In view of the present situation of the temperature and humidity control seed germination , a temperature hu-midity controller is designed and implemented based on single chip technology .The system uses STC89C52 microcomput-er as the control center , adopting high precision digital temperature and humidity sensor DHT 11 as the detecting element , and the collected temperature and humidity signal is transmitted to the single chip microcomputer .The microcomputer deals with the sensor measured data through the numerical LCD 1602 displaying real-time temperature and humidity;When the real-time detected temperature and humidity are beyond the permitted range , the microcomputer outputs signal to start the heating , cooling , humidifying and dehumidifying device to realize automatic control , and the alarm circuit works with sound and light .The temperature and humidity control system is easy to manage with high control precision and high performance price ratio .