Design and Implementation of Intelligent Temperature and Humidity Control System for Small and Medium Grain Depots

The system detects the temperature and humidity in the grain depot in real time through the DHT11 temperature and humidity sensor, and sends the collected temperature and humidity to the SCM through the serial bus, and the SCM displays the temperature and humidity through the LCD display circuit. The sensor internal temperature and humidity for the upper and lower limit set, if equal to the upper or lower limit set value, alarm circuit will produce high or low temperature alarm, relay drive motor fan rotation, thereby reducing the temperature and humidity in the grain depot. The experimental results show that the designed system has high detection accuracy and data transmission performance.