Design of Temperature and Humidity Monitoring System for Agriculture Greenhouse

In order to improve automation degree and production efficiency of agriculture greenhouse,the temperature and humidity monitoring system for agriculture canopy were designed.This system took AT89S52 single chip as control core,and a temperature humidity sensor with high quality was used to realize the measurement and control of temperature and humidity of agriculture greenhouse automatically.Moreover,the upper and lower limit of ambient temperature and humidity can be set by keys according to different crops.An audible alarm was touched off and output electric relays were powered to control the adjustment of temperature humidity by executive devices when the temperature and humidity parameters were out of the threshold.The system software was designed by using C language and the block-based design was realized.With high detection accuracy and operation reliability,the system was easy to use by operators.