Design of Granary Temperature and Humidity Measurement and Control System Based on SHT11

This paper achieved a measurement and control system for the granary temperature and humidity based on digital temperature and humidity sensor SHT11,MCU and PC.The AT89C51 MCU was used as the main component of the lower computer system,and the SHT11 was used as measurement unit.The wireless data transceiver APC200A-43 was used to communicate between lower computer and host computer.The host computer monitoring software was designed using C++ Builder,which can monitor many lower computers simul-taneously.