Temperature and Humidity Measurement System for Grain Storage Based on nRF905

A temperature and humidity measurement system for grain storage is developed. In the system, digital temperature and humidity sensors and single chip UHF transceiver were used. The system consists of the host controller used to manage extension device in each granary and the data transmission, and extension devices fixed in each granary were used to periodically measure temperature and humidity and transmit temperature and humidity data following instructions from host controller. Besides the advantage of simple structure, being easy to maintain and good measuring stability, the system characterized by wireless transmission of temperature and humidity sample data, which make it suitable for spread around grain storage.