Greenhouse Environment Monitoring and Automatic Control System Based on Dew Condensation Prevention

Dew condensation on the leaf surface of greenhouse crops causes diseases by fungus, and thus badly affecting the growth of the crops. In this paper, we present a WSN based automatic control system to prevent dew condensation in the greenhouse environments. The system is composed of sensor nodes for collecting data, base nodes for processing collected data, relay nodes for adjusting the environment inside a greenhouse and an environment server for storage and processing of collected data. Using the Barenbrug formula for calculating the dew point on the leaves, this system is realized to prevent a dew condensation phenomenon on the crop's surface acting as an important element in diseases generation. We also constructed a test bed the usual greenhouse in order to verify the performance of our system with regard to dew condensation control.