Due to the increasing need for remote control, we used a Raspberry Pi 4 computer as part of the thesis to develop a system that allows remote control of the greenhouse ventilation. The central part of the system is a computer with software that takes care of the automation, reads the sensor values and controls the relay module. The SQLite database was used to store the measurement data. The system also allows the automatic control of the greenhouse sides according to the current sensor readings and optimal conditions settings. The user can view the current conditions remotely through the user interface and can also control the sides manually. A user panel is available for local control. The prototype ventilation control system includes all the existing greenhouse ventilation control system features, redesigned with newer technologies. We have also added the possibility of remote control, which is particularly useful. The system has been in use for some time, and we are very satisfied with its performance.
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