Modular architecture of an automated process control system in greenhouse complexes

Abstract

This paper proposes a three-level modular architecture of an automated process control system for a modern greenhouse complex that uses the CAN bus as an interface. The lower level contains sensors, actuators, edge analog interfaces. The intermediate level contains input and output modules, data collection, control units. The upper level is the SCADA system, a personal computer on which a server is deployed, which receives and aggregates information from logic and data collection modules and provides the user with a graphical interface for monitoring and controlling the process. The architecture is characterized by scalability, modularity, and coverage of all technological processes of modern greenhouse cultivation. The block diagram for the architecture is provided. As an automation object, we consider a greenhouse for vertical cultivation of microgreens using low-pressure aeroponics technology. The experiments show the ability of a system based on such architecture to meet the time criteria of technological processes and interaction with users. Further work consists in developing a specification for the described modules, formulating requirements for them, performing the design, development, manufacturing and testing.