Simulation of software control of a pumping unit in an industrial greenhouse

Automation of technological operations and processes based on digital software systems in the production structural units of agricultural enterprises is an essential condition for ensuring their efficiency and competitiveness of enterprises as a whole. For example, automatic irrigation control in industrial greenhouses contributes to the creation of optimal conditions for plant development, the cultivation of healthy, full-fledged fruits, increasing yields and acts as a guarantee of the presentation and quality of products. In this regard, the creation of local digital systems for software automatic control of pumping units in industrial greenhouses, which contribute to reducing power consumption and improving their energy efficiency indicators, is an urgent task. The paper considers the virtual PLC models of the pumping unit control system, presents their logical functional block diagrams implemented in the CoDeSys environment in the language of standard functional blocks. The emulation of models is graphically illustrated by a diagram of the pressure dependence in the pressure line in the function of water flow; the operability of the proposed virtual models of the developed software system for automatic irrigation control in the greenhouse is confirmed. The possibility of integrating a local PLC of the automatic control system with automated intelligent information and control systems of the facility is indicated.