Model of process control system in greenhouse agro-industrial complex

Abstract

The model of an automated control system for microclimatic indicators and energy consumption of greenhouses has been developed. To design intelligent components and on their basis to synthesize adaptive computer systems for managing the microclimate and energy efficiency of greenhouses is an urgent problem. The purpose of the work is to analyze greenhouse management modes, to make comparative characteristic of the process automation systems, to develop an information scheme of greenhouse-environment interaction, as well as, a structural scheme of greenhouse microclimate control, to select modern technologies to implement automatic climate control systems and to analyze the capabilities of the developed control model of a technological process. The research methods are based on the basic principles of the theory of heat and mass transfer using modern elements of computerized control. The structure of the greenhouse microclimate control system with a variable composition of equipment that provides rapid adaptation to the management requirements of a particular greenhouse has been developed. It has been proposed to develop the components and the structure of a greenhouse microclimate control system with implementation of the comprehensive approach, which includes communication and information management systems and technologies, a modern element base, the Android software, decision support tools. This approach is based on the following principles: consistency, variability of the equipment composition, openness, modularity, and usage of a set of basic design solutions. The microcontroller is the central control device of the entire control system. An availability graph of the client-server communication for the greenhouse microclimate control system, which has two final states, has been developed.