A Network Adaptive Control System for Greenhouses in Facility Agriculture

Abstract

The invention provides a network-based self-adaptive control system for greenhouses of facility agriculture, which adopts a star network control structure with an upper computer in combination with a plurality of sets of lower computers, the upper computer serves as a central monitoring master station, each lower computer serves as a field control substation, and the upper computer communicates with each lower computer; the upper computer comprises a personal computer, in which configuration software and management decision-making software are installed, each lower computer comprises a human-computer interaction interface, a PLC (programmable logic controller), an execution mechanism thereof and a parameter monitoring device, the human-computer interaction interface communicates with the PLC, and the environmental information detected by the parameter monitoring device is uploaded to the PLC via an analog-to-digital conversion module and processed. The network-based self-adaptive control system is applicable to single greenhouses or multi-span greenhouses, and with information acquisition and storage, automated control, data processing and network transmission as signs, the network-based self-adaptive control system has high control precision, high stability and a simple structure, is convenient to install, can effectively improve the greenhouse management mode and increase labor productivity, and realizes the unified scheduling, configuration and management of greenhouses.

Description

technical field [0001] The invention relates to the field of greenhouse control systems, in particular to a facility agricultural greenhouse network-type self-adaptive control system that is applicable to multi-span greenhouses and can also be applied to single greenhouses. Background technique [0002] Greenhouse is an important part of facility agriculture. It is a modern agricultural production method that integrates the application of engineering equipment technology and environmental technology for crop production. It is one of the key points of agricultural development in my country. Greenhouses can bring considerable economic benefits, greatly improve land utilization, labor productivity and product output rate, and accelerate the transformation from traditional agriculture to modern agriculture. An important part of modern agricultural production is to detect and control some important parameters in the agricultural production environment, such as temperature, humidi...

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Problems solved by technology

[0003] At present, my country's greenhouse control system can be divided into two categories: manual control system and automatic control system. The manual control system has low labor productivity and high quality requirements for growers; the automatic control system can use modern methods to adjust the greenhouse environmental parameters to meet crop growth. demand, but at this stage, the automatic control method is still limited to the control of a single environmental parameter of the greenhouse or the control of the actuator, such as the drip irrigation control system, the shutter control system, etc. Digital adaptive control system integrated with control

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