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Greenhouse control method based on CFD numerical simulation

A control method and numerical simulation technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of low efficiency and poor effect of PID parameters, and achieve the effect of high efficiency and accurate PID parameter tuning.

Inactive Publication Date: 2013-10-23
SHANGHAI YUANGEN INFORMATION TECH
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Problems solved by technology

[0003] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a greenhouse control method based on CFD numerical simulation, which is used to solve the problems of low efficiency and poor effect of PID parameter tuning in the prior art

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  • Greenhouse control method based on CFD numerical simulation
  • Greenhouse control method based on CFD numerical simulation
  • Greenhouse control method based on CFD numerical simulation

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Embodiment Construction

[0009] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0010] Please refer to attached picture. It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitra...

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Abstract

The invention provides a greenhouse control method based on CFD numerical simulation. The method includes the steps that a CAD model is established for a greenhouse; a boundary condition is set for the CAD model; a monitoring point is appointed in the CAD model, and a PID control parameter primary value is set for environment equipment in the CAD model; CFD is used for simulating and calculating an environment index numerical value of the monitoring point according to the boundary condition and the PID control parameter primary value; PID control parameters are regulated to enable the environment index numerical value of the monitoring point to reach a target value; the greenhouse is controlled according to the regulated PID. Thus, according to the greenhouse control method based on the CFD numerical simulation, the PID parameter setting is simulated and achieved through calculating, and efficiency is high. According to a preferred implementing method, the PID parameter setting of the greenhouse is more accurate, an engineer does not need to go to the greenhouse, or the PID control parameters of the greenhouse can be determined when the greenhouse is at the design stage, and the greenhouse is controlled according to the determined PID control parameters.

Description

technical field [0001] The invention relates to the technical field of modern greenhouse automatic control, in particular to a greenhouse control method based on CFD numerical simulation. Background technique [0002] With the rapid development of modern urban agriculture in my country, smart greenhouses have been more and more widely used due to their high efficiency, high yield and easy management. For the automatic control of smart greenhouses, more than 95% of smart greenhouses still use the proportional-integral-derivative (Proportion Integration Differentiation, PID) control method. PID control has been widely used in industrial control. However, compared with the relative stability of industrial production conditions, the influencing factors of greenhouses are more complex and variable. Various factors such as different regional climates, seasons, greenhouse structure shapes, and differences and layouts of internal environmental control equipment will greatly affect...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
Inventor 冯林
Owner SHANGHAI YUANGEN INFORMATION TECH
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