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Greenhouse intelligent control method

An intelligent control and greenhouse technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of poor fruit taste, waste of electric energy, etc., and achieve good results and energy saving effects

Inactive Publication Date: 2008-12-03
SHANGHAI DIANJI UNIV
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  • Abstract
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Problems solved by technology

[0003] Therefore, the existing greenhouse control system has the disadvantages of artificially accelerating the ripening of crops, and the taste of the fruit produced is not good; maintaining a constant temperature in the greenhouse wastes a lot of electric energy.

Method used

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Experimental program
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Embodiment

[0042]In order to verify the effect of the present invention, a simulation experiment was carried out by using MATLAB software programming. Performing simulations requires knowledge of a model of the system, and models of greenhouse systems are difficult to create. The neural network can realize the approximation of any nonlinear function. The mature BP network is used to identify the greenhouse system, and the chaotic signal is added before the input, so that the greenhouse system is closer to the natural environment. Fuzzy control simulation such as image 3 , only the simulation effect of temperature is listed here.

[0043] The picture shows the temperature curve required for a certain day in tomato growth, the dotted line represents the actual temperature curve of a certain place and a certain day called out from the database, and the solid line is the actual simulation result (the initial temperature of the greenhouse is assumed to be 20 degrees). The optimum temperatu...

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Abstract

A greenhouse intelligent control method is realized by taking a plant intelligent databank as a base to control the integral climate of the greenhouse, additionally by tracing the timely information of plant growing period to correct and enhance the databank and superposing chaos signals into the input signal for controlling the greenhouse climate and also adopting a nerve network controller for optimal regulation. The invention has the advantages that: 1. the method is green and environment-friendly, because the intelligent control technique is adopted to generate the green natural ecological environment with a chaos-phenomenon which further approaches the nature changing and is good for the optimal growth of plants; 2. the method can conserve energy, because the traditional greenhouse control system without chaos changing is changed so as to conserve a large quantity of energy used for keeping constant-temperature in the greenhouse. The invention puts forward a novel greenhouse intelligent control system simulating the natural environment on the basis of taking the greenhouse plant growth environment as a background, with excellent effect, practical application and popularization value.

Description

technical field [0001] The invention relates to the technical field of intelligent control, in particular to an intelligent control method used in a greenhouse. Background technique [0002] In recent decades, the greenhouse has broken through the limitations of traditional crop planting by geographical, natural environment, climate and other factors, and has become a new crop planting technology, which is of great significance to agriculture. However, although the vegetables and fruits matured in the greenhouse can be listed in advance or out of season, their quality is not as good as those grown and matured in the natural environment. The main reason is that the chemical and biological environment of crop growth (such as soil quality, water quality, etc.) is not more suitable than the natural environment, and the second is that the temperature in the greenhouse is artificially controlled at a constant temperature suitable for crop growth, which excessively accelerates the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/02
Inventor 蒋建军项湜伍
Owner SHANGHAI DIANJI UNIV
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