Greenhouse water-fertilizer integrated nutrient solution automatic irrigation control method based on LabVIEW

Abstract

The invention discloses a greenhouse water-fertilizer integrated nutrient solution automatic irrigation control method based on LabVIEW. The method comprises the following steps that all parameters are set in a LabVIEW standard value setting interface through a computer in which a LabVIEW platform is embedded; LabVIEW fuzzy control kit Fuzzy Logic is used for constructing a fuzzy controller; all sensors collect corresponding signals respectively, and the collected signals are modulated and converted through a data collecting card; the signals modulated and converted through the data collecting card are transmitted to the computer in which the LabVIEW platform is embedded for processing, and a corresponding instruction is sent out; the instruction is output to an execution mechanism to be executed through a VISO node in the LabVIEW software via an I / O port. According to the method, the concentration of the nutrient solution is subjected to subdivision control adjustment according to the different growth periods of crops, precise irrigation is achieved, and normal planting of the crops is guaranteed; many peripheral hardware circuits are omitted, and cost and operation and application difficulty are reduced; a control system has good extensibility, and man-machine interaction is friendly.

Description

technical field [0001] The invention relates to the technical field of agricultural equipment, in particular to a LabVIEW-based automatic irrigation control method for a greenhouse water and fertilizer integrated nutrient solution. Background technique [0002] Agriculture is the foundation of a country, and the degree of automation, informatization and intelligence is particularly important. The application of water and fertilizer integrated nutrient solution irrigation technology in agricultural production has enabled traditional agriculture to get rid of the traditional model of artificial water and fertilizer irrigation and achieve water and fertilizer saving. , saving labor, increasing efficiency, and reducing the effect of agricultural ecological environment pollution is an important way to realize agricultural modernization. With the maturity of water and fertilizer integrated nutrient solution irrigation technology, some agricultural developed countries have populari...

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Problems solved by technology

[0003] There are many key problems in the automatic irrigation system realized by applying this technology: 1. The ratio of nutrient solution concentration is unreasonable. Different crops have different requirements for nutrients in different growth periods. If there are too many nutrients, the loss will be serious and wasteful. Too little nutrient will affect the normal growth of crops; 2. The existing greenhouse water and fertilizer integrated irrigation automatic control equipment, the whole system is relatively expensive, and technicians often cannot solve problems in time

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