METHOD AND DEVICE FOR USING LIGHT-EMITTING DIODE IN GREENHOUSE Russian patent published in 2014 - IPC A01G7/04 A01G9/24 F21V29/00 

FIELD: agriculture.

SUBSTANCE: group of inventions relates to agriculture and electricity. The modular system comprises a housing which comprises: a series of light-emitting diodes (LED), of least two different colours for generating light within a colour spectrum, at that the LED are mounted, preferably, with fixation when latching on the plate, preferably thermally conductive, or near it, which is equipped with cooling means of LED using a cooler; a processor for controlling the magnitude of current supplied to the LED row, so that the magnitude of the current supplied to them determines numbers the light colour generated near the LED, and a flat translucent element having translucent lenses connected to the LED, to control the scattering angle of light emitted by each LED, for the uniform illumination of the surface; at that the housing is provided with a channel for receiving a tube for supplying power and, as a version, a cooler for the LED system. The system comprises a closed photobioreactor illuminated by one or several modular LED systems according to cl. 1. In the method of screening for optimum illumination the plant material is placed in the bioreactor illuminated with one or several modular LED systems according to cl. 1, and the rate of formation of CO₂ in the plant material when exposed to light of different intensity is measured. The control system comprises a photobioreactor with the means of screening of photosynthetic activity, which is illuminated by the modular LED system according to cl. 1 in addition to incoming sun light; the computer for processing the data obtained from the means of screening of photosynthetic activity, which enables to screen the photosynthetic activity of plant material of the photobioreactor illuminated with light of different wavelengths and intensities; to measure the incoming sun light and if its intensity is reduced, to increase the intensity of the LED; and to control illumination of plants in the greenhouse by illuminating the plants with light having a wavelength composition and intensity, which provide the highest photosynthetic activity in the photobioreactor. In the control method using the photobioreactor the photosynthetic activity of plant material placed in the reactor is screened, which is illuminated by the modular LED system according to cl. 1 in addition to incoming sun light; using the computer the data obtained by means of screening of photosynthetic activity are processed; at that the photobioreactor screens the photosynthetic activity of the material which is illuminated with light of different wavelengths and intensities, and the computer controls illumination of plants in the greenhouse, illuminating the plants with the light having a composition of wavelength and intensity which provide the highest photosynthetic activity. The greenhouse system comprises a modular LED system according to any one of cl. 1-11 inside the greenhouse for plant growth; the measuring means for measuring one or several variables, which are directly or indirectly linked to the growth and development of plants; the control means made with the ability to control lighting, depending on the output signals of the measuring means. The reactor comprises one or several compartments for storage of liquid comprising a culture of phototrophic microorganisms; the inlet pipe for feeding gas stream comprising CO₂, in one or several compartments; the outlet pipe for removing gas from one or several compartments, means of controlling the temperature of the culture of phototrophic microorganisms, and the modular LED system according to any of cl. 1-11.

EFFECT: inventions enable to provide for uniform illumination of the surface.

18 cl, 2 dwg, 1 ex