LED plant growth spectrum fitting algorithm and LED plant lamp

A plant growth lamp and spectrum fitting technology, applied in the field of LED plant growth lamps, can solve the problems of high operating costs, high energy consumption of light sources, low light utilization rate, etc., and achieve the effect of improving utilization efficiency

Inactive Publication Date: 2016-01-13
GUANGDONG RAYTON INTELLIGENT OPTO CO LTD +1
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Problems solved by technology

The artificial light sources used in the agricultural field for a long time are mainly high-pressure sodium lamps, fluorescent lamps, metal halide lamps, incandescent lamps, etc., but these light sources consume a lot of energy, have high operating costs, and have low light utilization efficiency.

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  • LED plant growth spectrum fitting algorithm and LED plant lamp
  • LED plant growth spectrum fitting algorithm and LED plant lamp
  • LED plant growth spectrum fitting algorithm and LED plant lamp

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0037] A spectral fitting algorithm for LED plant growth lamps, comprising the following steps:

[0038] (1) The absorption spectrum curve of chlorophyll in the photosynthesis of green plants is selected as a reference for fitting.

[0039] (2) Establish the spectral radiation model of a single LED: Usually the light emitted by the light source has a certain wavelength range, each wavelength corresponds to a different radiation flux, and the total radiation flux of the light source is the sum of the radiation fluxes of each wavelength. According to the radiation characteristics of the LED light source, the distribution model of the radiation intensity of a single LED within a unit solid angle in the direction of its optical axis with the wavelength can be approximated by a Gaussian distribution function or a Lorentzian distribution function. The Gau...

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Abstract

The invention discloses an LED plant growth spectrum fitting algorithm. The algorithm is characterized by comprising the following steps: 1, establishing spectrum radiation model of a single LED: performing approximation on a distribution model of radiation intensities along with wavelengths in a unit solid angle on an optical axial direction of the single LED by use of a Gauss distribution function, f(x)=ae<-(x-b)<2> / C<2>>; and 2, carrying out a curve fitting algorithm: according to a superposition principle of spectrums, obtaining a basic mathematic model of spectrum synthesis of multiple LEDs: L(lambda)=sigma KiSi(lambda); and in a fitting process, setting a first wavelength lambda0 and a coefficient K0, and successively solving lambda (i) and Ki by use of a least square algorithm. According to the invention, any one fitting spectrum with quite high similarity with a target spectrum can be obtained through spectrum fitting.

Description

technical field [0001] The invention relates to the field of LED lighting, in particular to an LED plant growth lamp that provides a suitable spectrum for plant growth. Background technique [0002] Light is an important factor in the process of plant growth and photosynthesis. The light source required for plant growth and development on the earth is mainly sunlight. Its spectrum is mainly composed of radio waves, far, middle and near infrared rays, visible light, ultraviolet rays, etc. It is a continuous spectrum. When plants perform photosynthesis and energy conversion, they absorb light selectively, so only a part of the light is effectively used. With the development of science and technology, artificial light sources have gradually replaced or supplemented the shortage of natural light sources to promote the rapid development of agriculture and biological industries. The artificial light sources used in the agricultural field for a long time are mainly high-pressure ...

Claims

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Application Information

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IPC IPC(8): G01J3/42F21S8/00
Inventor 叶普生石智伟刘树菁徐德浓
Owner GUANGDONG RAYTON INTELLIGENT OPTO CO LTD
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