Intelligent plant supplementary lighting method and device

A plant and intelligent technology, applied in the field of plant intelligent light supplement, can solve the problems of not considering the difference in the ratio of red and blue light, the existence of system light supplement accuracy, and poor system flexibility, so as to achieve energy saving, high light energy utilization rate, light The effect of high absorption rate

Inactive Publication Date: 2011-06-01
NORTHWEST A & F UNIV
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Problems solved by technology

Among them, the first two methods are easy to use, but due to the influence of human experience and external environment, the system flexibility is poor and the fill light effect is very different.
The third mode adopts the mode of automatic detection and automatic supplementary light, but

Method used

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  • Intelligent plant supplementary lighting method and device
  • Intelligent plant supplementary lighting method and device

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0035] In this embodiment, the supplementary light group uniformly selects an LED array, which is cheap and has a low driving current.

[0036] In the present invention, the amount of supplementary light required is the actual luminous brightness of the LED lamp group. The system determines the required current through the linear proportional relationship between the brightness of the LED lamp group and the LED lamp current. The larger the supplementary light amount, the greater the LED drive current output by the system. The proportional relationship between the pulse width modulation (PWM) signal duty cycle and the driving current realizes the application of the PWM signal duty cycle of the microcontroller to quantitatively control the LED driving current. The larger the required driving current, the higher the corresponding PWM duty cycle. The ratio varies...

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Abstract

The invention relates to an intelligent plant supplementary lighting method. The method comprises the following steps: setting a red light threshold and a blue light threshold according to the demand of a plant on red light and blue light in each growth stage; detecting the intensities of the red light and the blue light in the growing environment of the plant; comparing the intensities with the corresponding red light threshold and blue light threshold to judge whether supplementary lighting is required and determine the accurate volume of the supplementary lighting; if the supplementary lighting is required, calculating the input current of a corresponding supplementary lighting set according to the volume of the supplementary lighting, so as to accurately control the intensity of the supplementary lighting set and realize intelligent and accurate supplementary lighting on demand, and if the supplementary lighting is not required, turning off the supplementary lighting set. The invention also provides a device realizing the method. By utilizing the supplementary lighting method and device in the invention, quantitative demand supplementary lighting by wavelength can be carried out on the plant according to the characteristics in different growth stage of the plant.

Description

technical field [0001] The invention belongs to the field of agricultural modernization, relates to the artificial control of the plant growth process, and in particular relates to a method and equipment for intelligent light supplementation of plants. Background technique [0002] With the development of science and technology, artificial lighting technology has been proposed and widely researched and utilized. In the past plant supplementary light system, the supplementary light sources mainly include incandescent lamps, halogen tungsten lamps, high-pressure mercury fluorescent lamps, high-pressure sodium lamps, etc. These light sources have the defect of unsatisfactory spectral matching in the application of plant supplementary light, and the light source emits white light spectrum. Or linear spectral lines, which can be absorbed by plants are only the light of individual bands, and the light of other bands is wasted, which is not energy-saving; in addition, these light s...

Claims

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Application Information

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IPC IPC(8): A01G9/20H05B37/02
Inventor 张海辉胡瑾杨青吴婷婷田威赵斌谭彪王兴飞岳青林忠华陈希同冯建合樊宏攀翟相雯刘春芳段耿耿
Owner NORTHWEST A & F UNIV
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