CN104302062B - A kind of illumination control system and method for employing multicolor LED intelligent plant factor - Google Patents

Abstract

The invention discloses an illumination control system and method for an intelligent plant factory using multi-color LEDs. By detecting the luminous power of LED plant lamps of different light colors, the luminous power ratios of various light colors are calculated, and according to the LED plant lights of various light colors The luminous power ratio of the lamp and the preset reference luminous power ratio are calculated and the lighting control signal is sent out. The lighting control signal controls the luminous power of LED plant lights with different light colors, so that the luminous power ratio of various light colors is consistent with the reference luminous power ratio. Matching to meet the lighting needs of different growth stages of plants. Through continuous and real-time online detection of the luminous power of LED plant lights with various light colors, the luminous power of LED plant lights with various light colors can be adjusted in combination with the light requirements of plants in different growth stages, so that the plants in the plant factory are in the most optimal state. Optimum growth status, and improve the energy utilization rate of plant factories, saving energy.

Description

A lighting control system and method for an intelligent plant factory using multi-color LEDs

technical field

The invention relates to the technical field of plant factories, in particular to an illumination control system and method for an intelligent plant factory using multi-color LEDs.

Background technique

The plant factory integrates biotechnology, modern optoelectronic technology, information technology, mechanical engineering, artificial environment control and other high technologies. It is recognized as the most advanced development stage of agriculture in the world. It is considered to be an effective way to solve population, resource and environmental problems in the future. technical means. Hundreds of plant factories abroad, especially in Europe, America, Japan, and South Korea, have been put into operation, and they have begun to make profits by planting cash crops such as ginseng and flowers. Seasonal vegetables such as lettuce and tomatoes grown in plant factories are becoming more and more popular and have appeared in many supermarkets including Taiwan. Plant factories can save more than 90% of water consumption and more than 90% of chemical fertilizers; because of no pesticides and soilless cultivation, 100% food safety is guaranteed; because of indoor multi-layer cultivation, land resources can be saved hundreds of times; because plant factories It can be built in the center of the city, saving transportation costs and helping to improve urban air quality.

In recent years, the degree of urbanization in mainland China has been increasing, and at the same time, it is also facing a series of problems such as the shortage of land resources and land pollution. Plant factories are an effective solution to these problems. In the past, the development of plant factories in China was mainly restricted by high energy consumption; in recent years, the use of semiconductor light-emitting diode (LED) lighting has reduced the energy consumption of plant factories in the past by about 50%. On the one hand, it is because the energy efficiency of LED is higher than that of traditional light sources. On the other hand, it is because there are many unnecessary wavelengths in the spectrum of traditional light sources, which have little effect on promoting plant growth. LED light source has many important characteristics different from other traditional electric light sources, such as energy saving and environmental protection, less heat generation, easy to disperse or combine control, etc. The use of LEDs to provide lighting and regulate light quality during plant growth can not only regulate the growth and development of plants, shorten the cultivation cycle, improve quality, but also reduce energy consumption and cost. For example, a recent research report has shown that the use of 630nm red LED light source and 460nm blue LED light source, and the ratio of the two is 8:1, the most conducive to the growth and development of lettuce, the highest nutritional index of lettuce, and can effectively Reduce power consumption of light sources.

The use of LEDs in plant factories is still in its early stages. Not only there is still a lot of room for improvement in LED energy efficiency, but there is still a lot of work to be done in the formulation of LED spectra. Continue to develop efficient and intelligent LED lighting technology, which is expected to further improve the technical level of LED used in plant factories and greatly reduce energy consumption.

At present, the power ratio of red light and blue light in plant factories is fixed, but in fact different types of plants require different light intensities and ratios at different growth stages, resulting in plants in plant factories not being in the best growth state , and cannot perform continuous and real-time online light monitoring and light control for red, blue and other polychromatic lights according to the growth status of plants.

Contents of the invention

Aiming at the technical problems existing in the current plant factory, the present invention proposes an illumination control system and method for an intelligent plant factory using multi-color LEDs.

An illumination control system for an intelligent plant factory using multi-color LEDs proposed by the present invention includes: LED plant lights of various light colors, optical power detection devices, illumination control devices, and plant light control circuits;

The optical power detection device is connected to the lighting control device, the lighting control device is connected to the plant light control circuit, and the plant light control circuit is connected to various light color LED plant lights;

A variety of light color LED plant lights are set in the plant factory to provide plants with a variety of light colors of light; the optical power detection device is used to detect the luminous power of different light color LED plant lights; The luminous power ratio of the plant lamp and the preset reference luminous power ratio are calculated and a light control signal is sent out, wherein the reference luminous power ratio is determined according to the light requirements of the plants at different growth stages; the plant light control circuit is controlled according to the light control signal The luminous power of different light color LED plant lights makes the luminous power ratio of various light color LED plant lights match the reference luminous power ratio to meet the lighting needs of plants in different growth stages.

Preferably, the plant light control circuit controls the luminous power of LED plant lights of various light colors according to the illumination control signal, including: the plant light control circuit controls the number of lights of LED plant lights of each light color, and/or, controls each The power supply voltage or supply current of LED plant lights of various light colors can be used to control the luminous power of LED plant lights of various light colors.

Preferably, the multi-color LED plant lights include red light and blue light, and the optical power detection device includes a red light power detection device and a blue light power detection device. The red light power detection device is used to detect the luminous power of the red light, and the blue light The power detection device is used to detect the luminous power of the blue light.

Preferably, the quantity ratio of red light and blue light is 4-6:1, preferably 5:1; preferably, the light demand ratios of different growth stages of plants are different, and the light power ratio of red light and blue light is 10-2 :1.

Preferably, the multi-color LED plant lights also include infrared lamps and/or ultraviolet lamps, and the optical power detection device also includes an infrared optical power detection device and an ultraviolet optical power detection device, and the infrared optical power detection device is used to detect the luminescence of the infrared lamps Power, the ultraviolet light power detection device is used to detect the luminous power of the ultraviolet lamp.

Preferably, the optical power detection device includes an optical power detection module, the optical power detection module includes a crystalline silicon photovoltaic chip and a glass plate coated with a band-pass filter film covering the surface of the crystalline silicon photovoltaic chip, and the band-pass filter film consists of a multilayer interference film Composition, the band-pass filter film only allows light with a predetermined wavelength range to pass through; preferably, an optical power detection module is provided on an optical power detection device, and an optical power detection device can detect a light color LED plant light Luminous power; preferably, a plurality of optical power detection modules are integrated on an optical power detection device, and the band-pass filter films of multiple optical power detection modules allow different wavelength ranges of light to pass through, and an optical power detection device can detect multiple The luminous power of a light-color LED plant lamp; preferably, the optical power detection device also includes a signal amplification circuit and an A/D conversion circuit, and the optical power detection module is connected with the signal amplification circuit, and the signal amplification circuit is used to detect the signal For amplification processing, the signal amplification circuit is connected with the A/D conversion circuit, and the A/D conversion circuit is used for A/D conversion of the amplified signal into a digital signal.

Preferably, a plurality of optical power detection devices are arranged between the plants and/or between the leaves of the plants to detect the luminous power of LED plant lights with different light colors; preferably, the illumination control device can The detection results calculate the uniformity of the luminous power of LED plant lights with different light colors in the space environment of the plant factory.

Preferably, the lighting control device can also analyze the luminous power ratios of LED plant lights with multiple light colors and the plant growth conditions in a predetermined time interval, and adjust the reference luminous power ratios according to the analysis results.

Preferably, the reference luminous power ratio is determined according to the luminous power of multiple light colors in sunlight in different growth stages of plants; It is determined by the luminous power of various light colors in sunlight during the growing season; preferably, when the LED plant light initially emits light, the lighting control device controls the various light colors of the LED plant light under the reference luminous power ratio through the plant light control circuit. Work.

The present invention also proposes a lighting control method for an intelligent plant factory using multi-color LEDs, which is applied in the above-mentioned lighting control system, and the lighting control method includes:

S1. Detect the luminous power of LED plant lights with different light colors respectively;

S2. According to the measured luminous power of LED plant lights with different light colors, calculate the luminous power ratio of LED plant lights with various light colors;

S3. Calculate according to the luminous power ratio and a preset reference luminous power ratio and send out a lighting control signal, wherein the reference luminous power ratio is determined according to the lighting requirements of plants in different growth stages;

S4. Control the luminous power of LED plant lights with different light colors according to the light control signal, so that the luminous power ratio of various light colors matches the reference luminous power ratio, so as to meet the lighting needs of plants in different growth stages;

Preferably, in S4, the control of the luminous power of the LED plant lights of various light colors according to the lighting control signal is specifically as follows: by controlling the number of lights of the LED plant lights of each light color, and/or, controlling each light color The power supply voltage or supply current of the LED plant light controls the luminous power of the LED plant light of various light colors.

In the illumination control process of the present invention, by detecting the luminous power of LED plant lights with different light colors, the luminous power ratios of LED plant lights of various light colors are calculated, and the calculation is performed according to the luminous power ratios and the preset reference luminous power ratios, and light is emitted. Control signals, and then control the luminous power of LED plant lights with different light colors according to the light control signal, so that the luminous power ratio of various light colors matches the reference luminous power ratio to meet the lighting needs of plants in different growth stages.

Through continuous and real-time online detection of the luminous power of LED plant lights with various light colors, the luminous power of LED plant lights with various light colors can be adjusted according to the light requirements of plants at different growth stages, so as to provide reasonable and sufficient light for plant growth. Light nutrition makes the plants in the plant factory in the best growth state, which is beneficial to the growth of plants, improves the energy utilization rate of the plant factory, and saves energy.

Description of drawings

FIG. 1 is a schematic structural diagram of an illumination control system for an intelligent plant factory using multi-color LEDs proposed by an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of an optical power detection device proposed by an embodiment of the present invention.

FIG. 3 is a schematic flowchart of a lighting control method for an intelligent plant factory using multi-color LEDs proposed by an embodiment of the present invention.

detailed description

As shown in FIG. 1 , FIG. 1 is a schematic structural diagram of an illumination control system for an intelligent plant factory using multi-color LEDs proposed by an embodiment of the present invention.

Referring to Fig. 1, an illumination control system for an intelligent plant factory using multi-color LEDs proposed by an embodiment of the present invention includes: LED plant lights of various light colors, optical power detection devices, illumination control devices, and plant light control circuits;

In the intelligent plant factory, LED plant lights with multiple light colors are provided, and the LED plant lights with multiple light colors include red LED plant lights and blue LED plant lights, and the numbers of the two are M and N respectively, of which , the red LED plant light and the blue LED plant light emit red light and blue light respectively, providing red light and blue light for the plants in the intelligent plant factory;

The optical power detection device includes a red light power detection device and a blue light power detection device, wherein the red light power detection device is used to detect the red light power emitted by the red LED plant lamp, and the blue light power detection device is used to detect the blue LED plant light. The blue light power of the plant; specifically, a plurality of red light power detection devices and a plurality of blue light power detection devices are arranged between the plants and/or between the leaves of the plant;

The red light power detection device and the blue light power detection device are connected to the lighting control device, and the lighting control device calculates the ratio of red and blue light powers according to the detected red light luminous power and blue light luminous power; a reference luminous power ratio is preset in the lighting control device , wherein, the reference luminous power ratio is determined according to the lighting requirements of plants in different growth stages; the lighting control device is used to compare and calculate according to the red and blue light power ratio and the preset reference luminous power ratio and send out a lighting control signal;

The lighting control device is connected to the plant light control circuit, and the plant light control circuit is connected to the red LED plant light and the blue LED plant light respectively; the plant light control circuit controls the luminous power of the red LED plant light and the blue LED plant light according to the light control signal , so that the luminous power ratio of red and blue light matches the reference luminous power ratio, so as to meet the lighting requirements of plants in different growth stages.

During the illumination control process, when the red and blue light power ratio is less than the reference luminous power ratio, the first illumination control signal is sent according to the difference between the two to control the luminous power of the red LED plant light and the blue LED plant light through the plant light control circuit, When the red and blue light power ratio is greater than the reference luminous power ratio, a second light control signal is sent according to the difference between the two to control the luminous power of the red LED plant light and the blue LED plant light through the plant light control circuit, so that the red and blue light luminous power The scale matches the reference luminous power scale.

In specific implementation, the plant light control circuit controls the luminous power of the red LED plant light and the blue LED plant light according to the light control signal, which can be carried out in the following manner: A. By controlling the opening of the red LED plant light and the blue LED plant light B. Control the luminous power of red LED plant lights by controlling the power supply voltage or supply current of each red LED plant light, and control the power supply voltage or supply current of each blue LED plant light To control the luminous power of the blue LED plant light; C. Use the combination of A mode and B mode to control the luminous power of the red LED plant light and the blue LED plant light.

In the actual application process, according to the ratio requirements of red light and blue light for plant growth, the initial number of the number M of red LED plant lights and the number N of blue LED plant lights can be M:N=5:1, the power of red and blue light The ratio can vary from 10:1 to 2:1 depending on plant growth needs.

In the above embodiments, the optical power detection device includes an optical power detection module, a signal amplification circuit and an A/D conversion circuit, and the optical power detection module includes a crystalline silicon photovoltaic chip and a bandpass filter film coated on the surface of the crystalline silicon photovoltaic chip The band-pass filter film is composed of a multi-layer interference film, and the band-pass filter film only allows light with a predetermined wavelength range to pass through; among them, the band-pass filter film in the red light power detection device only allows wavelengths from 630nm to 660nm The red light in the blue light power detection device only allows the blue light with a wavelength of 440nm to 470nm to pass through, and outputs it in the form of voltage; the optical power detection module is connected to the signal amplification circuit, and the signal amplification circuit is used for The detected voltage signal is amplified, the signal amplifying circuit is connected with the A/D conversion circuit, and the A/D conversion circuit is used for A/D conversion of the amplified voltage signal into a digital signal.

In the above embodiment, the red light power detection device and the blue light power detection device can exist independently; or, the red light power detection device and the blue light power detection device can be integrated on one optical power detection device in the form of modules, and one optical power detection device The luminous power of red light and blue light can be detected simultaneously.

As shown in FIG. 2 , FIG. 2 is a schematic structural diagram of an optical power detection device proposed by an embodiment of the present invention.

Referring to Fig. 2, an optical power detection device proposed by an embodiment of the present invention includes a housing 1 and a transparent optical window 2, the transparent optical window 2 is installed on the housing 1, and a red light power detection device is provided in the housing 1 module and the blue light power detection module, wherein both the red light power detection module and the blue light power detection module include a crystalline silicon photovoltaic chip 3 and a glass substrate 4 coated with a bandpass filter film 5 covering the surface of the crystalline silicon photovoltaic chip 3, and the bandpass The filter film 5 is composed of multi-layer interference films. The band-pass filter film 5 of the red light power detection module only allows the red light from 630nm to 660nm to pass through, and the band-pass filter film 5 of the blue light power detection module only allows the blue light from 440nm to 470nm to pass through. Moreover, output pins 6 are respectively provided on the two optical power detection modules, and the detected optical power signals are respectively output in the form of voltage through the output pins 6 . The two optical power detection modules are arranged in one optical power detection device in an integrated manner, so that the luminous power of red light and blue light can be detected simultaneously.

In a further embodiment, according to the detection results of multiple red light power detection devices and multiple blue light power detection devices, the illumination control device can calculate the uniformity of the luminous power of red light and blue light in the space environment of the plant factory according to the detection results, And further adjust the parameters such as the installation position and irradiation direction of the red LED plant light and the blue LED plant light according to the calculation results to meet the uniformity requirements.

In the above embodiments, the reference luminous power ratio is determined according to the lighting requirements of plants in different growth stages, specifically, the reference luminous power ratio is determined according to the light power of red light and blue light in natural sunlight in different growth stages of plants And sure.

The reference luminous power ratio can be determined according to the luminous power of various light colors in sunlight when different plants are in the best production areas and high-yield growing seasons. Or the luminous power of red light and blue light of grapes or wolfberries in sunlight at different growth stages during the high-yield season in Ningxia. Alternatively, the reference luminous power ratio can be determined by taking the average of the luminous power of various light colors in sunlight when different plants are in multiple optimal production regions and growing seasons, for example, growing vegetables in intelligent plant factories It can be calculated according to the luminous power of red light and blue light in sunlight in different growth stages of corresponding vegetables in different regions at home and abroad, and by using an appropriate calculation method.

In the light control process of the intelligent plant factory, when the LED plant light initially emits light, the light control device controls the red LED plant light and the blue LED plant light to work under the reference luminous power ratio through the plant light control circuit, so that the plants are from In the early stage of growth, it begins to grow under better light and nutrition.

In the above-mentioned embodiments, the reference luminous power ratio is determined according to the illumination requirements of plants at different growth stages. Analyze the results to adjust and modify the reference luminous power. In the specific implementation process, the light control device records and stores the red light luminous power and blue light luminous power of plants at different stages. , you can increase or decrease the ratio of red and blue light luminous power and observe its growth, so as to obtain a better ratio of red and blue light power in this growth stage, and further compare the red and blue light power of this growth stage in the reference luminous power ratio The ratio is replaced or adjusted to achieve the purpose of optimizing the reference luminous power ratio.

In the actual application process, visible light LED plant lights of other colors such as green light and yellow light can also be set according to actual needs, and green light power detection devices, yellow light power detection devices, etc. are set up to detect their optical power respectively, and , it is also possible to integrate the optical power detection devices of multiple light colors into one optical power detection device, which will not be repeated here.

In a further embodiment, in order to provide comprehensive nutrition for the growth of plants, the LED plant lights also include infrared LED plant lights and/or ultraviolet LED plant lights, and the infrared LED plant lights and ultraviolet LED plant lights emit infrared light and ultraviolet light respectively. The plants in the plant factory provide infrared light illumination and ultraviolet light illumination; correspondingly, it also includes an infrared light power detection device and an ultraviolet light power detection device, which are used to detect the optical power and ultraviolet light of the infrared light emitted by the infrared LED plant lamp respectively. The optical power of the ultraviolet light emitted by the light LED plant lamp.

Furthermore, the infrared light power detection device and the ultraviolet light power detection device can also be integrated into an optical power detection device in the form of modules with the red light power detection device and the blue light power detection device, and the output pins can be set to detect the The optical power signal is output as a voltage.

In the actual application process, according to actual needs, invisible light LED plant lights of other colors besides infrared and ultraviolet can also be set, and an optical power detection device is set accordingly to detect its optical power.

In the embodiment of the present invention, through continuous and real-time online detection of the luminous power of LED plant lights with various light colors, the luminous power of LED plant lights with various light colors is adjusted according to the lighting requirements of plants in different growth stages, for Plant growth provides reasonable and sufficient light and nutrition, so that the plants in the plant factory are in the best growth state, which is beneficial to the growth of the plant, and improves the energy utilization rate of the plant factory and saves energy.

As shown in FIG. 2 , FIG. 2 is a schematic flowchart of an illumination control system for an intelligent plant factory using multi-color LEDs proposed by the present invention.

Referring to Fig. 2, a lighting control method of an intelligent plant factory using multi-color LEDs proposed by the present invention is applied to the lighting control system of the above-mentioned intelligent plant factory using multi-color LEDs, and the lighting control method includes:

S1. Detect the luminous power of LED plant lights with different light colors respectively;

S2. According to the measured luminous power of LED plant lights with different light colors, calculate the luminous power ratio of LED plant lights with various light colors;

S3. Calculate according to the luminous power ratio and a preset reference luminous power ratio and send out a lighting control signal, wherein the reference luminous power ratio is determined according to the lighting requirements of plants in different growth stages;

S4. Control the luminous power of LED plant lights of different light colors according to the light control signal, so that the luminous power ratio of various light colors matches the reference luminous power ratio, so as to meet the lighting needs of plants in different growth stages.

Wherein, in S4, the control of the luminous power of various light-color LED plant lights according to the illumination control signal is specifically as follows: by controlling the number of lights of each light-color LED plant light, and/or, controlling each light-color LED The power supply voltage or supply current of the plant light controls the luminous power of the LED plant light of various light colors.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (9)

1. A kind of 1. illumination control system of employing multicolor LED intelligent plant factor, it is characterised in that including：It is a variety of photochromic LED plant lamps, optical power detecting device, illumination control device, plant lamp control circuit；

   Optical power detecting device is connected with illumination control device, and illumination control device is connected with plant lamp control circuit, plant lamp Control circuit is connected with a variety of photochromic LED plant lamps；

   A variety of photochromic LED plant lamps are arranged in plant factor provides a variety of photochromic illumination for plant；Optical power detecting device For detecting the luminous power of different photochromic LED plant lamps；Illumination control device is used for the hair according to a variety of photochromic LED plant lamps Luminous power ratio and it is default carry out calculating concurrent light extraction with reference to luminous power ratio shine control signal, wherein with reference to luminous power Ratio be according to plant in different growth phases in sunshine a variety of photochromic luminous powers and determine；Plant lamp control electricity Road controls the luminous power of different photochromic LED plant lamps according to illumination control signal so that a variety of photochromic LED plant lamps light Power proportions with reference to luminous power ratio with matching, to meet the lighting requirements of plant different growth phases；

   The plant lamp control circuit controls the luminous power of a variety of photochromic LED plant lamps to include according to illumination control signal：Plant Thing lamp control circuit by controlling the quantity of turning on light of every kind of photochromic LED plant lamps, and/or, control every kind of photochromic LED plant lamps Supply voltage or supply current control the luminous power of a variety of photochromic LED plant lamps；A variety of photochromic LED plant lamps include red Light lamp and blue-ray light, optical power detecting device include red optical power detecting device and blue power detection device, and feux rouges power is visited The luminous power that device is used to detect red globe lamp is surveyed, blue power detection device is used for the luminous power for detecting blue-ray light；

   Illumination control device can also be according to the luminous power ratio of a variety of photochromic LED plant lamps and the plant in scheduled time section Growing state is analyzed and refers to luminous power ratio according to analysis result adjustment；During specific implementation, illumination control Device is recorded and stored in the red light-emitting power and blue light emitting power of different phase to plant, in scheduled time section In, can be by increasing or reducing when plant production varies less or when there is the underfed external manifestation of other illumination Red blue light emitting power proportions simultaneously observe its growing state, so as to obtain the more preferably red blue power ratio in the growth phase Example, further the red blue power ratio with reference to the growth phase in luminous power ratio can be replaced or be adjusted, To reach purpose of the optimization with reference to luminous power ratio；

   In LED plant lamp initial luminous, illumination control device controls a variety of photochromic LED plant lamps by plant lamp control circuit Worked under with reference to luminous power ratio.
2. 2. the illumination control system of employing multicolor LED according to claim 1 intelligent plant factor, its feature exist In being when being in one or more preferably production regions and the season of growth according to plant in sunshine with reference to luminous power ratio A variety of photochromic luminous powers and determine.
3. 3. the illumination control system of employing multicolor LED according to claim 1 intelligent plant factor, its feature exist In the quantitative proportion of red globe lamp and blue-ray light is 4-6：1.
4. 4. the illumination control system of employing multicolor LED according to claim 3 intelligent plant factor, its feature exist In the quantitative proportion of red globe lamp and blue-ray light is 5:1；The lighting requirements ratio of plant different growth phases is different, feux rouges and indigo plant The luminous power ratio of light is in 10-2：1.
5. 5. the illumination control system of employing multicolor LED according to claim 1 intelligent plant factor, its feature exist In a variety of photochromic LED plant lamps also include infrared lamp and/or uviol lamp, and optical power detecting device also includes infrared luminous power and visited Device and uv power detection device are surveyed, infrared optical power detecting device is used for the luminous power for detecting infrared lamp, ultraviolet light Power detection device is used for the luminous power for detecting uviol lamp.
6. 6. the illumination control system of the intelligent plant factor of the employing multicolor LED according to any one of claim 1-5, Characterized in that, optical power detecting device includes optical power detecting module, optical power detecting module include crystal silicon photovoltaic chip and The glass negative for being coated with bandpass filtering film of crystal silicon photovoltaic chip surface is covered in, bandpass filtering film is made up of multi-coated interference film, Bandpass filtering film only allows to have the light of predetermined wavelength range to pass through；A luminous power is provided with an optical power detecting device Detecting module, an optical power detecting device can detect a kind of luminous power of photochromic LED plant lamps.
7. 7. according to the illumination control system of the intelligent plant factor of the employing multicolor LED described in claim 6, its feature exists In integrated multiple optical power detecting modules, the bandpass filtering of multiple optical power detecting modules in an optical power detecting device Film allows the wave-length coverage difference of the light passed through, and an optical power detecting device can detect the hair of a variety of photochromic LED plant lamps Luminous power；Optical power detecting device also includes signal amplification circuit and A/D change-over circuits, and optical power detecting module is amplified with signal Circuit connects, and signal amplification circuit is used to be amplified the signal detected processing, signal amplification circuit and A/D change-over circuits Connection, A/D change-over circuits are used to be converted into data signal to the signal progress A/D by amplification.
8. 8. the illumination control system of the intelligent plant factor of the employing multicolor LED according to any one of claim 1-5, Characterized in that, multiple optical power detecting devices are set to plant different photochromic LED between the plant of plant and/or between blade The luminous power of thing lamp is detected；Illumination control device can calculate according to the result of detection of multiple optical power detecting devices plants The uniformity of the luminous power of different photochromic LED plant lamps in the space environment of thing factory.
9. 9. a kind of illumination control method of employing multicolor LED intelligent plant factor, it is characterised in that apply in claim In the illumination control system of the intelligent plant factor of employing multicolor LED described in 1-5, the illumination control method includes：

   S1, the luminous power for separately detecting different photochromic LED plant lamps；

   The luminous work(of a variety of photochromic LED plant lamps is calculated in the luminous power for the different photochromic LED plant lamps that S2, basis measure Rate ratio；

   S3, according to luminous power ratio and it is default carry out calculating concurrent light extraction with reference to luminous power ratio shine control signal, its Middle with reference to luminous power ratio is determined according to the lighting requirements of plant different growth phases；

   S4, the luminous power according to the different photochromic LED plant lamps of illumination control signal control so that a variety of photochromic luminous powers Ratio with reference to luminous power ratio with matching, to meet the lighting requirements of plant different growth phases；It is described according to illumination control Signal processed controls the luminous power of a variety of photochromic LED plant lamps specific as follows：By controlling turning on light for every kind of photochromic LED plant lamps Quantity, and/or, supply voltage or the supply current of every kind of photochromic LED plant lamps are controlled to control a variety of photochromic LED plant lamps Luminous power.