CN106922414A - A kind of intelligent controlling device and method that plant growth lighting is carried out with LED - Google Patents
A kind of intelligent controlling device and method that plant growth lighting is carried out with LED Download PDFInfo
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- CN106922414A CN106922414A CN201710107321.5A CN201710107321A CN106922414A CN 106922414 A CN106922414 A CN 106922414A CN 201710107321 A CN201710107321 A CN 201710107321A CN 106922414 A CN106922414 A CN 106922414A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/04—Electric or magnetic or acoustic treatment of plants for promoting growth
- A01G7/045—Electric or magnetic or acoustic treatment of plants for promoting growth with electric lighting
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
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- Biodiversity & Conservation Biology (AREA)
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Abstract
The present invention relates to a kind of intelligent controlling device and method that plant growth lighting is carried out with LED, device includes signal processing unit, LED light source module, environmental factor monitoring unit, environmental factor regulation and control unit, and LED light source module includes LED feux rouges module, LED blue modules, LED green modules, LED infrared modules and LED ultraviolet modules；Present invention combination PWM technologies, regulate and control, it is to avoid partial spectrum is wasted, and reaches light filling efficiency higher to red bluish-green grade light ratio；Green light rays, ultraviolet light and IR are added on the basis of red blue light line needed for photosynthesis of plant；Green glow helps lend some impetus to the growing way of plant, and plant leaf blade coloring aspect is especially notable；IR adjusts the temperature of surrounding plants environment；Ultraviolet light has the effect of sterilizing；On the premise of light needed for providing, it is aided with carbon dioxide, water, temperature, three important elements, the growth conditions needed for comprehensive, various dimensions guarantee plant.
Description
Technical field
The present invention relates to LED lamp plant growth photograph is carried out in application field agriculturally, more particularly to one kind with LED
Bright intelligent controlling device and method.
Background technology
The vital movement of the mankind be unable to do without green plants, and the vital movement of plant be unable to do without illumination.Plant passes through light cooperation
It is fixed in plant in the form of organic energy with by solar energy, so luminous environment is in head to the importance of facility cultivation
Position.And nowadays, environmental pollution, particularly haze increasingly manifest so that plant growth faces light application time and light quality declines
Severe situation.
The chamber planting growing environment excellent for vegetables provide, a kind of new way is provided to the lifting of its yield.And incite somebody to action
LED is applied to plant illumination compensation, then for vegetables provide the fine and luminous environment of health, break away from complicated outdoor environment because
Element, for and system the growth demand for meeting plant, maximum plant growth requirement is reached with minimum energy ezpenditure, to vegetables
The lifting of quality provides a kind of new possibility.
Photosynthetic formula：Carbon dioxide+water --- organic matter (storage energy)+oxygen.
It can be seen that photosynthetic raw material is carbon dioxide and water, condition is light, and place is chloroplaset, and product is that organic matter forms sediment
Powder and oxygen, it is concentration of intensity of illumination, temperature, humidity, carbon dioxide etc. to influence photosynthetic factor, therefore can not be single
Focus on growth factor in a certain respect.
Plant Determination of Chlorophyll a, b absorption spectrum peak value is respectively 660nm, 450nm.LED is monochromatic light, can meet plant life
Monochromatic light spectrum needed for long, can reach with Chlorophyll Absorption Spectrum peak value and fit like a glove, and can significantly lift the plant of light source
Physiology effectiveness, promotes plant efficient growth, improves utilization ratio of the plant to luminous energy, reducing energy consumption.
PWM (pulse width) light regulating technology is considered as being best suitable for the light regulating technology of LED.Carrying out pulse width PWM light modulations
When, modulate the switch controlling signal of LED drive chip by controlling pulse width dutycycle.The high-speed switch characteristic of LED makes
PWM light modulations are possibly realized.This light-dimming method has the advantages that using simple, high precision, efficiency high and good dimming effect.
With the development of science and technology with the extensive use of the network communications technology, modern greenhouse has marched toward information-based, intelligence
The epoch of change, for the lifting that Plant Light illumination is applied to plant products and quality provides a kind of possibility.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of efficient energy-saving, realized with LED monochromatic light it is right
Plant growth luminous environment carry out accurate light filling, be aided with to carbon dioxide in environment, temperature, humidity detection regulation and control, realize multidimensional
The intelligent controlling device of the plant growth environment regulation and control of degree.
To achieve the above object, technical scheme provided by the present invention is：Including signal processing unit, LED light source module,
Environmental factor monitoring unit and environmental factor regulation and control unit；
Environmental factor monitoring unit, various factors in monitoring plant growth environment；
Signal processing unit, according to the data message of environmental factor monitoring unit Real-time Feedback, calls database to compare, and changes
Become LED light source module and environmental factor regulation and control unit index characteristic, reach the real-time monitoring to plant growth environment；
LED light source module, includes LED feux rouges module and LED blue modules；
Environmental factor regulates and controls unit, according to various factors in the command information Regulate Environment that signal processing unit sends, from
And the suitable environment needed for reaching plant growth；
Wherein, LED light source module also includes LED green modules, LED infrared modules and LED ultraviolet modules；
LED green modules, regulate and control green light LED lamp bead brightness, promote the growing way of plant, plant leaf blade coloring aspect especially to show
Write, contribute to plant growth；
LED infrared modules, act on the flowering of plant result stage, adjust the temperature of surrounding plants environment；
LED ultraviolet modules, act on flowering of plant result stage, the effect with sterilizing.
Further, the environmental factor monitoring unit includes CO2Monitoring unit, light quality monitoring unit, temperature monitoring list
Unit and humidity-monitoring unit.
Further, the environmental factor regulation and control unit includes CO2Regulation and control unit, temperature regulation unit and humidity regulation
Unit.
Further, the LED feux rouges module, LED blue modules, the peak wavelength of LED green modules are respectively
650nm-670nm, 440nm-460nm, 510nm-530nm, relative spectral power distribution ratio are 32:4:9；LED is infrared, ultraviolet module
Peak wavelength be respectively 330nm-400nm, 750nm-950nm.
It is an object of the invention to overcome the deficiencies in the prior art, also provide a kind of carries out plant growth lighting with LED
Intelligent control method, comprises the following steps：
1) various factors in environmental factor monitoring unit monitoring plant growth environment；
2) signal processing unit calls database to compare according to the data message of environmental factor monitoring unit Real-time Feedback；
3) signal processing unit controls LED light source module according to after comparison data by PWM control techniques, adjusts LED light
The frequency of the supply current in source, size and dutycycle, so as to regulate and control light quality；
4) signal processing unit sends regulation and control instruction according to after comparison data to environmental factor regulation and control unit, in adjusting ambient
CO2Concentration, temperature and humidity, so as to reach the suitable environment needed for plant growth.
Further, the step 4) in, environmental factor regulates and controls unit by CO2Concentration control is full needed for plant growth
And point, at 20 DEG C -25 DEG C, relative humidity is controlled in 50%-80% temperature control.
Further, the step 3) in, for red, blue, green glow optical module, PWM regulation and control are realized without phase difference, dutycycle
No more than 50%, the power of frequency range 2kHz-5kHz is powered；It is 32 in three's relative spectral power distribution:4:On the premise of 9, plant
The average light quantum flux density that thing is received should be controlled not less than 20 μm of olm-2s-1；When actual photon hypothesis are low
In setting value, improving PWM dimming duty cycles can improve the brightness of LED；When actual photon hypothesis are higher than setting value, drop
Low PWM dimming duty cycles can reduce the brightness of LED, so as to realize the light that red, blue, green relative spectral power distribution and plant receive
The stabilization of quantum flux density, promotes the photosynthetic steady demand of plant；For infrared and ultraviolet optical module, blooming, tying
The specific shots such as fruit action demand stage, realize that without phase difference, dutycycle be the work(of 2kHz-5kHz between 20%-50%, frequency
Rate is powered.
Compared with prior art, this programme has advantages below and beneficial effect：
1) compared to the supplementary lighting sources of the continuous complex spectrum such as traditional fluorescent lamp and high-pressure mercury lamp, this programme is according to plant
The actual conditions that growth needs itself, with reference to PWM control techniques, regulate and control, it is to avoid partial spectrum wave to red bluish-green grade light ratio
Take, reach light filling efficiency higher, it is more energy efficient.
2) green light rays, ultraviolet light and IR are added on the basis of red blue light line needed for photosynthesis of plant；
Green glow helps lend some impetus to the growing way of plant, and plant leaf blade coloring aspect is especially notable；IR regulation surrounding plants environment
Temperature；Ultraviolet light has the effect of sterilizing.
3) on the premise of light needed for providing, it is aided with carbon dioxide, water, temperature, three important elements are comprehensive, more
Growth conditions needed for dimension guarantee plant.
4) monitor whole intellectualized operation, greatly reduce the consumption of manpower.
Brief description of the drawings
Fig. 1 is high-level schematic functional block diagram of the invention；
Fig. 2 is the graph of a relation of dutycycle and intensity of illumination in the present invention；
Fig. 3 is respective different illumination conditions setting schematic diagram in four groups of experiments；
Fig. 4 is PWM regulation flow process schematic diagrames in the present invention；
Fig. 5 is four kinds of growing way situation schematic diagrames of experiment romaine lettuce.
Specific embodiment
With reference to specific embodiment, the invention will be further described：
Referring to shown in accompanying drawing 1, the intelligent controlling device that plant growth lighting is carried out with LED described in the present embodiment, including
Signal processing unit 1, LED light source module 2, environmental factor monitoring unit 3 and environmental factor regulation and control unit 4.
LED light source module 2 includes that LED feux rouges module 2-1, LED blue module 2-2, LED green modules 2-3, LED are infrared
Module 2-4 and LED ultraviolet module 2-5；Wherein, LED feux rouges module 2-1, LED blue module 2-2, LED green module 2-3
Peak wavelength is respectively 650nm-670nm, 440nm-460nm, 510nm-530nm, and light quality ratio should be 32:4:9；LED is infrared,
The peak wavelength of ultraviolet module 2-4,2-5 is respectively 330nm-400nm, 750nm-950nm；And LED infrared modules 2-4, LED are purple
Outer mold piece 2-5 acts predominantly on the necessary stage of plant growth, such as flowering of plant result stage, is tieed up for fruit color and lifting
Raw element C content aspect；Furthermore with the infrared heat effects of LED infrared modules 2-4, the temperature of coordinate plant growth environment；Utilize
LED ultraviolet module 2-5 disinfective actions reach sterilized purpose.
Environmental monitoring unit 3 includes CO2Monitoring unit 3-1, light quality monitoring unit 3-2, temperature monitoring unit 3-3, humidity
Monitoring unit 3-4, realizes the CO to plant growth environment respectively2Concentration, light quality situation, temperature, humidity are sensed and monitored,
So that by real-time Data Transmission to signal processing unit 1.
Signal processing unit 1 receives the data message of environmental monitoring unit 3, the actual conditions according to needed for plant growth
And demand, send instruction to environmental factor regulation and control unit 4.It is topmost, by PWM PWM technologies, adjust LED light source mould
The frequency of the supply current of block 2, size and dutycycle, regulate and control to the light qualities such as red indigo plant ratio in real time.
For LED feux rouges module 2-1, LED blue module 2-2, LED green modules 2-3, PWM regulation and control realize without phase difference,
Dutycycle is not more than the 50%, power of frequency range 2kHz-5kHz and powers.It is 32 in three's relative spectral power distribution:4:9 premise
Under, the average light quantum flux density that plant receives should be controlled not less than 20 μm of olm-2s-1.When actual light quantum flux is close
Degree is less than setting value, and improving PWM dimming duty cycles can improve the brightness of LED, when actual photon hypothesis are higher than setting
Value, reducing PWM dimming duty cycles can reduce the brightness of LED so that adjust photon hypothesis that plant receives and it is red,
Blue, green relative spectral power distribution, promotes the photosynthetic steady demand of plant.
For LED infrared module 2-4, LED ultraviolet module 2-5, blooming, the specific shot action demand stage such as result,
Realize without phase difference, dutycycle between 20%-50%, frequency as the power of 2kHz-5kHz is powered.Changed by PWM control techniques
Variable duty cycle size, so as to adjust LED luminance, and then adjusts the photon hypothesis that plant receives, and promotes flower and fruit
Real quality.
Environmental factor regulation and control unit 4 receives the command information of signal processing unit 1, CO2Regulate and control unit 4-1 by CO2Concentration
Maintain CO needed for actual plant growth2Temperature is maintained 20 DEG C -25 DEG C, humidity by concentration saturation point, temperature regulation unit 4-2
Relative humidity is maintained 50%-80% by regulation and control unit 4-3.
Based on above-mentioned whole implementation strategy mode, should by a kind of intelligent controlling device that plant growth lighting is carried out with LED
With the nurturing research to romaine lettuce, the application process of pwm pulse modulation LED light source is specifically described.
As shown in Fig. 2 pulsewidth modulation (PWM) light modulation be by within the unit interval repeatedly to turn on and off LED positive
Electric current realizes the dimming mode of LED luminance regulation, and dutycycle D illustrates turn-on time ton in a cycle time and accounts for a week
The ratio of phase T, i.e. D=ton/T, wherein cycle T=ton+toff.Control that LED's is bright by controlling the size of dutycycle D
Degree.The relation of implementing is, I (electric current)=DImax.Therefore, romaine lettuce cultivates demand difference of the growth phase to light, Ke Yitong
Cross adjustment dutycycle to adjust LED light intensity, and then cause that the light quantum current density that blade face photosynthesis is received is presented phase
The Changing Pattern answered.
Fast romaine lettuce reliably meets approach very much when numerous residents are tackled to vegetables demand there is provided one.Fast romaine lettuce is main
Refer to leafy vegetable, growth cycle is generally 20-40 days.In experimental stage, we take four groups of romaine lettuce, every group 50, as
Our research object.
After soil adaptation is carried out, four groups of romaine lettuce carry out subarea processing experiment.Four LED of plant growth unit shine
Bright unit, is placed in the height with 2 meters of blade face.The greatest irradiation illumination of every group of light fixture is set to 150W/ ㎡, and irradiation duration sets daily
It is set to 16h.Wherein, the light quality ratio of red, blue, green three is disposed as 32:4:9.
As shown in figure 3, for four groups of illumination conditions of experiment are set.First group is PWM mode, and red, blue, green optical module is same
When power, applying frequency is set to 5kHz, and the phase difference of each wavelength is 0 °；Second group is PWM mode, red, blue, green optical module
Power simultaneously, applying frequency is set to 1kHz, and the phase difference of each wavelength is 0 °；3rd group of PWM mode, red, blue, green optical module
Applying frequency is set to 5kHz, and the phase difference of each wavelength is 120 °；4th group is the continuous fixed mode powered.Every group of Working mould
The average light quantum flux density that romaine lettuce blade face is reached under formula is 20 μm of olm-2s-1。
As shown in figure 4, being the PWM regulation flow process schematic diagrames of the system.System proceeds by initialization, then with each function
Module is attached test.After judgement system is normal, environmental monitoring unit 3 carries out ambient parameter and gathers and store in memory
It is used to call.System sets illumination reference value according to gathered data situation.When actual intensity of illumination is more than illumination setting value, PWM
Regulation reduces dutycycle；When actual intensity of illumination is less than illumination setting value, PWM regulations increase dutycycle.With this, light is reached steady
Determine radiation situation.
As shown in figure 5, be the growing way situation for judging experiment romaine lettuce, from the duration of sample maturity (my god), mature leaf surface
Unit area (㎜2) three aspects of stomata quantity and chloroplast quantity carry out index determining.Made with the pattern four of continuous illumination
It is control group：The ripe duration of pattern one and pattern two has been respectively shortened 16% and 7% or so, and the ripe duration of pattern three but prolongs
Grow 75% or so；In Dan Wei ㎜2Area, the average pore quantity and chloroplast quantity of the blade of pattern one increase 22% respectively
With 18% or so, the average pore quantity and chloroplast quantity of the blade of pattern two increase 12% and 6.5% or so, pattern respectively
Three-vaned average pore quantity and chloroplast quantity have dropped 38% and 33% or so respectively.From blade in appearance, mould
Romaine lettuce blade face under formula one is acted on is more emerald green, and pattern two is taken second place, next to that in the case of the continuous illumination of pattern four, situation is worst
Be romaine lettuce growing way under pattern three.
As can be seen here, suitable pulsewidth light modulation PWM mode is applied to the intelligence control system of plant illumination, to plant growth
There is certain positive facilitation.
The examples of implementation of the above are only the preferred embodiments of the invention, not limit implementation model of the invention with this
Enclose, therefore the change that all shapes according to the present invention, principle are made, all should cover within the scope of the present invention.
Claims (7)
1. a kind of intelligent controlling device that plant growth lighting is carried out with LED, it is characterised in that：Including signal processing unit (1),
LED light source module (2), environmental factor monitoring unit (3) and environmental factor regulate and control unit (4)；
Environmental factor monitoring unit (3), various factors in monitoring plant growth environment；
Signal processing unit (1), according to the data message of environmental factor monitoring unit (3) Real-time Feedback, calls database to compare,
Change LED light source module (2) and environmental factor regulation and control unit (4) index characteristic, reach the real-time monitoring to plant growth environment；
LED light source module (2), including LED feux rouges module (2-1) and LED blue modules (2-2)；
Environmental factor regulates and controls unit (4), according to various factors in the command information Regulate Environment that signal processing unit (1) sends,
So as to reach the suitable environment needed for plant growth；
Wherein, LED light source module (2) also includes LED green modules (2-3), LED infrared modules (2-4) and the ultraviolet moulds of LED
Block (2-5)；
LED green modules (2-3), regulate and control green light LED lamp bead brightness, promote the growing way of plant, and plant leaf blade coloring aspect is especially
Significantly, plant growth is contributed to；
LED infrared modules (2-4), act on the flowering of plant result stage, adjust the temperature of surrounding plants environment；
LED ultraviolet modules (2-5), act on flowering of plant result stage, the effect with sterilizing.
2. a kind of intelligent controlling device that plant growth lighting is carried out with LED according to claim 1, it is characterised in that：
The environmental factor monitoring unit (3) is including CO2Monitoring unit (3-1), light quality monitoring unit (3-2), temperature monitoring unit (3-
And humidity-monitoring unit (3-4) 3).
3. a kind of intelligent controlling device that plant growth lighting is carried out with LED according to claim 1, it is characterised in that：
The environmental factor regulates and controls unit (4) including CO2Regulation and control unit (4-1), temperature regulation unit (4-2) and humidity regulation unit
(4-3)。
4. a kind of intelligent controlling device that plant growth lighting is carried out with LED according to claim 1, it is characterised in that：
The LED feux rouges module (2-1), LED blue modules (2-2), the peak wavelength of LED green modules (2-3) are respectively 650nm-
670nm, 440nm-460nm, 510nm-530nm, relative spectral power distribution ratio are 32:4:9；LED is infrared, ultraviolet module (2-4,
Peak wavelength 2-5) is respectively 330nm-400nm and 750nm-950nm.
5. a kind of intelligent control method for carrying out plant growth lighting described in claim 1 with LED, it is characterised in that：Bag
Include following steps：
1) various factors in environmental factor monitoring unit monitoring plant growth environment；
2) signal processing unit calls database to compare according to the data message of environmental factor monitoring unit Real-time Feedback；
3) signal processing unit controls LED light source module according to after comparison data by PWM control techniques, adjustment LED light source
The frequency of supply current, size and dutycycle, so as to regulate and control light quality；
4) signal processing unit sends regulation and control instruction according to after comparison data to environmental factor regulation and control unit, the CO in adjusting ambient2
Concentration, temperature and humidity, so as to reach the suitable environment needed for plant growth.
6. a kind of intelligent control method that plant growth lighting is carried out with LED according to claim 5, it is characterised in that：
The step 4) in, environmental factor regulates and controls unit by CO2Concentration is controlled in the saturation point needed for plant growth, and temperature control is 20
DEG C -25 DEG C, relative humidity is controlled in 50%-80%.
7. a kind of intelligent control method that plant growth lighting is carried out with LED according to claim 5, it is characterised in that：
The step 3) in, for red, blue, green glow optical module, PWM regulation and control are realized being not more than 50%, frequency model without phase difference, dutycycle
The power for enclosing 2kHz-5kHz is powered；It is 32 in three's relative spectral power distribution:4:On the premise of 9, the average light quantity that plant receives
Sub- flux density should be controlled not less than 20 μm of olm-2s-1；When actual photon hypothesis are less than setting value, improve PWM and adjust
Light dutycycle can improve the brightness of LED；When actual photon hypothesis are higher than setting value, reducing PWM dimming duty cycles can
To reduce the brightness of LED, so as to realize the steady of the photon hypothesis that red, blue, green relative spectral power distribution and plant receive
It is fixed, promote the photosynthetic steady demand of plant；For infrared and ultraviolet optical module, blooming, the specific shot action such as result
Demand stage, realize that without phase difference, dutycycle be 20%-50%, frequency is for the power of 2kHz-5kHz is powered.
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| CN201710107321.5A CN106922414A (en) | 2017-02-27 | 2017-02-27 | A kind of intelligent controlling device and method that plant growth lighting is carried out with LED |
| PCT/CN2017/086621 WO2018152980A1 (en) | 2017-02-27 | 2017-05-31 | Intelligent control device and method for performing plant growth lighting by using leds |
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