CN101251241A - Method for combining LED with homogeneous proportion of red blue light as well as module thereof - Google Patents
Method for combining LED with homogeneous proportion of red blue light as well as module thereof Download PDFInfo
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- CN101251241A CN101251241A CNA2007101648346A CN200710164834A CN101251241A CN 101251241 A CN101251241 A CN 101251241A CN A2007101648346 A CNA2007101648346 A CN A2007101648346A CN 200710164834 A CN200710164834 A CN 200710164834A CN 101251241 A CN101251241 A CN 101251241A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000005286 illumination Methods 0.000 abstract description 73
- 238000009826 distribution Methods 0.000 abstract description 17
- 230000004907 flux Effects 0.000 abstract description 7
- 230000029553 photosynthesis Effects 0.000 abstract description 6
- 238000010672 photosynthesis Methods 0.000 abstract description 6
- 238000009827 uniform distribution Methods 0.000 abstract 1
- 241001025261 Neoraja caerulea Species 0.000 description 26
- 239000002131 composite material Substances 0.000 description 16
- 238000013461 design Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 5
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- 238000005755 formation reaction Methods 0.000 description 5
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- 230000008635 plant growth Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 244000037666 field crops Species 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001002 morphogenetic effect Effects 0.000 description 1
- 238000004161 plant tissue culture Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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Abstract
The present invention discloses a light emitting diode combining method enabling uniform proportion between red light and blue light. Firstly, selecting single LED, an extra-bright circular lamp with a half-value angle of 7 degrees, a diameter of 5 mm and a wavelength of 636 nm is selected for the red light LED; an extra-bright circular lamp with a half-value angle of 7 degrees, a diameter of 5 mm and a wavelength of 459 nm is selected for the blue light LED; secondly, eight LEDs are arranged on each line and each row, and each red LED and each blue LED are evenly arranged at intervals, the surrounding of each LED are LEDs with the other color, the spacing between two adjacent LEDs is no more than 2.5 mm, 64 LEDs with the arranging manner form a 8x8 array to be arranged on a circuit board so as to be made into a light emitting diode combining module, and the module is used as a unit module which can be assembled or expanded longitudinally and/or transversely according to needs, and the uniformity of the distribution of the ratio R/B between the red light and blue light photons flux is not changed. The method is suitable for being used as light source for photosynthesis of plants in a greenhouse and being an illumination light source for plant factories. The method has the advantages of convenient mounting, replacing, assembly and expansion, and uniform distribution of R/B ratio.
Description
Technical field
The present invention relates to a kind of red light-emitting diode and blue light-emitting diode and be combined into uniform aligning method of proportion of red blue light and module thereof.
Background technology
Because emission wavelength just in time is complementary with the spectral region of photosynthesis of plant, red, blue light-emitting diode (LED) can be used for illumination, light filling and the form of plant to be regulated.Compare with traditional artificial light source, red, blue light-emitting diode has numerous advantages such as energy consumption is low, life-span length, cold light type, reaches its maturity as the novel artificial light source in plant factor and greenhouse.Scientific research shows that suitable ruddiness is shone the sound assurance of phytomorph with the ratio R/B of blue light light quantum flux.As the artificial light source that plant production is used, require to comprise morphogenetic red, the blue spectrum balance of light of appropriateness.Illumination on the plant plane of illumination reaches certain intensity, and proportion of red blue light is evenly distributed, and is the necessary condition of producing high-quality plant.Through the photosynthesis tracing analysis to 26 kinds of herbaceous plant, 7 kinds of xylophytas, 8 kinds of field crops and 20 kinds of artificial meteorological office crops, the comprehensive average out to 1.84 of the ratio of its R/B.As everyone knows, plant does not generally have net photosynthesis below illumination 2000 luxs (lx).Even so the LED of super brightness, single illumination still is not enough to supply with under it plant normal growth at 10cm place and grows.In addition, single LEDs exists the limited shortcoming in field of illumination.Therefore, need many red, blue-ray LEDs to be combined into to have certain intensity of illumination on the illumination reference planes, the module of reasonable and equally distributed R/B, it is convenient to require the module assembly unit to expand simultaneously.
Yet how the LED composite module of design ideal is not seen special document announcement.But in relating to the device of plant growth, some have used led module.Through patent retrieval, CN2438321 has announced " is the plant cultivating device of light source with the light emitting diode " patented technology of Taiwan Mr. Fang Wei design, and distribution red on its used module, blue-ray LED is three of every capable high light type red-light LEDs, and the triplex row meter is nine altogether; Two of the every row of blue-ray LED, totally two row meters are four; Delegation is red, delegation is blue is spaced.Obviously, the led module of Pai Lieing is suitable for plant tissue culture because LED the less intensity of illumination that causes of number is limited like this; The distribution of R/B in the time of can destroying single module when secondly, this module assembly unit is expanded.CN1322806 has announced South China Normal University's " device of plant growth is penetrated in illumination " patented technology, and light emitting diode is 6 asymmetric arrangements of totally 8 row of every row in its module, splicing, expansion inconvenience.The CN1246913 patent has also been announced the composite module that Japanese CCS Inc. red, green, blue three monochromes are embarked on journey one by one at interval separately, every row 13 LEDs are arranged.Mode is a lot, and is numerous, by separately to stress face different and design, as seen in LED composite module field, still lack the optimal design at module itself of specialty.
In recent years, it is that delegation, per 8 blue-ray LEDs are another row that the Taiwan industry adopts per 8 red-light LEDs, four lines separately at interval one by one, and 8 * 8 square formation LED composite modules of totally 8 row 8 row are with the scheme of calling in the following text.This prior art makes the illumination in the field of illumination be significantly improved than above-mentioned preceding two patents, but the uniformity that R/B distributes is still not satisfactory.Preferably 8 * 8 square formations are carefully and neatly done, symmetrical, and the one group is eight bits, and the bit group unit coupling with commonly used on the computer information helps the design of automatic control on the engineering; Carefully and neatly done square formation module with symmetry also helps Fast Installation, replacing and assembly unit, and the R/B distribution remains unchanged after the assembly unit.
Summary of the invention
Above-mentioned deficiency at prior art, the purpose of this invention is to provide a kind of maintenance 8 * 8 square formations, still carefully and neatly done and symmetry, every group are that to help eight bits, installation and replacing and the assembly unit of computer auto-control Design quick, and the homogenising degree that assembly unit expansion back R/B ratio distributes is constant, and throw light on the reference planes in the field of illumination in 10cm place under it, and illumination reaches certain intensity and R/B has more equally distributed LED combined method and module thereof.
Above-mentioned purpose can realize by following measure:
The uniform light emitting diode combined method of this proportion of red blue light is to take following two measures:
(1) selection of single light emitting diode: select 7 ° of half-value angles, diameter 5mm, wavelength 637nm, bandwidth 12nm, luminous intensity is the super brightness red-light LED circle lamp of 23.5 candelas (cd) under standard operation electric current 10mA, select 7 ° of half-value angles, diameter 5mm, wavelength 459nm, bandwidth 16nm, luminous intensity is the super brightness blue-ray LED circle lamp of 6cd under standard operation electric current 20mA;
(2) setting of compound mode: row and column is 8 LED that select by aforementioned requirement, and red, blue-ray LED is evenly distributed at interval one by one, must be the LED of another coloured light around each LED, the spacing of adjacent two LEDs is less than or equal to the radius of single LEDs circle lamp.
The uniform light emitting diode combined module of this proportion of red blue light, form by red light-emitting diode 1, blue light-emitting diode 3, circuit board 2 and connecting line, with 8 * 8 red, blue-ray LED circle lamps is a modular unit, red, blue light-emitting diode circle lamp respectively is 32, every row, every row are 8 LEDs, and red, blue light-emitting diode is matrix one by one at interval and arranges, except that the ranks of surrounding, around every light emitting diode is four heterochromatic light emitting diodes, and the spacing of adjacent two light emitting diodes is less than or equal to the radius of single light emitting diode.
Above-mentioned purpose also can be perfect by following measure:
The uniform light emitting diode combined module of this proportion of red blue light is classified one group as with per two, current-limiting resistance R1 is inserted in the blue-ray LED back that is connected in series, current-limiting resistance R2 is inserted in the red-light LED back that is connected in series, R1=360~2.4k ohm, R2=510~3.3k ohm provides operating voltage by a D.C. regulated power supply for the blue-ray LED of the red-light LED of each series connection and each series connection again.
The invention has the beneficial effects as follows carefully and neatly done, the symmetrical characteristics of 8 * 8 square formations that keep, help the computer design of control automatically, installation, replacing and assembly unit are quick, and the homogenising degree that assembly unit expansion back R/B ratio distributes is unaffected, and has more equally distributed R/B ratio in the field of illumination.
Description of drawings
Fig. 1 is red, the compound mode schematic diagram of blue-ray LED in a composite module unit of the present invention.
Fig. 2 expands the mode schematic diagram for four composite module unit splicings of the present invention.
Fig. 3 and Fig. 4 are respectively adjacent two LED spacings illumination contour distribution map of the ruddiness in the field of illumination, 10cm place, blue light, dichromatism mixed light under composite module unit when being zero-sum 2.5mm, wherein (a) and (b) and (c) be ruddiness, the blue light of scheme one in the prior art, the illumination contour distribution map of dichromatism mixed light; (d), (e) and (f) be the illumination contour distribution map of ruddiness of the present invention, blue light, dichromatism mixed light.
Fig. 5 is the red blue light light quantum flux ratio distribution map in the field of illumination, 10cm place under the composite module unit, wherein (a) and (b) when being zero for adjacent two LED spacings in the prior art scheme one laterally, vertical distribution map; (c) and (d), (e) and (f) be respectively when adjacent two LED spacings are zero-sum 2.5mm among the present invention laterally, vertical distribution map.
Fig. 6 is the circuit structure diagram of a composite module unit of the present invention.
The specific embodiment
The present invention is described in detail below in conjunction with embodiment and with reference to accompanying drawing: Fig. 1 is that row, column is 8 LEDs and red, the blue-ray LED structural representation of an equally distributed modular unit at interval one by one.Red light-emitting diode 1 and blue light-emitting diode 3 are installed on the circuit board 2, and back of circuit board is a connecting circuit, and the structure of circuit as shown in Figure 6.Because of red-light LED different with the drive current of blue-ray LED, so classify one group as with per two, current-limiting resistance R1 is inserted in the blue-ray LED back that is connected in series, current-limiting resistance R2 is inserted in the red-light LED back that is connected in series, R1=360~2.4k ohm, R2=510~3.3k ohm provides operating voltage by a D.C. regulated power supply for the blue-ray LED of the red-light LED of each series connection and each series connection again.Regulate R1 to 1.2k ohm, R2 to 3.3k ohm, make red, blue-ray LED be operated in normalized current 10mA and 20mA respectively.32 on the super brightness red-light LED circle lamp that select 7 ° of half-value angles, diameter 5mm, wavelength 637nm, bandwidth 12nm, luminous intensity is 23.5cd under standard operation electric current 10mA, 32 on the super brightness blue-ray LED circle lamp that select 7 ° of half-value angles, diameter 5mm, wavelength 459nm, bandwidth 16nm again, luminous intensity is 6cd under standard operation electric current 20mA is combined into a modular unit shown in Figure 1.Select half-value angle red, blue-ray LED to be 7 °, diameter and be 5mm, its objective is that the directive property height, the intensity of illumination that make illumination can satisfy the required of photosynthesis of plant.The uniformity that proportion of red blue light distributes among the present invention describe below with the comparison diagram that calculates and the substitution corresponding data makes for ease of understanding and confirming.
Because red, blue-ray LED is a cold light source, the plant of can closely throwing light on, with 10cm place under red, the blue-ray LED composite module unit as the reference planes of throwing light on.The diameter of LED is 5mm, and LED is 10cm with the vertical interval of illumination reference planes, so each LED all can be considered a spot light.The intensity of illumination of every bit can calculate according to square rule of falling of spot light on the illumination reference planes, and concrete calculation procedure is as follows:
At first, use LED light intensity angle measurement instrument and measure the luminous intensity I of LED and depart from dependence between LED positive normal angle θ, the gained data are carried out statistical regression, obtain relative intensity-angle regression equation red, blue-ray LED and be
Exp (.) is an exponential function in the formula.The degree of correlation of measurement data and above-mentioned regression relation is r
2=0.9999.
Secondly, the field of illumination of LED composite module unit in the illumination reference planes is S=(7L+8.12)
2Cm
2When the spacing L of adjacent two LED is respectively 0 and during 2.5mm, light area area S is approximately 70cm
2And 99cm
2So the illumination zoning is taken as the square of 9cm * 9cm and 10cm * 10cm respectively, and the calculating Region Segmentation of will throwing light on is 100 * 100 point of observation dot matrix.
The 3rd, each LED all has a geometric projection in red, the blue-ray LED composite module unit on the illumination reference planes, arbitrary point of observation and these 64 geometric projection centers apart from d on the illumination reference planes
j(unit is cm) can try to achieve.The cosine of the line of each LED and vertical direction angulation by the right angled triangle relation is as can be known in this point of observation on the illumination reference planes and the LED composite module unit
And then definite each LED is with respect to the visual angle of this point of observation.
The 4th, more than or equal to 13.2 °, corresponding LED is zero to the illumination contribution nature of this point of observation as if this angle; If this angle is less than 13.2 °, can calculates red accordingly, blue-ray LED the illumination contribution of this point of observation on the illumination reference planes is respectively according to square rule of falling of relative intensity-angle regression equation and spot light
With
Then, respectively all red, blue-ray LED are added up the illumination contribution summation of this point of observation, obtain the ruddiness illumination E on this point of observation
RWith blue light illumination E
RRuddiness illumination and blue light illumination sum are the dichromatism mixed light illumination on this point of observation.
At last, according to red, the illumination of blue-ray LED and the unit transformational relation between the light quantity subnumber, calculate the ratio R/B=0.48E of ruddiness and the light quantum flux of blue light on this point of observation
R/ E
B
All 100 * 100 points of observation are carried out identical operations, just can obtain LED composite module unit ruddiness illumination, blue light illumination, dichromatism mixed light illumination and R/B distribution map in the field of illumination on the illumination reference planes, as Fig. 3, Fig. 4 and shown in Figure 5.The scope of each subgraph is 9cm * 9cm among Fig. 3; The scope of each subgraph is 10cm * 10cm among Fig. 4.(a) among Fig. 3 and (b) showing that red, blue illumination in the prior art scheme one is regional has a skew, from red, blue light center, field of illumination separately outward, illumination is successively decreased successively.(c) among Fig. 3, (d), (e) and (f) show that intensity of illumination outwards is the rule that weakens gradually from the center have reflected under the constant prerequisite of dichromatism mixed light Illumination Distribution, and be red among the present invention, blue light illumination is improved oneself and weak position is synchronous.(a) and (b) among Fig. 3 and (c), the contrast of (d), can illustrate that the present invention has corrected red, the position skew that blue light illumination changes synchronously in the prior art scheme one.(a) and (b) among Fig. 4, (c), (d), (e) and (f) except that explanation the present invention has corrected red, position skew that blue light illumination changes synchronously in the prior art scheme one, the spacing increase that also shows adjacent two LED will cause illumination to descend, the homogenising degree of illumination makes moderate progress in the ZhaoMing Center zone, but the spacing of adjacent two LED of illumination requirement of dichromatism mixed light 2000lx can not surpass 2.5mm.Each corresponding subgraph among comparison diagram 3 and Fig. 4 causes illumination to descend though can find the increase of adjacent two LED spacings, the homogenising degree of illumination, has also enlarged lighting area in improving the ZhaoMing Center zone.
(a) among Fig. 5 and (b) for the R/B of prior art scheme one when adjacent two LED spacings are zero laterally, vertical distribution map; (c) and (d) for the R/B of the present invention when adjacent two LED spacings are zero laterally, vertical distribution map; (e) and (f) for the R/B of the present invention when adjacent two LED spacings are 2.5mm laterally, vertical distribution map.Fig. 5 has reflected that the R/B of scheme one laterally being the ligulate distribution substantially, is vertically totally progressively increasing from left to right; And R/B is in horizontal and vertical regularity of distribution unanimity among the present invention, and the suitable increase of adjacent two LED spacings has enlarged lighting area not having obviously to worsen under the prerequisite of being evenly distributed of R/B degree; The homogenising degree that R/B distributes among the explanation the present invention of contrast back has clear improvement than prior art scheme one, and ratio is medium, suitable regulation and control.
The light quantum flux measuring head of utilization illumination photometer and photosynthesis measurement instrument is to the measurement of ruddiness illumination, ruddiness light quantum flux, blue light illumination and the blue light light quantum flux of multiple spot in the field of illumination, 10cm place under red, the blue-ray LED composite module unit, find that experiment measuring value and calculated value meet better basically identical.
In sum: the present invention is because the synchronism of red, blue light illumination change position, makes that on the illumination reference planes R/B is more evenly distributed in the field of illumination; Cause illumination to descend though suitably increase the spacing of adjacent two LED, improved the homogenising degree of illumination in the ZhaoMing Center zone, also enlarged lighting area.It should be noted that the spacing of adjacent two LED of illumination requirement of dichromatism mixed light 2000lx can not surpass the radius of single LEDs circle lamp.Need to prove: illumination and the R/B of LED composite module of the present invention unit on the illumination reference planes is not changeless, can be regulated and control its illumination and R/B by the operating current of regulating ruddiness and/or blue-ray LED, to adapt to the variety classes cultivation of plants.
Claims (3)
1, the uniform light emitting diode combined method of a kind of proportion of red blue light is characterized in that taking following two measures:
(1) selection of single light emitting diode: select 7 ° of half-value angles, diameter 5mm, wavelength 637nm, bandwidth 12nm, luminous intensity is the super brightness red light-emitting diode circle lamp of 23.5 candelas under standard operation electric current 10mA, select 7 ° of half-value angles, diameter 5mm, wavelength 459nm, bandwidth 16nm, luminous intensity is the super brightness blue light-emitting diode circle lamp of 6 candelas under standard operation electric current 20mA;
(2) setting of compound mode: row and column is 8 light emitting diodes of selecting by aforementioned requirement, and red, blue light-emitting diode is evenly distributed at interval one by one, around each light emitting diode must be the light emitting diode of another coloured light, and the spacing of adjacent two light emitting diodes is less than or equal to the radius of single light emitting diode circle lamp.
2, the uniform light emitting diode combined module of a kind of proportion of red blue light, by red light-emitting diode 1, blue light-emitting diode 3, circuit board 2 and connecting line are formed, red with 8 * 8, blue light-emitting diode circle lamp is a modular unit, it is characterized in that red, blue light-emitting diode circle lamp respectively is 32, every row, every row are 8 light emitting diodes, and it is red, blue light-emitting diode is matrix one by one at interval and arranges, except that the ranks of surrounding, around every light emitting diode is four heterochromatic light emitting diodes, and the spacing of adjacent two light emitting diodes is less than or equal to the radius of single light emitting diode.
3, the uniform light emitting diode combined module of proportion of red blue light as claimed in claim 2, it is characterized in that classifying one group as with per two, current-limiting resistance R1 is inserted in the blue light-emitting diode back that is connected in series, current-limiting resistance R2 is inserted in the red light-emitting diode back that is connected in series, R1=360~2.4k ohm, R2=510~3.3k ohm provides operating voltage with a D.C. regulated power supply for the blue light-emitting diode of the red light-emitting diode of each series connection and each series connection again.
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2010135866A1 (en) * | 2009-05-27 | 2010-12-02 | Zhao Jie | Led illumination device and method for manufacturing the same |
DE102010004042A1 (en) | 2010-01-05 | 2011-07-07 | Sommer, Andreas, 63500 | LED lamp i.e. plant light, for promoting growth of biological system i.e. aquarium, has light sources i.e. LEDs, with predetermined characteristics of emitted wavelengths, which lie at spectral range between specific ranges |
CN101852368B (en) * | 2010-01-28 | 2011-07-27 | 杭州汉徽光电科技有限公司 | LED blended-light lamp used for tissue culture of orchids |
CN102144548A (en) * | 2011-01-01 | 2011-08-10 | 司红康 | Plant tissue culture shelf and light supplement method thereof |
CN101816270B (en) * | 2009-02-27 | 2012-01-25 | 张一熙 | Greenhouse or agriculture canopy with thin-film solar cells |
CN102210239B (en) * | 2009-12-30 | 2012-08-01 | 洁源(马)有限公司 | Plant growth adjusting lamp |
CN103343895A (en) * | 2013-06-25 | 2013-10-09 | 苏州科利亚照明科技有限公司 | Plant light supplementing lamp emitting red light and blue light |
-
2007
- 2007-12-25 CN CN200710164834A patent/CN100587326C/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101816270B (en) * | 2009-02-27 | 2012-01-25 | 张一熙 | Greenhouse or agriculture canopy with thin-film solar cells |
WO2010135866A1 (en) * | 2009-05-27 | 2010-12-02 | Zhao Jie | Led illumination device and method for manufacturing the same |
CN102210239B (en) * | 2009-12-30 | 2012-08-01 | 洁源(马)有限公司 | Plant growth adjusting lamp |
DE102010004042A1 (en) | 2010-01-05 | 2011-07-07 | Sommer, Andreas, 63500 | LED lamp i.e. plant light, for promoting growth of biological system i.e. aquarium, has light sources i.e. LEDs, with predetermined characteristics of emitted wavelengths, which lie at spectral range between specific ranges |
CN101852368B (en) * | 2010-01-28 | 2011-07-27 | 杭州汉徽光电科技有限公司 | LED blended-light lamp used for tissue culture of orchids |
CN102144548A (en) * | 2011-01-01 | 2011-08-10 | 司红康 | Plant tissue culture shelf and light supplement method thereof |
CN103343895A (en) * | 2013-06-25 | 2013-10-09 | 苏州科利亚照明科技有限公司 | Plant light supplementing lamp emitting red light and blue light |
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