led

LED is applied to the research of plant facilities cultivation Decade come, our country the facilities half-hardy area development is quick, plant growth of the aureole territory control lighting the technique have already caused a value.Facilities horticulture's illuminating a technique is mainly applied to 2:A, little in the amount of sunshine or the sunshine is a plant photo-synthesis to add lighting when time is short;Two, is a plant light period, light the appearance Be finished of induce lighting. 1, LED is a plant photo-synthesis to add illuminative of the research traditional artificial light source produces too many calorieses, such as adoption LED drink lighting and water Pei system, the air can be circulated usage, excessive calories and water can be moved in addition to, electric power can drive efficiently change into effectively simply matching radiation finally conversion is plant material.Study enunciation:Adopt LED lighting, fresh vegetable growth velocity, only match velocities to all raise above 20%, useding for LED the plant factory is viable. The research discovers that compared with the fluorescent lamp, the LED light source of mixture wave-length can show the Zhao promotes spinach, turnip and fresh vegetable of growth growth, raise appearance index sign;Can make the sugar beet living creature amount of backlog biggest, the sugar beet plain backlog shows Zhao most in the hair root, and produce the tallest sugar and starch backlog in the hair root. Stew with metal to turn a light to compare, growth while matching wave-length LED of pepper, purple Su's plant, its caulis, leaf of the anatomy appearance occurrence show the variety of Zhao, and along with light density exaltation, the light of plant matches a velocity exaltation.LED that reunites a wave-length can cause ten thousand life chrysanthemum and sage two kinds of pore numbers of plants increasing. 2, LED is a plant light period, light the appearance Be finished of induce lighting LED of particular wave-length can influence vegetative efflorescence time, quality and flower period to keep on time.LED of some wave-lengths can raise vegetative flower bud number and bloom a number;LED of some wave-lengths can lower into a flower reaction, adjusted to control flower stalk length and flower period, was advantageous to cut flowers production and become available in the market.From this adjust to control the efflorescence and subsequent growth that can adjust to control a plant through LED. 3, LED Be applied to aerospace ecosystem to living the research of protecting the system The establishment is controled ecosystem to living to protect system(Controlled Ecological Life Support System, CELSS) is solve to carry a person over a long period of time aerospace life guarantee problem of root path, the cultivation of Gao Deng's plant is a CELSS important component, it a light of the key shine on. According to the special request of space environment, space Gao Deng uses in the plant cultivation of the light source have to have to give out light efficiency Gao, output's light wave suitable for plant photo-synthesis and appearance Be finished, small physical volume and light weight and long life span and high safe and dependable sex record and have no pollution of the environment etc. characteristics.Compared with the cold white fluorescent lamp, the high pressure sodium other light sources, such as light and metal halogen lamp...etc., LED can even availably can convert the light only match effective radiation;In addition, it has life span long, small physical volume, weight lightly and present a solid etc. characteristics, therefore, educate in ground and space plant in recent years in doubly is valued.The research expresses LED illuminates system to provide spectrum energy to distribute even lighting, its electric power conversion is the bare efficiency that plant needs exceed the gold stew 520 times that of light.

LED educates a medium application in the plant The aureole territory is one of the important physical environment factors that the plant grows to develop indispensability and pass light the quality regulates and control the plant appearance is built up is an important technique that the facilities educates realm. As the fourth generation new lighting light source, LED has many characteristicses(table 1) that differ from other lightning sources, this also makes it become the head that economizes on energy environmental protection light source to choose.LED that is applied to plant development realm still expresses a following characteristic:The wave-length type enriches, at the right moment only synthesize with plant and light the appearance is finished of the spectrum scope fit together;Frequency chart wave width half the breadth is narrow, can according to needing to combine to acquire pure and unadulterated monochrome light and compound spectrum, ;The light balanced earth shine that can concentrate a particular wave-length shoots farm crop;The nourishment composition that can not only regulate farm crop efflorescence and burliness, but also can also control stub Gao and plant;The system has fever little, take up space small, can used for many layers to educate stereoscopic combination system, carried out low hot burden and production space small scaled turn;In addition, it especially the strong enduring also lowered movement cost.Because of these characteristics that show Zhao, LED pretty much suit Be applied to can control plants cultivation in the facilities environment, turn to teach seedling and aerospace ecosystem to living to protect system such as the plant tissue culture, facilities horticulture and factory etc..

Why do the floodlights all adopt three radicle colors now LED(Light-Emitting-Diode Chinese meaning for give out light diode) is 1 kind to convert electric power for it is thus clear that bare semi-conductor, it changed the incandescent lamp Wu silky hair light and economy energy light three radicle colors the powder give out light of principle, but adopt electric field to give out light.According to the analysis, LED characteristics very obvious, life span long, radiation Gao, have no radiation with low achievement consume.The LED spectrum is more almost all concentrated than it is thus clear that segment only and repeatedly, it gives out light an efficiency to reach to 80~90%.Economize on energy LED and common incandescent lamp, helix light and T5 three radicle color the fluorescent lamp carry on contrast and show as a result:The radiation of the common incandescent lamp is a 12 lms/W, the life span is small in 2000 hours, the radiation of the spiral economy energy light is a 60 lms/W, the life span is small in 8000 hours, T5 fluorescent lamps then is 96 lms/Ws, life span about 10000 hours, but the diameter is 5 millimeters of white lights LED is a 20~28 lms/W, the life span is big in 100000 hours.Someone also predicts that future LED life span upper limit will infinity. In recent years, car shape because of design up of the need of request and beauty of demand, aerodynamicist, the low on the side flows the shape of line form more and more popular.The shape of tail lamp also turns toward the different type with integral whole to turn a development.The car LED light can is divided into to go together with light to use light and lampion 2 kinds according to the application and go together with a light light to be applicable to an appearance indicator to carry on the back only show and turn a light, put on brakes an indicator, reverse the car a light, fog lamp and read a light before or after etc. function;The decoration lamp mainly useds for the car light color transformation and there is outside inside the car beautifying a function.Descends along with bright degree the solution and cost of problem of part of vehicle-use LEDs for the last few years, it the amount of application has a growth.The domestic is familiar: the this farmland graceful Ge and day produce sounds of nature, royal crown, firm determination, Caddy series, don't gram the glory resist etc.s all have already adopted LED tail lamp. Compare with with traditional lamp bulb, LED superiority it is been placed in to: ·order bright don't delay, responded to time sooner, the traditional Bo hull lamp bulb then had 0.3 to delay and prevent°from making track for tail ·stronger anti-vibration ability ·give out light a pure degree Gao, have never needed a lampshade to filter light, the light wave long error margin at 10 Na rices in ·giving out light calories is very small, isn't very high to the heat-proof sex request of lamp material ·light beam concentration, much easier than control, and don't need to gather light with the glint machine, be advantageous to the depth that lets up a lamp ·consuming electricity quantity is low and consume electricity quantity just for 6% of traditional lamp bulb while attaining the giving out light of traditional lamp bulb equal bright degree and save electricity stanza oil ·super longevity life, has no light silk the structure don't have fever, normal usage at more than 6 years ·the vehicle control electric circuit doesn't easily oxidize

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