CN105098037A - Communication and lighting multiplex LED lamp - Google Patents
Communication and lighting multiplex LED lamp Download PDFInfo
- Publication number
- CN105098037A CN105098037A CN201510484678.6A CN201510484678A CN105098037A CN 105098037 A CN105098037 A CN 105098037A CN 201510484678 A CN201510484678 A CN 201510484678A CN 105098037 A CN105098037 A CN 105098037A
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- Prior art keywords
- light
- glass
- infrared
- communication
- led lamp
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/56—Materials, e.g. epoxy or silicone resin
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/505—Wavelength conversion elements characterised by the shape, e.g. plate or foil
Abstract
The invention discloses a communication and lighting multiplex LED lamp. The LED lamp comprises two functions, wherein one of the functions is white-light lighting, and the other function is being used as a transmitting terminal of infrared communication. As to the function of lighting, one or more types of rare earth ions such as Dy3+, Sm3+, Tb3+, Eu3+, Eu2+, Ce2+, Tm3+, Ho3+ and the like and transition metal ions such as Mn2+, Sn4+ and the like are taken as an active luminescence center, glass or transparent glass ceramic is taken as a base material, and fluorescent light is excited to be emitted through an ultraviolet or a blue LED chip. The infrared communication transmitting terminal takes an infrared LED chip which is suitable for being used as a short-range wireless infrared communication channel (800nm-1000nm waveband) as a signal emission source, modulated pulses are loaded to a driving circuit of the infrared LED chip, then electric signals are converted into wireless optical signals, and transmission and delivery of information are carried out. The LED lamp disclosed by the invention has the advantages of low preparation cost, good stability, large modulation bandwidth, high modulation power, long service life and small size.
Description
Technical field
The invention belongs to LED and communications applications field thereof, be specifically related to the visible illumination of LED and infrared light wireless communication system and device thereof.
Background technology
In recent years, along with the develop rapidly of semiconductor technology, the visible light communication thrown light on based on LED (LightEmittingDiode, light-emitting diode) have also been obtained fast development as a kind of wireless access technology.It is advantageous that and directly can utilize existing illuminating LED device, realize illumination and the unification communicated, thus realize the saving of resource and widening communication spectrum.But its communication system is ripe not enough, uplink and downlink communication agreement is difficult to unified, and the job stability of current LED still needs to improve, and therefore, research and development have highly compatible, the communication of high stability, illumination sequentially pulsed LED lamp have great importance.
Infrared Wireless Communication technology is the founder of short range wireless transmission technology, has possessed comparatively ripe communication system at present.Infrared Wireless Communication adopts infrared ray as wireless transmission carrier, and it mainly contains following advantage: (1) bandwidth ratio is wider, can provide higher data rate as communications carrier.(2) meet opaque article can not pass through, good confidentiality.(3) not by the electromagnetic interference of spatial high-frequency.(4) power consumption is low relative to visible ray.Further, infrared communication cost is low and have compatible widely, easy to use, economical and practical.But infrared communication system conduct independently architectural study always, also could not utilize the trend of LED illumination at present.Therefore, if Infrared Wireless Communication is combined with LED illumination can have higher environment protection.
In addition, the visible light communication LED of current use is mainly blue chip and excites yellow fluorescent powder, wherein, using the blue light obtained by electro-optic conversion as communication band.Therefore, while communication, must ensure that blue-light LED chip is in the state always lighted.But along with the growth of LED chip lighting time, chip temperature raises, and the heat produced by chip is delivered to fluorescent material and fluorescent glue, causes the quantum efficiency of fluorescent material to reduce gradually, makes LED luminous efficiency decay.For solving the problem, substituting blue light except adopting infrared light is except communication band, and a series of glass fluorophor is also developed.Compared with organic bond composite phosphor, glass fluorophor has more excellent light, thermal stability, and glass fluorophor cost is low, concise in technology, environmental protection, luminous efficiency is high, easy encapsulation, combine with the illumination of LED, greatly enhance the useful life of LED, there is important economic worth.
Summary of the invention
Technical problem: the object of the invention is to, by the combination of infrared light radio communication and LED illumination and glass fluorophor to the replacement of organic composite fluorescent material, solves the restrictions such as the compatibility existed in current VCL visible ray radio communication is low, poor stability.
Technical scheme: the present invention is a kind of communication, illumination sequentially pulsed LED lamp is the integrated of a kind of preparation of glass white luminophor, Infrared Wireless Communication technology and infrared light radio communication and LED illumination System.This LED comprises substrate, drive circuit, white light illumination module, infrared communication module; Drive circuit acts on white light illumination module and infrared communication module respectively.
Communication of the present invention, illumination sequentially pulsed LED lamp, central authorities on substrate are provided with several LED substrates, the LED substrate of illuminating white-light illuminating fluorophor is provided with blue light or purple light chip is coated with transparent phosphor on blue light or purple light chip, be respectively equipped with positive pole, negative pole in the both sides of LED substrate, be provided with illumination drive circuit on the side of negative or positive electrode; The LED substrate of communication is provided with infrared chip, infrared chip is coated with transparent phosphor, is respectively equipped with positive pole, negative pole in the both sides of LED substrate, be provided with communication drive circuit on the side of negative or positive electrode; Protective cover covers above-described each parts, forms a complete communication, throw light on sequentially pulsed LED lamp.
Wherein:
Drive circuit: the drive circuit for white light illumination module is simple constant current mode drive circuit, and is the high-frequency constant streaming drive circuit comprising modulating unit for the drive circuit of infrared communication module.
White light illumination module: the drive circuit being used for white light illumination module is connected with ultraviolet or blue-light LED chip, and covers white-light illuminating fluorophor on chip.
Infrared communication module: the drive circuit being used for infrared communication module is connected with infrared LED chip.
Described white-light illuminating fluorophor with one or more rare earth ions and transition metal ions for active fluoro center, with unorganic glass or transparent glass ceramics for host material, under the excitation of purple light or blue-light LED chip, white-light illuminating fluorophor can monochromatic, double-colored or three coloured light of stimulated emission, are mixed into white light;
Described infrared communication transmitter module is to be used as the infrared LED chip of near radio infrared communication channel 800nm-1000nm wave band for signal emitting-source, by drive circuit, modulated current is loaded on infrared chip, and then electric impulse signal is converted into light pulse signal, carry out the transmitting transmission of information.
Described rare earth ion is Dy
3+, Sm
3+, Tb
3+, Eu
3+, Eu
2+, Ce
2+, Tm
3+or Ho
3+.
Described transition metal ions is Mn
2+or Sn
4+.
Described unorganic glass is silicate glass, phosphate glass, borate glass or tellurate glass,
Described transparent glass ceramics is YAG, Y
2o
3or CaF
2micro-nano crystal match germanate glass, tellurate glass, lead silicate glass or phosphate glass and chalcogenide glass.
Beneficial effect: the present invention uses glass fluorophor for luminous host, improve with the useful life of the fluorescent material compound resin LED that is luminous host and luminous efficiency, and simplify the encapsulation flow process of fluorophor, environmental protection, economizes on resources more.
The present invention adopts infrared light as signal emitting-source, solves radio frequency line communication spectrum anxiety, confidentiality is low and visible light communication up-downgoing agreement is difficult to unification, communicate and throw light on inseparable problem, improve the rate of information throughput more greatly, saved resource.
Because glass fluorophor and Infrared Wireless Communication technology are all comparatively ripe, and make simple, cheap, the two combination brought out the best in each other, therefore, the present invention is simple and easy to realize, and has larger economic worth.
Accompanying drawing explanation
Fig. 1 is the planar structure schematic diagram of LED shown in embodiment 1,
Fig. 2 is the tangent plane structural representation of LED shown in embodiment 1,
Fig. 3 is the tangent plane structural representation of LED shown in embodiment 2.
Have in figure: substrate 1, LED substrate 2, communication drive circuit 3, illumination drive circuit 4, blue light or purple light chip 5, infrared chip 6, transparent phosphor 7, positive pole 8, negative pole 9, protective cover 10, drive circuit 11.
Embodiment
1. the invention provides a kind of structure of Novel LED light, containing two parts in a LED, realize independently throwing light on and communication function simultaneously.One is the white light illumination module based on glass fluorophor, and two is the infrared communication module based on infrared LED chip.White light illumination module sends white light by ultraviolet or blue-light LED chip excited fluophor to realize illumination; Infrared communication module is loaded on infrared LED chip by modulated current by drive circuit, realizes the transmitting transmission of information.Central authorities are on substrate 1 provided with several LED substrates 2, the LED substrate 2 of illuminating white-light illuminating fluorophor is provided with blue light or purple light chip 5 is coated with transparent phosphor 7 on blue light or purple light chip 5, be respectively equipped with positive pole 8, negative pole 9 in the both sides of LED substrate 2, be provided with illumination drive circuit 4 on the side of positive pole 8 or negative pole 9; The LED substrate 2 of communication is provided with infrared chip 6, is respectively equipped with positive pole 8, negative pole 9 in the both sides of LED substrate 2, is provided with communication drive circuit 3 on the side of positive pole 8 or negative pole 9; Protective cover 10 covers above-described each parts, forms a complete communication, illumination sequentially pulsed LED lamp.
2. LED fluorophor of the present invention, can inspire monochrome, double-colored or three coloured light by LED chip, and then be mixed into white light, is used as illumination.It prepares material and method is selected from following one:
The preparation of a, fluorescent glass body
The ree content of luminescence center doping is 0 ~ 10mol%, and glass matrix content is 100 ~ 90mol%, and the quality summation of said components is 100mol%.Wherein, luminescence center is one or more rare earth ions (Dy
3+, Sm
3+, Tb
3+, Eu
3+, Eu
2+, Ce
2+, Tm
3+, Ho
3+deng) and transition metal ions (Mn
2+, Sn
4+deng); Glass matrix comprises silicate, phosphate, borate, tellurate etc.Prepare mainly through high-temperature melting method.
The preparation of b, fluorescence ceramics body
The fluorescence micro/nano crystalline substance of luminescence center doping is 1 ~ 60mol%, and glass matrix is 40 ~ 99mol%, and the summation of said components is 100mol%.Wherein, fluorescence micro/nano crystal is that the single shaft crystalline substance of cube crystalline phase is (as Y
2o
3, YAG etc.), luminescence center is one or more rare earth ions (Dy
3+, Sm
3+, Tb
3+, Eu
3+, Eu
2+, Ce
2+, Tm
3+, Ho
3+deng) and transition metal ions (Mn
2+, Sn
4+deng).Glass matrix is the low melting glass unorganic glass (tellurate glass, lead silicate glass, germanate glass and chalcogenide glass etc.) mated with the refractive index of fluorescence micro/nano crystal and dispersion.Its preparation method is that high-temperature fusion mixes Laue method, Laue method is mixed in hot pressing, thermal induction crystallization method, photoinduction crystallization method etc.
3. the fluorophor prepared, is prepared into required structure and shape by particular process, directly covers or be sleeved on luminescence chip.
4. infrared communication module of the present invention, is characterized in that, is suitable as the infrared LED chip of communication channel for signal emitting-source with 800nm ~ 1000nm etc., is loaded on infrared chip by drive circuit by modulated current, carries out the transmitting transmission of information.
5. transmitting terminal adopts the mode of pulse position modulation (PPM) or pulse width modulation (PWM), binary digital signal is modulated into the electrical pulse sequence of a certain frequency, and drives infrared transmitting tube to send with the form of light pulse; Receiving terminal converts the light pulse received to the signal of telecommunication, then carries out demodulation through demodulator circuit after the process such as amplification, filtering, exports after it is reduced into binary digital signal.
6. the structure of a kind of Novel LED light of the present invention, drive circuit controls lighting module and communication module respectively.Namely, when this LED illumination functions is closed, infrared radio signal emission function is unaffected.To reach further resources conservation.
The present invention will be further described by the following examples, but do not limit the scope of the invention.
Embodiment 1
First, transparent ceramic fluorophor is prepared.Adopt Co deposited synthesis YAG:Ce fluorescence micro/nano crystal, its particle size is about 30-50nm.Take 20gYAG:Ce fluorescence micro/nano crystal for subsequent use.Then, adopt high-temperature melting method to prepare tellurate glass powder 30g, mated with YAG:Ce by the refractive index and dispersion regulating the ratio of glass ingredient adjustment glass.Fluorescence micro/nano crystal is mixed in proportion with glass matrix powder and is placed in crucible, be that glass matrix is melted in a furnace, stir rear quenching and obtain transparent ceramic fluorophor.Finally, the ray structure (fluorophor 7 in lower Fig. 1 is the transparent phosphor thin slice become through technique aft-loaded airfoil such as polishing, polishings) of various sizes and shape is processed into according to lighting requirement.
Then, on substrate 1, substrate 2 is divided into two parts, and distinguishes positive pole 8 and negative pole 9 on cloth at substrate two ends, be used for accessing drive current.Wherein a part of substrate is used for inlaying 450nm blue light emitting chip 5, and covers transparent phosphor 7 thereon, as white-light illuminating.Under the 450nm blue light emitting chip of drive circuit 4 driving excites, the illuminating light flux of 200lx/w can be produced.Another part substrate is used for inlaying the near-infrared luminous chip 6 of 850nm, as infrared communication transmitting terminal.Connect modulation circuit before drive circuit 3, will the electrical pulse sequence of a certain frequency be modulated into, be loaded on the near-infrared luminous chip of 850nm, thus drive infrared transmitting tube to be sent by signal with the situation of light pulse.
Example 2
First, high-temperature melting method is adopted to prepare glass fluorophor.Pulp furnish is 41P
2o
5-17K
2o-8Al
2o
3-20BaF
2-3PbF
2-10LiF-Dy
2o
3; Take 25g raw material, mixing shakes up, and pours in 50ml silica crucible; Silica crucible is put into the high-temperature smelting pot that temperature is 1000 DEG C, insulation 1h; Quenching on 340 DEG C of copper moulds is poured into after abundant stirring shakes up; Put into 360 DEG C of Muffle furnace annealing 5 hours.Finally, according to lighting requirement be processed into various sizes and shape ray structure (fluorophor 7 in lower Fig. 3 be through polishing, polishing, squeeze the techniques such as pipe after the transparent phosphor hollow pipe that becomes of aft-loaded airfoil).
Then, substrate 2 is done into strips, chip can be inlayed in the both sides of substrate like this, improve resource utilization largely.Wherein a part of substrate is used for inlaying 360nm ultra-violet light-emitting chip, is directly sleeved on by tube like transparent fluorophor on this part substrate, can realizes white-light illuminating.Under the 360nm ultra-violet light-emitting chip of drive circuit 11 driving excites, the illuminating light flux of 160lx/w can be produced.Another part inlays the near-infrared luminous chip of 850nm, as infrared communication transmitting terminal.Drive circuit 11 is combinations of in example 13 and 4, but principle is with example 1, controls the operation of illumination and infrared communication transmitting terminal respectively.
Claims (6)
1. a communication, illumination sequentially pulsed LED lamp, it is characterized in that, central authorities on substrate (1) are provided with several LED substrates (2), the LED substrate (2) of illuminating white-light illuminating fluorophor is provided with blue light or purple light chip (5) is coated with transparent phosphor (7) on blue light or purple light chip (5), be respectively equipped with positive pole (8), negative pole (9) in the both sides of LED substrate (2), be provided with illumination drive circuit (4) on the side of positive pole (8) or negative pole (9); The LED substrate (2) of communication is provided with infrared chip (6), be respectively equipped with positive pole (8), negative pole (9) in the both sides of LED substrate (2), be provided with communication drive circuit (3) on the side of positive pole (8) or negative pole (9); Protective cover (10) covers above-described each parts, forms a complete communication, illumination sequentially pulsed LED lamp.
2. communicate as claimed in claim 1, throw light on sequentially pulsed LED lamp, it is characterized in that, described white-light illuminating fluorophor with one or more rare earth ions and transition metal ions for active fluoro center, with unorganic glass or transparent glass ceramics for host material, under the excitation of purple light or blue-light LED chip, white-light illuminating fluorophor can monochromatic, double-colored or three coloured light of stimulated emission, are mixed into white light;
Described infrared communication transmitter module is to be used as the infrared LED chip of near radio infrared communication channel 800nm-1000nm wave band for signal emitting-source, by drive circuit, modulated current is loaded on infrared chip, and then electric impulse signal is converted into light pulse signal, carry out the transmitting transmission of information.
3. communicate as claimed in claim 1, throw light on sequentially pulsed LED lamp, it is characterized in that, described rare earth ion is Dy
3+, Sm
3+, Tb
3+, Eu
3+, Eu
2+, Ce
2+, Tm
3+or Ho
3+.
4. communicate as claimed in claim 1, throw light on sequentially pulsed LED lamp, it is characterized in that, described transition metal ions is Mn
2+or Sn
4+.
5. communicate as claimed in claim 1, throw light on sequentially pulsed LED lamp, it is characterized in that, described unorganic glass is silicate glass, phosphate glass, borate glass or tellurate glass.
6. communicate as claimed in claim 1, throw light on sequentially pulsed LED lamp, it is characterized in that, described transparent glass ceramics is YAG, Y
2o
3or CaF
2micro-nano crystal match germanate glass, tellurate glass, lead silicate glass or phosphate glass and chalcogenide glass.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510484678.6A CN105098037A (en) | 2015-08-10 | 2015-08-10 | Communication and lighting multiplex LED lamp |
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|---|---|---|---|
| CN201510484678.6A CN105098037A (en) | 2015-08-10 | 2015-08-10 | Communication and lighting multiplex LED lamp |
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|---|---|
| CN105098037A true CN105098037A (en) | 2015-11-25 |
Family
ID=54578043
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826457A (en) * | 2016-05-18 | 2016-08-03 | 中国人民大学 | Laser white light emitting device for lighting or display |
| CN107707303A (en) * | 2016-08-09 | 2018-02-16 | 财团法人工业技术研究院 | Visible light communication device and driving method thereof |
| CN108732694A (en) * | 2018-08-06 | 2018-11-02 | 南京邮电大学 | A kind of fiber coupling output system |
| CN112802833A (en) * | 2021-01-13 | 2021-05-14 | 河源市众拓光电科技有限公司 | Visible light communication array chip LED lamp pearl |
| US11025341B2 (en) | 2017-06-13 | 2021-06-01 | Signify Holding B.V. | LED module for emitting signals |
| CN113531406A (en) * | 2020-04-18 | 2021-10-22 | 陕西长岭特种设备股份有限公司 | Multispectral LED integrated light source chip for aircraft landing lamp |
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| CN101350668A (en) * | 2002-10-24 | 2009-01-21 | 株式会社中川研究所 | Illumination light communication device |
| CN202025799U (en) * | 2011-05-12 | 2011-11-02 | 浙江晶申微电子科技有限公司 | Integrated white light LED capsulation applicable to visible light communication |
| US20130134390A1 (en) * | 2010-08-10 | 2013-05-30 | Showa Denko K.K. | Light-emitting diode, light-emitting diode lamp, and illumination device |
| CN103383102A (en) * | 2013-08-07 | 2013-11-06 | 安徽三安光电有限公司 | Light-emitting device and control method thereof |
-
2015
- 2015-08-10 CN CN201510484678.6A patent/CN105098037A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101350668A (en) * | 2002-10-24 | 2009-01-21 | 株式会社中川研究所 | Illumination light communication device |
| US20130134390A1 (en) * | 2010-08-10 | 2013-05-30 | Showa Denko K.K. | Light-emitting diode, light-emitting diode lamp, and illumination device |
| CN202025799U (en) * | 2011-05-12 | 2011-11-02 | 浙江晶申微电子科技有限公司 | Integrated white light LED capsulation applicable to visible light communication |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105826457A (en) * | 2016-05-18 | 2016-08-03 | 中国人民大学 | Laser white light emitting device for lighting or display |
| CN105826457B (en) * | 2016-05-18 | 2018-01-09 | 中国人民大学 | For the laser white light emitting device for illuminating or showing |
| CN107707303A (en) * | 2016-08-09 | 2018-02-16 | 财团法人工业技术研究院 | Visible light communication device and driving method thereof |
| US11025341B2 (en) | 2017-06-13 | 2021-06-01 | Signify Holding B.V. | LED module for emitting signals |
| CN108732694A (en) * | 2018-08-06 | 2018-11-02 | 南京邮电大学 | A kind of fiber coupling output system |
| CN113531406A (en) * | 2020-04-18 | 2021-10-22 | 陕西长岭特种设备股份有限公司 | Multispectral LED integrated light source chip for aircraft landing lamp |
| CN112802833A (en) * | 2021-01-13 | 2021-05-14 | 河源市众拓光电科技有限公司 | Visible light communication array chip LED lamp pearl |
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Application publication date: 20151125 |
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