CN105827317B - A kind of visible light communication system and application - Google Patents
A kind of visible light communication system and application Download PDFInfo
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- CN105827317B CN105827317B CN201610390714.7A CN201610390714A CN105827317B CN 105827317 B CN105827317 B CN 105827317B CN 201610390714 A CN201610390714 A CN 201610390714A CN 105827317 B CN105827317 B CN 105827317B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
Abstract
The present invention relates to visible light communication fields, and in particular to a kind of visible light communication system, including several optical signal launch components and one-to-one optical signal receives component therewith；The optical signal launch component is electroluminescence part, and it is organic photosensitive component that the optical signal, which receives component,.Electroluminescence part can carry different modulated signals by the light of different wave length；Organic photosensitive component not only has the characteristics that the light specificly-response to a certain wave band, can accurately receive the modulation data transmitted in different-waveband optical channel；Moreover, small in size, light weight, meets the development trend of electric elements micromation, there is biggish application space.
Description
Technical field
The present invention relates to photoelectrons and visible light communication field, and in particular to a kind of visible light communication system and application.
Background technique
Visible light communication technology (Visible Light Communication, VLC) refers to the light using visible light wave range
As information carrier, without using the transmission medium of the wire channel such as optical fiber, and the communication party of optical signal is directly transmitted in air
Formula.The advantages such as, frequency spectrum resource abundant, transmission speed height high with information security, are considered to be future wireless system technology
Strong candidate.
In visible light communication research, multi-user can be supplied while the communication system used is research hotspot and difficult point.
In the prior art, multi-user's visible light communication technology generallys use wavelength-division multiplex technique, by transmitting terminal with different wave length
Light carries unlike signal, and receiving end is received with the receiver to different photoresponses respectively to reach the mesh that multi-user uses
's.
However, needing to compose inorganic photosensor using all-wave in the receiving end of visible light communication system in use of wavelength division multiplexing
Part adds the combination of filter to achieve the purpose that respond long to Different lightwave.Not only device volume is big for above-mentioned setting, does not meet electrical
The development trend of element micromation, and bad mechanical property are unable to satisfy the following demand intelligently dressed.
Summary of the invention
For this purpose, structure is complicated, bad mechanical property for existing visible light communication system receiving end to be solved by this invention, it can not
Meets the problem of following the needs of intelligently dressing.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
A kind of visible light communication system of the present invention, including several optical signal launch components and correspond therewith
Optical signal receive component；The optical signal launch component is electroluminescence part, and it is organic light that the optical signal, which receives component,
Quick component.
Optionally, the absorption response wave band main peak of each organic photosensitive component does not overlap, the electroluminescence part
Emission wavelength within the scope of the response wave band of the corresponding organic photosensitive component.
Optionally, the electroluminescence part is in array distribution, the electroluminescence part and the organic photosensitive component
It is thin-film device.
Optionally, the electroluminescence part is Organic Light Emitting Diode (OLED), organic electrochemistry pond (LEC), shines
At least one of diode (LED), cold-cathode fluorescence lamp (CCFL).
Optionally, the electroluminescence part is Organic Light Emitting Diode.
Optionally, the organic photosensitive component includes the organic photoconductive effect semiconductor for having light absorption in specific band
Material and/or specific band have light absorption organic photosensitive semiconductor material.
Optionally, the semiconductor material is the sour cyanines in side and/or polycyclic aromatic hydrocarbon cluster class material.
Optionally, the organic photosensitive component be organic photosensitive resistance, organic photosensitive diode, organic photosensitive triode or
One of organic phototransistors.
Visible light communication system of the present invention is in lighting device, display device, computer, wireless telecommunications system
Using.
The above technical solution of the present invention has the following advantages over the prior art:
1, a kind of visible light communication system of the present invention, including several optical signal launch components and one a pair of therewith
The optical signal answered receives component；The optical signal launch component is electroluminescence part, and it is organic that the optical signal, which receives component,
Photosensitive components.Electroluminescence part can carry different modulated signals by the light of different wave length；Organic photosensitive component is not only
Have the characteristics that the light specificly-response to a certain wave band, can accurately receive the modulation data transmitted in different optical channels；And
And small in size, light weight, meet the development trend of electric elements micromation, there is biggish application space.
2, a kind of visible light communication system of the present invention, the absorption response wave band main peak of each organic photosensitive component
It does not overlap, the response wave band range of the emission wavelength of the electroluminescence part in the corresponding organic photosensitive component
It is interior.Response wave band main peak between the organic photosensitive component does not overlap, while the emission wavelength of the electroluminescence part
It is corresponded with the response wave band of the organic photosensitive component.Therefore, different modulated current signals is passed through respectively different
El light emitting device is converted into optical signal, then is responded respectively by organic photosensitive component to the optical signal of different-waveband, difference letter
Between number will not mutual crosstalk, can be realized multiple users while the communication function used.
3, a kind of visible light communication system of the present invention, the electroluminescence part and the organic photosensitive component are equal
It is light, thin, small in size for thin-film device, meet the needs of electric device integrated level is higher and higher.
3, a kind of visible light communication system of the present invention, the organic photosensitive component are preferably two pole of organic photosensitive
It manages, the photosensitive functional layer in the organic photosensitive diode includes organic side's acid cyanines and/or polycyclic aromatic hydrocarbon cluster class material.One side
Face, such material electronics mobility is high, and manufactured response device speed is fast, ensure that the communication technology of visible light communication system；
On the other hand, the material absorption peak is narrow, is absorbed for the light of specific wavelength, and the absorbing wavelength between different materials is not mutual
It overlaps, so that the signal of visible light communication does not interfere with each other.
4, a kind of visible light communication system of the present invention, the electroluminescence part are preferably organic light-emitting diodes
Pipe, the development trend for meeting following illumination and display technology can be adapted to and excellent moreover, Organic Light Emitting Diode has flexibility
Change intelligent wearable device.
Detailed description of the invention
In order to make the content of the present invention more clearly understood, it below according to specific embodiments of the present invention and combines
Attached drawing, the present invention is described in further detail, wherein
Fig. 1 is the operation principle schematic diagram of visible light communication system in the embodiment of the present invention 1；
Fig. 2 is the operation principle schematic diagram of visible light communication system in the embodiment of the present invention 2；
Fig. 3 is that the middle optical signal launch component of 2 visible light communication system of the embodiment of the present invention and optical signal receive component
Transmitting, response relation figure；
Fig. 4 is the traffic rate of visible light communication system and bit error rate schematic diagram in the embodiment of the present invention 3；
Fig. 5 is the traffic rate of visible light communication system and bit error rate schematic diagram in the embodiment of the present invention 4；
Fig. 6 is the traffic rate of visible light communication system and bit error rate schematic diagram in the embodiment of the present invention 2；
Appended drawing reference are as follows: 1- modulated current signal, 2- optical signal launch component, the first electroluminescence part of 21-, 22- electricity
Photoluminescence component, 23- third electroluminescence part, 3- optical signal, which receive component, the first organic photosensitive of 31- component, 32- second, to be had
Machine photosensitive components, 33- third organic photosensitive component, 4- output signal.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to reality of the invention
The mode of applying is described in further detail.
The present invention can be embodied in many different forms, and should not be construed as limited to embodiment set forth herein.
On the contrary, providing these embodiments, so that the disclosure will be thorough and complete, and design of the invention will be fully conveyed to
Those skilled in the art, the present invention will only be defined by the appended claims.In the accompanying drawings, for clarity, the area Ceng He can be exaggerated
The size and relative size in domain.It should be understood that when element such as layer, region or substrate are referred to as " being formed in " or " setting
" another element "upper" when, which can be arranged directly on another element, or there may also be intermediary elements.
Embodiment 1
The present embodiment provides a kind of visible light communication systems, including optical signal launch component 2 and corresponding light letter
Number receive component 3.As shown in Figure 1, optical signal launch component 2 includes the first electroluminescence part 21, the second electroluminescence part
22, third electroluminescence part 23, it includes the first organic photosensitive component 31, the second organic photosensitive component that optical signal, which receives component 3,
32, third organic photosensitive component 33.
Optical signal launch component 2 be electroluminescence part, electroluminescence part be Organic Light Emitting Diode (OLED),
At least one of organic electrochemistry pond (LEC), light emitting diode (LED), cold-cathode fluorescence lamp (CCFL).As of the invention
One embodiment, in the present embodiment, optical signal launch component 2 is Organic Light Emitting Diode, meets following illumination and display skill
The development trend of art can be adapted to simultaneously Intelligent Optimal wearable device moreover, Organic Light Emitting Diode has flexibility.Organic light emission
Diode is integrated in illumination or display equipment, and is in array distribution.
It is organic photosensitive component that optical signal, which receives component 3, not only has specific absorbent properties, and response wave band range is rich
Richness can accurately receive the modulation data transmitted in different optical channels；Moreover, small in size, light weight, it is miniature to meet electric elements
The development trend of change has biggish application space.
Organic photosensitive component 31,32,33 includes the organic photoconductive effect semiconductor material for having light absorption in specific band
Expect and/or there is light absorption organic photosensitive semiconductor material in specific band；Selected from but not limited to organic photosensitive resistance, organic
One of photodiode, organic photosensitive triode or organic phototransistors, the present embodiment are organic photosensitive diode.
Response wave band main peak between organic photosensitive component 31,32,33 does not overlap, while the electroluminescence part
The response wave band of emission wavelength and the organic photosensitive component corresponds.Therefore, different modulated current signals is led to respectively
It crosses different el light emitting devices and is converted into optical signal, then the optical signal of different-waveband is rung respectively by organic photosensitive component
Answer, between unlike signal will not mutual crosstalk, can be realized multiple users while the communication function used.
As an embodiment of the present invention, in the present embodiment, as shown in Figure 1, by the different modulating with n subcarrier
Current signal 1 divides for 3 channels, passes through the first electroluminescence part 21, the second electroluminescence part 22, the electroluminescent hair of third respectively
Optical assembly 23 is converted into optical signal, then passes through one-to-one first organic photosensitive component 31, the second organic photosensitive component therewith
32, the optical signal in 33 pairs of third organic photosensitive component different channels responds respectively, obtains output signal 4.Unlike signal will not be mutual
Phase crosstalk reaches the communication function for making 3n user while using.
As convertible embodiment of the invention, electroluminescence part, optical signal receive component in optical signal launch component 2
The quantity of organic photosensitive component in 3 is without being limited thereto, and electroluminescence part, organic photosensitive component both at least one, and
The purpose of the present invention can be realized in one-to-one correspondence, belongs to the scope of protection of the present invention.
Organic Light Emitting Diode includes at least first electrode, luminescent layer and the second electrode being cascading, as this
The convertible embodiment of invention, the Organic Light Emitting Diode can also include hole injection layer, hole transmission layer, electron injection
One of layer, electron transfer layer or a variety of combinations.
First electrode can for the metal oxides such as tin indium oxide (abbreviation ITO), zinc oxide, zinc tin oxide or gold, copper,
Silver, the higher metal of the work functions such as nickel alumin(i)um alloy or polythiophene/polyvinylbenzenesulfonic acid sodium (abbreviation PEDOT:PSS), polyaniline
At least one of (abbreviation PANI), carbon nanotube, graphene, may be implemented the purpose of the present invention, belong to protection of the invention
Range.
Material used in the functional layers such as the hole injection layer, the hole transmission layer, the electron transfer layer and luminescent layer
Compared with technology, hole injection layer described in the present embodiment is preferably copper phthalocyanine (CuPc) for material and preparation method；Hole transmission layer
Arylamine class and branch polymer same clan low molecule material, preferably N, N '-two-(1- naphthalene)-N, N '-diphenyl -1,1- can be used
Xenyl -4,4- diamines (NPB)；Luminescent layer can be fluorescent material or phosphor material.
The second electrode generally use the lower metal of the work functions such as lithium, magnesium, calcium, strontium, aluminium, indium or they and copper, gold,
The electrode layer that the alloy or above-mentioned metal of silver and its fluoride are alternatively formed.
At least one of the first electrode and the second electrode are euphotic electrode, so as to light output.
In the present embodiment, the first electroluminescence part 21 is red device, is purchased from Kunshan Visionox Technology Co., Ltd.,
Device type is Visionox P14257；Second electroluminescence part 22 is green device, purchased from the limited public affairs of Kunshan Visionox science and technology
Department, device type are Visionox P14078；Third electroluminescence part 23 is blue-light device, is had purchased from Kunshan Visionox science and technology
Limit company, device type are Visionox P14211.
As an embodiment of the present invention, organic photosensitive diode, including be stacked third electrode, photosensitive layer with
And the 4th electrode.
Organic photosensitive diode prepares materials and methods compared with technology, wherein photosensitive layer can be acene class, phthalocyanine
Class, azobenzene, fullerene, perovskite etc. are one or more, and there is photoconductive effect semiconductor material or light sensitivity partly to lead
The combination of body material, the preferred squarylium type material of the present embodiment and polycyclic aromatic hydrocarbon cluster class material.On the one hand, such material electronics moves
Shifting rate is high, and manufactured response device speed is fast, ensure that the communication technology of visible light communication system；On the other hand, which inhales
It is narrow to receive peak, is absorbed for the light of specific wavelength, the absorbing wavelength between different materials does not overlap each other, so that visible light
The signal of communication does not interfere with each other.
Third electrode should be transparent sensing electrode, can be one of lithium, magnesium, calcium, strontium, aluminium, indium, copper, gold, silver or more
One of alloy or lithium, magnesium, calcium, strontium, aluminium, indium, copper, gold, silver of kind or a variety of electrodes being alternatively formed with its fluoride
One of layer or tin indium oxide, polythiophene/polyvinylbenzenesulfonic acid sodium, polyaniline, carbon nanotube, graphene, the present embodiment
It is preferred that ITO electrode；4th electrode can be opaque metal electrode, preferably Al electrode.
Electroluminescence part and organic photosensitive component are thin-film device, light, thin, small in size, and it is integrated to meet electric device
Spend higher and higher demand.
Embodiment 2
The present embodiment provides a kind of visible light communication systems, as shown in Fig. 2, its structure is with embodiment 1, unlike: and only
Containing 2 data channel, corresponding first electroluminescence part 21 in channel 1 and the first organic photosensitive component 31；Channel 2 corresponds to third
Electroluminescence part 23 and third organic photosensitive component 33.
Fig. 3 is electroluminescence part 21,23 luminous maps, external quantum efficiency figure in the present embodiment visible light communication system
The absorption of spectrum and organic photosensitive component 31,33 responds map.
It can be seen from the figure that the emission peak of the first electroluminescence part 21 is 640nm, corresponding first organic light
The response wave band of quick component 31 is in 530-700nm；The emission peak of third electroluminescence part 23 is 460nm, corresponding the
The response wave band of three organic photosensitive components 33 is in 400-520nm.It can illustrate, a kind of visible light communication system provided in this embodiment
In system, the optical signal of different-waveband responds respectively, between unlike signal will not mutual crosstalk, can be realized multiple users while making
Communication function.
Visible light communication system in the present embodiment is tested, in the first electroluminescence part 21 and the electroluminescent hair of third
Input modulating signal 1, corresponding first organic photosensitive component 31, third organic photosensitive component 33 receive respectively simultaneously at optical assembly 23 end
Output signal 4, transmission rate and bit error rate relation as shown in fig. 6, define the bit error rate lower than the bit error rate before error correction (pre-FEC,
3.8×10-3) when traffic rate be the attainable limit traffic rate in the channel, then show the channel 1, channel 2 simultaneously
When work, 2 channel rate of visible light communication system channel reaches 90kb/s, and 1 rate of channel reaches 88kb/s, shows that this can
Light-exposed communication system is able to bear at the same time two users and uses.
Embodiment 3
The present embodiment provides a kind of visible light communication system, structure with embodiment 1, unlike: only contain 1 data
Channel, corresponding first electroluminescence part in channel 1 and the first organic photosensitive component.
Visible light communication system in the present embodiment is tested, inputs modulation letter at the first electroluminescence part end
Number, data are received in the first organic photosensitive assembly end, transmission rate is lower than with bit error rate relation as shown in figure 4, defining the bit error rate
The bit error rate before error correction (pre-FEC, 3.8 × 10-3) when traffic rate be the attainable limit traffic rate in the channel, then table
It is bright when the channel works independently, the visible light communication system can achieve 190kb/s.
Embodiment 4
The present embodiment provides a kind of visible light communication system, structure with embodiment 1, unlike: only contain 1 data
Channel, the corresponding third electroluminescence part in channel 1 and third organic photosensitive component.
Visible light communication system in the present embodiment is tested, inputs modulation letter at third electroluminescence part end
Number, data are received in third organic photosensitive assembly end, transmission rate is lower than with bit error rate relation as shown in figure 5, defining the bit error rate
The bit error rate before error correction (pre-FEC, 3.8 × 10-3) when traffic rate be the attainable limit traffic rate in the channel, then table
It is bright when the channel works independently, the visible light communication system can achieve 530kb/s.
Test case 2
It is tested with visible light communication system as described in the examples, in the end feux rouges OLED input modulating signal, in feux rouges
The end OPD receives data, transmission rate and bit error rate relation as shown in figure 5, defining the bit error rate lower than the bit error rate (pre- before error correction
FEC, 3.8 × 10-3) when traffic rate be the attainable limit traffic rate in the channel, then show independent in red channel
When work, the visible light communication system can achieve 190kb/s.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
Variation is still in the protection scope of this invention.
Claims (8)
1. a kind of visible light communication system, including optical signal launch component and corresponding optical signal receive component；It is special
Sign is that the optical signal launch component includes electroluminescence part, and it includes organic photosensitive components that the optical signal, which receives component,；
The absorption response wave band main peak of each organic photosensitive component does not overlap, and the emission wavelength of the electroluminescence part exists
Within the scope of the response wave band of the corresponding organic photosensitive component.
2. visible light communication system according to claim 1, it is characterised in that: the electroluminescence part is in array point
Cloth, the electroluminescence part and the organic photosensitive component are thin-film device.
3. visible light communication system according to claim 1 or 2, it is characterised in that: the electroluminescence part is organic
Light emitting diode (OLED), organic electrochemistry pond (LEC), light emitting diode (LED), in cold-cathode fluorescence lamp (CCFL) at least
It is a kind of.
4. visible light communication system according to claim 3, it is characterised in that: the electroluminescence part is organic light emission
Diode.
5. visible light communication system according to claim 1 or 2, it is characterised in that: the photosensitive components are included in specific
Organic photoconductive effect semiconductor material of the wave band with light absorption and/or there is light absorption organic photosensitive half in specific band
Conductor material.
6. visible light communication system according to claim 5, it is characterised in that: the semiconductor material be the sour cyanines in side and/
Or polycyclic aromatic hydrocarbon cluster class material.
7. visible light communication system according to claim 1 or 2, it is characterised in that: the organic photosensitive component is organic
One of photo resistance, organic photosensitive diode, organic photosensitive triode or organic phototransistors.
8. a kind of described in any item visible light communication systems of claim 1-7 are in lighting device, display device, computer, nothing
Application in line communication apparatus.
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| CN105637320A (en) * | 2013-08-19 | 2016-06-01 | 巴斯夫欧洲公司 | Optical detector |
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| US8456092B2 (en) * | 2008-09-05 | 2013-06-04 | Ketra, Inc. | Broad spectrum light source calibration systems and related methods |
| CN101442043A (en) * | 2008-12-31 | 2009-05-27 | 清华大学 | Organic light coupling device |
| CN104638105B (en) * | 2013-11-08 | 2018-01-23 | 北京鼎材科技有限公司 | A kind of OTFT and preparation method thereof |
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| CN105637382A (en) * | 2013-08-19 | 2016-06-01 | 巴斯夫欧洲公司 | Detector for determining a position of at least one object |
| CN105637320A (en) * | 2013-08-19 | 2016-06-01 | 巴斯夫欧洲公司 | Optical detector |
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