CN106656328A - Multichannel beam splitting device VLC system based on space division and realization method - Google Patents
Multichannel beam splitting device VLC system based on space division and realization method Download PDFInfo
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- CN106656328A CN106656328A CN201611080890.7A CN201611080890A CN106656328A CN 106656328 A CN106656328 A CN 106656328A CN 201611080890 A CN201611080890 A CN 201611080890A CN 106656328 A CN106656328 A CN 106656328A
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- module
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- polarizer
- space
- optical modulator
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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
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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
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a multichannel beam splitting device VLC system based on space division, which comprises a control management module, an LED lamp, a beam splitting device, multiple beam communication chains and communication terminals. The invention also discloses a realization method for the multichannel beam splitting device VLC system based on space division. The method comprises the following steps: 1, the LED lamp emits beams carrying digital communication information, and a beam propagation module is entered at the same time; 2, the beams are propagated to form polarized light through polarization treatment; 3, a spatial light modulation module receives control information of the control management module, the beams are subjected to phase modulation treatment, and thus, effects of dynamic diffraction are generated; 4, beams after dynamic diffraction are transmitted to a second polarizer from the spatial light modulation module for further phase modulation; and 5, after phase modulation, multiple beam communication chains are formed. The system and the method have the advantages of optimizing the whole performance of the VLC system can be realized.
Description
Technical field
The present invention relates to visible light communication system, is specifically designed a kind of based on space division multichannel light splitting Neutron beam equipment
VLC systems and implementation method.
Background technology
VLC technologies, send high speed brilliant flash optical signal to realize the new of information transfer as a kind of using luminaire
Emerging wireless communication technology, with environmental protection, without electromagnetic interference, that message transmission rate is big, low in energy consumption, security performance is high etc. is excellent
Point.
Though VLC communication systems have many advantages, its overall communication performance Shortcomings, in order to optimize VLC communications
System, domestic and international industry proposes many solutions, such as takes OFDM, QAM, WDM, MIMO technical measures, meanwhile, research
Person has carried out many researchs on for realization accurately point-to-point communication link, however, this VLC systems can only set up single mesh
The communication link of mark terminal, it is impossible to while being attached with multiple communication terminals.
The content of the invention
In order to overcome the disadvantages mentioned above and deficiency of prior art, the primary and foremost purpose of the present invention is to provide a kind of based on space
Divide multichannel light splitting Neutron beam equipment VLC systems, the system not only have environmental protection, without electromagnetic interference, data transfer speed
Rate is big, low in energy consumption, low cost, it is safe the advantages of, and it can be attached with multiple communication terminals simultaneously.
In order to overcome the disadvantages mentioned above and deficiency of prior art, another object of the present invention is to provide a kind of based on space
Divide the implementation method of the VLC systems of multichannel light splitting Neutron beam equipment.
The primary and foremost purpose of the present invention is achieved through the following technical solutions：One kind divides multichannel light splitting line dress based on space
The VLC systems put, including control management module 10, LED lamp 20, light splitting Neutron beam equipment 30, multiple beam communication link 40 and lead to
Letter terminal 50, the light splitting Neutron beam equipment 30 includes beam spread module 31, the first polarizer 32, the and of space optical modulator module 33
Second polarizer module 34；Further, the polarizer module 34 of first polarizer 32 and second carries out phase to extension light beam
Position modulation；Further, one end of the beam spread module 31 receives the light line of LED lamp 20, the beam spread mould
The other end output extension directional light of block 31；Further, the size of the extension directional light is according to control management module
10 control information is determined, and the extension of the output of one end receiving light beam expansion module 31 of first polarizer 32 is parallel
Light, the other end output polarization processing beam of first polarizer 32, first end of the space optical modulator module 33
Mouth receives the polarization processing beam of the output of the first polarizer 32, and second port output of the space optical modulator module 33 is dynamic
State diffraction light line, the 3rd port connection control management module 10 of the space optical modulator module 33, second polarization
The dynamic diffractive light line of the output of one end reception space optical modulator module 33 of piece module 34, the second polarizer module 34
Other end output polarization processes multiple beam communication link 40 to free space.
Further, the control management module 10 determines multiple beam communication link by the positional information of communication terminal 50
40 focal position, the communication terminal 50 is notebook computer, smart mobile phone and panel computer, and the communication system 50 passes through
The flash device for carrying, the portable external audio frequency interface equipment with optical communication capabilities or with the portable of optical communication capabilities
Formula circumscribed USB interface equipment is carrying out VLC data transfers.
Further, the space optical modulator module 33 is the liquid-crystal apparatus with 8 i.e. 256 grade phase-modulation function,
The control management module 10 controls the state transformation of space optical modulator module 33, the spatial light according to Fresnel Lenses function
Modulation module 33 has the function of dynamic diffractive lens, and the function of the dynamic diffractive lens is received according to light splitting Neutron beam equipment 30
Control information be adjusted.
Another object of the present invention is achieved through the following technical solutions：One kind divides multichannel light splitting line dress based on space
The implementation method of the VLC systems put, comprises the following steps：
Step 1, LED lamp 20 launch the light beam for carrying digital communication, and while into beam spread module 31,
Beam spread is collimated light beam by the beam spread module 31；
Step 2, extension light beam become the polarised light of polarization process by the first polarizer 32；
Step 3, the polarised light of Jing polarizations process enter space light modulation 33, and the space optical modulator module 33 receives control
The control information of management module processed 10 simultaneously makes it produce the effect of dynamic diffractive while carrying out phase-modulation process to light beam；
Step 4, being transmitted into the second polarizer 34 from space optical modulator module 33 and carry out further Jing after dynamic diffractive
Phase-modulation；
Form multiple beam communication link 40 after step 5, phase-modulation, the multiple beam communication link 40 for connection terminal with
The passage of internal VLC networks.
The VLC systems for dividing multichannel light splitting Neutron beam equipment based on space of the present invention include：Control management module, light splitting
Neutron beam equipment, LED lamp and communication terminal, the communication terminal includes notebook computer, smart mobile phone and panel computer etc.；Institute
The movement that control management module controls light splitting line focus according to communication terminal positional information is stated, the light splitting Neutron beam equipment will
LED lamplight is extended and polarization is processed, and while produce dynamic diffractive effect, and obtain being available for many communication terminals connections can
See optic communication light splitting line.The system overcomes that conventional VLC systems are point-to-point, single goal by the design of light splitting Neutron beam equipment
The shortcoming of communication terminal connection, optimizes the overall performance of VLC systems.
Compared with prior art, the present invention has advantages below and beneficial effect：
1st, the present invention proposes a kind of VLC system and methods that multichannel light splitting Neutron beam equipment is divided based on space, and existing
VLC systems are compared, and it can be attached with multiple communication terminals simultaneously, breach the restriction of conventional single goal terminal communication.
2nd, the design that VLC systems proposed by the present invention pass through optical module, can effectively improve the energy density of light splitting line,
Improve system signal noise ratio.
3rd, VLC systems proposed by the present invention are to light beam to polarizer and optical modulator module by being modulated, without the need for relying on
Various complicated modulation techniques, the realization of dynamic diffractive lens model can effectively improve the multiple terminals communication performance of system.
Description of the drawings
Fig. 1 is the VLC system schematics that multichannel light splitting Neutron beam equipment is divided based on space.
Fig. 2 is light splitting line schematic device.
Fig. 3 is the VLC network system realization schematic diagrames that multichannel light splitting Neutron beam equipment is divided based on space.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
As shown in figure 1, a kind of VLC systems that multichannel light splitting Neutron beam equipment is divided based on space, including control management mould
Block 10, LED lamp 20, light splitting Neutron beam equipment 30, multiple beam communication link 40 and communication terminal 50, the control management module 10
It is mainly used in receiving the positional information of communication terminal 50 and while carrying out using Fresnel Lenses function pair light splitting Neutron beam equipment 30
Regulation and control, and then control the spatial distribution state of light splitting line；Further, the multiple beam communication link 40 has similarity very
Enough dynamic diffractive images；Further, the communication terminal 50 is notebook computer, smart mobile phone and panel computer, described
Communication system 50 is by the flash device that carries, the portable external audio frequency interface equipment with optical communication capabilities or with light
The portable circumscribed USB interface equipment of communication function is carrying out VLC data transfers.
As shown in Fig. 2 the light splitting Neutron beam equipment 30 includes that beam spread module 31, the first polarizer 32, spatial light are adjusted
The polarizer module 34 of molding block 33 and second；Further, the light that the reception of beam spread module 31 LED lamp is launched is simultaneously
While being extended process to light beam so that from the output of beam spread module 31 is collimated light beam；Further, described first
The polarizer module 34 of polarizer 32 and second is mainly used to assist space optical modulator module to be modulated the phase place of light beam；Enter one
Step ground, the space optical modulator module 33 is the liquid-crystal apparatus with 8 i.e. 256 grade phase-modulation function, the control management
Module 10 controls the state transformation of space optical modulator module 33 according to Fresnel Lenses function, and the space optical modulator module 33 has
The function of having the function of dynamic diffractive lens, the dynamic diffractive lens is entered according to the control information that light splitting Neutron beam equipment 30 is received
Row adjustment.
As shown in figure 3, a kind of implementation method of the VLC systems that multichannel light splitting Neutron beam equipment is divided based on space is as follows：
The LED 20 launches the light beam for carrying digital communication, and while into beam spread module 31, the beam spread
Beam spread is collimated light beam by module 31, and further, the extension light beam is become at polarization by the first polarizer 32
The polarised light of reason, further, the polarised light of Jing polarizations process enters space light modulation 33, the space optical modulator module 33
Receive the control information of control management module 10 and carry out phase-modulation to light beam simultaneously and process the effect for making it produce dynamic diffractive
Really, further, being transmitted into the second polarizer 34 from space optical modulator module 33 and carry out further phase Jing after dynamic diffractive
Position modulation, further, forms multiple beam communication link 40 after phase-modulation, the multiple beam communication link 40 is connection terminal
With the passage of internal VLC networks.
Above-described embodiment is only one embodiment of the present invention, but embodiments of the present invention do not receive above-described embodiment
Restriction, other any Spirit Essences and the changes, modification, replacement made under principle without departing from the present invention, combine, simplification
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (4)
1. the VLC systems of multichannel light splitting Neutron beam equipment are divided based on space, including：Control management module (10), LED lamp
(20), light splitting Neutron beam equipment (30), multiple beam communication link (40) and communication terminal (50), it is characterised in that：The divided beams
Stream device (30) includes：Beam spread module (31), the first polarizer (32), space optical modulator module (33) and the second polarizer
Module (34), one end of the beam spread module (31) receives the light line of LED lamp (20), the beam spread module
(31) other end output extension directional light, one end receiving light beam expansion module (31) output of first polarizer (32)
Extension directional light, the other end output polarization processing beam of first polarizer (32), the space optical modulator module
(33) a port receives the polarization processing beam of the first polarizer (32) output, the space optical modulator module (33)
Second port output dynamic diffractive light line, the space optical modulator module (33) the 3rd port connection control management
Module (10), the dynamic diffractive light beam of one end reception space optical modulator module (33) output of the second polarizer module (34)
Stream, the other end output polarization of the second polarizer module (34) processes multiple beam communication link (40) to free space.
2. according to right 1 based on space divide multichannel light splitting Neutron beam equipment VLC systems, it is characterised in that：It is described
Control management module (10) is used to determine the focus position of multiple beam communication link (40) by the positional information of communication terminal (50)
Put, the communication terminal (50) is notebook computer, smart mobile phone or panel computer, and the communication system (50) is by what is carried
Flash device, the portable external audio frequency interface equipment with optical communication capabilities or portable external with optical communication capabilities
USB interface device carries out VLC data transfers.
3. according to right 1 based on space divide multichannel light splitting Neutron beam equipment VLC systems, it is characterised in that：It is described
Space optical modulator module (33) is the liquid-crystal apparatus with 256 grades of phase-modulation functions, control management module (10) basis
The state transformation of Fresnel Lenses function control space optical modulator module (33), the space optical modulator module (33) is with dynamic
The function of diffraction lens.
4. described in a kind of claim 1 based on space divide multichannel light splitting Neutron beam equipment VLC systems implementation method, its
It is characterised by, comprises the following steps：
Step 1, LED lamp (20) launch the light beam for carrying digital communication, and while into beam spread module (31),
Beam spread is collimated light beam by the beam spread module (31)；
Step 2, extension light beam become the polarised light of polarization process by the first polarizer (32)；
Step 3, the polarised light of Jing polarizations process enter space light modulation (33), and the space optical modulator module (33) receives control
The control information of management module (10) processed simultaneously makes it produce the effect of dynamic diffractive while carrying out phase-modulation process to light beam；
Step 4, being transmitted into the second polarizer (34) from space optical modulator module (33) and carry out further Jing after dynamic diffractive
Phase-modulation；
After step 5, phase-modulation formed multiple beam communication link (40), the multiple beam communication link (40) for connect terminal with
The passage of internal VLC networks.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611080890.7A CN106656328B (en) | 2016-11-30 | 2016-11-30 | Space division-based multichannel beam splitting device VLC system and implementation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611080890.7A CN106656328B (en) | 2016-11-30 | 2016-11-30 | Space division-based multichannel beam splitting device VLC system and implementation method |
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| CN106656328A true CN106656328A (en) | 2017-05-10 |
| CN106656328B CN106656328B (en) | 2023-03-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361457A (en) * | 2018-11-08 | 2019-02-19 | 京东方科技集团股份有限公司 | Signal receiving/transmission device and implementation method based on visible light communication, system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5276636A (en) * | 1992-09-14 | 1994-01-04 | Cohn Robert W | Method and apparatus for adaptive real-time optical correlation using phase-only spatial light modulators and interferometric detection |
| CN103312412A (en) * | 2012-03-06 | 2013-09-18 | 财团法人工业技术研究院 | Visible light communication transceiver and system |
| CN106059677A (en) * | 2016-05-27 | 2016-10-26 | 上海菜牛光电科技有限公司 | Spatial light modulator |
| WO2016182606A1 (en) * | 2015-05-11 | 2016-11-17 | University Of South Florida | Information beamforming for visible light communication |
-
2016
- 2016-11-30 CN CN201611080890.7A patent/CN106656328B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5276636A (en) * | 1992-09-14 | 1994-01-04 | Cohn Robert W | Method and apparatus for adaptive real-time optical correlation using phase-only spatial light modulators and interferometric detection |
| CN103312412A (en) * | 2012-03-06 | 2013-09-18 | 财团法人工业技术研究院 | Visible light communication transceiver and system |
| WO2016182606A1 (en) * | 2015-05-11 | 2016-11-17 | University Of South Florida | Information beamforming for visible light communication |
| CN106059677A (en) * | 2016-05-27 | 2016-10-26 | 上海菜牛光电科技有限公司 | Spatial light modulator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361457A (en) * | 2018-11-08 | 2019-02-19 | 京东方科技集团股份有限公司 | Signal receiving/transmission device and implementation method based on visible light communication, system |
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| CN106656328B (en) | 2023-03-21 |
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