CN109617613A - Visible light communication device - Google Patents
Visible light communication device Download PDFInfo
- Publication number
- CN109617613A CN109617613A CN201910023549.5A CN201910023549A CN109617613A CN 109617613 A CN109617613 A CN 109617613A CN 201910023549 A CN201910023549 A CN 201910023549A CN 109617613 A CN109617613 A CN 109617613A
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- light source
- light
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- communication device
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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
- H04B10/40—Transceivers
-
- 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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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The present invention relates to field of communication technology more particularly to a kind of visible light communication devices.The visible light communication device includes transceiver module；The transceiver module includes: transmitting unit, including light source and the first lens；First lens are located at the light-emitting surface of the light source, for converging the first optical signal of the light source transmitting；The light source includes multiple sub-light sources；Receiving unit, including photodetector；Multiple sub-light sources are arranged around the periphery of the photodetector, and the photodetector is used to receive the second optical signal from the external world and by the second optical signal converted electrical number.Present invention decreases the angles of divergence of transmitting light, improve the emitting performance and receptivity of visible light communication device.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of visible light communication devices.
Background technique
Visible light communication (Visible Light Communication, VLC) is in light emitting diode (Light
Emitting Diode, LED) or the one kind that technically grows up such as laser light source is novel, short distance, high speed wireless communication
Technology.Although laser light source good directionality, brightness are high, its cost is larger, therefore, at present mainly using LED as visible light
Transmitting light source in communication system.Using LED as the visible light communication device of transmitting light source, using atmosphere or water as teaching matchmaker
It is situated between, transmits information by issuing the visible light signal that visually imperceptible, high speed light and shade flashes, utilize and shine in receiving end
Diode (Photodiode, PD) completes photoelectric conversion, carries out the reception, regeneration, demodulation of electric signal then to realize information
Transmitting.Compared with conventional wireless technology for radio frequency, VLC includes the advantages such as energy consumption is low, procuring equipment is few, meets national energy-saving
Emission reduction strategy；No electromagnetic pollution, it is seen that optical band and radiofrequency signal do not interfere with each other, and to eye-safe, frequency spectrum is without authorization
Workable advantage；Meanwhile information security field being suitble to use, the information as long as sheltering from visible light, in VLC communication network
It will not leak, there is highly confidential property.For these reasons, it is seen that optic communication is acknowledged as communication skill most with prospects
Art, it has also become research hotspot both domestic and external.
But using LED as transmitting light source when, due to the diffusion angle of LED larger (generally at 100 °~120 °),
Transmission range is shorter, leads in visible light communication device that light loss is larger, reduces the efficiency of visible light communication.
Therefore, how to reduce the diffusion angle for emitting light source in visible light communication device, improve visible light communication device
Communication efficiency is a technical problem to be solved urgently.
Summary of the invention
The present invention provides a kind of visible light communication device, emits light source hair in existing visible light communication device for solving
The larger problem of the diffusion angle of light out, to improve the communication efficiency of visible light communication device.
To solve the above-mentioned problems, the present invention provides a kind of visible light communication devices, including transceiver module；The transmitting-receiving
Module includes:
Transmitting unit, including light source and the first lens；First lens are located at the light-emitting surface of the light source, for converging
First optical signal of the light source transmitting；The light source includes multiple sub-light sources；
Receiving unit, including photodetector；Multiple sub-light sources are arranged around the periphery of the photodetector, institute
Photodetector is stated for receiving the second optical signal from the external world and by the second optical signal converted electrical number.
Preferably, the receiving unit further includes the second lens；Second lens are covered in the photodetector
Incidence surface, for converging second optical signal to the photodetector.
Preferably, first lens include with one-to-one multiple first sub-lens of multiple sub-light sources, it is described
First sub-lens are covered in the light-emitting surface of the corresponding sub-light source.
Preferably, multiple sub-light sources are arranged in a ring, and the photodetector is located at the center of the annular.
Preferably, the light source includes multiple sub-light source groups parallel with one another, includes mutual in each sub-light source group
Concatenated several sub-light sources, all sub-light sources in the light source are arranged into the annular.
Preferably, the quantity of sub-light source described in multiple sub-light source groups is all the same, and multiple sub-light source groups are closed
In the center symmetric setting of the light source.
Preferably, the light source includes two sub-light source groups, includes being serially connected in each sub-light source group
Three sub-light sources.
Preferably, first lens are non-spherical lens, the angle of divergence for the first optical signal that the light source is issued
It is limited within the scope of -10 °~10 °.
Preferably, the sub-light source is light emitting diode, and the photodetector is avalanche photodide.
Preferably, the size of the light emitting diode is identical as the size of the avalanche photodide.
The first lens are arranged by the light-emitting surface of the light source in transmitting unit in visible light communication device provided by the invention,
The first light issued to the light source collimates, to reduce the angle of divergence of first light, and then can described in improvement
The emitting performance and receptivity of light-exposed communication device；Meanwhile the light source, and multiple sons are constituted using multiple sub-light sources
Light source is arranged around the periphery of photodetector, simplifies the structure of transceiver module, improves inside visible light communication device
Space utilization rate facilitates the volume for further decreasing visible light communication device；Meanwhile improving the frequency response of the light source
Performance improves the overall emitted power of the light source, extends the communication distance of the visible light communication device, expands institute
State the application field of visible light communication device.
Detailed description of the invention
Attached drawing 1 is the structural block diagram of transceiver module in the specific embodiment of the invention；
Attached drawing 2 is the structural schematic diagram of sub-light source and photodetector in the specific embodiment of the invention；
Attached drawing 3 is the schematic cross-section of transceiver module in the specific embodiment of the invention；
Attached drawing 4A-4B is the result figure that ZEMAX emulation is used to the light source of not set first lens；
Attached drawing 5A-5B is the result figure emulated after the first lens are arranged in the light-emitting surface of a sub-light source using ZEMAX；
Attached drawing 6A-6B is the result figure for integrally using ZEMAX to emulate to the light source for being provided with the first lens；
Attached drawing 7 is that the incidence surface of photodetector is arranged after the second lens in the specific embodiment of the invention to use
The result figure of ZEMAX emulation；
Attached drawing 8 is the overall structure diagram of visible light communication device in the specific embodiment of the invention.
Specific embodiment
It elaborates with reference to the accompanying drawing to the specific embodiment of visible light communication device provided by the invention.
Present embodiment provides a kind of visible light communication device, and attached drawing 1 is received in the specific embodiment of the invention
The structural block diagram of module is sent out, attached drawing 2 is the structural schematic diagram of sub-light source and photodetector in the specific embodiment of the invention, attached
Fig. 3 is the schematic cross-section of transceiver module in the specific embodiment of the invention.
As shown in Figure 1, Figure 2, Figure 3 shows, the visible light communication device that present embodiment provides, including transceiver module 10；
The transceiver module 10 includes:
Transmitting unit 11, including light source 111 and the first lens 112；First lens 112 are located at the light source 111
Light-emitting surface, the first optical signal emitted for converging the light source 111；The light source 111 includes multiple sub-light sources 21；
Receiving unit 12, including photodetector 121；Multiple sub-light sources 21 are around the photodetector 121
Periphery setting, the photodetector 121 are used to receive from the second extraneous optical signal and turn second optical signal
Change electric signal.
Specifically, the transmitting unit 11 is for outwardly emitting first optical signal.Pass through setting described first
Lens 112 carry out angle control to first optical signal of the light source 111 transmitting, so that described first after collimation
The angle of divergence of optical signal reduces, so as to improve the emitting performance of the visible light communication device.The improvement of emitting performance also helps
First optical signal is preferably received in receiving end, so that the receptivity of receiving end is also synchronized and is improved.Moreover, comparing
In in the prior art by the way of single light source, present embodiment constitutes the light source 111 using multiple sub-light sources 21,
The overall emitted power that can be improved the light source 111 improves the frequency response characteristic of the transmitting unit 11, so that this is specific
The communication distance for the visible light communication device that embodiment provides is extended, such as by the way that multiple sub-light sources are rationally arranged
The transmission power of 21 arrangement mode and each sub-light source 21 can make the communication of the visible light communication device
Distance reaches 50 meters.
Preferably, multiple sub-light sources 21 are arranged in a ring, and the photodetector 121 is located in the annular
The heart.
Specifically, as shown in Fig. 2, multiple sub-light sources 21 are with the photodetector for receiving ambient
Centered on 121, the periphery for being arranged in the photodetector 121 annular in shape.Using this setup, on the one hand, institute
First optical signal for stating the transmitting of sub-light source 21 can be with uniform emission；On the other hand, the structure of transceiver module is simplified, is improved
Space utilization rate inside visible light communication device, facilitates the volume for further decreasing visible light communication device.
Preferably, the light source 111 includes multiple sub-light source groups parallel with one another, includes phase in each sub-light source group
Mutual concatenated several sub-light sources 21, all sub-light sources 21 in the light source 111 are arranged into the annular.
Specifically, multiple sub-light sources 21 can be divided into several sub-light source groups, in each sub-light source group
It is parallel with one another between each sub-light source group including multiple sub-light sources being serially connected.Wherein, several described sub-light sources
Sub-light source quantity in group can it is identical, can also be different, those skilled in the art can select according to actual needs.It adopts
It, can be while improving the overall emitted power of the light source 111, it is ensured that the tune of the sub-light source 21 with this setup
Bandwidth processed is unaffected, to further improve the performance of the visible light communication device.
Preferably, the quantity of sub-light source 21 described in multiple sub-light source groups is all the same, and multiple sub-light source groups
Center symmetric setting about the light source 111.
For example, the light source 111 in present embodiment includes two sub-light source groups parallel with one another, each
It include 3 sub-light sources 31 being serially connected in the sub-light source group, the photodetector 121 is located at the light source 111
Center, two sub-light source groups are symmetrical about the photodetector 121, i.e. 6 sub-light sources 21 are in annulus
Shape is uniformly distributed in the periphery of the photodetector 121.
Preferably, the receiving unit 12 further includes the second lens 122；Second lens 122 are covered in the photoelectricity
The incidence surface of detector 121, for converging second optical signal to the photodetector 121.
Specifically, the setting of second lens 122, can will be from extraneous the second optical signal maximum journey
Degree focuses on the incidence surface of the photodetector 121, to improve induction sensitivity and the institute of the receiving unit 12
State the reliability of transceiver module 10.Attached drawing 7 is to be arranged second to the incidence surface of photodetector in the specific embodiment of the invention
The result figure for using ZEMAX to emulate after lens.
In order to be further simplified the structure of the transceiver module 10, it is preferred that first lens 112 include and multiple institutes
One-to-one multiple first sub-lens 31 of sub-light source 21 are stated, first sub-lens 31 are covered in the corresponding sub-light
The light-emitting surface in source 21.
Wherein, by the way that first sub-lens 31 of corresponding one are arranged to each sub-light source 21, so as to
To carry out the convergence of transmitting light to each sub-light source 21, to maximally reduce the whole hair of the light source 111
Dissipate angle.
Preferably, first lens 112 are non-spherical lens, the first optical signal that the light source 111 is issued
The angle of divergence is limited within the scope of -10 °~10 °.Specifically, first sub-lens 31 are non-spherical lens, pass through each institute
It states the light that the first sub-lens 31 emit the corresponding sub-light source 21 to be converged, collimated, so as to come from
It is limited within the scope of -10 °~10 ° in the angle of divergence of first optical signal of the light source 111.
Attached drawing 4A-4B is the result figure that ZEMAX emulation is used to the light source of not set first lens, I expression in Fig. 4 A
The light distribution of sub-light source transmitting when not set first lens；Attached drawing 5A-5B is the light-emitting surface setting the in a sub-light source
One lens use the result figure of ZEMAX emulation later, and II in Fig. 5 A indicates that the light of sub-light source transmitting is saturating through one first son
Light distribution after mirror collimation；Attached drawing 6A-6B is the result for integrally using ZEMAX to emulate to the light source for being provided with the first lens
Scheme, III in Fig. 6 A indicates your the light source integrally light distribution after first collimated.
Preferably, the sub-light source 21 is light emitting diode, and the photodetector 121 is avalanche photodide.More
Preferably, the size of the light emitting diode is identical as the size of the avalanche photodide.
In present embodiment, the sub-light source 21 is mounted on circuit board 20 with the photodetector 121.Make
The light emitting diode for the sub-light source 21 is with the avalanche photodide as the photodetector 121 in institute
The diameter for stating the projection on circuit board 20 can be 5mm.
Attached drawing 8 is the overall structure diagram of visible light communication device in the specific embodiment of the invention.This specific implementation
Mode may include transmitting terminal 81 and receiving end 82, and the transmitting terminal 81 includes the first transceiver module 811, and the receiving end 82 is wrapped
The second transceiver module 821 is included, is communicated between the transmitting terminal 81 and the receiving end 82 by channel 80.Described first receives
Sending out the structure of module 811 and second transceiver module 821 can be with Fig. 1, Fig. 2 and the transceiver module 10 shown in Fig. 3
Structure is identical.
Specifically, the light source in first transceiver module 811 emits the first optical signal to the receiving end 82, described
First optical signal by first transceiver module 811 the convergence of the first lens, collimation after be transmitted to through the channel 80
The receiving end 82；First optical signal received is focused on institute by the second lens in second transceiver module 821
The photodetector in the second transceiver module 821 is stated, realizes the reception of first optical signal.Pass through the remittance of first lens
Poly-, collimation, so that second transceiver module 821 also accordingly improves the receptivity of first optical signal.
Light source in second transceiver module 821 emits the second optical signal, the second light letter to the transmitting terminal 81
Number by second transceiver module 821 the convergence of the first lens, collimation after through the channel 80 be transmitted to the transmitting
End 81；Second optical signal is focused on first transceiver module 811 by the second lens in first transceiver module 811
In photodetector, realize the reception of second optical signal.
The visible light communication device that present embodiment provides passes through the light-emitting surface of the light source in transmitting unit setting the
One lens, the first light issued to the light source collimates, to reduce the angle of divergence of first light, and then improves
The emitting performance and receptivity of the visible light communication device；Meanwhile the light source is constituted using multiple sub-light sources, and multiple
The sub-light source is arranged around the periphery of photodetector, simplifies the structure of transceiver module, improves visible light communication device
Internal space utilization rate, facilitates the volume for further decreasing visible light communication device；Meanwhile improving the frequency of the light source
Rate response performance improves the overall emitted power of the light source, extends the communication distance of the visible light communication device, expands
The big application field of the visible light communication device.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of visible light communication device, which is characterized in that including transceiver module；The transceiver module includes: transmitting unit, packet
Include light source and the first lens；First lens are located at the light-emitting surface of the light source, for converging the first of the light source transmitting
Optical signal；The light source includes multiple sub-light sources；
Receiving unit, including photodetector；Multiple sub-light sources are arranged around the periphery of the photodetector, the light
Electric explorer is used to receive the second optical signal from the external world and by the second optical signal converted electrical number.
2. visible light communication device according to claim 1, which is characterized in that the receiving unit further includes second saturating
Mirror；Second lens are covered in the incidence surface of the photodetector, for converging second optical signal to the photoelectricity
Detector.
3. visible light communication device according to claim 1, which is characterized in that first lens include with it is multiple described
One-to-one multiple first sub-lens of sub-light source, first sub-lens are covered in the light out of the corresponding sub-light source
Face.
4. visible light communication device according to claim 1, which is characterized in that multiple sub-light sources are arranged in a ring,
The photodetector is located at the center of the annular.
5. visible light communication device according to claim 4, which is characterized in that the light source includes parallel with one another multiple
Sub-light source group, includes several sub-light sources being serially connected in each sub-light source group, all sub-lights in the light source
Source is arranged into the annular.
6. visible light communication device according to claim 5, which is characterized in that sub-light described in multiple sub-light source groups
The quantity in source is all the same, and center symmetric setting of multiple sub-light source groups about the light source.
7. visible light communication device according to claim 6, which is characterized in that the light source includes two sub-light sources
Group includes three sub-light sources being serially connected in each sub-light source group.
8. visible light communication device according to claim 1, which is characterized in that first lens are non-spherical lens,
It is limited within the scope of -10 °~10 ° with the angle of divergence for the first optical signal for issuing the light source.
9. visible light communication device according to claim 1, which is characterized in that the sub-light source is light emitting diode, institute
Stating photodetector is avalanche photodide.
10. visible light communication device according to claim 9, which is characterized in that the size of the light emitting diode and institute
The size for stating avalanche photodide is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910023549.5A CN109617613A (en) | 2019-01-10 | 2019-01-10 | Visible light communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910023549.5A CN109617613A (en) | 2019-01-10 | 2019-01-10 | Visible light communication device |
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| Publication Number | Publication Date |
|---|---|
| CN109617613A true CN109617613A (en) | 2019-04-12 |
Family
ID=66016629
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910023549.5A Pending CN109617613A (en) | 2019-01-10 | 2019-01-10 | Visible light communication device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110113101A (en) * | 2019-04-23 | 2019-08-09 | 南京邮电大学 | Visible light communication device |
| CN110190903A (en) * | 2019-06-10 | 2019-08-30 | 南京艾凯特光电科技有限公司 | Portable duplex visible light communication device |
| CN111092654A (en) * | 2019-12-05 | 2020-05-01 | 南京艾凯特光电科技有限公司 | Light detection, illumination and communication integrated device and control method thereof |
| 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 |
| CN112994792A (en) * | 2019-12-12 | 2021-06-18 | Oppo广东移动通信有限公司 | Communication device of electronic equipment and electronic equipment |
| WO2024050934A1 (en) * | 2022-09-08 | 2024-03-14 | 深圳技术大学 | Visible-light communication system |
| US12015443B2 (en) | 2022-09-08 | 2024-06-18 | Shenzhen Technology University | Visible light communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337665A (en) * | 2014-08-15 | 2016-02-17 | 南京复实通讯科技有限公司 | Transmitting and receiving device based on visible light communication, and method thereof |
| WO2018007193A1 (en) * | 2016-07-04 | 2018-01-11 | Philips Lighting Holding B.V. | System and method for providing a device access to sensor data |
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2019
- 2019-01-10 CN CN201910023549.5A patent/CN109617613A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337665A (en) * | 2014-08-15 | 2016-02-17 | 南京复实通讯科技有限公司 | Transmitting and receiving device based on visible light communication, and method thereof |
| WO2018007193A1 (en) * | 2016-07-04 | 2018-01-11 | Philips Lighting Holding B.V. | System and method for providing a device access to sensor data |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110113101A (en) * | 2019-04-23 | 2019-08-09 | 南京邮电大学 | Visible light communication device |
| CN110113101B (en) * | 2019-04-23 | 2022-04-12 | 南京邮电大学 | Visible light communication device |
| CN110190903A (en) * | 2019-06-10 | 2019-08-30 | 南京艾凯特光电科技有限公司 | Portable duplex visible light communication device |
| CN110190903B (en) * | 2019-06-10 | 2022-04-15 | 苏州亮芯光电科技有限公司 | Portable duplex visible light communication device |
| CN111092654A (en) * | 2019-12-05 | 2020-05-01 | 南京艾凯特光电科技有限公司 | Light detection, illumination and communication integrated device and control method thereof |
| CN111092654B (en) * | 2019-12-05 | 2023-08-29 | 苏州亮芯光电科技有限公司 | Light detection, illumination and communication integrated device and control method thereof |
| CN112994792A (en) * | 2019-12-12 | 2021-06-18 | Oppo广东移动通信有限公司 | Communication device of electronic equipment and electronic equipment |
| 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 |
| WO2024050934A1 (en) * | 2022-09-08 | 2024-03-14 | 深圳技术大学 | Visible-light communication system |
| US12015443B2 (en) | 2022-09-08 | 2024-06-18 | Shenzhen Technology University | Visible light communication system |
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Application publication date: 20190412 |