CN108736974A - A kind of novel visible communication system - Google Patents
A kind of novel visible communication system Download PDFInfo
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- CN108736974A CN108736974A CN201810704605.7A CN201810704605A CN108736974A CN 108736974 A CN108736974 A CN 108736974A CN 201810704605 A CN201810704605 A CN 201810704605A CN 108736974 A CN108736974 A CN 108736974A
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- 238000004891 communication Methods 0.000 title claims abstract description 92
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Classifications
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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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Abstract
The invention discloses a kind of novel visible communication system, which includes：At least one of full-function device and visible light communication light source and reduced function device, wherein visible light communication light source for carrying data information in visible light signal, and sends visible light signal；Reduced function device is communicated with full-function device and/or is communicated with visible light communication light source, for receiving visible light signal and being demodulated to receiving visible light signal to recover data information；Full-function device is for realizing at least one following functions：The function of visible light communication light source, the function of reduced function device and the forwarding capability that the visible light signal received is forwarded.The present invention solves the technical issues of visible light resource caused by the network structure for having not been used in visible light communication in the prior art is not fully utilized, and has reached the technique effect for the utilization rate for improving visible light.
Description
Technical field
The present invention relates to the communications fields, in particular to a kind of novel visible communication system.
Background technology
Using the wireless communication technique of visible light in recent years gradually by the extensive concern of academia and industrial circle, especially
With light emitting diode（Light Emitting Diode, referred to as LED）Etc light-emitting component lighting apparatus it is extensive
It uses, is realizing that the feasibility study of realization cordless communication network covering is many while illumination using semiconductor LED
It is carried out in relevant enterprise.As it can be seen that optic communication and wireless sensor network, WLAN（Wireless Local Area
Network, referred to as WLAN）And the communication mode that is combined of electric line communication system is also in discussion.However, it is possible to
It is confirmed that visible light communication technology will be one of following optional short distance ultra-wideband communications mode.
As the luminous component communicated for high speed optical data, it is contemplated that the influence to human body or medical instrument, LED are most
Strong candidate.Meanwhile the semiconductor light-emitting equipment of the response performance with higher speed, such as：Laser diode（LD）
Or super-radiance light emitting diode（SLD it) is also used as visible light communication equipment, the visible of data information is carried for sending
Light.Data rate in optical communications depends on the response speed of luminaire.It is this that there is higher speed due to this
The luminaire of response performance have received widespread attention.
Realize that the basic principle of visible LED communication is to carry out certain modulation to shining by data to be sent, than
Such as pulse width modulation, pulse position/frequency modulation(PFM) or pulse amplitude modulation.The light energy of this modulation is believed by space
Road is transmitted and by the photodetector on destination apparatus（Either sensor）It receives, photodetector is by optical signal
It is converted to and goes out the data carried in the optical signal by subsequent processing re-demodulation after electric signal.
According to the application scenarios of the following visible light and its distinctive feature, the portable equipment for being equipped with camera also will be more
Come more.Using various LED as information issuing system, various portable/mobile terminals will be a kind of letter as reception system
Clean communication mode.Topologic network transmission method between visible light communication node by deeper into influence visible light communication system
The technology of system develops.Although visible light communication technology has many advantages, such as above-mentioned, do not propose also at present logical for visible light
Topologic network mode in letter system between each communication node, so that visible light resource is difficult to be efficiently utilized.
For above-mentioned problem, currently no effective solution has been proposed.
Invention content
The present invention provides a kind of novel visible communication systems, visible at least to solve to have not been used in the prior art
The technical issues of visible light resource is not fully utilized caused by the network structure of optic communication.
According to an aspect of the invention, there is provided a kind of visible light communication system, including：Full-function device and visible light
At least one of communication light source and reduced function device, wherein above-mentioned visible light communication light source, for believing in visible light
Data information is carried in number, is concurrently served and is stated visible light signal；Above-mentioned reduced function device is communicated with above-mentioned full-function device
And/or communicated with visible light communication light source, for receiving above-mentioned visible light signal and being carried out to receiving above-mentioned visible light signal
Demodulation is to recover above-mentioned data information；Above-mentioned full-function device is for realizing at least one following functions：Above-mentioned visible light is logical
Believe function, the function of above-mentioned reduced function device and the forwarding work(being forwarded to the visible light signal received of light source
Energy.
Preferably, above-mentioned visible light communication light source sends the above-mentioned visible light for carrying data information by way of broadcast
Signal.
Preferably, above-mentioned visible light communication system further includes the broadcast signal source being connected with above-mentioned visible light communication light source,
For being sent to above-mentioned visible light communication light source using signal to be broadcast as above-mentioned data information.
Preferably, it is additionally provided with sending device in above-mentioned reduced function device, for carrying data in visible light signal
Information is concurrently served and states visible light signal.
Preferably, above-mentioned reduced function device receives most one above-mentioned visible light communication light sources transmissions within the same time
Optical signal or receive the visible light signal that most above-mentioned full-function devices are sent.
Preferably, above-mentioned full-function device is additionally operable to receive above-mentioned the carrying of the transmission of the full-function device in addition to itself
The visible light signal of data information, and the visible light signal received is transmitted to one or more above-mentioned reduced function devices.
Preferably, above-mentioned visible light communication light source is traffic light.
Preferably, above-mentioned reduced function device is the equipment with camera function.
Preferably, the above-mentioned visible light signal for carrying data information is sent out by fluorescent lamp and/or light emitting diode
Light and shade flash signal.
In the present invention, a kind of visible light communication system is provided, in the system may include full-function device, simplify
Function device either visible light communication light source etc., so as to form the communication system of different frameworks according to demand to meet
Different communication requirements.Solve the network structure for having not been used in visible light communication in the prior art through the above way and
The technical issues of caused visible light resource is not fully utilized, has reached the technique effect of the visible light utilization efficiency of raising.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is a kind of preferred structure schematic diagram of visible light communication system according to the ... of the embodiment of the present invention；
Fig. 2 is a kind of preferred schematic diagram of visible light communication system topological diagram according to the ... of the embodiment of the present invention；
Fig. 3 is a kind of preferred schematic diagram of visible light communication system topological diagram according to the ... of the embodiment of the present invention；
Fig. 4 is a kind of preferred structure block diagram of full-function device according to the ... of the embodiment of the present invention.
Specific implementation mode
Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
An embodiment of the present invention provides a kind of preferred visible light communication systems, as shown in Figure 1, the communication system includes：
At least one of full-function device 102 and visible light communication light source 104 and reduced function device 106, below to above-mentioned
Several equipment are described in detail.
Visible light communication light source 104 for carrying data information in visible light signal, and sends visible light signal；
Reduced function device 106 is communicated with full-function device and/or is communicated with visible light communication light source, for receiving visible light
Signal is simultaneously demodulated to receiving visible light signal to recover data information；
Full-function device 102 is for realizing at least one following functions：The function of visible light communication light source, reduced function device
Function and the forwarding capability that the visible light signal received is forwarded.
In above-mentioned preferred embodiment, a kind of visible light communication system is provided, may include full work(in the system
Energy equipment, reduced function device either visible light communication light source etc., so as to form the communication of different frameworks according to demand
System is to meet different communication requirements.It solves through the above way and has not been used in visible light communication in the prior art
The technical issues of visible light resource is not fully utilized caused by network structure has reached the visible light utilization efficiency of raising
Technique effect.
Preferably, the visible light signal for carrying data information is the meat sent out by fluorescent lamp and/or light emitting diode
The high speed light and shade flash signal that eye can't see.
In view of signal lamp etc. sends particularity of the light source in network topology, visible light communication light source can be selected
It selects the relatively conventional luminaire such as these signal lamps and carries data information, to play the role of broadcast, i.e., above-mentioned visible light
Communication light source can send the visible light signal for carrying data information by way of broadcast.
In a preferred embodiment, since visible light communication light source is to require one naturally for broadcast singal
Coupled broadcast signal source further includes and the visible light communication light source phase in above-mentioned visible light communication system
Broadcast signal source even, for being sent to the visible light communication light source using signal to be broadcast as the data information.
If not considering the simplification of equipment, but more focus on the integrity in functions of the equipments, for the essence in system
Sending device can also be set in simple function device, for carrying data information in visible light signal, and sent described visible
Optical signal.That is, reduced function device can not only receive visible light signal, visible light signal can also be sent, to realize more
For comprehensive information exchange, and more comprehensively communication process.
Because what reduced function device was more still used as single node in a communications system, therefore in the same time
The interior reduced function device only receives the optical signal that the most one visible light communication light sources are sent or reception most one
The visible light signal that a full-function device is sent.
The work(of forwarding is also equipped with other than having the function of sending and receiving for the full-function device being mentioned above
Can, specifically, the full-function device receive full-function device in addition to itself send described in carry data letter
After the visible light signal of breath, the visible light signal received can be transmitted to one or more reduced function devices.On
It is only a preferred embodiment to state, and the invention is not limited thereto, some received can also be simplified work(by full-function device
The visible light signal that energy equipment is sent is transmitted to another reduced function device, or the visible light source that will be received
The reduced function device etc. that the visible light signal of transmission is transmitted to other full-function devices or is in communication with.
Traffic light is relatively conventional luminaire, therefore, in a preferred embodiment, in order to efficiently use
Traffic lights on road, can be using traffic light as visible light communication light source, to realize the purpose of broadcast.
In above-mentioned each preferred embodiment, reduced function device can be the equipment with camera function.For example, hand
Machine, camera, laptop etc. all can serve as reduced function device.
Specifically, visible light communication can be realized in the following way：User passes through hand-held control terminal or remote computation
The mode that machine logs in carries out the communication based on ICP/IP protocol with central processing unit, and Content of Communication includes：User wishes to controlled
The operational order etc. of equipment, central controller generate the binary coding of corresponding LED light modulation by the parsing to instruction
Stream, it is preferable that multiple transmitting modulators can be driven simultaneously；Transmitting modulator changes modulation LED into according to binary coding circulation
The on off state of the light intensity of lamp, to form the light intensity change sequence in time domain.In recipient, controlled user equipment passes through
Corresponding transformation and upgrade will be implanted reception demodulator, which detects the light and shade variation of LED isocandelas, and optical signal is turned
Electric signal is turned to, the microprocessing unit of demodulated equipment will generate corresponding control action according to the information received.
In order to better illustrate the present invention, following two preferred topological structures are given in embodiment to come further
Explanation.
1）As shown in Figure 1, the first is the network topology structure for carrying out wireless near field communication, each terminal device
Play the part of the role of different network nodes in a network, as shown in Fig. 2, the network topology structure includes mainly full-function device
And reduced function device, wherein
Full-function device（Full functional Device, referred to as FFD）, can both be used as coordinator
（coordinator）It uses, can also be used as simple node use；Full-function device can form arbitrary topology knot simultaneously
Structure, and can be communicated with any equipment.
Reduced function device（Reduced Functional Device, referred to as RFD）, can only make as single node
With, that is, reduced function device only can send or receive the ability for not having forwarding.
In the network topology that this kind only has thin device and full-function device, thin device only can be with full-function device
It is communicated, and can only be communicated with a full-function device in the same time.
That is, in the first topological structure, full-function device can both be used as network coordinator, can also be used as
Single node uses, and can be communicated with randomly topologically structured any node；Reduced function device can only make as single node
With, it can only be communicated with network coordinator, and cannot be communicated with single node.
For visible light communication, sending function is provided by visible light transmitter part, receive capabilities be from
What light receiving element provided, such as camera etc..Full-function device needs to be equipped with visible light transmission and receiving device, Yi Jizuo
For the network function of coordinator, and reduced function device only needs the transmission and receiving device for being equipped with visible light, or even a part
Reduced function device can only be equipped with reception device.
2）Particularity of the light source in network topology is sent based on signal lamp etc., the embodiment of the present invention additionally provides other one
Kind network topology structure, is mainly used in the scene of broadcasted application, as shown in figure 3, the network topology structure includes：Visible light
Communication light source, full-function device and reduced function device, wherein
Visible light communication light source, is connected with broadcast signal source, is broadcasted for the signal to broadcast system, only has transmission dress
It sets, without having the function of reception device and network coordinator.
Full-function device can both be used as coordinator（coordinator）It is used using can also be used as single node, it can be with
Form arbitrary topological structure, you can in any position of topological structure, can be carried out with all devices in system
Communication.
Reduced function device can only be used as single node, that is, be merely responsible for receiving or sending carrying data information
Visible light signal, however do not have the function of forwarding, star topology can be only formed in topological structure, in the same time
It inside only can be with 1 network coordinator（That is, 1 full-function device）Communicate either can only connect within the same time
Receive the visible light signal that a visible light communication light source is sent.
For visible light communication system, there is the scene similar to broadcasted application in many application scenarios, such as：It can
The light-exposed communication technology can be applied to traffic control system, and signal lamp can also believe road conditions while carrying out traffic instruction
Breath etc. information carries out broadcast transmission, for these broadcast light sources（That is, visible light communication light source）For, can only have hair
Device is sent, the functional device of reception device and network coordinator is not needed.For full-function device 102, as shown in figure 4, needing
It is functional to configure the institute such as sending device 402, reception device 404 and coordinator 406, wherein these configuration sending devices 402,
Reception device 404 and coordinator 406 with except the full-function device other full-function devices or reduced function device with
And visible light communication light source is communicated, thus into the forwarding of row information.
It should be noted, however, that two kinds of above-mentioned topological structures are only the preferred embodiment of the present invention, can also adopt
With other combinations, for example, whole network is all arranged full-function device, or can be in a small communication network
Full-function device and visible light communication light source are only set, or are provided only with visible light communication light source and reduced function device
Etc..
In another embodiment, a kind of software is additionally provided, the software is for executing above-described embodiment and preferred reality
Apply the technical solution described in mode.
In another embodiment, a kind of storage medium is additionally provided, above-mentioned software is stored in the storage medium, it should
Storage medium includes but not limited to：CD, floppy disk, hard disk, scratch pad memory etc..
It can be seen from the above description that the present invention realizes following technique effect：Provide a kind of visible light communication
System, may include full-function device, reduced function device either visible light communication light source etc. in the system, so as to
To form the communication system of different frameworks according to demand to meet different communication requirements.It solves through the above way existing
The technology that visible light resource caused by the network structure of visible light communication is not fully utilized is had not been used in technology to ask
Topic, has reached the technique effect of the visible light utilization efficiency of raising.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be with different from shown in sequence execution herein
The step of going out or describing, either they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and software knots
It closes.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (1)
1. a kind of novel visible communication system, which is characterized in that including：In full-function device and visible light communication light source extremely
One of few and reduced function device, wherein the visible light communication light source, for carrying data letter in visible light signal
Breath, and send the visible light signal；The reduced function device communicates and/or logical with visible light with the full-function device
Light source communication is believed, for receiving the visible light signal and being demodulated to receiving the visible light signal to recover
State data information；The full-function device is for realizing at least one following functions：The function of the visible light communication light source, institute
The forwarding capability stated the function of reduced function device and the visible light signal received is forwarded.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810704605.7A CN108736974A (en) | 2018-06-30 | 2018-06-30 | A kind of novel visible communication system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810704605.7A CN108736974A (en) | 2018-06-30 | 2018-06-30 | A kind of novel visible communication system |
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| CN108736974A true CN108736974A (en) | 2018-11-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111064513A (en) * | 2020-01-16 | 2020-04-24 | 新疆大学 | Visible light communication energy supply integrated network architecture |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111064513A (en) * | 2020-01-16 | 2020-04-24 | 新疆大学 | Visible light communication energy supply integrated network architecture |
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Application publication date: 20181102 |