CN207425125U - A kind of visible light communication VLC intelligent transportation systems for supporting bilateral positioning - Google Patents
A kind of visible light communication VLC intelligent transportation systems for supporting bilateral positioning Download PDFInfo
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- CN207425125U CN207425125U CN201721372874.5U CN201721372874U CN207425125U CN 207425125 U CN207425125 U CN 207425125U CN 201721372874 U CN201721372874 U CN 201721372874U CN 207425125 U CN207425125 U CN 207425125U
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Abstract
The utility model discloses a kind of visible light communication VLC intelligent transportation systems for supporting bilateral positioning, including visible optical transceiver module of the visible optical transceiver module of vehicle side and street lamp side etc..Wherein, it is seen that optical transceiver module includes：Visible light communication dual-mode antenna (lens group) component, signal conditioning package, signal demodulation components, servo tracking component etc..The utility model can solve the problems, such as vehicle placement technology the most basic in intelligent transportation system：When vehicle is travelled in the road, visible light communication can be carried out with street lamp side.The visible light communication signal sent by receiving street lamp side, according to bilateral street lamp side visible light signal intensity contrast, you can judge whether vehicle is maintained at lane center (the track accurate location i.e. residing for vehicle).
Description
Technical field
The utility model is related to the device and method of intelligent transportation system application field, more particularly to a kind of support is bilateral fixed
Visible light communication (VLC) system between the vehicle and fixation means of position.
Background technology
Since mankind's utility model automobile, by the development of over one hundred year, the indispensable traffic work of people is had become
Tool.While vehicle is popularized, a series of problems, such as also bringing including congestion in road, traffic accident, exhaust emissions.In order to solve
These problems, industry propose the imagination of intelligent transportation system (ITS), and core is that people, vehicle, road etc. are combined closely association
Adjust, coordinate operation, with reference to the present computer technology, electronic technology, the communication technology and Optimized-control Technique etc., establish it is a wide range of,
Urban road total management system that is comprehensive, persistently playing a role, provides efficient, real-time, accurate road information, Neng Gouyou
Effect ground reduces the generation of traffic jam and accident.In the ITS solutions proposed at present, master is to be used including millimeter wave
Radar, short-distance wireless communication (IEEE802.11p), 3G/4G mobile communication etc., but all exist include radio spectrum resources be limited,
The shortcomings of real-time is poor, high cost [Pengju FANG, et al.A Visible Light Communication based
Infra-to-Vehicle Intelligent Transport Demo System.IEEE ICCVE2015]。
Visible light communication (VLC) technology is a kind of means of communication for having both illumination and communication, and core is by high-speed data
It is modulated on white light emitting diode (LED), since modulating frequency is high, illumination will not be had an impact.Receiving terminal uses light
It is demodulated to restore information after photodetector (PIN) or visual detector receive VLC signals.With traditional radio frequency band
Short-distance wireless communication is compared, it is seen that optical communication technique biggest advantage includes distributing without frequency spectrum resource, simultaneously because its work
Frequency range is high, can obtain very high signal transmission rate (up to Gb/s grades or higher).Academia and industrial quarters generally believe
It will be one of most promising solution [Jonathan Wells.Faster than in following short range access network environment
fiber:The future of multi-G/s wireless.IEEE Microwave Magazine,2009,Volume:
10,Issue:3]。
LED is widely regarded as the third generation lighting source after incandescent lamp and fluorescent lamp, at present including indoor photograph
It is generally used in bright, traffic lights and Vehicular illumination system, this is also established to promote LED based VLC systems
Good basis is determined.It will be seen that optical communication technique introduces intelligent transportation system application scenarios, vehicle and vehicle can be effectively solved
Between between (Vehicle-to-Vehicle, V2V) and vehicle and fixation means (Vehicle-to-Infrastructure,
V2I communication problem) realizes that vehicle movement position/track determines, Traffic Information early warning, vehicle lane change/collision avoid
Function.
In following intelligent transportation system, what is primarily solved is that vehicle automatic (intelligence) drives, the technological difficulties of core
It is accurate vehicle location problem, it is seen that optical communication technique is provided for reliable solution.
Utility model content
A kind of visible light communication (VLC) intelligent transportation system for supporting bilateral positioning of proposition of the utility model, can be with
Two-way communication is carried out between vehicle and Transportation facilities, and it is the most basic and important in intelligent transportation system to solve
Vehicle be accurately positioned problem.
To solve the problems, such as the targeted vehicle placement technology of the utility model, use and support the visible of bilateral positioning
Optical communication system mainly includes：Visible optical transceiver module of the visible optical transceiver module of vehicle side and street lamp side etc..Wherein, it is seen that light is received
Hair module includes：Visible light communication dual-mode antenna (lens group) component, signal conditioning package, signal demodulation components, servo tracking
Component etc..Input signal component is sent after the signal of input is carried out necessary format conversion to modulation module, and modulation module will be defeated
Enter signal modulation to laser assembly and generate visible light signal, then converged via lens group component and be sent to freedom to defocused
Space channel；After receiving side lens group component receives visible light signal, electric signal is reduced to by detector, and by solving
Tune/amplifier module carries out signal demodulation and amplification, finally via output signal component output.Servo tracking component can basis
The big minor adjustment lens group component of visible light signal intensity received, makes it be directed at the most strong direction of visible light signal always.
The visible light communication module refers to be arranged respectively at the complete of the Transportation facilities such as vehicle side and street lamp side
Into the communication module of visible light communication signal transmitting and receiving, the information that needs can be sent is converted into visible light signal and launches
It removes and receives visible light signal and therefrom restore raw information.
Visible light communication dual-mode antenna (lens group) component, can be changed into the signal after input modulates information can
See optical signal, and pass through transmission antenna (sending lens subassembly) and be sent to space channel；Reception antenna (i.e. receiving lens group
Part) can detect with the visible light signal in reception space channel, and be demodulated after being converted into electric signal, restore original
Beginning information.
The signal conditioning package, the information that can be sent to needs are handled and are added into the load of visible light frequency band
On ripple, so that it becomes being suitable for the form of space channel transmission.
The signal demodulation components, the electric signal that can be received to dual-mode antenna (lens group) component and complete conversion carry out
Demodulation, restores the raw information wherein carried.
The servo tracking component is mounted on vehicle side, it is visible can to track the Transportation facilities such as street lamp side
The visible light signal that optical communications module is sent, and receive signal condition according to caused by state of motion of vehicle and adjusted in due course,
Ensure vehicle side and the normal communication of street lamp side visible light communication signal.
Description of the drawings
Fig. 1 be the bilateral positioning of support of the utility model visible light communication (VLC) intelligent transportation system in visible ray receive
Send out module composition schematic diagram.
Fig. 2 is visible light communication (VLC) the intelligent transportation system typical case field of the bilateral positioning of support of the utility model
Scape schematic diagram.
Fig. 3 is visible light communication (VLC) intelligent transportation system vehicle side module of the bilateral positioning of support of the utility model
Unit composition schematic diagram.
Fig. 4 is that visible light communication (VLC) intelligent transportation system vehicle location of the bilateral positioning of support of the utility model is sentenced
Certainly and adjustment flow chart.
Specific embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
Visible light communication (VLC) intelligent transportation system of the bilateral positioning of support of the utility model is handed over to solve this intelligence
Vehicle placement technology problem the most basic, uses and supports that the visible light communication system of bilateral positioning is main in way system
Including：Visible optical transceiver module of the visible optical transceiver module of vehicle side and street lamp side etc..Wherein, it is seen that optical transceiver module includes：It can
See optic communication dual-mode antenna (lens group) component, signal conditioning package, signal demodulation components, servo tracking component etc..This practicality
Based on the visible light communication system that the system of new proposition can be between vehicle side and street lamp side, the exact position of vehicle is realized
Positioning.
The utility model is described in detail by taking typical case scene as an example below：
As shown in Figure 1, the utility model proposes the bilateral positioning of support visible light communication (VLC) intelligent transportation system knot
Structure block diagram, mainly includes：Visible optical transceiver module of the visible optical transceiver module of vehicle side and street lamp side etc..Wherein, it is seen that light is received and dispatched
Module includes：Visible light communication dual-mode antenna (lens group) component, signal conditioning package, signal demodulation components, servo tracking group
Part etc..
As shown in Fig. 2, when vehicle is travelled in the road, it can communicate with street lamp side, that is, it is visible to receive street lamp side
The signal that optical transceiver module is sent.Lead to as shown in figure 3, the visible optical transceiver module of vehicle side receives the visible ray that street lamp side is sent
After believing signal, the signal that the visible light receiving unit of arranged on left and right sides receives is after opto-electronic conversion, via pre-amplifier unit, work(
After rate balanced unit, shaping filter cell processing, while feeding compares decision unit and is compared, and comparative result is through main control unit
It is exported after processing.Accordingly, according to bilateral street lamp side visible light signal intensity contrast, you can judge whether vehicle is maintained in track
Heart line (the track accurate location i.e. residing for vehicle), workflow is as shown in Figure 4.
Embodiment described above is only that the preferred embodiments of the utility model are described, not new to this practicality
The scope of type is defined, and on the premise of the spirit of the design of the utility model is not departed from, those of ordinary skill in the art are to this reality
The modification and improvement made with new technical solution should all fall into the protection domain that claims of the utility model determine
It is interior.
Claims (1)
1. a kind of visible light communication VLC intelligent transportation systems for supporting bilateral positioning, which is characterized in that including：Vehicle side is visible
The visible optical transceiver module of optical transceiver module and street lamp side；The visible optical transceiver module of vehicle side is completed with street lamp side visible ray intermodule
Two-way communication, the i.e. visible optical transmission module in street lamp side can send visible light signal to vehicle side and receive, the visible optical mode of vehicle side
Block sends visible light signal to street lamp side joint and receives；
The visible optical transceiver module includes：Visible light communication dual-mode antenna, that is, lens group component, signal conditioning package, signal solution
Adjust component, servo tracking component；Input signal component is sent after the signal of input is carried out necessary format conversion to modulation module,
Input signal is modulated to laser assembly and generates visible light signal, then carries out convergence focusing via lens group component by modulation module
After be sent to free space channel；After receiving side lens group component receives visible light signal, electricity is reduced to by detector
Signal, and signal demodulation and amplification are carried out by demodulation/amplifier module, finally via output signal component output；Servo tracking
Component can make it be directed at visible light signal always most according to the big minor adjustment lens group component of the visible light signal intensity received
Strong direction；
The visible light communication module, the information that needs are sent are converted into visible light signal and launch and receive visible
Optical signal simultaneously therefrom restores raw information；
Signal after input modulates information is changed into visible ray letter by the visible light communication dual-mode antenna, that is, lens group component
Number, and pass through transmission antenna and send lens subassembly and be sent to space channel；It reception antenna, that is, receiving lens component detection and connects
The visible light signal in space channel is received, and is demodulated after being converted into electric signal, restores raw information；
The signal conditioning package handles the information that needs are sent and is added on the carrier wave of visible light frequency band, made
It is become suitable in the form of space channel transmission；
The signal demodulation components, the electric signal for being received to dual-mode antenna, that is, lens group component and completing conversion are demodulated, also
Original goes out the raw information wherein carried；
The servo tracking component, mounted on vehicle side, the Transportation facilities side visible light communication module such as tracking street lamp
The visible light signal sent, and receive signal condition according to caused by state of motion of vehicle and adjusted in due course, ensure vehicle side
With the normal communication of street lamp side visible light communication signal.
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| CN201721372874.5U CN207425125U (en) | 2017-10-24 | 2017-10-24 | A kind of visible light communication VLC intelligent transportation systems for supporting bilateral positioning |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107909853A (en) * | 2017-10-24 | 2018-04-13 | 南京邮电大学 | Support visible light communication (VLC) intelligent transportation system of bilateral positioning |
| CN109150303A (en) * | 2018-10-30 | 2019-01-04 | 东南大学 | A kind of urban road laser communication method and system |
| CN113724516A (en) * | 2020-05-25 | 2021-11-30 | 苏州中明光电有限公司 | System for transmitting emergency traffic events |
-
2017
- 2017-10-24 CN CN201721372874.5U patent/CN207425125U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107909853A (en) * | 2017-10-24 | 2018-04-13 | 南京邮电大学 | Support visible light communication (VLC) intelligent transportation system of bilateral positioning |
| CN109150303A (en) * | 2018-10-30 | 2019-01-04 | 东南大学 | A kind of urban road laser communication method and system |
| CN109150303B (en) * | 2018-10-30 | 2022-06-21 | 东南大学 | Urban road laser communication method and system |
| CN113724516A (en) * | 2020-05-25 | 2021-11-30 | 苏州中明光电有限公司 | System for transmitting emergency traffic events |
| CN113724516B (en) * | 2020-05-25 | 2023-08-11 | 苏州中明光电有限公司 | System for transmitting emergency traffic event |
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