CN105225529B - A kind of communication device based on Intelligent traffic anti-collision system - Google Patents
A kind of communication device based on Intelligent traffic anti-collision system Download PDFInfo
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- CN105225529B CN105225529B CN201510630137.XA CN201510630137A CN105225529B CN 105225529 B CN105225529 B CN 105225529B CN 201510630137 A CN201510630137 A CN 201510630137A CN 105225529 B CN105225529 B CN 105225529B
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Abstract
A kind of communication device based on Intelligent traffic anti-collision system, the present invention relates to intelligent transportation system, it aims to solve the problem that existing anticollision communication system existence information acquisition range is smaller, and its high in the clouds intelligent transportation service and wireless technology are respectively present that real experiences are poor and the technical problem such as potential safety hazard.The inventive structure includes field programmable gate module：Reception state clock signal, output control clock signal and/or communication clock signal；The visible ray short-path signal transceiver being connected with field programmable gate module：Optical signal and electric signal are changed, and receive and/or send photoelectric communication signal.The present invention is used for the communication module for building car collision avoidance System.
Description
Technical field
The present invention relates to intelligent transportation system, and in particular to a kind of communication device based on Intelligent traffic anti-collision system.
Background technology
Existing vehicle-mounted anticollision communication system, by integrating big quantity sensor, gather travel condition of vehicle in road, analysis
With the presence or absence of the possibility of collision；Although high sensor can obtain precision data, its collection distance is very limited,
It when speed is in middle and high fast, can not give warning in advance, or even give warning in advance, driver is also carried out without time enough
Fully avoid, so as to cause possible traffic accident.Further, in high-end car system, using high in the clouds intelligent transportation service
Certain road early warning is provided, but considered in actual use, in view of the complexity of road, network popularization degree and connective stability
Etc. the presence of technical problem, the technology is not able to apply preferable, widely always.In addition, led to using the vehicle of Wireless Fidelity
News technology, although obtaining certain early warning effect, frequency and the transportation network control frequency of adopting wireless fidelity technology easily occur
Crosstalk, there is potential potential safety hazard safely to public transport.Therefore, the mechanics of communication expanded and lifted between driving vehicle seems
It is particularly important.
The content of the invention
For above-mentioned prior art, present invention aims at provide a kind of communication dress based on Intelligent traffic anti-collision system
Put, it aims to solve the problem that existing collision avoidance system existence information acquisition range is smaller, its high in the clouds intelligent transportation service and wireless technology
It is respectively present that real experiences are poor and the technical problem such as potential safety hazard.In addition, the present invention is far-reaching to the generation of unmanned automotive development
Technical inspiration.
To reach above-mentioned purpose, the technical solution adopted by the present invention is as follows：
A kind of communication device based on Intelligent traffic anti-collision system, including field programmable gate module：Receive shape
State clock signal, output control clock signal and/or communication clock signal；It is connected with field programmable gate module visible
Light short-path signal transceiver：Optical signal and electric signal are changed, and receive and/or send photoelectric communication signal.
In such scheme, described visible ray short-path signal transceiver, including be connected with field programmable gate module
Fiber link：Including signal transmitting path and signal receiving path；The ASIC being connected with fiber link:Send and/or
Receive coded electrical signal；Photoelectric communication device：Optical signal and/or electric signal are changed, and receive and/or send encoded signal.
In such scheme, it is preferable that described encoded signal, including with IEEE802.15.7 protocol definitions physical layer and
The coded light signal of medium access control layer；Also include the electric signal with encoded clock.
In such scheme, it is preferable that described fiber link, including signal transmitting path and signal receiving path.
In such scheme, it is preferable that field programmable gate module：At least export two electric signals, each electric signal
Speed is at least above 1Gbps/s.Described signal transmitting path, including the first balanced device：Connected by ultrahigh speed Ethernet interface
Field programmable gate module is connect, receives electric signal；CDR＆ deserializers：The electric signal after the first equalizer compensation is received, is entered
Row clock and data recovery are simultaneously unstringed；Phase compensator：The electric signal of CDR＆ deserializers is received, between dynamic and static electric signal
Carry out phase-fitting；Serializer：Electric signal after the fitting of receiving phase compensator, exports serial electric signal；Postemphasis driver：
The electric signal of serializer is received, is postemphasised and amplifieroperation, exports electric signal；ASIC：Connect by physical medium associated layers
Mouth connects the driver that postemphasises.Balanced device can equivalent high-pass filter, to high communication number loss balancing in transmitting procedure, increase letter
Number fidelity；High-speed serial signals are converted to parallel signal by deserializer, and CDR carries out recovery volume to clock in signal and data
Code；Postemphasis driver, keeps the amplitude of signal rising edge and falling edge constant using the mode of postemphasising, elsewhere signal
Weaken, adjust signal to noise ratio, increase signal fidelity.
In such scheme, it is preferable that described signal receiving path, including ASIC：Photoelectric communication device LFC is received to upload
Electric signal；Second balanced device：Reception ASIC sends the electric signal to the first balanced device in induction signal transmitting path；CDR：Receive
Electric signal after second equalizer compensation, carry out clock and data recovery；Multiplexer：Receive the telecommunications after CDR7 recovers
Number, export at least two Half Speed electric signals；Postemphasis driver:The Half Speed electric signal of multiplexer is received, is postemphasised
And amplifieroperation.Field programmable gate module：The driver that postemphasises is connected by ultrahigh speed Ethernet interface, at least received
Two Half Speed electric signals.Multiplexer makes full use of the capacity of communication channel, substantially reduces the cost of system.
In such scheme, it is preferable that described photoelectric communication device, including driver：ASIC is connected by transfer bus,
Output control signal；LED：The control signal of LED driver is received, sends optical signal；Photodiode：Optical signal is received, is turned
It is changed to electric signal；Trans-impedance amplifier：ASIC is connected by transfer bus, the electric signal of photodiode is received, exports to ASIC.
High frequency Fidelity signal input and output to be realized, there is more wide bandwidth and not by control, trans-impedance amplifier structure is simpler,
Lower cost, it can be mass and be installed in road street lamp.
Beneficial effect of the present invention：In real time and not via high in the clouds transport services, driving vehicle obtains vehicle driving letter nearby
Breath；Communication frequency will not crosstalk public transport wireless frequency, expand communication bandwidth, stability is high and communication efficiency is obviously improved.
Brief description of the drawings
Fig. 1 is the modular structure schematic diagram of the present invention；
The collision avoidance system modular structure that Fig. 2 is the present invention builds embodiment schematic diagram；
Fig. 3 is the trans-impedance amplifier embodiment schematic diagram of the present invention；
In figure：1a-EQ, 1b-EQ are balanced device, and 2-CDR＆SER is clock and data recovery and deserializer, and 3-DSW is phase
Compensator, 4-20Gbps＆SER. are the serializer of 20Gbps speed, and 5-DE.＆Drive, 9-DE.＆Drive are driving of postemphasising
Device, 6-ASIC are application specific integrated circuit, and 7-CDR is clock and data recovery, and 8-MUX is multiplexer, and 11-LED DR are i.e. luminous
Diode (led) driver, 12-TIA are trans-impedance amplifier, and 13-LED is light emitting diode, 14-PIN D., D1, D2, D3- photoelectricity two
Pole pipe, 17- field programmable gate modules, Zpd- impedances, Vpd- impedance voltages, LFC- photoelectric communication devices, CDR- clocks
Data recovery.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
The present invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 be the present invention modular structure schematic diagram, a kind of communication device based on Intelligent traffic anti-collision system, including
Field programmable gate module：Reception state clock signal, output control clock signal and/or communication clock signal；With showing
The visible ray short-path signal transceiver of field programmable gate module connection：Optical signal and electric signal are changed, receive and/or
Send photoelectric communication signal.In use, communication device of the present invention is attached in various vehicles.
Embodiment 1
Fig. 2 be the present invention collision avoidance system modular structure embodiment schematic diagram, sensor：Probe vehicle status signal is simultaneously
Output feedback signal；Vehicle data bus：Receive the feedback signal of sensor and export vehicle condition clock signal；Remote information
Communication unit：Including network access equipment and remote information control unit, network access equipment enters row information with internet
Interact and output signal to remote information control unit and/or remote information control unit input signal to network access equipment with
Internet；Remote information control unit is also connected with vehicle data bus；Visible ray short-path signal transceiver：With remote information control
Unit processed carries out information exchange.Described feedback signal, including with automobile position longitude and latitude and/or driving speed information feature
Signal.Described fiber link, including signal transmitting path and signal receiving path.
Embodiment 2
Field programmable gate module 17：At least export two electric signals, each electrical signal rate at least above
1Gbps/s.Signal transmitting path, including balanced device 1a：Pass through ultrahigh speed Ethernet interface XLAUI connection field programmable logics
Door module 17, receives electric signal；CDR＆ deserializers 2：The electric signal after balanced device 1a compensation is received, carries out clock and data recovery
And unstring；Phase compensator 3：The electric signal of CDR＆ deserializers 2 is received, phase-fitting is carried out between dynamic and static electric signal；
Serializer 4：Electric signal after the fitting of receiving phase compensator 3, exports serial electric signal；Postemphasis driver 5：Receive serializer
4 electric signal, is postemphasised and amplifieroperation, exports electric signal；ASIC6：Layer interface PMD connections are associated by physical medium
Postemphasis driver 5.
Embodiment 3
Signal receiving path, including ASIC6：Receive the electric signal that photoelectric communication device LFC is uploaded；Balanced device 1b：Receive
ASIC sends the electric signal to balanced device 1a in induction signal transmitting path；CDR7：The electric signal after balanced device 1b compensation is received, is entered
Row clock and data recovery；Multiplexer 8：The electric signal after CDR7 recovers is received, exports at least two Half Speed electric signals；
Postemphasis driver 9:The Half Speed electric signal of multiplexer 8 is received, is postemphasised and amplifieroperation.Field programmable logic
Door module 17：Postemphasised driver 9 by the XLAUI connections of ultrahigh speed Ethernet interface, at least receive two Half Speed electric signals.
Embodiment 4
Described photoelectric communication device LFC, including LED driver 11：ASIC6, output control are connected by transfer bus
Signal；LED13：The control signal of LED driver 11 is received, optical signal is sent according to electric signal particular sequence pattern；PIN photoelectricity
Diode 14：Optical signal is received, is converted to electric signal；Trans-impedance amplifier 12：ASIC6 is connected by transfer bus, receives PIN light
The electric signal of electric diode 14, export to ASIC6.
Embodiment 5
Fig. 3 is the trans-impedance amplifier embodiment schematic diagram of the present invention, described trans-impedance amplifier 12, including cross-linked
First couple of differential input transistor Q1, Q2 and second couple of differential input transistor Q3, Q4；Each transistor base is connected with electric capacity,
Grounded emitter；Cross-coupled manner can effectively reduce input signal response modes because of impedance Z pd1, impedance under high frequency input
Feature caused by Zpd2 weakens effect；Resistance R3 and resistance R4 can provide dot peak detection and increase bandwidth；D1, D2, D3
For the photodiode of line arrangement.
Embodiment 6
The optional range of wavelengths of the lamp of LED 13 is in 850nm, 1310nm, 1490nm, CW-DM, 1550nm, DWDM；
LED quantity and arrangement include lattice array and/or linear array and/or face array and/or body arrangement；Enable mode
It is photoinduction startup, passive photopolymerization initiation, optoacoustic control combination technology, the mechanically integrated module of photoinduction and/or the optional choice of technology.
Embodiment 7
In communication process, based on above example, LED 13 sends packet, and photodiode 14 is logical
Cross and complete the time accuracy that clock is synchronous, and guarantee sampling occurs across sufficient amplifier 12 connection ASIC6；LED driver 11 shifts to an earlier date
LED13 light period is set, keeps being no more than with 14 same cycle of photodiode, the interior single data delay of transmission of a cycle
3ms.In receive process, 1/4, LED13 of the leading LED13 light periods of the clock of photodiode 14 sends logical zero (low light
Density) when, photodiode 14 starts sampling 1；When LED13 sends logical one (high light intensity), photodiode 14 starts to take
Sample 2, ASIC6 compare two and sample and obtain coding information.The LED switching rates that " flicker " are very high in the present invention, and " bright " continue
Time is extremely short, and human eye can not be experienced, and not interfere with vehicle driving safety.
There is unknown mutation in hardware advances, and the progress of technology is the reference of selection standard.But it is in order at and changes bad invention,
Or cost viewpoint, only from the selection of technical scheme of practicality.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Belong to those skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in, all should
It is included within the scope of the present invention.
Claims (3)
- A kind of 1. communication device based on Intelligent traffic anti-collision system, it is characterised in that includingField programmable gate module：Reception state clock signal, output control clock signal and/or communication clock signal；The visible ray short-path signal transceiver being connected with field programmable gate module：Optical signal and electric signal are changed, Receive and/or send photoelectric communication signal；Described visible ray short-path signal transceiver, including the fiber link being connected with field programmable gate module, optical fiber Link is including signal transmitting path and signal receiving path；Described visible ray short-path signal transceiver, including the ASIC being connected with fiber link, ASIC send and/or received coding Electric signal；Described visible ray short-path signal transceiver, in addition to photoelectric communication device, photoelectric communication device be used for optical signal and/or Electric signal is changed and is additionally operable to receive and/or send encoded signal；Described signal transmitting path, including：First balanced device：Field programmable gate module is connected by ultrahigh speed Ethernet interface and receives field-programmable and is patrolled The electric signal that door module is sent is collected,CDR＆ deserializers：Receive the electric signal after the first equalizer compensation and carry out clock and data recovery and unstring,Phase compensator：Receive the electric signal of CDR＆ deserializers and carry out phase-fitting between dynamic and static electric signal,Serializer：Electric signal and output serial electric signal after the fitting of receiving phase compensator,Postemphasis driver：Receive the electric signal of serializer, postemphasised and amplifieroperation and output electric signal, andASIC：Layer interface is associated by physical medium and connects the driver that postemphasises；Described signal receiving path, including：ASIC：The electric signal that photoelectric communication device LFC is uploaded is received,Second balanced device：Reception ASIC sends the electric signal to the first balanced device in induction signal transmitting path,CDR：Receive the electric signal after the second equalizer compensation and carry out clock and data recovery,Multiplexer：The electric signal after CDR7 recovers and at least two Half Speed electric signals of output are received, andPostemphasis driver:Receive the Half Speed electric signal of multiplexer and postemphasised and amplifieroperation.
- 2. a kind of communication device based on Intelligent traffic anti-collision system according to claim 1, it is characterised in that described Encoded signal, including the coded light signal with IEEE802.15.7 protocol definitions physical layer and medium access control layer；Also Including the electric signal with encoded clock.
- 3. a kind of communication device based on Intelligent traffic anti-collision system according to claim 1, it is characterised in that described Photoelectric communication device, includingDriver：ASIC, output control signal are connected by transfer bus；LED：The control signal of LED driver is received, sends optical signal；Photodiode：Optical signal is received, is converted to electric signal；Trans-impedance amplifier：ASIC is connected by transfer bus, the electric signal of photodiode is received, exports to ASIC.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510630137.XA CN105225529B (en) | 2015-09-29 | 2015-09-29 | A kind of communication device based on Intelligent traffic anti-collision system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510630137.XA CN105225529B (en) | 2015-09-29 | 2015-09-29 | A kind of communication device based on Intelligent traffic anti-collision system |
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| CN105225529A CN105225529A (en) | 2016-01-06 |
| CN105225529B true CN105225529B (en) | 2018-01-19 |
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| CN108880677A (en) * | 2018-04-26 | 2018-11-23 | 卢思雨 | A kind of long range intelligent transportation system aggravated based on data |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485993A (en) * | 2014-11-25 | 2015-04-01 | 南昌大学 | Vehicular visible light wireless digital voice communication system |
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| JP4998071B2 (en) * | 2007-04-27 | 2012-08-15 | 住友電気工業株式会社 | Road-to-vehicle communication system, in-vehicle device, vehicle and traffic signal controller |
| US8773281B2 (en) * | 2009-09-15 | 2014-07-08 | Ohanes D. Ghazarian | Intersection vehicle collision avoidance system |
| CN103684597A (en) * | 2013-11-19 | 2014-03-26 | 北京邮电大学 | FPGA-based visible light video communication system and method |
| US9553670B2 (en) * | 2014-03-03 | 2017-01-24 | Inphi Corporation | Optical module |
| CN204990752U (en) * | 2015-09-29 | 2016-01-20 | 成都川睿科技有限公司 | Communication device based on intelligent transportation prevents impact system |
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| CN104485993A (en) * | 2014-11-25 | 2015-04-01 | 南昌大学 | Vehicular visible light wireless digital voice communication system |
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| CB03 | Change of inventor or designer information |
Inventor after: Lu Hongqiang Inventor after: Wang Zhaoqiang Inventor after: Xu Yuxiao Inventor after: Zhang Zhonglei Inventor after: Gao Shangkun Inventor after: Wang Anhua Inventor before: Wang Jiangtao |
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Effective date of registration: 20171227 Address after: Shenzhen Road, Laoshan District 266000 Shandong city of Qingdao province Tiantai No. 222 Financial Plaza A block 13 layer Applicant after: Lu Hongqiang Address before: 611400 Chengdu Province, Xinjin City, Tianjin town, five Jin West Street, too up Applicant before: CHENGDU CHUANRUI SCIENCE & TECHNOLOGY CO., LTD. |
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Granted publication date: 20180119 Termination date: 20180929 |