CN204990752U - Communication device based on intelligent transportation prevents impact system - Google Patents
Communication device based on intelligent transportation prevents impact system Download PDFInfo
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- CN204990752U CN204990752U CN201520760643.6U CN201520760643U CN204990752U CN 204990752 U CN204990752 U CN 204990752U CN 201520760643 U CN201520760643 U CN 201520760643U CN 204990752 U CN204990752 U CN 204990752U
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Abstract
The utility model provides a communication device based on intelligent transportation prevents impact system, the utility model relates to an intelligent transportation system, it is less that it aims at solving current anticollision communication system existence information detection region, and the service of its high in the clouds intelligent transportation and wireless technology exist respectively actually to be experienced relatively poorly and technical problem such as potential safety hazard. The utility model discloses a structure includes field programmable gate array door module: accepting state clock signal, output control clock signal and/or communication clock signal, the visible light short -path signal transceiver of being connected with field programmable gate array door module: the light signal and the signal of telecommunication are changed, receive and/or send photoelectricity communication signals. The utility model is used for build the communication module of automobile collision avoidance system system.
Description
Technical field
The utility model relates to intelligent transportation system, is specifically related to a kind of communication device based on Intelligent traffic anti-collision system.
Background technology
Existing vehicle-mounted anticollision communication system, by integrated large quantity sensor, gathers travel condition of vehicle in road, analyzes the possibility that whether there is collision; Although high sensor can obtain precision data, it is very limited that it gathers distance, when the speed of a motor vehicle is in middle and high speed, cannot give warning in advance, even if or give warning in advance, driver does not have time enough to dodge fully yet, thus causes possible traffic hazard.Further, in high-end car system, high in the clouds intelligent transportation service is adopted to provide certain road early warning, but consider in actual use, in view of the complicacy of road, the existence of the technical matterss such as network popularization degree and connective stability, this technology is not able to better, more widely apply always.In addition, utilize the vehicle communication technology of Wireless Fidelity, although obtain certain early warning effect, easily there is crosstalk in frequency and the transportation network control frequency of adopting wireless fidelity technology, has safely potential potential safety hazard to public transport.Therefore, to expand and the mechanics of communication promoted between driving vehicle seems particularly important.
Summary of the invention
For above-mentioned prior art, the utility model object is to provide a kind of communication device based on Intelligent traffic anti-collision system, it is intended to solve existing collision avoidance system, and to there is information acquisition scope less, and its high in the clouds intelligent transportation service and wireless technology exist the technical matterss such as the poor and potential safety hazard of real experiences respectively.In addition, the utility model produces far-reaching technology enlightenment to unmanned automotive development.
For achieving the above object, the technical solution adopted in the utility model is as follows:
Based on a communication device for Intelligent traffic anti-collision system, comprise field programmable gate module: accepting state clock signal, export and control clock signal and/or communication clock signal; With the visible ray short-path signal transceiver of field programmable gate model calling: light signal and electric signal are changed, and receive and/or send photoelectric communication signal.
In such scheme, described visible ray short-path signal transceiver, comprises the optical fiber link with field programmable gate model calling: comprising signal transmitting path and Signal reception path; The ASIC be connected with optical fiber link: send and/or received code electric signal; Photoelectric communication device: light signal and/or electric signal are changed, receives and/or sends coded signal.
In such scheme, preferably, described coded signal, comprises the coded light signal with IEEE802.15.7 agreement definition Physical layer and medium access control layer; Also comprise the electric signal with encoded clock.
In such scheme, preferably, described optical fiber link, comprises signal transmitting path and Signal reception path.
In such scheme, preferably, field programmable gate module: at least export two electric signal, each electrical signal rate is at least greater than 1Gbps/s.Described signal transmitting path, comprises the first balanced device: connect field programmable gate module by hypervelocity Ethernet interface, receives electric signal; CDR & deserializer: receive the electric signal after the first equalizer compensation, carries out clock and data recovery and unstrings; Phase compensator: the electric signal receiving CDR & deserializer, carries out phase-fitting between the dynamic and stalic state electric signal; Serializer: the electric signal after the matching of receiving phase compensator, exports serial electric signal; Postemphasis driver: the electric signal receiving serializer, carries out postemphasising and amplifieroperation, exports electric signal; ASIC: connect the driver that postemphasises by physical medium associated layers interface.Balanced device can equivalent Hi-pass filter, to high communication number loss balancing in transmitting procedure, increases signal fidelity; High-speed serial signals is converted to parallel signal by deserializer, and CDR carries out recovery to clock in signal and data and encodes; Postemphasis driver, uses the amplitude of postemphasis mode holding signal rising edge and falling edge constant, and other ground square signals weaken, and adjustment signal to noise ratio (S/N ratio), increases signal fidelity.
In such scheme, preferably, described Signal reception path, comprises ASIC: receive the electric signal that photoelectric communication device LFC uploads; Second balanced device: receive the electric signal that ASIC sends the first balanced device in respective signal transmitting path; CDR: receive the electric signal after the second equalizer compensation, carries out clock and data recovery; Traffic pilot: receive the electric signal after CDR7 recovers, export at least two Half Speed electric signal; Postemphasis driver: the Half Speed electric signal receiving traffic pilot, carries out postemphasising and amplifieroperation.Field programmable gate module: connect the driver that postemphasises by hypervelocity Ethernet interface, at least receives two Half Speed electric signal.Traffic pilot makes full use of the capacity of communication channel, greatly reduces the cost of system.
In such scheme, preferably, described photoelectric communication device, comprises driver: connect ASIC by transfer bus, exports control signal; LED: the control signal receiving LED driver, sends light signal; Photodiode: receiving optical signals, is converted to electric signal; Trans-impedance amplifier: connect ASIC by transfer bus, receives the electric signal of photodiode, exports ASIC to.Realize the input and output of high frequency Fidelity signal, have more wide bandwidth and be not subject to control, trans-impedance amplifier structure is comparatively simple, and lower cost, can be mass and be installed in road street lamp.
The utility model beneficial effect: in real time and not via high in the clouds transport services, vehicle driving information near driving vehicle obtains; Communication frequency can not crosstalk public transport wireless frequency, expands communication bandwidth, and the high and communication efficiency of stability significantly promotes.
Accompanying drawing explanation
Fig. 1 is modular structure schematic diagram of the present utility model;
Fig. 2 is that collision avoidance system modular structure of the present utility model builds embodiment schematic diagram;
Fig. 3 is trans-impedance amplifier embodiment schematic diagram of the present utility model;
In figure: 1a_EQ, 1b_EQ-balanced device, 2_CDR & SER.-clock and data recovery and deserializer, 3_DSW-phase compensator, the serializer of 4_20Gbps & SER.-20Gbps speed, 5_DE. & Drive, 9_DE. & Drive-postemphasises driver, 6_ASIC-special IC, 7_CDR-clock and data recovery, 8_MUX-traffic pilot, 11_LEDDR.-LED drive, 12_TIA-trans-impedance amplifier, 13_LED-light emitting diode, 14_PIND., D1, D2, D3-photodiode, 17-field programmable gate module, Zpd-impedance, Vpd-impedance voltage, LFC-photoelectric communication device, CDR-clock and data recovery.
Embodiment
All features disclosed in this instructions, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is modular structure schematic diagram of the present utility model, and a kind of communication device based on Intelligent traffic anti-collision system, comprises field programmable gate module: accepting state clock signal, exports and controls clock signal and/or communication clock signal; With the visible ray short-path signal transceiver of field programmable gate model calling: light signal and electric signal are changed, and receive and/or send photoelectric communication signal.During use, the utility model communication device is mounted in various vehicle.
Embodiment 1
Fig. 2 is collision avoidance system modular structure embodiment schematic diagram of the present utility model, sensor: probe vehicle status signal output feedback signal; Vehicle data bus: the feedback signal of receiving sensor also exports vehicle condition clock signal; Remote information communication unit: comprising network access equipment and remote information control module, network access equipment and internet carry out information interaction and output signal to remote information control module and/or remote information control module input signal to network access equipment and internet; Remote information control module is also connected with vehicle data bus; Visible ray short-path signal transceiver: carry out information interaction with remote information control module.Described feedback signal, comprises the signal with automobile position longitude and latitude and/or driving speed information feature.Described optical fiber link, comprises signal transmitting path and Signal reception path.
Embodiment 2
Field programmable gate module 17: at least export two electric signal, each electrical signal rate is at least greater than 1Gbps/s.Signal transmitting path, comprises balanced device 1a: connect field programmable gate module 17 by hypervelocity Ethernet interface XLAUI, receives electric signal; CDR & deserializer 2: receive the electric signal after balanced device 1a compensation, carry out clock and data recovery and unstring; Phase compensator 3: the electric signal receiving CDR & deserializer 2, carries out phase-fitting between the dynamic and stalic state electric signal; Serializer 4: the electric signal after receiving phase compensator 3 matching, exports serial electric signal; Postemphasis driver 5: the electric signal receiving serializer 4, carries out postemphasising and amplifieroperation, exports electric signal; ASIC6: connect the driver 5 that postemphasises by physical medium associated layers interface PMD.
Embodiment 3
Signal reception path, comprises ASIC6: receive the electric signal that photoelectric communication device LFC uploads; Balanced device 1b: receive the electric signal that ASIC sends balanced device 1a in respective signal transmitting path; CDR7: receive the electric signal after balanced device 1b compensation, carry out clock and data recovery; Traffic pilot 8: receive the electric signal after CDR7 recovers, export at least two Half Speed electric signal; Postemphasis driver 9: the Half Speed electric signal receiving traffic pilot 8, carries out postemphasising and amplifieroperation.Field programmable gate module 17: connect the driver 9 that postemphasises by hypervelocity Ethernet interface XLAUI, at least receives two Half Speed electric signal.
Embodiment 4
Described photoelectric communication device LFC, comprises LED driver 11: connect ASIC6 by transfer bus, exports control signal; LED (13): the control signal receiving LED driver 11, sends light signal according to electric signal particular sequence pattern; PIN photodiode 14: receiving optical signals, is converted to electric signal; Trans-impedance amplifier 12: connect ASIC6 by transfer bus, receives the electric signal of PIN photodiode 14, exports ASIC6 to.
Embodiment 5
Fig. 3 is trans-impedance amplifier embodiment schematic diagram of the present utility model, and described trans-impedance amplifier 12 comprises 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 under high frequency input, effectively reduce input signal response modes because of impedance Z pd1, impedance Z pd2 cause feature weaken effect; Resistance R3 and resistance R4 can provide dot peak detection and increase bandwidth; D1, D2, D3 are the photodiode of line arrangement.
Embodiment 6
LED 13 lamp choosing wavelength is interval at 850nm, 1310nm, 1490nm, CW-DM, 1550nm, DWDM; LED quantity and arrangement comprise lattice array and/or linear array and/or face array and/or body arrangement; The mode of enabling is photoinduction startup, passive light startup, the selection of optoacoustic control combination technology, the mechanically integrated module of photoinduction and/or alternatives.
Embodiment 7
In communication process, based on above embodiment, LED 13 sends packet, and photodiode 14 completes clock synchronous by connecting ASIC6 across sufficient amplifier 12, ensures the time accuracy that sampling occurs; LED driver 11 arranges the light period of LED13 in advance, keeps and the photodiode 14 same cycle, sends single data delay and be no more than 3ms in one-period.In receiving course, when 1/4, LED13 of the leading LED13 light period of photodiode 14 clock sends logical zero (lower optical densities), photodiode 14 starts to sample 1; When LED13 sends logical one (high light intensity), photodiode 14 starts to sample 2, ASIC6 and compares two and sample and obtain coded message.In the utility model, the LED switching rate that " flickers " is very high, and " bright " duration is extremely short, and human eye can not be experienced, and can not have influence on vehicle driving safety.
There is unknown mutation in hardware advances, the progress of technology is the reference of selection standard.But for changing bad invention, or cost viewpoint, only from the selection of technical scheme of practicality.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly belong to those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.
Claims (7)
1. based on a communication device for Intelligent traffic anti-collision system, it is characterized in that, comprise
Field programmable gate module: accepting state clock signal, exports and controls clock signal and/or communication clock signal;
With the visible ray short-path signal transceiver of field programmable gate model calling: light signal and electric signal are changed, and receive and/or send photoelectric communication signal.
2. a kind of communication device based on Intelligent traffic anti-collision system according to claim 1, is characterized in that, described visible ray short-path signal transceiver, comprises
With the optical fiber link of field programmable gate model calling: comprising signal transmitting path and Signal reception path;
The ASIC be connected with optical fiber link: send and/or received code electric signal;
Photoelectric communication device: light signal and/or electric signal are changed, receives and/or sends coded signal.
3. a kind of communication device based on Intelligent traffic anti-collision system according to claim 2, is characterized in that, described coded signal, comprises the coded light signal with IEEE802.15.7 agreement definition Physical layer and medium access control layer; Also comprise the electric signal with encoded clock.
4. a kind of communication device based on Intelligent traffic anti-collision system according to claim 2, is characterized in that, described optical fiber link, comprises signal transmitting path and Signal reception path.
5. a kind of communication device based on Intelligent traffic anti-collision system according to claim 4, is characterized in that, described signal transmitting path, comprises
First balanced device: connect field programmable gate module by hypervelocity Ethernet interface, receives the electric signal that field programmable gate module sends;
CDR & deserializer: receive the electric signal after the first equalizer compensation, carries out clock and data recovery and unstrings;
Phase compensator: the electric signal receiving CDR & deserializer, carries out phase-fitting between the dynamic and stalic state electric signal;
Serializer: the electric signal after the matching of receiving phase compensator, exports serial electric signal;
Postemphasis driver: the electric signal receiving serializer, carries out postemphasising and amplifieroperation, exports electric signal;
ASIC: connect the driver that postemphasises by physical medium associated layers interface.
6. a kind of communication device based on Intelligent traffic anti-collision system according to claim 4, is characterized in that, described Signal reception path, comprises
ASIC: receive the electric signal that photoelectric communication device LFC uploads;
Second balanced device: receive the electric signal that ASIC sends the first balanced device in respective signal transmitting path;
CDR: receive the electric signal after the second equalizer compensation, carries out clock and data recovery;
Traffic pilot: receive the electric signal after CDR (7) recovers, export at least two Half Speed electric signal;
Postemphasis driver: the Half Speed electric signal receiving traffic pilot, carries out postemphasising and amplifieroperation.
7. a kind of communication device based on Intelligent traffic anti-collision system according to claim 2, is characterized in that, described photoelectric communication device, comprises
Driver: connect ASIC by transfer bus, exports control signal;
LED: the control signal receiving LED driver, sends light signal;
Photodiode: receiving optical signals, is converted to electric signal;
Trans-impedance amplifier: connect ASIC by transfer bus, receives the electric signal of photodiode, exports ASIC to.
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| CN201520760643.6U CN204990752U (en) | 2015-09-29 | 2015-09-29 | Communication device based on intelligent transportation prevents impact system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105225529A (en) * | 2015-09-29 | 2016-01-06 | 成都川睿科技有限公司 | A kind of communication device based on Intelligent traffic anti-collision system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105225529A (en) * | 2015-09-29 | 2016-01-06 | 成都川睿科技有限公司 | A kind of communication device based on Intelligent traffic anti-collision system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gao Yanli Inventor before: Wang Jiangtao |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170705 Address after: 100016 Beijing City, Chaoyang District Road No. 5 Building No. 30 room 115 Patentee after: Beijing Sheng Xin and Polytron Technologies Inc Address before: 611400 Chengdu Province, Xinjin City, Tianjin town, five Jin West Street, too up Patentee before: CHENGDU CHUANRUI SCIENCE & TECHNOLOGY CO., LTD. |