CN105225531B - A kind of intelligent transportation anti-collision equipment using data first in first out - Google Patents
A kind of intelligent transportation anti-collision equipment using data first in first out Download PDFInfo
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- CN105225531B CN105225531B CN201510630157.7A CN201510630157A CN105225531B CN 105225531 B CN105225531 B CN 105225531B CN 201510630157 A CN201510630157 A CN 201510630157A CN 105225531 B CN105225531 B CN 105225531B
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Abstract
A kind of intelligent transportation anti-collision equipment using data first in first out, the present invention relates to intelligent transportation systems, it aims to solve the problem that existing collision avoidance system is smaller in the presence of detection, acquisition range, Adjacent vehicles driving information cannot be directly acquired, high in the clouds intelligent transportation service and wireless technology are respectively present that real experiences are poor and the technical problems such as security risk.The inventive structure includes remote information communication unit：Including network access equipment and remote information control unit；Network access equipment：Including digital signal processing unit；Remote information control unit：It include the field programmable gate module being connect with digital signal processing unit；Visible light short-path signal transceiver：Information exchange is carried out with remote information control unit；It further include the laser radar being connect with remote information communication unit：Lens array is arranged including the line arrangement lens array knead dough being applied in combination.The present invention is used for vehicle anticollision.
Description
Technical field
The present invention relates to intelligent transportation systems, and in particular to a kind of to be set using the intelligent transportation anticollision of data first in first out
It is standby.
Background technology
Existing vehicle-mounted collision avoidance system acquires travel condition of vehicle in road, analyses whether by integrating big quantity sensor
There are the possibility of collision；Although high sensor can obtain precision data, its acquisition distance is very limited, in speed
It when in middle and high speed, can not give warning in advance, or even give warning in advance, driver also carries out without time enough abundant
Ground avoids, to cause possible traffic accident.Further, it in high-end vehicle system, is serviced and is provided using high in the clouds intelligent transportation
Certain road early warning, but consider in actual use, in view of the complexity of road, the skills such as network popularization degree and connective stability
The presence of art problem, the technology are not able to apply preferable, widely always.In addition, utilizing the vehicle communication skill of Wireless Fidelity
Art, although obtaining certain early warning effect, frequency and the transportation network control frequency of adopting wireless fidelity technology are easy to happen crosstalk,
There is safely potential security risk to public transport.Conventionally used laser radar sensor, before detection is longer-distance
Square barrier simultaneously has narrow field range, can not incude the vehicle abruptly entered on the track of side.That is, recently, in addition to knowing
The barrier of other vehicle front, being injected suddenly under the insertion situation come to side track has broader field range and identifies
The demand of the laser radar sensor of vehicle is being continuously increased.Currently, due to obtaining a large amount of sensing datas and other information data,
The mode that middle control processing is taken actively is visited by digital signal processing unit only using field-programmable module as wiring channel
Ask the external memory of field-programmable module connection, this causes data continuity to be deteriorated.But if only scene can be compiled
Journey module is as wiring channel, then the operation (such as modulus operation in Radar Signal Processing) in some applications can only be in number
It is carried out inside signal processing unit, to the processing time of meeting compression digital signal processing unit, increases Digital Signal Processing list
The Real-time Design difficulty of member, thus the data transmission being difficult to ensure between field-programmable module and digital signal processing unit
Continuity.Therefore, it expands and the mechanics of communication promoted between driving vehicle is particularly important.
Invention content
For the above-mentioned prior art, present invention aims at provide a kind of intelligent transportation anti-collision using data first in first out
Equipment is hit, aims to solve the problem that existing collision avoidance system is smaller in the presence of detection, acquisition range, Adjacent vehicles traveling cannot be directly acquired
Information, high in the clouds intelligent transportation service and wireless technology are respectively present that real experiences are poor and the technical problems such as security risk.This
Outside, the present invention generates unmanned automotive development far-reaching technical inspiration.
In order to achieve the above objectives, the technical solution adopted by the present invention is as follows：
A kind of intelligent transportation anti-collision equipment using data first in first out, including sensor：Probe vehicle status signal
And export feedback signal；Vehicle data bus：The feedback signal of receiving sensor simultaneously exports vehicle condition clock signal；Long-range letter
Cease communication unit：Including network access equipment and remote information control unit, network access equipment carries out letter with internet
Breath interaction simultaneously outputs 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 connect with vehicle data bus；Network access equipment：Including Digital Signal Processing list
Member；Remote information control unit：The field programmable gate module being connect with digital signal processing unit；Field-programmable is patrolled
It includes that memory reading and writing control unit, data processing unit, asynchronous FIFO unit, synchronous FIFO unit and data are read to collect door module
Write detection unit；The memory reading and writing control unit is used to read the data of predetermined unit from external memory, and will be per single
The data of position are sequentially sent to data processing unit；Data processing unit is asynchronous for being sent into after handling the data of per unit
Cell fifo；Asynchronous FIFO unit is used to be sent into synchronous FIFO unit after carrying out clock domain conversion to the data of predetermined unit；Together
Step cell fifo is used to cache the data of asynchronous FIFO unit feeding, and when the data of caching reach predetermined unit, to number
Signal processing unit sends out interrupt signal；Digital signal processing unit is used to read number from synchronous FIFO unit according to interrupt signal
According to；Reading and writing data detection unit is used for when detecting that digital signal processing unit has often read the data of a unit, Xiang Cun
Reservoir read-write control unit sends out feedback signal so that memory reading and writing control unit according to feedback signal from external memory
The data for reading next unit improve the stability of data transmission；Visible light short-path signal transceiver：With it is long-range
Information control unit carries out information exchange；Further include the laser radar being connect with remote information communication unit, the laser thunder
It reaches, including transmitter unit：It include the transmission lens array of the left and right side regional divergence laser to vehicle front region and vehicle；
And receiving unit：The reception of reflected light including the left and right side region reflection for receiving the vehicle front region and the vehicle
Transmission lens array described in lens array and/or receiving lens array, including symmetrical line arrangement lens array and place
Lens array is arranged in the face of symmetrical central area.
In said program, it is preferable that the sensor, including alignment sensor and/or tachogenerator.Real-time detection
The velocity information and/or location information of automobile.
In said program, it is preferable that the feedback signal, including with automobile position longitude and latitude and/or travel speed
The signal of information characteristics.
In said program, it is preferable that the vehicle data bus is connected with danger button.In, lower security collision grade
When other, provide user and alarm optionally through remote information communication unit；When height collision rank, remote information communication unit
Automatic alarm.
In said program, it is preferable that
In said program, it is preferable that the network access equipment includes the digital signal transceiver of access internet：
Input and/or outputting communication signal；Digital signal processing unit：Processing receives and/or sends communication signal；Sound synthesizer：
Receive and/or send voice communication signal；Sound synthesizer is also associated with microphone and loud speaker；Digital signal processing unit is also
It is connected with charge coupling device CCD.Network access equipment provides high in the clouds transport services access port；Digital signal processing unit,
Realize the center control of Car warning system；Intelligent treatment is alarmed after collision occurs, and provides high in the clouds transport services voice
Access and accident video record.
In said program, the remote information control unit, including field programmable gate module：When reception state
Clock signal, output control clock signal and/or communication clock signal.Aid in treatment is provided for digital signal processing unit, it is auxiliary
Help input and/or auxiliary output.
In said program, the visible light short-path signal transceiver connects field programmable gate module：Optical signal
It is converted with electric signal, receives and/or send photoelectric communication signal；It is connect including with field programmable gate module
Optical fiber link：Including signal transmitting path and signal receiving path；The ASIC being connect with optical fiber link:Send and/or
Receive coded electrical signal；Photoelectric communication device：Optical signal and/or electric signal are converted, and encoded signal is received and/or send.
It provides not through short distance optical communication between the vehicle of high in the clouds transport services；Optical communication will not crosstalk public transport wireless frequency；Tool
There is high information transmission stability.
In said program, it is preferable that the encoded signal, including with IEEE802.15.7 protocol definitions physical layer and
The coded light signal of medium access control layer；It further include the electric signal with encoded clock.Synchronization is used in agreement
Realize " 0 " and " 1 " in data.Realize the optical communication of car speed and/or location information and/or electric communication coding.
Advantageous 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；Anti-collision capacity is obviously improved；The combination of one face arrangement lens array and two line arrangement lens arrays can expand hair
It penetrates and/or range of receiving；Separation obtains better receiving sensitivity and accuracy using detector；Communication frequency will not crosstalk public affairs
Traffic wireless frequency altogether expands communication bandwidth, and stability is high and communication efficiency is obviously improved.
Description of the drawings
Fig. 1 is the modular structure schematic diagram of the present invention；
Fig. 2 is a kind of specific embodiment schematic diagram of the present invention；
Fig. 3 is the visible light short-path signal transceiver embodiments schematic diagram of the present invention；
Fig. 4 is the trans-impedance amplifier embodiment schematic diagram of the present invention；
Fig. 5 is that the present invention uses data first in first out communication schematic diagram；
In figure：1a_EQ, 1b_EQ- balanced device, 2_CDR＆SER.- clock and data recoveries and deserializer, 3_DSW- phases are mended
Repay device, the serializer of 4_20Gbps＆SER.-20Gbps rates, 5_DE.＆Drive, 9_DE.＆Drive- postemphasis driver, 6_
ASIC- application-specific integrated circuits, 7_CDR- clock and data recoveries, 8_MUX- multiplexers, 11_LED DR.- light emitting diodes drive
Dynamic device, 12_TIA- trans-impedance amplifiers, 13_LED- light emitting diodes, 14_PIN D., D1, D2, D3- photodiode, 17- are existing
Field programmable logic gate module, Zpd- impedances, Vpd- impedance voltages, LFC- photoelectric communication devices, FIFO- first in first out.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
The present invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the modular structure schematic diagram of the present invention and a kind of specific embodiment schematic diagram that Fig. 2 is the present invention, and one kind makes
With the intelligent transportation anti-collision equipment of data first in first out, including remote information communication unit：Including network access equipment
With remote information control unit, network access equipment carries out information exchange with internet and outputs signal to remote information control list
Member and/or remote information control unit input signal are to network access equipment and internet；Network access equipment：Believe including number
Number processing unit；Field programmable gate module：Reception state clock signal, when output controls clock signal and/or communication
Clock signal；Field programmable gate module further includes memory reading and writing control unit, data processing unit, asynchronous FIFO list
Member, synchronous FIFO unit and reading and writing data detection unit；The memory reading and writing control unit is used to read from external memory
The data of predetermined unit, and the data of per unit are sequentially sent to data processing unit；Data processing unit is used for per unit
Data handled after be sent into asynchronous FIFO unit；Asynchronous FIFO unit is used to carry out clock domain to the data of predetermined unit to turn
Synchronous FIFO unit is sent into after changing；Synchronous FIFO unit is used to cache the data of asynchronous FIFO unit feeding, and in the number of caching
When according to reaching predetermined unit, interrupt signal is sent out to digital signal processing unit；Digital signal processing unit is used for according to interruption
Signal reads data from synchronous FIFO unit；Reading and writing data detection unit is used to detect that digital signal processing unit often reads
When the data of a complete unit, feedback signal is sent out to memory reading and writing control unit, so that memory reading and writing control unit
The data for reading next unit from external memory according to feedback signal, improve the stability of data transmission；It can
Light-exposed short-path signal transceiver：Information exchange is carried out with remote information control unit；Further include connecting with remote information communication unit
The laser radar connect：Lens array, the transmission lens are arranged including the line arrangement lens array knead dough being applied in combination
And/or receiving lens, including symmetrical line arrangement lens array and the face arrangement lens array in symmetrical central area.
In use, installing present system into various vehicles.
Embodiment 1
Fig. 3 is the visible light short-path signal transceiver embodiments schematic diagram of the present invention, the optical 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 more than
1Gbps/s.Signal transmitting path, including the first balanced device 1a：Pass through ultrahigh speed Ethernet interface XLAUI connection field-programmables
Logic gate module 17 receives electric signal；CDR＆ deserializers 2：Receive the electric signal after the first balanced device 1a compensation, into row clock with
Data are restored and unstring；Phase compensator 3：The electric signal for receiving CDR＆ deserializers 2 carries out phase between dynamic and static electric signal
Position fitting；Serializer 4：Electric signal after the fitting of receiving phase compensator 3, exports serial electric signal；Postemphasis driver 5：It connects
The electric signal for receiving serializer 4, is postemphasised and amplifieroperation, and electric signal is exported；ASIC6：It is connect by physical medium associated layers
Mouthful PMD connections are postemphasised driver 5.
Embodiment 3
Signal receiving path, including ASIC6：Receive the electric signal that photoelectric communication device LFC is uploaded；Second balanced device 1a：
It receives ASIC and sends out the electric signal to the first balanced device 1a in induction signal transmitting path；CDR7：Receive the second balanced device 1a compensation
Electric signal afterwards carries out clock and data recovery；Multiplexer 8：Receive the electric signal after CDR7 restores, output at least two
A Half Speed electric signal；Postemphasis driver 9:The Half Speed electric signal for receiving multiplexer 8, is postemphasised and amplifieroperation.
Field programmable gate module 17：It is postemphasised driver 9 by the XLAUI connections of ultrahigh speed Ethernet interface, at least receives two
A Half Speed electric signal.
Embodiment 4
The photoelectric communication device LFC, including LED driver 11：ASIC6, output control are connected by transfer bus
Signal；LED(13)：The control signal for receiving LED driver 11, optical signal is sent out according to electric signal particular sequence pattern；PIN light
Electric diode 14：Optical signal is received, electric signal is converted to；Trans-impedance amplifier 12：ASIC6 is connected by transfer bus, receives PIN
The electric signal of photodiode 14, output to ASIC6.
Embodiment 5
Fig. 4 is the trans-impedance amplifier embodiment schematic diagram of the present invention, the 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 capacitance,
Emitter is grounded；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 13 lamp of Light-emitting diode LED is in 850nm, 1310nm, 1490nm, CW-DM, 1550nm, DWDM；
Light-emitting diode LED quantity and arrangement include lattice array and/or linear array and/or face array and/or body arrangement；Enabling 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
The laser radar, including transmitter unit and receiving unit.Transmitter unit includes receiving digital processing element control
The impulse generator of clock processed, the laser by impulse generator driving and the line for dispersion laser arrange lens array knead dough
Arrange lens array.
Embodiment 8
The detector includes the photodiode array device of M N array.
Embodiment 9
Fig. 5 is that the present invention uses data first in first out communication schematic diagram, and the digital signal processing unit will be for that will read
The pulse width of control signal is taken to be set as two clock cycle；Synchronous FIFO unit is used to detect reading control signal
Digital signal processing unit is output data to when first clock cycle, is detecting second clock week for reading control signal
It is not dealt with when the phase.Wherein, it verifies through a large number of experiments, when digital signal processing unit is to field programmable gate module
It sends meeting one clock of synchronous feedback, the clock when reading control signal and reaches the driving energy of the clock after higher speed itself
Power weakens, and tends not to the interface logic of stabilized driving field programmable gate module, and will read the pulse for controlling signal
Width is set as two clock cycle, by monitoring the level change for the reading control signal that digital signal processing unit is sent,
To which programmable gate inside modules generate the enable signal of a reading synchronous FIFO unit at the scene, solving scene with this can
Programmed logic door module internal clock and digital signal processing unit be transmitted read the control nonsynchronous problem of signal phase with
And the problem of weakening because of the driving capability of the clock of digital signal processing unit feedback.
Embodiment 10
In communication process, it is based on above example, Light-emitting diode LED 13 sends out data packet, and photodiode 14 is logical
It crosses and connects ASIC6 completion clock synchronizations across sufficient amplifier 12, ensure the time accuracy that sampling occurs；LED driver 11 shifts to an earlier date
The light period of LED13 is set, keeps being no more than with 14 same period 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 14 clock of photodiode sends out logical zero (low light
Density) when, photodiode 14 starts sampling 1；When LED13 sends out 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 cannot be experienced, and vehicle driving safety is not interfered with.
There is unknown mutation in hardware advances, and 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 practicability.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Belong to those skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in all are answered
It is included within the scope of the present invention.
Claims (3)
1. a kind of intelligent transportation anti-collision equipment using data first in first out, which is characterized in that including
Remote information communication unit：Including network access equipment and remote information control unit, network access equipment with mutually
Networking carries out information exchange and outputs signal to remote information control unit and/or remote information control unit input signal to net
Network access device and internet；
Network access equipment：Including digital signal processing unit；
Remote information control unit：It include the field programmable gate module being connect with digital signal processing unit；
Field programmable gate module：Including memory reading and writing control unit, data processing unit, asynchronous FIFO unit, same
Walk cell fifo and reading and writing data detection unit；The memory reading and writing control unit is used to read booking list from external memory
The data of position, and the data of per unit are sequentially sent to data processing unit；Data processing unit is used for the data to per unit
Asynchronous FIFO unit is sent into after being handled；Asynchronous FIFO unit is used to after carrying out clock domain conversion to the data of predetermined unit send
Enter synchronous FIFO unit；Synchronous FIFO unit is used to cache the data of asynchronous FIFO unit feeding, and reaches in the data of caching
When predetermined unit, interrupt signal is sent out to digital signal processing unit；Digital signal processing unit be used for according to interrupt signal from
Synchronous FIFO unit reads data；Reading and writing data detection unit is used to detect that digital signal processing unit often read one
When the data of unit, feedback signal is sent out to memory reading and writing control unit, so that memory reading and writing control unit is according to anti-
Feedback signal reads the data of next unit from external memory；Visible light short-path signal transceiver：With remote information control unit
Carry out information exchange；
Further include the laser radar being connect with remote information communication unit, the laser radar includes：Transmitter unit：Including to
The transmission lens array of the left and right side regional divergence laser of vehicle front region and vehicle；And receiving unit：Including receiving institute
State the receiving lens array of the reflected light of the left and right side region reflection of vehicle front region and the vehicle；
The transmission lens array and/or receiving lens array, including symmetrical line arrangement lens array and in pair
The face of central area is claimed to arrange lens array.
2. a kind of intelligent transportation anti-collision equipment using data first in first out according to claim 1, which is characterized in that
The network access equipment, including
Access the digital signal transceiver of internet：Input and/or outputting communication signal；
Digital signal processing unit：Processing receives and/or sends communication signal；
Sound synthesizer：Receive and/or send voice communication signal.
3. a kind of intelligent transportation anti-collision equipment using data first in first out according to claim 1, which is characterized in that
The visible light short-path signal transceiver connects field programmable gate module：Optical signal and electric signal are converted, and are connect
Receive and/or send photoelectric communication signal；Including
The optical fiber link being connect with field programmable gate module：Including signal transmitting path and signal receiving path；
The ASIC being connect with optical fiber link:Send and/or receive coded electrical signal；
Photoelectric communication device：Optical signal and/or electric signal are converted, and encoded signal is received and/or send.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510630157.7A CN105225531B (en) | 2015-09-29 | 2015-09-29 | A kind of intelligent transportation anti-collision equipment using data first in first out |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510630157.7A CN105225531B (en) | 2015-09-29 | 2015-09-29 | A kind of intelligent transportation anti-collision equipment using data first in first out |
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| CN105225531A CN105225531A (en) | 2016-01-06 |
| CN105225531B true CN105225531B (en) | 2018-09-25 |
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| CN201510630157.7A Expired - Fee Related CN105225531B (en) | 2015-09-29 | 2015-09-29 | A kind of intelligent transportation anti-collision equipment using data first in first out |
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| CN115273548A (en) * | 2022-07-27 | 2022-11-01 | 北京拙河科技有限公司 | Vehicle monitoring method and system based on micro-lens array |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013174A (en) * | 2010-11-18 | 2011-04-13 | 华东理工大学 | Vehicle collision warning system based on optical communication |
| CN104298634A (en) * | 2014-09-24 | 2015-01-21 | 四川九洲电器集团有限责任公司 | Data transmission system based on FPGA and DSP |
| CN104485993A (en) * | 2014-11-25 | 2015-04-01 | 南昌大学 | Vehicular visible light wireless digital voice communication system |
| CN104827963A (en) * | 2015-04-01 | 2015-08-12 | 北京京东尚科信息技术有限公司 | Method of collision avoidance and intelligent early warning for vehicle, control system and control device |
| CN204990750U (en) * | 2015-09-29 | 2016-01-20 | 成都川睿科技有限公司 | Usage data FIFO's intelligent transportation anticollision equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8773281B2 (en) * | 2009-09-15 | 2014-07-08 | Ohanes D. Ghazarian | Intersection vehicle collision avoidance system |
-
2015
- 2015-09-29 CN CN201510630157.7A patent/CN105225531B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013174A (en) * | 2010-11-18 | 2011-04-13 | 华东理工大学 | Vehicle collision warning system based on optical communication |
| CN104298634A (en) * | 2014-09-24 | 2015-01-21 | 四川九洲电器集团有限责任公司 | Data transmission system based on FPGA and DSP |
| CN104485993A (en) * | 2014-11-25 | 2015-04-01 | 南昌大学 | Vehicular visible light wireless digital voice communication system |
| CN104827963A (en) * | 2015-04-01 | 2015-08-12 | 北京京东尚科信息技术有限公司 | Method of collision avoidance and intelligent early warning for vehicle, control system and control device |
| CN204990750U (en) * | 2015-09-29 | 2016-01-20 | 成都川睿科技有限公司 | Usage data FIFO's intelligent transportation anticollision equipment |
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