CN207124706U - A kind of panorama parking assist apparatus using DSP and FPGA - Google Patents
A kind of panorama parking assist apparatus using DSP and FPGA Download PDFInfo
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- CN207124706U CN207124706U CN201721020452.1U CN201721020452U CN207124706U CN 207124706 U CN207124706 U CN 207124706U CN 201721020452 U CN201721020452 U CN 201721020452U CN 207124706 U CN207124706 U CN 207124706U
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Abstract
The utility model discloses a kind of panorama parking assist apparatus using DSP and FPGA, including：Image acquisition units, it is arranged in the wide angle camera of vehicle periphery by several and formed；Video Decoder, its input connect the output end of image acquisition units；DSP Processor module, its input are connected with Video Decoder output end；FPGA coprocessor modules, it is interconnected with DSP Processor module, coprocessor and external storage interface are provided with FPGA coprocessor modules, external storage interface interconnects with coprocessor, and coprocessor includes ALU and pretreatment unit；And video encoder, its input are connected with the output end of DSP Processor module, the output end connection Vehicular display device of video encoder.The utility model is finally spliced to form the panorama birds-eye view of virtual reality scenario and shown by Vehicular display device, effective reference is provided for safe driving by the processing to multiple paths of video images.
Description
Technical field
It the utility model is related to automotive safety to park ancillary technique field, and in particular to a kind of using the complete of DSP and FPGA
Scape parking assist apparatus.
Background technology
Recently as the progress of science and technology, increasing electronic security(ELSEC) safeguards system is applied in field of automobile safety.
Automotive safety guarantee can be divided into active safety system and passive safety system, and active safety system mainly utilizes various sensors,
Such as infrared sensor, trailer-mounted radar, ultrasonic sensor and image detector.Passive safety system includes safety belt pre-tightening
Device, air bag, the reinforcing of vehicle body and steering spindle energy absorbing device etc..In recent years, image processing techniques and computer regard
The fast development of feel technology, until vehicle backing backsight parking assisting system occurs, automobile active safety system is based on video image
Auxiliary driving technology have on vehicle security drive field new breakthrough with innovation.
Utility model content
A purpose of the present utility model is that solve at least the above, and provides the advantages of at least will be described later.
The utility model also has a purpose to be to provide a kind of panorama parking assist apparatus using DSP and FPGA, passes through
Processing to multiple paths of video images, finally it is spliced to form the panorama birds-eye view of virtual reality scenario and is shown by Vehicular display device
Out, effective reference is provided for safe driving.
In order to realize according to these purposes of the present utility model and further advantage, there is provided a kind of using DSP's and FPGA
Panorama parking assist apparatus, including：
Image acquisition units, it is arranged in the wide angle camera of vehicle periphery by several and formed；
Video Decoder, its input connect the output end of described image collecting unit；
DSP Processor module, its input are connected with the Video Decoder output end；
FPGA coprocessor modules, it is interconnected with the DSP Processor module, the FPGA coprocessors mould
Coprocessor and external storage interface are provided with block, the external storage interface interacts company with the coprocessor
Connect, the coprocessor includes ALU and pretreatment unit；And
Video encoder, its input are connected with the output end of the DSP Processor module, the video encoder it is defeated
Go out end connection Vehicular display device.
Preferably, in addition to a power module, it connects vehicle power, and a power protection is provided with the power module
Circuit, the power input of the DSP Processor module connect the output end of the power protecting circuit.
Preferably, the power protecting circuit includes fuse, driver, diode and the parallel connection successively being sequentially connected
Connect voltage-regulator diode, the first electric capacity, the second electric capacity and the 3rd electric capacity at the diode cathode end, the fuse input
Vehicle power is connected, the fuse is that MF-LSMF300/24X types can reset fuse, and the diode anode passes through described
Driver is connected with the fuse output end, and the diode cathode connects the power input of the DSP Processor module.
Preferably, in addition to a holder, it is connected with the DSP Processor module and coprocessor respectively.
Preferably, camera fill flash and CAN communication module are also associated with the DSP Processor module.
Preferably, described image collecting unit by be arranged in vehicle periphery it is diagonal on four wide angle cameras form, each
The wide angle camera is connected by a Video Decoder with the DSP Processor module input.
Preferably, the Video Decoder includes：
MUX, its input are connected with the output end of the wide angle camera；
Y/C separative elements, the output end of the MUX pass sequentially through an amplifier and A/D converter and the Y/
The input connection of C separative elements；
I2C interface, its clock cable are connected the output end of the ALU, the I2C with data wire respectively
The output end of interface connects the gain control end of the amplifier；
Decoding chip, the I2C interface are arranged on the decoding chip, described in the output end connection of the decoding chip
The control terminal of Y/C separative elements；
Output format processing unit, its input pass through a colourity processing unit and luma processing unit and the Y/ respectively
The output end connection of C separative elements, the output end of the output format processing unit connect the input of the DSP Processor module
End；
Elimination of hidden unit, its input connect the output end of the colourity processing unit, the elimination of hidden unit
Output end connects the input of the output format processing unit and decoding chip respectively；
Phaselocked loop, it connects the I2C interface, and the external oscillation circuit input set on the phaselocked loop is patrolled with described
Collect arithmetic element connection；And
Synchronous processing device, it is interconnected with the phaselocked loop, the input of the synchronous processing device also with the decoding
Chip output connects.
Preferably, the decoding chip uses TVP5150AM1 cake cores, and the crystal oscillator frequency of the chip is
14.31818MHz, the numeral input voltage and analog input voltage of the chip are respectively 1.8V, the I/0 port voltages of the chip
For 3.3V.
Preferably, the output end of the ALU connects the drive end of the video encoder.
Preferably, clock signal output terminal output two kinds of frequencies of 13.5MHz and 27MHz of the phaselocked loop.
The utility model comprises at least following beneficial effect：
Core processor using DSP Processor module as the system image procossing, FPGA is as coprocessor, fully
The respective advantage of two kinds of different processors has been played, has focused on modularized design in design, has to greatest extent possessed system simultaneous
The advantages that capacitive is strong, scalability is good and system upgrade is easy to maintenance, while this system cost is relatively low, real-time is good, safely can
Lean on.
Further advantage, target and feature of the present utility model embody part by following explanation, and part will also pass through
Research of the present utility model and practice are understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is general structure schematic diagram of the present utility model；
Fig. 2 is the concrete structure schematic diagram of Video Decoder of the present utility model；
Fig. 3 is the structural representation of power protecting circuit in power module of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of individual other elements or its combination.
The utility model electricity provides a kind of panorama parking assist apparatus using DSP and FPGA, by multi-channel video
The processing of image, finally it is spliced to form the panorama birds-eye view of virtual reality scenario and is shown by Vehicular display device, for peace
Complete drive provides effective reference.
As Figure 1-3, specifically include：Image acquisition units 30, Video Decoder 40, DSP Processor module 10, FPGA
Coprocessor module 20 and video encoder 60.
Wherein, image acquisition units 30 are arranged in the wide angle camera of vehicle periphery by several and formed, in the present embodiment, institute
State image acquisition units 30 by be arranged in vehicle periphery it is diagonal on four wide angle cameras form, pass through 4 wide angle cameras and gather
Cover the scene image of 360 ° of vehicle periphery, the output of the input connection described image collecting unit 30 of Video Decoder 40
End, that is, each wide angle camera pass through a Video Decoder 40 and the input of DSP Processor module 10
Connection, by the processing to 4 road video images, finally it is spliced to form the panorama birds-eye view of virtual reality scenario and by vehicle-mounted aobvious
Show that device is shown.
FPGA coprocessors module 20 interconnects with the DSP Processor module 10, the FPGA coprocessors
Coprocessor 22 and external storage interface 21 are provided with module 20, the external storage interface 21 cooperates with place with described
Reason device 22 interconnects, and the coprocessor 22 includes ALU 221 and pretreatment unit 222.
The input of video encoder 60 is connected with the output end of the DSP Processor module 10, the video encoder
60 output end connection Vehicular display device 70, the panorama birds-eye view of reality scene is included in Vehicular display device 70, to park
Full-view image is provided to support.
The utility model also includes the power module 50 of a connection vehicle power, is parking assist apparatus of the present utility model
Power supply, when in automobile starting and normal driving process, the irregular mutation in the range of lOV-16V of its electric power output voltage.It is not difficult
Such harm of the voltage to electronic system of fluctuating widely is envisioned as, if acting directly on in-vehicle electronic system and onboard instruments
On, this caused voltge surge that fluctuates widely often causes electronic device to damage, and causes major accident occur.So this
When system considers that 12V power supplies will introduce from car in the design, one protection circuit of addition ensures whole system circuit
Safety.A power protecting circuit, the power input of the DSP Processor module 10 are provided with the power module 50
The output end of the power protecting circuit is connected, stable 12V power supplys are provided for it.
As shown in figure 3, the power protecting circuit includes fuse FUSE, driver 51, the diode 52 being sequentially connected
And the voltage-regulator diode D4, the first electric capacity C63, the second electric capacity C61 and of the cathode terminal of diode 52 are connected in parallel successively
Three electric capacity C62, the fuse input connect vehicle power, and the fuse is that MF-LSMF300/24X types can reset fusing
Device, the diode anode are connected by the driver with the fuse output end, described in the diode cathode connection
The power input of DSP Processor module 10, finally from the stable 12V power supplys of the negative electrode of diode 52 output.
In the present embodiment, in addition to a holder 11, its respectively with the DSP Processor module 10 and coprocessor 22
Connection, for storing video data.Camera fill flash 90 and CAN communication mould are also associated with the DSP Processor module 10
Block 80.
In the present embodiment, as shown in Fig. 2 in the Video Decoder 40, the input of MUX 41 with it is described wide
The output end connection of angle camera, for receiving view data；The output end of the MUX 41 passes sequentially through an amplifier
412 and A/D converter 413 be connected with the input of the Y/C separative elements 42；The clock cable SCL and number of I2C interface 45
Connect the output end of the ALU 221 respectively according to line SDA, the output end of the I2C interface 45 connects the amplification
The gain control end of device 412；The I2C interface 45 is arranged on the decoding chip 46, the output end of the decoding chip 46
Connect the control terminal of the Y/C separative elements 42；The input of output format processing unit 44 is handled single by a colourity respectively
Member 431 and luma processing unit 432 are connected with the output end of the Y/C separative elements 42, the output format processing unit 44
Output end connect the input of the DSP Processor module 10；The input of elimination of hidden unit 47 is connected at the colourity
The output end of unit 431 is managed, the output end of the elimination of hidden unit 47 connects the He of output format processing unit 44 respectively
The input of decoding chip 46；Phaselocked loop 48 connects the I2C interface 45, the external oscillation circuit set on the phaselocked loop 48
Input XTAL1, XTAL2 are connected with the ALU 221；Synchronous processing device 49 and the company of interaction of phaselocked loop 48
Connect, the input of the synchronous processing device 49 is also connected with the output end of decoding chip 46.
The decoding chip 46 uses TVP5150AM1 cake cores, and the crystal oscillator frequency of the chip is 14.31818MHz, the core
The numeral input voltage and analog input voltage of piece are respectively 1.8V, and the I/0 port voltages of the chip are 3.3V.The logic fortune
The output end for calculating unit 221 connects the drive end of the video encoder 60.The clock signal output terminal of the phaselocked loop 48 is defeated
Go out two kinds of frequencies of 13.5MHz and 27MHz.
The utility model provides a kind of panorama parking assist apparatus using DSP and FPGA, including:DSP Processor mould
Block, FPGA coprocessors module, image acquisition units, Video decoding module, video encoding module, CAN communication module, power supply
Module.The DSP Processor module connect respectively FPGA coprocessors unit, Video decoding module, video encoding module,
CAN communication module, power module, holder and camera fill flash, the collection of main responsible 4 road wide angle camera video images
With 1 road video image output and the realization of complicated image Processing Algorithm and the information for receiving CAN module.At the FPGA collaborations
Reason device module connects DSP Processor module and holder respectively.The logic control of main responsible whole system and video image
Pretreatment, including the driving of coding and decoding chip, the extension of external memory storage and simple image preprocessing etc., and it is reserved with foot
Enough logical resource spaces are so as to the implantation of later complicated algorithm and the needs of Function Extension.
The present embodiment Video Decoder TVP5150AM1 functional block diagram is as shown in Fig. 2 TVP5150AM1 adopts for the system
The concrete model of video decoder chip.TVP5150AM1 decoders external crystal-controlled oscillation is 14.31818MHz, and numeral input is electric
Pressure (AVDD) and analog input voltage (DVDD) are 1.8V, and the port voltage (DVDDIO) of chip I/0 is 3.3V, can provide two simultaneously
Road CVBS analog videos input, need to carry out matched impedance designs to eliminate the reflection interference of input signal；YOUT[0:7] export
The video stream data of YCrCb forms, row field blanking signal can be exported by configuring by pin HSYNC and VSYNC, according to system
Design requirement can also be embedded in 8 output signals.Two kinds of PCLK/SGLK pin clock signals exportable 13.5MHz and 27MHz
Frequency.
In summary, a kind of panorama parking assist apparatus using DSP and FPGA of the utility model above-described embodiment, tool
Have that real-time is good, powerful, structure is relatively simple, safe and reliable.Use the core processing using DSP as the system image procossing
Device, FPGA have given full play to the respective advantage of two kinds of different processors as coprocessor.Focus on modularization in design to set
Meter, system is set to possess the advantages that compatible strong, scalability is good and system upgrade is easy to maintenance to greatest extent.This system simultaneously
Cost is relatively low, real-time is good, safe and reliable.
The utility model is core FPGA as collaboration process chip using DSP, devise it is a kind of it is economical and practical, be easy to entrucking
The panorama parking assist apparatus using DSP and FPGA, the field of 4 wide angle cameras collection 360 ° of vehicle periphery of covering can be passed through
Scape image, by the processing to 4 road video images, finally it is spliced to form the panorama birds-eye view of virtual reality scenario and by vehicle-mounted
Display 70 is shown.Core processor using DSP Processor module 10 as the system image procossing, FPGA is as collaboration
Processor 22, the respective advantage of two kinds of different processors is given full play to, has focused on modularized design in design, to greatest extent
System is set to possess the advantages that compatible strong, scalability is good and system upgrade is easy to maintenance, while this system cost is relatively low, real-time
Property is good, safe and reliable.
Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment
Listed utilization, it can be applied to various suitable fields of the present utility model completely, for those skilled in the art,
Other modification is easily achieved, therefore under the universal limited without departing substantially from claim and equivalency range, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (10)
- A kind of 1. panorama parking assist apparatus using DSP and FPGA, it is characterised in that including：Image acquisition units, it is arranged in the wide angle camera of vehicle periphery by several and formed；Video Decoder, its input connect the output end of described image collecting unit；DSP Processor module, its input are connected with the Video Decoder output end；FPGA coprocessor modules, it is interconnected with the DSP Processor module, in the FPGA coprocessors module Coprocessor and external storage interface are provided with, the external storage interface interconnects with the coprocessor, The coprocessor includes ALU and pretreatment unit；AndVideo encoder, its input are connected with the output end of the DSP Processor module, the output end of the video encoder Connect Vehicular display device.
- 2. DSP and FPGA panorama parking assist apparatus is used as claimed in claim 1, it is characterised in that also including an electricity Source module, it connects vehicle power, a power protecting circuit is provided with the power module, the DSP Processor module Power input connects the output end of the power protecting circuit.
- 3. DSP and FPGA panorama parking assist apparatus is used as claimed in claim 2, it is characterised in that the power supply is protected Fuse that protection circuit includes being sequentially connected, driver, diode and the steady of the diode cathode end is connected in parallel successively Diode, the first electric capacity, the second electric capacity and the 3rd electric capacity are pressed, the fuse input connects vehicle power, the fuse Fuse can be resetted for MF-LSMF300/24X types, the diode anode passes through the driver and the fuse output end Connection, the diode cathode connect the power input of the DSP Processor module.
- 4. DSP and FPGA panorama parking assist apparatus is used as claimed in claim 3, it is characterised in that also including a storage Storage, it is connected with the DSP Processor module and coprocessor respectively.
- 5. DSP and FPGA panorama parking assist apparatus is used as claimed in claim 4, it is characterised in that the DSP processing Camera fill flash and CAN communication module are also associated with device module.
- 6. DSP and FPGA panorama parking assist apparatus is used as claimed in claim 5, it is characterised in that described image is adopted Collection unit by be arranged in vehicle periphery it is diagonal on four wide angle cameras form, each wide angle camera described in one by regarding Frequency decoder is connected with the DSP Processor module input.
- 7. DSP and FPGA panorama parking assist apparatus is used as claimed in claim 6, it is characterised in that the video solution Code device includes：MUX, its input are connected with the output end of the wide angle camera；Y/C separative elements, the output end of the MUX pass sequentially through an amplifier and A/D converter and the Y/C points Input from unit connects；I2C interface, its clock cable are connected the output end of the ALU, the I2C interface with data wire respectively Output end connect the gain control end of the amplifier；Decoding chip, the I2C interface are arranged on the decoding chip, and the output end of the decoding chip connects the Y/C The control terminal of separative element；Output format processing unit, its input are divided by a colourity processing unit and luma processing unit with the Y/C respectively Output end from unit connects, and the output end of the output format processing unit connects the input of the DSP Processor module；Elimination of hidden unit, its input connect the output end of the colourity processing unit, the output of the elimination of hidden unit End connects the input of the output format processing unit and decoding chip respectively；Phaselocked loop, it connects the I2C interface, and the external oscillation circuit input set on the phaselocked loop is transported with the logic Calculate unit connection；AndSynchronous processing device, it is interconnected with the phaselocked loop, the input of the synchronous processing device also with the decoding chip Output end connects.
- 8. DSP and FPGA panorama parking assist apparatus is used as claimed in claim 7, it is characterised in that the decoding core Piece uses TVP5150AM1 cake cores, and the crystal oscillator frequency of the chip is 14.31818MHz, the numeral input voltage and mould of the chip It is respectively 1.8V to intend input voltage, and the I/0 port voltages of the chip are 3.3V.
- 9. DSP and FPGA panorama parking assist apparatus is used as claimed in claim 8, it is characterised in that the logic fortune The output end for calculating unit connects the drive end of the video encoder.
- 10. DSP and FPGA panorama parking assist apparatus is used as claimed in claim 9, it is characterised in that the phaselocked loop Clock signal output terminal output two kinds of frequencies of 13.5MHz and 27MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721020452.1U CN207124706U (en) | 2017-08-15 | 2017-08-15 | A kind of panorama parking assist apparatus using DSP and FPGA |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721020452.1U CN207124706U (en) | 2017-08-15 | 2017-08-15 | A kind of panorama parking assist apparatus using DSP and FPGA |
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| Publication Number | Publication Date |
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| CN207124706U true CN207124706U (en) | 2018-03-20 |
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|---|---|---|---|
| CN201721020452.1U Expired - Fee Related CN207124706U (en) | 2017-08-15 | 2017-08-15 | A kind of panorama parking assist apparatus using DSP and FPGA |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356328A (en) * | 2019-07-09 | 2019-10-22 | 安徽富煌科技股份有限公司 | A kind of outside vehicle surrounding three-dimensional looks around real scene video display system |
| CN117278761A (en) * | 2023-11-16 | 2023-12-22 | 北京傲星科技有限公司 | Vehicle-mounted video transmission system and method |
-
2017
- 2017-08-15 CN CN201721020452.1U patent/CN207124706U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356328A (en) * | 2019-07-09 | 2019-10-22 | 安徽富煌科技股份有限公司 | A kind of outside vehicle surrounding three-dimensional looks around real scene video display system |
| CN117278761A (en) * | 2023-11-16 | 2023-12-22 | 北京傲星科技有限公司 | Vehicle-mounted video transmission system and method |
| CN117278761B (en) * | 2023-11-16 | 2024-02-13 | 北京傲星科技有限公司 | Vehicle-mounted video transmission system and method |
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