CN207124684U

CN207124684U - A kind of binocular machine vision platform

Info

Publication number: CN207124684U
Application number: CN201721124135.4U
Authority: CN
Inventors: 洪亚德
Original assignee: G-FIRST OEIC Co Ltd
Current assignee: G-FIRST OEIC Co Ltd
Priority date: 2017-09-04
Filing date: 2017-09-04
Publication date: 2018-03-20
Anticipated expiration: 2027-09-04

Abstract

The utility model discloses a kind of binocular machine vision platform, including the first video camera, the second video camera, monitor, dsp chip, CPLD modules, SDRAM module, Flash modules, jtag interface, serial port chip, Ethernet chip, RS232 interface, the first video decoding chip, the second video decoding chip, video coding chip, power module and Ethernet interface.Connected between the CPLD modules, SDRAM module, Flash modules, serial port chip and dsp chip by 64bit external memory interface (EMIF), the power module, jtag interface, serial port chip and Ethernet chip are connected with dsp chip.First video camera, the second video camera and monitor are connected with first video decoding chip, the second video decoding chip and video coding chip respectively；First video decoding chip, the second video decoding chip, video coding chip are connected with the dsp chip.Binocular machine vision platform input constructed by the utility model is small, scalability is strong, and is provided simultaneously with superior image-capable.

Description

A kind of binocular machine vision platform

Technical field

It the utility model is related to machine vision platform, and in particular to a kind of binocular machine vision platform.

Background technology

Conventional binocular machine vision platform generally use video frequency collection card and industrial computer, it is invested greatly, and autgmentability is poor, can Poor mobility, is typically limited to only laboratory research use, and practical application is less；Some existing equipment then use embedded platform, Processor such as based on ARM series, but limited because its system frequency, chip structure etc. are many-sided, before system is formed mostly Hold video a/d conversion, by ARM carry out video cache, pretreatment, key frame extraction, by the interfaces such as network or PCI send to PC, target processing is carried out by PC in rear end, its shortcoming is：It is all if desired for multichannel process, high accuracy, big data quantity video Performance is had too many difficulties to cope with.

Utility model content

The purpose of this utility model is that providing a kind of high performance binocular machine vision using dsp chip as core puts down Platform.

To achieve the above object, the utility model uses following technical scheme：

A kind of binocular machine vision platform, including the first video camera, the second video camera and monitor, in addition to the first video Decoding chip, the second video decoding chip, video coding chip, dsp chip, CPLD modules, SDRAM module, Flash modules, External memory interface and power module；First video camera, the second video camera and monitor respectively with first video Decoding chip, the second video decoding chip and video coding chip are connected；First video decoding chip, the decoding of the second video Chip, video coding chip are connected with the dsp chip；The CPLD modules, SDRAM module, Flash modules and DSP cores It is connected between piece by the external memory interface；The power module is connected with the dsp chip.

Further, first video decoding chip and the second video decoding chip are SAA7113 chips, described to regard Frequency coding chip is SAA7121 chips, and the dsp chip is DM642 chips, and the power module is LM2596 types DC/DC electricity Flat conversion chip.

Further, in addition to serial port chip and the RS232 interface that is connected with serial port chip, the serial port chip with it is described External memory interface is connected.

Further, the serial port chip is made up of connected TL16C752B chips and MAX3232 chips, described TL16C752B chips are connected with the external memory interface, and the MAX3232 chips are connected with the RS232 interface.

Further, in addition to the ethernet transceiver, isolating transformer and the Ethernet interface that are sequentially connected, the ether Net transceiver is connected with the dsp chip.

Further, the ethernet transceiver is LXT972ALC type transceivers, and the isolating transformer is HR601680 Type transformer, the Ethernet interface are RJ45 interfaces.

Further, in addition to jtag interface, the jtag interface are connected with the dsp chip.

After adopting the above technical scheme, the utility model compared with background technology, has the following advantages that：

Binocular machine vision platform input constructed by the utility model is small, scalability is strong, and is provided simultaneously with superior Image-capable, it can be competent at all if desired for multichannel process, high accuracy, the Video Applications of big data quantity.

Brief description of the drawings

Fig. 1 is the block diagram of the utility model；

Fig. 2 is the utility model serial port chip block diagram；

Fig. 3 is the utility model Ethernet chip block diagram.

Embodiment

In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining The utility model, it is not used to limit the utility model.

Embodiment

With reference to shown in figure 1, the utility model discloses a kind of binocular machine vision platform, and it includes the first video camera, Two video cameras, monitor, video board and core board.The major function of the core board is image procossing and Interface Controller；Video Plate major function is that two-way analog video gathers and carries out analog-to-digital conversion, video digital-to-analogue conversion and analog video export, are electric all the way Change and put serial ports joint and network interface interface is used for PERCOM peripheral communication in source.

The core board includes dsp chip, CPLD modules, SDRAM module, Flash modules, jtag interface, serial port chip And Ethernet chip.Pass through 64bit between the CPLD modules, SDRAM module, Flash modules, serial port chip and dsp chip External memory interface (EMIF) connection, the jtag interface, serial port chip and Ethernet chip and the dsp chip phase Even.The video board includes RS232 interface, the first video decoding chip, the second video decoding chip, video coding chip, electricity Source module and Ethernet interface.First video camera, the second video camera and monitor decode core with first video respectively Piece, the second video decoding chip and video coding chip are connected；First video decoding chip, the second video decoding chip, Video coding chip is connected with the dsp chip；The power module is connected with the dsp chip.

Wherein, the dsp chip is TMS320DM642 chips, the master controller as vision platform.The CPLD modules It is responsible for the logic controls such as piece choosing, page choosing.In the present embodiment, dsp chip is accessed by the external memory interface and stored outside piece Module, the external memory interface are divided into 4 spaces, i.e. CE0-CE3.

SDRAM module is used for storage image data, and necessary data and program, this reality are stored in image processing process SDRAM module in example is applied to form using 2 HY57V283220T SDRAM chip portfolios, so as to extend 32Mbyte (4M × The outer memory space of piece 64bit), the wide sdram interface buses of 64bit are provided in CE0 spaces, substantially increase RAM and CPU Data interaction speed.

Due to not having operation program when establishing the beginning by cable on the internal program memory in dsp chip, run in system electrification When, need in the SRAM that is moved first by program from external memory storage to DSP, it would therefore be desirable to have Flash modules to be used for Load bootstrap and image processing main program.Flash modules are 4M byte's in the present embodiment AM29LV320DB90E1Flash memories, CE1 low address space is mapped to, for Boot Loading's and storage CPLD Configuration information.

Because CE1 spaces are configured as that 8bit is wide, and Flash is 8bit wide, so the 16th original data bit, multiplexing Make A3 address bits.CPLD is used for creating 2 address wires, Flash is divided into page 4, every page of 1Mbytes.Upon system reset, Flash is located at page 0.After the completion of system initialization, page selection can be controlled by CPLD, so as to realize the reading to each pages of Flash Write operation.In electricity on dsp chip or reset, dsp chip can be copied from the initial address of the Flash positioned at outside CE1 spaces Shellfish 1Kbyte code is at 0 to internal RAM address, and starts to perform.User need with this 1Kbyte code oneself User program load simultaneously points to starting point, brings into operation.

The indicating positions information real-time Transmission that the serial port chip and RS232 interface are used to that DSP processing will to be obtained is to PC. As shown in Fig. 2 in the present embodiment, serial port chip is made up of connected TL16C752B chips and MAX3232 chips, described TL16C752B chips are connected with the dsp chip, and the MAX3232 chips are connected with the RS232 interface.

Wherein, TL16C752B address wire A [0..2], data wire D [0..7] respectively the address wire A [3..5] with DSP, External data line D [0..7] is joined directly together, and gating signal CSA/CSB, read-write IORD/IOWR, reset signal RESET with And interrupt signal INTA/B then accesses CPLD and by CPLD processing.

The Ethernet chip forms by ethernet transceiver and with isolating transformer, the ethernet transceiver with it is described Dsp chip is connected, and the isolating transformer is connected with Ethernet interface.As shown in figure 3, in the present embodiment, ethernet transceiver For LXT972ALC type transceivers, the isolating transformer is HR601680 type transformers, and Ethernet interface is RJ45 interfaces.By Support IEEE802.3 standards to provide MII interfaces in LXT972ALC, MAC can be supported, and ether is just integrated with inside DM642 Net medium access controller, so LXT972ALC can realize slitless connection with DM642.The data transmitted from DM642 are led to Cross after LXT972ALC is converted to the data that ethernet physical layer can receive, by RJ-45 port transmissions to network.

According to the needs of binocular vision platform, the present embodiment devises two-path video collection, every all to be taken the photograph all the way by CCD numerals Camera (i.e. the first video camera and the second video camera) is with 2：1 interlacing scan gathers, and is input to video solution with PAL-system analog video Code chip, then complete analog image by video decoding chip and be transformed into the work of digital picture, export digital parallel signal (CIF (720 × 576), YUV (4：2：2), ITU-BT656 code streams (8)), and the Video Port for delivering to DM642 carry out video Processing, DM642 Video Port are inputted using 8 bit patterns, high position alignment (connection VP [2..9]).

First video decoding chip and the second video decoding chip are SAA7113 chips, and it can input 4 road moulds Intend vision signal, 4 tunnels can be inputted and changed by the different configurations of internal register, input can be 4 road CVBS or 2 Road S-video signal, the VP0 buses for 8 are exported, meet ITU.656, YUV4:2:2 standards.DM642 is total by its offer I2C The SCL clock of line, in system initialization, the 32 register configuration relevant parameters internal to SAA7113 (slave unit), pass through RTSO pull-up, pulling operation, the I2C buses acquiescence read/write address of chip can be changed.

The present embodiment is designed with video frequency output all the way, and video frequency output is exported by DM642 VideoPort2 using 8 bit patterns CIR 656CIF(768*576),YUV(4:2:2) vision signal, digital picture is transformed into by PAL-system by video coding chip Analog video is supplied to monitor.In the present embodiment, video coding chip uses SAA7121 chips, and it can receive 8,1 tunnel CIR 656CIF(768*576),YUV(4:2:2), SAV, EAV vision signal, can be same by the different configurations of internal register The brightness of Shi Hecheng digital pictures and chrominance information, PAL, NTSC or S-Video signal all the way is exported, meets platform requirement, Wherein, the read-write of register needs to carry out by I2C buses.

In the present embodiment, the power module is LM2596 type DC/DC level transformating chips, by the 9V DC levels of input Change into 3.3V.Because LM2596 switching voltages are step down supplies management monolithic integrated optical circuits, it has well linear and negative Carry control characteristic.

It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model discloses Change or replacement, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should It is defined by scope of the claims.

Claims

1. a kind of binocular machine vision platform, including the first video camera, the second video camera and monitor, it is characterised in that：Also wrap Include the first video decoding chip, the second video decoding chip, video coding chip, dsp chip, CPLD modules, SDRAM module, Flash modules, external memory interface and power module；First video camera, the second video camera and monitor respectively with institute The first video decoding chip, the second video decoding chip and video coding chip is stated to be connected；First video decoding chip, Two video decoding chips, video coding chip are connected with the dsp chip；The CPLD modules, SDRAM module, Flash moulds It is connected between block and dsp chip by the external memory interface；The power module is connected with the dsp chip.

A kind of 2. binocular machine vision platform as claimed in claim 1, it is characterised in that：First video decoding chip and Second video decoding chip is SAA7113 chips, and the video coding chip is SAA7121 chips, and the dsp chip is DM642 chips, the power module are LM2596 type DC/DC level transformating chips.

A kind of 3. binocular machine vision platform as claimed in claim 1, it is characterised in that：Also include serial port chip and and serial ports The connected RS232 interface of chip, the serial port chip are connected with the external memory interface.

A kind of 4. binocular machine vision platform as claimed in claim 3, it is characterised in that：The serial port chip by be connected TL16C752B chips and MAX3232 chips composition, the TL16C752B chips are connected with the external memory interface, described MAX3232 chips are connected with the RS232 interface.

A kind of 5. binocular machine vision platform as claimed in claim 1, it is characterised in that：Also include the Ethernet being sequentially connected Transceiver, isolating transformer and Ethernet interface, the ethernet transceiver are connected with the dsp chip.

A kind of 6. binocular machine vision platform as claimed in claim 5, it is characterised in that：The ethernet transceiver is LXT972ALC type transceivers, the isolating transformer are HR601680 type transformers, and the Ethernet interface is RJ45 interfaces.

A kind of 7. binocular machine vision platform as claimed in claim 1, it is characterised in that：Also include jtag interface, it is described Jtag interface is connected with the dsp chip.