CN201383142Y

CN201383142Y - Embedded machine vision controller

Info

Publication number: CN201383142Y
Application number: CN200920051410U
Authority: CN
Inventors: 王林兴; 李钦; 邓烈锋
Original assignee: Shenzhen Brightsky Computer Tech Co Ltd
Current assignee: Shenzhen Brightsky Computer Tech Co Ltd
Priority date: 2009-02-20
Filing date: 2009-02-20
Publication date: 2010-01-13
Anticipated expiration: 2019-02-20

Abstract

An embedded machine vision controller comprises a power, a processor, a north/south bridge chip, a display unit, a storage unit and an input/output unit. The processor is connected with the north/south bridge chip, a power control unit is connected with the processor, and the processor is meanwhile connected with a system clock; the north/south bridge chip utilizes ISA bus to realize the connection with a controller local area network and a PLC (programmable logic controller) respectively, and is connected with the display unit, the storage unit, and the network unit, and further connected with a firmware and an input chip SIO (serial input/output); and an digital I/O device, a mouse keyboard, a serial port and a parallel port are integrated on the SIO. The embedded machine vision controller has the advantages of high application degree, strong expandability and great function, and can save large amounts of investment for the machine-vision secondary system integration development.

Description

The embedded machine vision controller

Technical field

The utility model relates to a kind of embedded machine vision controller that is used for vision software development and test.

Background technology

Realize that from the technology of existing machine vision machine vision comprises three sport technique segments: image acquisition, data analysis and input and output control.Image acquisition its objective is to collect to satisfy analyzes the respective quality image that requires, and this is the basis of Vision Builder for Automated Inspection; I.e. figure image intensifying of data analysis and processing its objective is the functional requirement according to machine vision, and the image that collects is carried out analyzing and processing, export the result then, and this is the core of Vision Builder for Automated Inspection; Input and output control comprises and to reach the purpose of accurate images acquired, also comprises the result according to Flame Image Process and analysis by controller device vision system itself, output signal, driving corresponding machine, the function of realization Vision Builder for Automated Inspection.The formation of a typical machine vision system generally comprises: light source, optical system (camera lens), video camera, image pick-up card, computing machine (or image processing system), image processing software, input and output control, topworks etc.Wherein, light source, optical system (camera lens), video camera, image pick-up card, computing machine belong to the images acquired sport technique segment, and computing machine (or image processing system), image processing software belong to the data analysis technique link, and all the other belong to the control technology link.

In the image technique link, the function of image pick-up card is that the video data of video camera output is gathered in real time, and the data-interface with computing machine is provided, and makes things convenient for computing machine to handle the image that collects.Image pick-up card can be divided into analog image capture card and digital image acquisition card according to the vision signal of gathering; Be divided into pci bus, PC104 bus, IEEE1394, USB etc. according to data transfer mode.Be that all requisite computing machine then mainly adopts industrial computer on picture, analysis or the controlling unit adopting, be aided with professional bus capture card simultaneously.

Available data capture card+computing machine is as the major defect of machine vision analysis and Control system:

1, do not have the core unit of the machine vision industrial computer of specialty as the visual development system, this has brought inconvenience for the development of domestic field of machine vision;

2, the data collecting card kind is frequently many, and function is most single, is unfavorable for expansion, and market is mainly leading by foreign brands;

3, form hardware plan by existing machine vision, the huge redundancy of system, the cost of development height can not form market standard.

The utility model content

The utility model purpose is to provide a kind of application integration degree height, strong, the powerful embedded machine vision controller of extensibility.

At above-mentioned technical matters, the utility model adopts following technical scheme: a kind of embedded machine vision controller, comprise parts such as power supply, processor, north and south bridge chip, display unit, storage unit, input-output unit, it is characterized in that, processor is connected with the north and south bridge chip, power control unit is connected to processor, and processor is connected with system clock simultaneously; The north and south bridge chip utilizes isa bus to be connected with Programmable Logic Controller with controller local area network respectively.

The technical scheme that realizes the utility model purpose further comprises:

Also be connected with display unit, storage unit and network element on the bridge chip of described north and south.

Also be connected with firmware and input chip SIO on the bridge chip of described north and south, be integrated with digital I/O equipment and mouse-keyboard, serial ports and parallel port on the input chip.

The beneficial effects of the utility model are,

1, the utility model improves the complex patterns of former machine vision hardware platform data collecting card+industrial computer+industrial bus card commonly used, it is promoted to abandoning data collecting card, directly utilize integrated high speed data transfer agreement of built-in industrial mainboard and industrial bus interface, pile up with the oneself of an integrated integrated circuit board and promptly realize high speeds open, many expansions.

2, by the abundant IO interface of embedded main board, provide multiple image data transmission mode, comprise a plurality of interfaces such as USB, PC104, IEE1394, make things convenient for Vision Builder for Automated Inspection secondary development person's peripheral hardware to select.

3, in this embedded hardware Integrated Solution, specially for the industrial CCD camera supporting the IEEE1394 bus transmission model, the IEEE1394 bus is the fastest high-speed serial bus in the computer technology so far, high transmission speed can reach 400M, real point-to-point transmission, satisfied the demand of big data digital image, simultaneously transmission digital video signal and digital audio and video signals, 1394 technology are in the loss of gathering and returning in the record process without any signal.In the utility model, supporting 3 1394 interfaces can be supported 3 CCD cameras simultaneously, and great amount of cost is saved in the integrated exploitation of electrical secondary system that can be machine vision.

4, the direct performance of the high-speed transfer of IEEE1394 directly can replace traditional data collecting card, it is controller local area network that while this programme has more designed CAN industrial bus (Controller Area Network), compare with general communication bus, the data communication of CAN bus has outstanding reliability, real-time and dirigibility.Because the characteristics of CAN bus itself, its range of application no longer is confined to automobile industry at present, and, almost can be applicable to the application of all machine vision to the development of fields such as automatic control, Aero-Space, navigation, process industrial, mechanical industry, textile machine, farm machinery, robot, numerically-controlled machine, medicine equipment and sensor.

Description of drawings

Fig. 1 is the utility model one-piece construction block diagram.

Fig. 2 is the utility model example structure block diagram.

Embodiment

Below in conjunction with drawings and Examples to the explanation that makes an explanation of the utility model dependency structure and function.

As Fig. 1 is the utility model one-piece construction block diagram.Processor is as the control core of this controller integral body, and it is connected respectively with Power Management Unit and system clock, and is connecting the north and south bridge chip simultaneously.The north and south bridge chip is connecting display unit, storage unit, network element, also connecting firmware and input chip SIO, be integrated with digital I/O equipment and mouse-keyboard on the SIO, serial ports and parallel port, the north and south bridge chip also connects (the Controller Area Network of controller local area network respectively by isa bus, CAN) and Programmable Logic Controller (ComplexProgrammable Logic Device CPLD), realizes the editor's input to the utility model control system.

Fig. 2 is the utility model example structure block diagram.In the present embodiment, its CPU is Celeron-M CPU, north bridge chips is 82852GME, internal memory directly is connected with it with high speed equipment such as demonstrations, South Bridge chip is 82801DB, hard disk, USB interface are directly by this chip output control, network interface is the RTL8100CL chip, connect by pci bus, other I/O interfaces, the IT8712F that passes through as Parallel Port, Serial Port, Keyboard, Mouse etc. connects control, the auxiliary circuit that also promising in addition CPU works, as reset, power management, clock etc.By the IT8888 chip, pci bus can transfer isa bus to, and CAN bus chip SJA1000 and CPLD chip XC9536 carry out communication by isa bus and CPU module.

According to functional block its each several part is described respectively below:

1、CPU

Celeron-M CPU is a high-performance, the mobile patch-type processor of low-power consumption, adopt 0.13um technology, have the level cache of 32KB and the L2 cache of 512KB, 400MHz Front Side Bus speed, highest frequency reaches 1.5GHz, and thermal value is littler than desktop type CPU, can adopt heat radiator to dispel the heat during work.Its kernel is the X86 compatibility, has certain advantage aspect software and the system compatibility.

Its inner integrated Float Point Unit, Advanced Program Zoom control module, support multimedia MMX technology, have figure quicken function, with the softwarecompatible of IA-32 framework.

2, north bridge

North bridge 82852GME is connected with CPU by the FSB bus, receives and send the order and the data of CPU processor.It supports 64 DDR sdram memorys, the maximum 2GB memory size of supporting, and speed reaches 266MHz; Chip comprises the 2D/3D graphics accelerator, and graphics process speed reaches 133MHz, and DVO is arranged, and the LVDS interface is supported the dynamic display memory of 64M; Comprise 8259 interrupt handlers in the chip, the Advanced Program Zoom function; And link to each other with south bridge 82801DB by HUBI/F.

3, south bridge

Numerous bus interface that south bridge is mainly integrated are the bridges that carry out communication with external unit.It comprises PCI V2.2 bus, can connect the equipment of expanding various pci buss; IDE, USB interface are arranged; Have interruption, power management function, real time clock module, DMA control module, I2C bus and GPIO function.

4, I/O connects

By lpc bus, Super I/O IT8 712F is connected on the south bridge 82801DB, and IT8712F mainly connects each input-output device, parallel port for example, serial ports, equipment such as keyboard and mouse.

5, Can bus

CAN bus chip SJA1000 is connected on the isa bus that is expanded by PCI, it is an independent CAN bus control chip, compatible up-to-date CAN 2.0B agreement, it selects 82C250 as transceiver, and in addition photoelectricity is isolated, guarantee that input and output do not disturb mutually, thereby improve the stability of system works.

6. programmable logic device (PLD)

Programmable logic device (PLD) adopts XC9536, and it and CAN chip are connected on the isa bus simultaneously, and address, the data of CAN chip are controlled.

For every function-stable of guaranteeing system work long hours, the utility model needs to consider also to deal carefully with following several technological difficulties in concrete enforcement:

1, the designing treatment of high speed signal: the processing of HW High Way will design two aspects from principle design and PCB and consider.Aspect principle design, because signal wire is operated in high frequency, for example, the transfer rate of the signal bus of CPU and north bridge is at 400MHz, so must their reflection, problems of Signal Integrity such as vibrate, crosstalk when signal transmits of complete consideration, correct calculation goes out impedance matching resistance, the data of filter capacitor.Aspect PCB, note in wiring, can consider HW High Way is done bag ground isolation processing, in order to avoid be subjected to the interference of other signals, simultaneously, can not remove to disturb other signal wire, in addition, accurate Calculation is also wanted in impedance matching, thereby guarantees that signal can accurately transmit.

2, aspect CPLD, need fully to understand requirement of client, according to the XC9536 data, understand the effect and the setting of a register, and possess skilled VDHL art of programming, and drive the related hardware circuit thereby work out corresponding program, reach the requirement of design function.If the data to chip does not have thorough, thorough understanding, to programming language not on top of, the program of the satisfactory steady running of just can't programming.

3, San Re processing: in order to guarantee the operation long-term and stably of system, to not adopt fan to dispel the heat, and adopt heat radiator to dispel the heat, and therefore need design cooling system, in time the heat of mainboard is distributed, otherwise will cause system in case of system halt because of high temperature.For the assurance system can be in the environment of high temperature steady operation, can be with reference to the mode of the heat radiation diversion trench of notebook computer, system designs cooling system all sidedly, and simulates high-temperature work environment in high-temperature cabinet, verify cooling system repeatedly, thereby the assurance system can work long-term and stably.

Claims

1, a kind of embedded machine vision controller, comprise parts such as power supply, processor, north and south bridge chip, display unit, storage unit, input-output unit, it is characterized in that, processor is connected with the north and south bridge chip, power control unit is connected to processor, and processor is connected with system clock simultaneously; The north and south bridge chip utilizes isa bus to be connected with Programmable Logic Controller with controller local area network respectively.

2, embedded machine vision controller according to claim 1 is characterized in that, also is connected with display unit, storage unit and network element on the bridge chip of north and south.

3, embedded machine vision controller according to claim 1 is characterized in that, also is connected with firmware and input chip SIO on the bridge chip of north and south, is integrated with digital I/O equipment and mouse-keyboard, serial ports and parallel port on the input chip.