CN106454023A - USB3.0 CMOS linear array industrial camera - Google Patents
USB3.0 CMOS linear array industrial camera Download PDFInfo
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- CN106454023A CN106454023A CN201610804862.9A CN201610804862A CN106454023A CN 106454023 A CN106454023 A CN 106454023A CN 201610804862 A CN201610804862 A CN 201610804862A CN 106454023 A CN106454023 A CN 106454023A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
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Abstract
The invention discloses a USB3.0 CMOS linear array industrial camera, which is an industrial camera adopting a USB3.0 interface and a CMOS linear array image sensor, and is used for increasing acquisition speed and image resolution, reducing camera volume and reducing cost and power consumption. The industrial camera comprises a USB3.0 universal bus interface and a controller thereof, a programmable logic device (PLD), a synchronous random access memory DDR3, a field programmable gate array (FPGA), a linear array CMOS image sensor, and a power supply management module. The camera is connected with a host after startup; the camera automatically performs USB2.0 device enumeration and then performs USB3.0 device enumeration; if the USB3.0 device enumeration succeeds, the transmission bandwidth of a USB device is set to be 5Gb/s, otherwise, the transmission bandwidth of the USB device is set to be 480Mb/s; image parameters, camera hardware splicing parameters and a working mode are set, and image data acquisition and external triggering mode query are carried out; an external triggering signal is received, otherwise, a software triggering mode is queried; a software triggering instruction is received, otherwise, an automatic continuous working mode is accessed; an image linear array signal is acquired; 12bit to 8bit image compression is carried out; image hardware splicing is performed; and therefore, the acquisition is finished.
Description
(1) art
The present invention relates to industrial camera, particularly there is the CMOS linear array industrial camera of USB3.0 interface.
(2) background technology
Industrial camera is one of NI Vision Builder for Automated Inspection key component, compared to traditional camera, has high image steady
Qualitative, high-transmission bandwidth and high anti-jamming capacity etc., industrial camera is the phase based on CCD or CMOS chip mostly on the market at present
Machine.Adopt the output of the format signals such as PAL/NTSC/SECAM/S-VIDEO more the industrial camera of early stage, need to be equipped with special image
Capture card just can be converted into the accessible digital information of computer.With GigE/USB/IEEE/DCOM/Camera Link
The development of the digital interface technology such as LVDS and popularization, more and more the traditional analogue camera of industrial digital camera replacement goes out at present
Now in various NI Vision Builder for Automated Inspection applications.Industrial camera can be divided into line-scan digital camera, face battle array according to the architectural characteristic of sensor
Camera.
Line array CCD has structure simply, lower-cost feature.A line vision signal can be stored simultaneously.Because it is single
The number of row's photosensitive unit can be made a lot, and on the premise of equal certainty of measurement, it is larger that its measurement range can be done, and
And due to line array CCD real-time Transmission light-to-current inversion signal with self-scanning speed is fast, frequency response is high, it is capable of kinetic measurement,
And can work under low-light (level), so line array CCD be widely used in product size measurement and classification, noncontact dimension measurement,
The many such as bar code fields.
Industrial camera is installed for convenience, improves image transmitting rate, and number of patent application is that CN200910243884.2 is " a kind of
The document of USB digital industrial camera " " discloses a kind of USB Techno-Industrial phase of the black and white/colour being applied to field of machine vision
Machine, it by several functions Highgrade integration in camera internal, using USB2.0 data output interface and total pixel 1,400,000～500
The ccd image sensor of ten thousand pixels, can be triggered by external signal or continuous acquisition, have that picking rate is fast, image clearly
The features such as spend high.USB digital industrial camera adopt software and hardware combining design philosophy, by USB interface, realize camera hardware and
Communication between the demoware running on PC, has further facilitated user and has carried out the access of data and the prison of industrial process
Control.”
Recently as the lifting at full speed of IMAQ speed, above industrial camera has following deficiency：1. adopt CCD to scheme
As the industrial camera of sensor, power consumption is bigger than the industrial camera of cmos image sensor, so under high picking rate, camera
Power consumption is inevitable quite huge.2. adopt area array sensor picture quality lower than same price line scan image sensor image definition,
3.GigE interface camera bandwidth is restricted 1.25Gb/s, USB2.0 interface camera bandwidth only 480Mb/s, all cannot meet higher
The requirement of picking rate.The high still interface bulky of Camera Link interface bandwidth, simultaneously need to be equipped with expensive adopting
Limited by truck, application cost and ease of use.
For above deficiency, the present invention adopts USB3.0 interface, linear CMOS image sensor, and USB3.0 interface bandwidth is high
Reach 5Gbps, collected by camera speed and resolution ratio can be greatly improved, reduce system schema cost, reduce camera volume and power consumption, carry
High image quality, realizes splicing compression scheduling algorithm in hardware simultaneously, mitigates main frame calculation process pressure, especially should in multiple stage camera
With the more aobvious advantage of occasion.Linear CMOS image sensor resolution ratio is up to 100K from 2K～12K, frequency acquisition, can meet at a high speed
High-resolution challenging needs.
The present invention includes camera structure and includes as lower module：USB3.0 general purpose interface bus and its controller, programmable patrol
Collect chip PLD, synchronous random access memory DDR3, field programmable gate array FPGA, linear CMOS image sensor, power management mould
Block；
CMOS line scan image sensor experiences picture signal, and PLD output driving sequential is to imageing sensor, imageing sensor
Put into effect pixel and clock signal clk, viewdata signal DATA, synchronized data signal LVAL are sent to FPGA core PLD
Module, carries out data recombination conversion, output difference data-signal LVDS signal can to scene in FPGA core PLD module
Programmed array FPGA；Field programmable gate array FPGA passes through memory DDR3 buffering image data, carries out data splicing simultaneously, with
When exported by GPIFII interface to the data buffer zone of USB3.0 controller, finally by USB3.0 controller by Universal USB 3.0
Interface engine transmits to USB3.0 main frame HOST end.In addition main frame can send control instruction to USB3.0 controller, and USB3.0 is controlled
Device processed arranges FPGA mode of operation and Image Processing parameter by SPI interface, may also set up linear CMOS image sensor figure
As acquisition parameter.
Its workflow is：After start, camera is connected main frame, camera carries out USB2.0 device enumeration automatically, then carry out
USB3.0 device enumeration, it is 5Gb/s that the success of USB3.0 device enumeration then arranges USB device transmission bandwidth, otherwise arranges USB device
Transmission bandwidth is 480Mb/s；Subsequently setting image parameter, setting camera hardware splicing parameter, mode of operation is set, carries out image
Data acquisition, carries out external trigger mode of operation inquiry, and external trigger pattern then accepts external trigger signal, otherwise query software triggering work
Operation mode, software triggering then accepts software triggering command, otherwise carries out Automatic continuous mode of operation, gathers image linear array signal,
Carry out 12bit to 8bit compression of images again, graphics hardware splices, complete to gather, end-of-job.
(3) content of the invention
It is an object of the invention to provide a kind of adopt USB3.0 interface, the camera of CMOS line scan image sensor, improve
Picking rate and image resolution ratio, reduce camera volume, reduces cost and power consumption.
The object of the present invention is achieved like this：Camera structure is included as lower module：USB3.0 general purpose interface bus and its
Controller, programmable logic chip PLD, synchronous random access memory DDR3, field programmable gate array FPGA, linear array cmos image pass
Sensor, power management module；
CMOS line scan image sensor experiences picture signal, and PLD output driving sequential is to imageing sensor, imageing sensor
Put into effect pixel and clock signal clk, viewdata signal DATA, synchronized data signal LVAL are sent to FPGA core PLD
Module, carries out data recombination conversion, output difference data-signal LVDS signal can to scene in FPGA core PLD module
Programmed array FPGA；Field programmable gate array FPGA passes through memory DDR3 buffering image data, carries out data splicing simultaneously, with
When exported by GPIFII interface to the data buffer zone of USB3.0 controller, finally by USB3.0 controller by general programmable
Interface GPIF transmission 32bit signal and pass through serial peripheral equipment interface SPI input peripheral signal, USB3.0 interface engine transmit to
USB3.0 interface；
Its workflow is：After start, camera is connected main frame, camera carries out USB2.0 device enumeration automatically, then carry out
USB3.0 device enumeration, it is 5Gb/s that the success of USB3.0 device enumeration then arranges USB device transmission bandwidth, otherwise arranges USB device
Transmission bandwidth is 480Mb/s；Subsequently setting image parameter, setting camera hardware splicing parameter, mode of operation is set, carries out image
Data acquisition, carries out external trigger mode of operation inquiry, and external trigger pattern then accepts external trigger signal, otherwise query software triggering work
Operation mode, software triggering then accepts software triggering command, otherwise carries out Automatic continuous mode of operation, gathers image linear array signal,
Carry out 12bit to 8bit compression of images again, graphics hardware splices, complete to gather, end-of-job.
(4) brief description
The concrete structure workflow of the present invention is given by below example and its accompanying drawing 1, accompanying drawing 2.Accompanying drawing 1 is
USB3.0CMOS linear array
Industrial camera hardware configuration theory diagram.Accompanying drawing 2 is USB3.0CMOS linear array industrial camera workflow diagram.
(5) specific embodiment
The running of the present invention is as follows：
(1) accompanying drawing 1 gives the hardware configuration of the present invention, carries out welding assembly to hardware as illustrated, and is connect by usb
Mouth is implanted to driver in ddr3.The present invention includes：USB3.0 general purpose interface bus and its controller, FPGA core
Piece PLD, synchronous random access memory DDR3, field programmable gate array FBGA, linear CMOS image sensor, power management module.
The operation principle of the present invention is：Camera is connected with main frame by usb bus and provides power supply needed for camera.This power supply by
Power supply needed for power management module each module offer to camera internal.CMOS line scan image sensor experiences picture signal, when
Clock signal CLK, normal data signals DATA, long data-signal LVAL send FPGA core PLD module to, patrol programmable
Collect core PLD module, the long data-signal LVDS signal of output to field programmable gate array FPGA；Field programmable gate array FPGA, with
When 32bit signal is transmitted by general programmable interface GPIF and inputted by serial peripheral equipment interface SPI by USB3.0 controller
Peripheral hardware signal, field programmable gate array FPGA is controlled by synchrodata random access memory DDR3 Program, field programmable gate array
After FPGA is processed, the incoming DDR3 of data-signal stores, and the picture signal after field programmable gate array FPGA process is finally via general
Programmable interface GPIF enters USB3.0 controller and passes through USB3.0 bus and main-machine communication.
(2) workflow of the present invention is as shown in Figure 2.Its running is as follows：
After start, camera is connected main frame and carry out USB2.0 device enumeration, then carry out USB3.0 device enumeration, USB3.0 sets
Standby then setting USB device transmission bandwidth of enumerating successfully is 5Gb/s, and otherwise setting USB device transmission bandwidth is 480Mb/s；Subsequently
Setting image parameter, setting camera hardware splicing parameter, mode of operation is set, carries out image data acquiring, carry out external trigger work
Operation mode is inquired about, and external trigger pattern then accepts external trigger signal, otherwise query software triggering mode of operation, and software triggering then accepts
Software triggering command, otherwise carries out Automatic continuous mode of operation, gathers image linear array signal, then carries out 12bit to 8bit image
Compression, graphics hardware splices, and completes to gather, end-of-job.
(3) mechanical appearance of the present invention is as shown in Figure 3.Machine size 29mm*30mm*44mm；There is 32UNC camera lens standard front end
Interface；There are USB3.0 interface and external trigger interface in rear end.
(4) each specifications parameter of the present invention is as shown in Figure 4.Design parameter is as follows：
1st, imageing sensor：CMOS；
2nd, resolution ratio：4096×1
3rd, pixel dimension：3.5μm×3.5μm
4th, shutter：Overall situation exposure
5th, line frequency：80kHz
6th, black and white/colour：Black and white
7th, interface：USB3.0
8th, image output format：Raw8/Mono8
9th, pixel locating depth：8/12bits
10th, Synchronization Control：Free schema/soft triggering pattern/external trigger pattern/fixed frequency modes
11st, spectrum assignment：Manual/auto
12nd, skin temperature：0～50 DEG C
13rd, lens interface：C-mount
14、GPIO：1 tunnel input/1 tunnel output
15th, operating temperature：0～50 DEG C
16th, power requirement：USB3.05V@900mA
17th, shell sizes：29mm×44mm×30mm(H×W×L)
Above example is intended merely to better illustrate the practical application of the present invention, is not meant to limit the present invention.This
The technical characteristic of invention is defined in the patent claims.
Claims (3)
1.USB3.0CMOS linear array industrial camera, its technical characteristic is：Camera structure is included as lower module：USB3.0 versabus
Interface and its controller, programmable logic chip PLD, synchronous random access memory DDR3, field programmable gate array FPGA, linear array
Cmos image sensor, power management module；
CMOS line scan image sensor experiences picture signal, PLD output driving sequential to imageing sensor, and imageing sensor exports
Pixel clock signal CLK, viewdata signal DATA and synchronized data signal LVAL send FPGA core PLD module to,
Carry out data recombination conversion in FPGA core PLD module, output difference data-signal LVDS signal is to field-programmable
Array FPGA, field programmable gate array FPGA pass through memory DDR3 buffering image data, carry out data splicing simultaneously, lead to simultaneously
Cross GPIF interface to export to the data buffer zone of USB3.0 controller, finally by USB3.0 controller by general programmable interface
GPIF transmission 32bit signal and pass through serial peripheral equipment interface SPI input peripheral signal, by USB3.0 interface engine transmit to
USB3.0 interface；
Its workflow is：After start, camera is connected main frame, camera carries out USB2.0 device enumeration automatically, then carry out USB3.0
Device enumeration, it is 5Gb/s that the success of USB3.0 device enumeration then arranges USB device transmission bandwidth, otherwise arranges USB device transmission belt
A width of 480Mb/s；Subsequently setting image parameter, setting camera hardware splicing parameter, mode of operation is set, carries out view data and adopt
Collection, carries out external trigger mode of operation inquiry, external trigger pattern then accepts external trigger signal, otherwise query software triggering Working mould
Formula, software triggering then accepts software triggering command, otherwise carries out Automatic continuous mode of operation, gathers image linear array signal, then enters
Row 12bit to 8bit compression of images, graphics hardware splices, and completes to gather, end-of-job.
2. camera according to claim 1, is characterized in that camera first carries out USB2.0 device enumeration, then carries out USB3.0 equipment
Enumerate, and enumerate and be respectively provided with different transmission bandwidths according to whether USB3.0 can be carried out.
3. camera according to claim 1, is characterized in that first gathering image linear array signal, then carries out 12bit to 8bit image
Compression, subsequently carries out hardware splicing to image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610804862.9A CN106454023B (en) | 2016-09-07 | 2016-09-07 | USB3.0CMOS line array industrial camera |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610804862.9A CN106454023B (en) | 2016-09-07 | 2016-09-07 | USB3.0CMOS line array industrial camera |
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| Publication Number | Publication Date |
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| CN106454023A true CN106454023A (en) | 2017-02-22 |
| CN106454023B CN106454023B (en) | 2022-02-08 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108184080A (en) * | 2017-12-28 | 2018-06-19 | 中国科学院西安光学精密机械研究所 | High-speed CMOS linear array camera for machine vision |
| CN108924460A (en) * | 2018-06-20 | 2018-11-30 | 中国科学院西安光学精密机械研究所 | Image data acquisition box and image acquisition system |
| CN112714244A (en) * | 2019-10-25 | 2021-04-27 | 保定市天河电子技术有限公司 | Image acquisition method and system based on linear array camera |
| CN112834035A (en) * | 2020-12-28 | 2021-05-25 | 中国科学院合肥物质科学研究院 | CMOS (complementary Metal oxide semiconductor) driving circuit of micro spectrometer |
| CN114025077A (en) * | 2020-09-14 | 2022-02-08 | 刘武平 | Image acquisition method and acquisition system |
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| CN114025077A (en) * | 2020-09-14 | 2022-02-08 | 刘武平 | Image acquisition method and acquisition system |
| CN114025077B (en) * | 2020-09-14 | 2024-01-09 | 刘武平 | Image acquisition method and acquisition system |
| CN112834035A (en) * | 2020-12-28 | 2021-05-25 | 中国科学院合肥物质科学研究院 | CMOS (complementary Metal oxide semiconductor) driving circuit of micro spectrometer |
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