CN103108131A - Industrial camera - Google Patents
Industrial camera Download PDFInfo
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- CN103108131A CN103108131A CN2013100762053A CN201310076205A CN103108131A CN 103108131 A CN103108131 A CN 103108131A CN 2013100762053 A CN2013100762053 A CN 2013100762053A CN 201310076205 A CN201310076205 A CN 201310076205A CN 103108131 A CN103108131 A CN 103108131A
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Abstract
The invention provides an industrial camera which comprises an image sensor, an image acquirer and a communication interface, wherein an image signal shot by the digital image sensor is processed by the image acquirer and then transmitted to an industrial control computer through the communication interface; the communication interface is an Ethernet interface and comprises an interface board and an Ethernet physical layer board; the interface board comprises an RJ45 Ethernet connector connected with an Ethernet network and an I/O (Input/Ouput) interface connected between the image acquirer and the digital image sensor; the Ethernet physical layer board is connected between the interface board and the image acquirer; and an analog signal of the RJ45 Ethernet connector is processed and then input to the image acquirer. The industrial camera is high in transmission speed, high in stability, long in transmission distance, small in volume and easy to install and debug.
Description
Technical field
The invention belongs to the industrial camera field, particularly a kind of industrial camera with kilomega network interface, communicate by kilomega network interface and industrial computer etc.
Background technology
In industrial processes, the location of product, detection, identification are important links, and manual detection speed is slow, and accuracy is low, and is objective not.Vision Builder for Automated Inspection is because the characteristics of high speed, high stability, high consistency, high-accuracy have progressively substituted the personal monitoring.In addition, in the face of presenting of the problems such as the manufacturing industry cost of labor is lasting surging, senior skilled worker's famine, the production of all trades and professions, course of processing control, monitoring and product quality detect all wilderness demand image and machine vision technique, and the development trend of industry automation makes machine vision technique occupy more and more consequence in making production.
The conventional machines vision adopts analogue camera to add the industrial camera of capture card, USB interface and 1394 interfaces, and transmission speed is lower, and transmission range is short, and volume is large, therefore, need a kind of transmission speed fast, stability is high, transmission range is long, and volume is little, is easy to the digital industrial camera of installment and debugging.
Summary of the invention
The objective of the invention is in order to provide a kind of transmission speed fast, stability is high, and transmission range is long, volume is little, be easy to the digital industrial camera of installment and debugging, this camera has an Ethernet interface, and particularly a gigabit ethernet interface is communicated by letter with industrial computer.
The present invention for the technical scheme of completing its technical purpose and adopting is: a kind of industrial camera comprises image sensor board, image acquisition device and communication interface; The picture signal that described imageing sensor is taken is processed through image acquisition device and is sent to industrial control computer by communication interface, and described communication interface is Ethernet interface, comprises interface board and ethernet physical layer plate; Described interface board comprise the RJ45 ethernet connector that is connected with Ethernet and be connected in interface board and the ethernet physical layer plate between interface; Described ethernet physical layer plate is connected between interface board and image acquisition device, is input to described image acquisition device after the analog signal of RJ45 ethernet connector is processed.
Further, in above-mentioned industrial camera: described image sensor board comprises the analog signal of digital image sensor or analog image transducer and just analog image transducer collection and carries out the AD converter that AD changes.
Further, in above-mentioned industrial camera: also be provided with the aviation attachment unit interface that described imageing sensor is controlled on described interface board, adopted the I/O isolator between described aviation attachment unit interface and described imageing sensor.
Further, in above-mentioned industrial camera: described image acquisition device is fpga chip, and this fpga chip receives that view data is packed and Ethernet protocol sends to the ethernet physical layer plate after realizing.
Further, in above-mentioned industrial camera: described fpga chip comprises for the CPU that imageing sensor is controlled, receive the buffer of the picture signal of imageing sensor shooting, the data in buffer are processed the data processing module and the MAC module that is connected with the ethernet physical layer plate of the data flow that produces ethernet mac layer Module recognition.
Further, in above-mentioned industrial camera: described Ethernet interface is gigabit ethernet interface.
Further, in above-mentioned industrial camera: described digital image sensor is the imageing sensor of 300,000～1,000 ten thousand pixels.
The invention discloses a kind of industrial camera that adopts Ethernet interface, is that a kind of transmission speed is fast, and stability is high, and transmission range is long, and volume is little, is easy to the digital industrial camera of installment and debugging.
Below by with specific embodiments and the drawings, the present invention is further detailed.
Description of drawings
Accompanying drawing 1 is industrial camera structured flowchart of the present invention.
Accompanying drawing 2 is embodiment of the present invention FPGA internal structure block diagrams.
Accompanying drawing 3 is gigabit ethernet interface block diagrams of the embodiment of the present invention.
Embodiment
As shown in Figure 1, the present embodiment is a kind of industrial camera, comprises digital image sensor, image acquisition device and communication interface; The picture signal that digital image sensor is taken is processed through image acquisition device and is sent to industrial control computer by communication interface, and communication interface is Ethernet interface, comprises interface board and ethernet physical layer plate; Interface board comprise the RJ45 ethernet connector that is connected with Ethernet and be connected in image acquisition device and digital sensor between the I/O interface; The ethernet physical layer plate is connected between interface board and image acquisition device, is input to described image acquisition device after the analog signal of RJ45 ethernet connector is processed.If not digital image sensor, need the output of imageing sensor is changed by AD, produce data image signal.
Interface board: comprise RJ45 kilomega network connector and IO interface connector, RJ45 receives ethernet signal, the IO interface comprise power supply,, camera triggering signal, photoflash lamp output signal;
IO isolation: will trigger and blinker signal carries out being sent to FPGA after light-coupled isolation signal is controlled, and isolate and avoid the damage of fpga chip pin;
Power management module: the 12V power supply of outside input is transformed into the power supply that each chip of system needs, as: 3.3V, 1.2V, 2.5V etc.;
Ethernet PHY: with the analog signal of Ethernet interface change, decoding etc. connects in FPGA after processing;
Fpga chip: receive and send to PHY after the Ethernet protocol realization is packed, reached to view data, receive simultaneously camera control signal and sensor configuration information that the upper strata transmission comes, camera control signal is adjusted camera parameter after resolving, and sensor configuration information sends to imageing sensor through the I2C module of FPGA by the I2C interface; In addition, then the FPGA reception of also completing triggering signal sends triggering signal to imageing sensor and camera external flashing lamp according to camera parameter according to certain sequential;
The SDRAM buffer memory: the cache image sensing data provides the operation memory space for the soft core of camera simultaneously;
Image sensor board: comprise the indispensable devices of working sensor such as cmos image sensor, the power supply of 300,000～1,000 ten thousand pixels and the required crystal oscillator of working.
The fpga chip structure as shown in Figure 2, fpga chip comprises for the CPU that digital image sensor is controlled, receive the buffer of the picture signal of digital image sensor shooting, the data in buffer are processed the data processing module and the MAC module that is connected with the ethernet physical layer plate of the data flow that produces ethernet mac layer Module recognition.The function that data are processed (data process) module is to carry out the data reorganization with data reading and according to the receivable interface protocol of ethernet mac module in buffer, then mails to the MAC module.The view data of the output of the imageing sensor here, characteristics be large at sensor resolution or frame per second high in the unit interval data volume very large.
In the present embodiment, FPGA adopts parallel processing, has and processes the more ability of sophisticated functions, makes FPGA work more efficient, easily obtains high bandwidth, therefore can receive in real time, process, transmit the image information of high element sensor in the industrial camera project.
In FPGA, algorithm and control can be used software, and also available hardware realizes as shown in Figure 2.For control, adopt software to realize most of operation, and process for algorithm and data, adopt hardware to realize obtaining higher speed to satisfy performance index.If the software processing speed does not reach requirement, can utilize hardware to come accelerating algorithm, make the design can be more flexible.
The reconstruct of FPGA makes design have an almost unlimited flexibility, and it can be with meaning internal circuit line again, thereby can also reshuffle after system drops into on-the-spot the use, improved greatly the flexibility of system.
In the present embodiment, embed the CPU of 32 in FPGA, be used for the control to camera, reduced the use of control section to the FPGA resource, increased simultaneously the flexibility ratio of design, reduced the difficulty of control section; Simultaneously, the ethernet mac layer is implemented in FPGA, but to MAC flexible configuration, simplification etc., improves kilomega network interface effective bandwidth; Data processing and hop that bandwidth requirement is higher are all realized with hardware, effectively raised the bandwidth that data are processed, given play to the advantage of FPGA fully.
Can find out as Fig. 2, after the view data of transducer enters FPGA, transmission and processing procedure to data adopt hardware to realize fully, have reduced the time-delay in data processing and transmitting procedure, have farthest improved the bandwidth that data are processed and transmitted when guaranteeing high reliability.In system, the control of various piece realizes with a CPU fully, has reduced the difficulty that system controls, and has improved the flexibility of controlling, and makes code be more prone to safeguard and upgrade, and has reduced preventive maintenance time and the cost in later stage.
Be in holding state after camera powers on, wait for software unlatching camera and obtain image, when software is closed simultaneously, camera is in holding state again, reduced like this power consumption of system, reduced simultaneously the caloric value of system, improved Systems balanth and reliability.
The gigabit Ethernet that adopts in the present embodiment as shown in Figure 3, is the technology that is based upon on the ethernet standard basis.Gigabit Ethernet and a large amount of Ethernet that uses and Fast Ethernet are fully compatible, and utilized whole technical specifications of former ethernet standard defined, comprising defined management object in CSMA/CD agreement, ethernet frame, full duplex, flow control and IEEE 802.3 standards.A part as Ethernet, gigabit Ethernet is also supported the traffic management technology, it guarantees the service quality on Ethernet, these technology comprise the QoS bits of coded of IEEE 802.1P second layer priority, the 3rd layer of priority, especially the service and resource reservation protocol (rsvp).
In the present invention, MAC realizes with hardware in FPGA, increased the flexibility ratio that MAC is controlled, MAC is connected to outside 1000BASE-T PHY chip by gmii interface, SMI (Serial Management Interface) interface is adopted in the control of PHY, reduced the wiring of system PCB.
Claims (7)
1. an industrial camera, comprise image sensor board, image acquisition device and communication interface; The picture signal that described imageing sensor is taken is processed through image acquisition device and is sent to industrial control computer by communication interface, and it is characterized in that: described communication interface is Ethernet interface, comprises interface board and ethernet physical layer plate; Described interface board comprise the RJ45 ethernet connector that is connected with Ethernet and be connected in interface board and the ethernet physical layer plate between interface; Described ethernet physical layer plate is connected between interface board and image acquisition device, is input to described image acquisition device after the analog signal of RJ45 ethernet connector is processed.
2. industrial camera according to claim 1 is characterized in that: the AD converter that described image sensor board comprises digital image sensor or analog image transducer and the analog signal of analog image transducer collection carried out the AD conversion.
3. industrial camera according to claim 1 and 2, it is characterized in that: also be provided with the aviation attachment unit interface that described imageing sensor is controlled on described interface board, adopted the I/O isolator between described aviation attachment unit interface and described imageing sensor.
4. industrial camera according to claim 1 and 2, it is characterized in that: described image acquisition device is fpga chip, this fpga chip receives that view data is packed and Ethernet protocol sends to the ethernet physical layer plate after realizing.
5. industrial camera according to claim 4, it is characterized in that: described fpga chip comprises for the CPU that imageing sensor is controlled, receive the buffer of the picture signal of imageing sensor shooting, the data in buffer are processed the data processing module and the MAC module that is connected with the ethernet physical layer plate of the data flow that produces ethernet mac layer Module recognition.
6. industrial camera according to claim 1, it is characterized in that: described Ethernet interface is gigabit ethernet interface.
7. industrial camera according to claim 2, it is characterized in that: described imageing sensor is the imageing sensor of 300,000～1,000 ten thousand pixels.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100762053A CN103108131A (en) | 2013-03-11 | 2013-03-11 | Industrial camera |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100762053A CN103108131A (en) | 2013-03-11 | 2013-03-11 | Industrial camera |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908455A (en) * | 2017-03-14 | 2017-06-30 | 长沙麦斯森信息科技有限公司 | IMAQ terminal, glass surface defects on-line detecting system and method |
| CN108259747A (en) * | 2018-01-26 | 2018-07-06 | 武汉精测电子集团股份有限公司 | A kind of image capturing system based on SOC |
| CN110579285A (en) * | 2019-10-10 | 2019-12-17 | 天津吉诺科技有限公司 | thermocouple measuring module based on field bus and measuring method thereof |
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| CN101184167A (en) * | 2007-12-14 | 2008-05-21 | 西安交通大学 | Industry intelligent camera |
| CN101276218A (en) * | 2008-04-29 | 2008-10-01 | 上海交通大学 | Machine vision system aiming at high real time image collecting and processing |
| CN101393010A (en) * | 2008-08-11 | 2009-03-25 | 张育民 | Embedded vision detecting system |
| CN101426015A (en) * | 2008-12-12 | 2009-05-06 | 北京航空航天大学 | IEEE1394/GbE converter oriented to multimedia transmission and data collection system |
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Patent Citations (5)
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| CN2556737Y (en) * | 2002-06-13 | 2003-06-18 | 山东清华紫光凯远信息技术有限公司 | Container gate data collecting and control device for customs |
| CN101184167A (en) * | 2007-12-14 | 2008-05-21 | 西安交通大学 | Industry intelligent camera |
| CN101276218A (en) * | 2008-04-29 | 2008-10-01 | 上海交通大学 | Machine vision system aiming at high real time image collecting and processing |
| CN101393010A (en) * | 2008-08-11 | 2009-03-25 | 张育民 | Embedded vision detecting system |
| CN101426015A (en) * | 2008-12-12 | 2009-05-06 | 北京航空航天大学 | IEEE1394/GbE converter oriented to multimedia transmission and data collection system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908455A (en) * | 2017-03-14 | 2017-06-30 | 长沙麦斯森信息科技有限公司 | IMAQ terminal, glass surface defects on-line detecting system and method |
| CN108259747A (en) * | 2018-01-26 | 2018-07-06 | 武汉精测电子集团股份有限公司 | A kind of image capturing system based on SOC |
| CN108259747B (en) * | 2018-01-26 | 2020-07-14 | 武汉精测电子集团股份有限公司 | Image acquisition system based on SOC |
| CN110579285A (en) * | 2019-10-10 | 2019-12-17 | 天津吉诺科技有限公司 | thermocouple measuring module based on field bus and measuring method thereof |
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