CN107367232A - Strip width detection method based on embedded processing systems and gigabit Ethernet - Google Patents
Strip width detection method based on embedded processing systems and gigabit Ethernet Download PDFInfo
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- CN107367232A CN107367232A CN201610312961.5A CN201610312961A CN107367232A CN 107367232 A CN107367232 A CN 107367232A CN 201610312961 A CN201610312961 A CN 201610312961A CN 107367232 A CN107367232 A CN 107367232A
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- strip width
- gigabit ethernet
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- dsp
- steel plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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Abstract
The present invention relates to a kind of strip width detection method based on embedded processing systems and gigabit Ethernet, using embedded strip width detecting and controlling system, passes through the image information of DSP control high speed linear array CCD camera collection steel plates；Strip image is analyzed and handled with Edge Search algorithm by DSP, obtains strip width information, the strip width information transfer handled well is provided to support to host computer for production by gigabit Ethernet.Instant invention overcomes the shortcomings of the precision of traditional strip method for measuring width generally existing is low, detection device is numerous and jumbled, poor anti jamming capability, provide a kind of strip width detection method based on embedded processing systems and gigabit Ethernet, realize strip width accurately to detect online, accuracy of detection can reach 0.5mm；Its detecting system integrated level is high, data transmission capabilities are strong, ensures that strip width measurement data in real time, accurately, saves system resource, and safeguard simple and convenient.
Description
Technical field
The present invention relates to technical field of steel strip production, more particularly to a kind of band based on embedded processing systems and gigabit Ethernet
Steel checking method for width.
Background technology
During belt steel rolling, with the introduction of numerous Controlling models, strip width as model parameter, it is necessary in real time,
It is accurately transmitted in model, and then control action is played to mill milling；Strip width is as in steel rolling process simultaneously
Important parameter directly determines the lumber recovery and production cost of strip, and width difference often reduces 1mm, and lumber recovery can improves
0.1% or so, therefore advanced width control system technology can significantly improve Business Economic Benefit and product competitiveness.
In modern metallurgy industry, strip width measurement turns into the important step in quality control, at present, applies in strip gold
Method for measuring width in category Material Manufacturing Process mainly has two kinds：One kind is to utilize laser width finding, and another kind is to utilize CCD
Sensor is surveyed wide.Wherein laser width finding principle is the measurement plate band metal material width by way of ranging, is beated by band
Influence, be suitable only for cut deal, strip is beated less production line.
Patent No. CN 103240283A Chinese patent discloses " a kind of strip width automatic testing method ", its principle
It is that strip both sides are respectively arranged two groups of X ray Thickness sensitivity units, carries out strip and seek side operation, detected by displacement transducer
Moving distance value, then by calculating strip width value.But the accuracy of detection of its checking method for width provided can only achieve 1mm,
And principle is complicated, poor operability.
In the bright academic dissertations delivered of Research And Design Institute Of Metallurgical Automation Cheng Hong in 2010, disclose《CCD photoelectric width gauges
The development of device》One text, Width detecting instrument described in it include CCD clocks and amplifying circuit, CCD clock driver circuits,
Camera, synchronous exposure and binarization circuit, photoelectric coupling pulse-scaling circuit, I/O plates, relay output board, simulation
Amount output tablet etc..But the level of integrated system of this strip width measuring method is low, adds the degree of redundancy of system, makes
System becomes numerous and jumbled.
The content of the invention
Instant invention overcomes the precision of traditional strip method for measuring width generally existing is low, detection device is numerous and jumbled, antijamming capability
The shortcomings of poor, there is provided a kind of strip width detection method based on embedded processing systems and gigabit Ethernet, realize band
Steel width accurately detects online, and accuracy of detection can reach 0.5mm；Its detecting system integrated level is high, data transmission capabilities are strong,
Ensure that strip width measurement data in real time, accurately, saves system resource, and safeguard simple and convenient.
In order to achieve the above object, the present invention is realized using following technical scheme：
Strip width detection method based on embedded processing systems and gigabit Ethernet, comprises the following steps：
1) the embedded strip width detecting and controlling system using digital signal processor DSP as core devices is used, passes through DSP
Control the image information of high speed linear array CCD camera collection steel plate；
2) embedded strip width detecting and controlling system is by DSP, power module, gigabit Ethernet communication module, clock mould
Block, data memory module and extended debugging module composition；Power module is used to provide burning voltage for system, and clock module is used
In providing precision interval clock for high-speed digital video camera；Extended debugging module is used for the installation and debugging of online equipment；
3) strip image is analyzed and handled with Edge Search algorithm by DSP, obtained strip width information, pass through
Gigabit Ethernet to host computer, the strip width information transfer handled well is provided to support for production.
The difference in gray scale be present using the image of steel plate both sides of edges using Edge Search algorithm to be detected；Specifically utilize
Shade of gray threshold search algorithm carries out rim detection to steel plate, and its step is：
1) suspicious points are searched for；The edge of vertical direction is detected by way of row scans, if (x, y) is a certain picture in image
Vegetarian refreshments coordinate, f (x, y) is the gray value, if meet f (x, y)-f (x-1, y) ＞ σ, and 0 ＜ x ＜ X, 0 ＜ y ＜ Y,
So (x, y) is suspicious points；σ is the reference value of setting in above formula, and X represents steel plate lateral coordinates, and Y represents the vertical of steel plate
To coordinate；
2) the most region of suspicious points is found；Set x regions as：(x1, x2), 0≤x1 ＜ x2 ＜ X；Y regions are：
(y1, y2), 0≤y1 ＜ y2 ＜ Y；If suspicious points are distributed most in (x1, x2) and (y1, y2), then (x1, x2)
Or (y1, y2) is exactly section where steel plate edge；For identical ordinate y 2 points (x1, y1), (x2, y1) will
Abscissa subtracts each other to obtain Δ x, and Δ x is the width information of steel plate.
Using the DSP/BIOS and network development external member NDK of TI companies as gigabit Ethernet communication transfer operating system, NDK
Pass through DLL and local embedded OS and bottom hardware isolation of system；Based on DSP/BIOS and NDK, complete
Communicated with gigabit Ethernet and realize that strip width high speed information transmits；Detailed process is：
1) NDK initialization is carried out, PRD objects is established, establishes HOOK objects；
2) it is configured in CCS, adds NDK headers and libraries files, order of connection when NDK compilings are set；
3) renewal project CMD files；
4) software development is carried out data transmission, the data transmission program based on UDP is：Establish file symbol table；Establish UDP
Socket, information to be sent is subjected to UDP message encapsulation, transfers to carry out IP packet encapsulations inside protocol stack, then pass
It is delivered to bottom and is packaged into Ethernet data bag and is sent in network；
5) data communication is completed.
Compared with prior art, the beneficial effects of the invention are as follows：
1) realize that steel plate width accurately detects online, accuracy of detection reaches 0.5mm；It is wide to avoid traditional contact band steel
The shortcomings of spending numerous and jumbled measuring method limited precision, detection device, poor anti jamming capability；
2) multifunction module is integrated on same embedded processing chip DSP, integrated level improves, the plate being substantially reduced
The size of card；
3) passage of the gigabit ethernet interface as high speed data transfer is used, improves the data transmission capabilities and speed of system
Degree；Directly picture signal is passed in Embedded Image Processing System by gigabit Ethernet, is different from and existing passes through image
The method that image information is passed to image processing system by capture card, greatly reduce the complexity of system；
4) few equipments and devices are used, ensure that strip width measurement can be carried out in real time, exactly using bus mode,
Save substantial amounts of system resource；And there is the advantages of simple in construction, easy to maintenance.
Brief description of the drawings
Fig. 1 is the structural representation of embedded strip width detecting and controlling system of the present invention.
Fig. 2 is the principle schematic of the present invention that image procossing is carried out using Edge Search algorithm.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
Strip width detection method based on embedded processing systems and gigabit Ethernet, comprises the following steps：
1) the embedded strip width detecting and controlling system using digital signal processor DSP as core devices is used, passes through DSP
Control the image information of high speed linear array CCD camera collection steel plate；
2) as shown in figure 1, embedded strip width detecting and controlling system is communicated by DSP, power module, gigabit Ethernet
Module, clock module, data memory module and extended debugging module composition；Power module is used to provide burning voltage for system,
Clock module is used to provide precision interval clock for high-speed digital video camera；Extended debugging module is used for installation and the tune of online equipment
Examination；
3) strip image is analyzed and handled with Edge Search algorithm by DSP, obtained strip width information, pass through
Gigabit Ethernet to host computer, the strip width information transfer handled well is provided to support for production.
Examined as shown in Fig. 2 the difference in gray scale be present using the image of steel plate both sides of edges using Edge Search algorithm
Survey；Rim detection specifically is carried out to steel plate using shade of gray threshold search algorithm, its step is：
1) suspicious points are searched for；The edge of vertical direction is detected by way of row scans, if (x, y) is a certain picture in image
Vegetarian refreshments coordinate, f (x, y) is the gray value, if meet f (x, y)-f (x-1, y) ＞ σ, and 0 ＜ x ＜ X, 0 ＜ y ＜ Y,
So (x, y) is suspicious points；σ is the reference value of setting in above formula, and X represents steel plate lateral coordinates, and Y represents the vertical of steel plate
To coordinate；
2) the most region of suspicious points is found；Set x regions as：(x1, x2), 0≤x1 ＜ x2 ＜ X；Y regions are：
(y1, y2), 0≤y1 ＜ y2 ＜ Y；If suspicious points are distributed most in (x1, x2) and (y1, y2), then (x1, x2)
Or (y1, y2) is exactly section where steel plate edge；For identical ordinate y 2 points (x1, y1), (x2, y1) will
Abscissa subtracts each other to obtain Δ x, and Δ x is the width information of steel plate.
Using the DSP/BIOS and network development external member NDK of TI companies as gigabit Ethernet communication transfer operating system, NDK
Pass through DLL and local embedded OS and bottom hardware isolation of system；Based on DSP/BIOS and NDK, complete
Communicated with gigabit Ethernet and realize that strip width high speed information transmits；Detailed process is：
1) NDK initialization is carried out, PRD objects is established, establishes HOOK objects；
2) it is configured in CCS, adds NDK headers and libraries files, order of connection when NDK compilings are set；
3) renewal project CMD files；
4) software development is carried out data transmission, the data transmission program based on UDP is：Establish file symbol table；Establish UDP
Socket, information to be sent is subjected to UDP message encapsulation, transfers to carry out IP packet encapsulations inside protocol stack, then pass
It is delivered to bottom and is packaged into Ethernet data bag and is sent in network；
5) data communication is completed.
The present invention operation principle be：Strip image information is gathered by high speed linear array CCD camera, by digital signal processor
DSP is handled collecting width information, is obtained the width information of strip and is transmitted to host computer in real time by gigabit Ethernet,
Realize the on-line checking to strip width information.
The present invention technical characterstic be：The image information of high speed linear array CCD camera collection steel plate is controlled by DSP, through DSP
The searching algorithm analysis of strip image border is carried out with obtaining strip width information after processing, finally passes strip width information in real time
It is defeated by host computer.DSP integrates each functional module, greatly reduces the redundancy journey of system as system control core device
Degree, it is easy to be managed collectively each functional module.The image letter that embedded processing systems are sent to high speed linear array CCD camera
Breath is handled, including search image procossing in image border is carried out on DSP, to obtain strip width information.
The present invention uses gigabit Ethernet as data communication interface, and its technical characterstic is high reliability and high availability, can be with
Online to change (plug), the data transmission capabilities of high speed more can be suitably used for the industrial environment of complexity.
The present invention uses Embedded Image Processing System to be made up of digital signal processor DSP for main devices.Based on embedding
It is different from the image procossing based on PC to enter the image processing system of formula, have it is with strong points, low in energy consumption, stability is good,
The features such as disposal ability is strong.DSP is carried out parallel as special digital signal processor to the steel plate image information collected
Real-time operation is handled, and solving PC progress image procossings needs to carry out a series of mistakes such as preservation, compression ＆ decompression of image
Not available for the signal delay that journey is brought the problem of detection in real time.
Data communication mode is by the way of gigabit Ethernet, design DSP and the height of network controller control strip width information
Speed transmission, the strip width detection method based on embedded system need embedded OS；It is public present invention employs TI
The DSP/BIOS and network development external member NDK of department.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, appoint
What those familiar with the art the invention discloses technical scope in, technique according to the invention scheme and its hair
Bright design is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (3)
1. the strip width detection method based on embedded processing systems and gigabit Ethernet, it is characterised in that including as follows
Step：
1) the embedded strip width detecting and controlling system using digital signal processor DSP as core devices is used, passes through DSP
Control the image information of high speed linear array CCD camera collection steel plate；
2) embedded strip width detecting and controlling system is by DSP, power module, gigabit Ethernet communication module, clock mould
Block, data memory module and extended debugging module composition；Power module is used to provide burning voltage for system, and clock module is used
In providing precision interval clock for high-speed digital video camera；Extended debugging module is used for the installation and debugging of online equipment；
3) strip image is analyzed and handled with Edge Search algorithm by DSP, obtained strip width information, pass through
Gigabit Ethernet to host computer, the strip width information transfer handled well is provided to support for production.
2. the strip width detection method according to claim 1 based on embedded processing systems and gigabit Ethernet,
Detected characterized in that, the difference in gray scale be present using the image of steel plate both sides of edges using Edge Search algorithm；Tool
Body is to carry out rim detection to steel plate using shade of gray threshold search algorithm, and its step is：
1) suspicious points are searched for；The edge of vertical direction is detected by way of row scans, if (x, y) is a certain picture in image
Vegetarian refreshments coordinate, f (x, y) is the gray value, if meet f (x, y)-f (x-1, y) ＞ σ, and 0 ＜ x ＜ X, 0 ＜ y ＜ Y,
So (x, y) is suspicious points；σ is the reference value of setting in above formula, and X represents steel plate lateral coordinates, and Y represents the vertical of steel plate
To coordinate；
2) the most region of suspicious points is found；Set x regions as：(x1, x2), 0≤x1 ＜ x2 ＜ X；Y regions are：
(y1, y2), 0≤y1 ＜ y2 ＜ Y；If suspicious points are distributed most in (x1, x2) and (y1, y2), then (x1, x2)
Or (y1, y2) is exactly section where steel plate edge；For identical ordinate y 2 points (x1, y1), (x2, y1) will
Abscissa subtracts each other to obtain Δ x, and Δ x is the width information of steel plate.
3. the strip width detection method according to claim 1 based on embedded processing systems and gigabit Ethernet,
Characterized in that, operated using the DSP/BIOS and network development external member NDK of TI companies as gigabit Ethernet communication transfer
System, NDK pass through DLL and local embedded OS and bottom hardware isolation of system；Based on DSP/BIOS with
NDK, complete to communicate and realize that strip width high speed information transmits with gigabit Ethernet；Detailed process is：
1) NDK initialization is carried out, PRD objects is established, establishes HOOK objects；
2) it is configured in CCS, adds NDK headers and libraries files, order of connection when NDK compilings are set；
3) renewal project CMD files；
4) software development is carried out data transmission, the data transmission program based on UDP is：Establish file symbol table；Establish UDP
Socket, information to be sent is subjected to UDP message encapsulation, transfers to carry out IP packet encapsulations inside protocol stack, then pass
It is delivered to bottom and is packaged into Ethernet data bag and is sent in network；
5) data communication is completed.
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| CN201610312961.5A CN107367232A (en) | 2016-05-12 | 2016-05-12 | Strip width detection method based on embedded processing systems and gigabit Ethernet |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001035050A1 (en) * | 1999-11-08 | 2001-05-17 | Sumitomo Metal Industries Limited | Method for measuring quality of bandlike body, method for suppressing camber, instrument for measuring quality of bandlike body, rolling machine, and trimming device |
| CN201166545Y (en) * | 2007-12-19 | 2008-12-17 | 攀枝花新钢钒股份有限公司 | Galvanizing line band steel width on-line detection device |
| CN103357672A (en) * | 2012-03-30 | 2013-10-23 | 鞍钢股份有限公司 | Online strip steel boundary detection method |
| CN103472065A (en) * | 2013-09-06 | 2013-12-25 | 鞍钢股份有限公司 | Steel plate surface image collection and data transmission method |
| CN104980323A (en) * | 2014-04-10 | 2015-10-14 | 鞍钢股份有限公司 | Ethernet strip steel surface image data processing platform based on DSP |
| CN105414206A (en) * | 2014-09-19 | 2016-03-23 | 鞍钢股份有限公司 | On-line rapid positioning method for cold-rolling strip steel edge |
-
2016
- 2016-05-12 CN CN201610312961.5A patent/CN107367232A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001035050A1 (en) * | 1999-11-08 | 2001-05-17 | Sumitomo Metal Industries Limited | Method for measuring quality of bandlike body, method for suppressing camber, instrument for measuring quality of bandlike body, rolling machine, and trimming device |
| CN201166545Y (en) * | 2007-12-19 | 2008-12-17 | 攀枝花新钢钒股份有限公司 | Galvanizing line band steel width on-line detection device |
| CN103357672A (en) * | 2012-03-30 | 2013-10-23 | 鞍钢股份有限公司 | Online strip steel boundary detection method |
| CN103472065A (en) * | 2013-09-06 | 2013-12-25 | 鞍钢股份有限公司 | Steel plate surface image collection and data transmission method |
| CN104980323A (en) * | 2014-04-10 | 2015-10-14 | 鞍钢股份有限公司 | Ethernet strip steel surface image data processing platform based on DSP |
| CN105414206A (en) * | 2014-09-19 | 2016-03-23 | 鞍钢股份有限公司 | On-line rapid positioning method for cold-rolling strip steel edge |
Non-Patent Citations (1)
| Title |
|---|
| 韦金辰: "《零点起步TMS320C6000系列DSP原理与应用系统设计》", 30 April 2012 * |
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Application publication date: 20171121 |