CN103084411B - A kind of method and system realizing intermediate blank shearing property end to end - Google Patents
A kind of method and system realizing intermediate blank shearing property end to end Download PDFInfo
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Abstract
The invention provides a kind of method and system realizing intermediate blank shearing property end to end, wherein method comprises: image collecting device adopts the image sequence of planar array type camera acquisition band steel; Shape analysis device to image acquisition device to image sequence analyze, to analysis for band steel toe tail image carries out Image semantic classification, identify strip shape classification by carrying out detections to pretreated image, and calculate and be with steel cutting line position; Shear the position that actuating unit controls according to the band steel cutting line position that shape analysis device calculates to shear head or the afterbody of band steel.The present invention controls to capture action without the need to extra device, therefore simplifies operation; And the present invention can perform fixed length, determine the percentage when multiple shearing strategy of optimization, therefore there is the advantage that shear precision is high, shearing can not be skidded and maintenance is little.
Description
Technical field
The present invention relates to the intermediate blank shearing property technology end to end of rolling process, particularly relate to realize intermediate blank end to end optimizing shear control method and system.
Background technology
In equipment of Hot Strip Mill, the steel billet between roughing mill and finishing mill is referred to as intermediate blank.Erose intermediate blank head, afterbody have to pass through the shearing of flying shear, be rolled into long band steel and occur partly rolling waste product in follow-up coiling process to prevent intermediate blank.
If the head-tail of intermediate blank is sheared very few, then in the operation of rolling, unnecessary head-tail can cause whole piece band steel to produce steel-fastening and form roll marks at roller surface, or leaves over a part of afterbody in milling train, thus causes the steel-fastening phenomenon of next steel.If it is too much that the head-tail of band steel is sheared, then bring the waste of great number can to steel rolling user.
There is provided optimal pruning length to the head-tail of each intermediate blank, and carry out the best process sheared, be called " optimizing shear ".Nowadays advanced cutting system optimization has been regarded as the investment that each equipment of Hot Strip Mill has highest return.
This optimizing shear scheme comprises contourgraph, Shape Analyzer, belt speed tracking means and shears actuating unit, the head of band steel intermediate blank or the image information of afterbody is got by contourgraph collection, Shape Analyzer carries out Image semantic classification, shape recognition and optimum shear line to the image information that contourgraph obtains and calculates, and obtains the clipped position of intermediate blank; Shear the translational speed of intermediate blank on roller-way that actuating unit captures with reference to belt speed tracking means, control flying shear and intermediate blank is breaking at its clipped position place, remove head and/or the afterbody of intermediate blank.
Existing optimizing shear scheme utilizes width gage or linear array shooting to obtain the Head and Tail Shape information of band steel intermediate blank as contourgraph.If use width gage, need continuous measurement width, require that track band steel moves simultaneously, obtain a series of strip width information along strip length direction, as shown in Figure 1.This method cannot reflect real band steel image, particularly None-identified shape as this in fish tail (intermediate blank afterbody as shown in Figure 1).Therefore, more complicated shearing strategy cannot be performed, the shearing manipulation often made the mistake, the clipped position of a kind of mistake as shown in Figure 2.
Form contourgraph based on line array video camera and scan a line at every turn, follow the tracks of strip speed (abbreviation belt speed) simultaneously, then splice entire image.If belt speed is followed the tracks of problem, then image mosaic also there will be problem, and particularly mistake appears in longitudinal image scaled, larger on the impact of final result of calculation.
Existing employing face battle array imaging device gathers the system of image, needs other servicing unit to detect the arrival of intermediate blank and to leave, to control imaging device capturing intermediate blank head or afterbody image.These system and methods also exist the problems such as the huge and system call interception of investment is difficult, and are difficult to evade imaging area defect intuitively and are difficult to obtain optimized image; Further, be subject to intermediate blank rate, cause candid photograph too early or excessively late, thus affect the accurate control that intermediate blank shears end to end.
As can be seen here, existingly utilize width gage or linear array shooting to be optimized all each have their own problem of shearing scheme as contourgraph, if dealt with improperly, that intermediate blank can be caused to shear end to end is very few or too much, thus causes steel-fastening phenomenon or huge waste.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method and system realizing intermediate blank shearing property end to end, the accurate control can sheared end to end according to the Head and Tail Shape information realization intermediate blank directly obtained.
In order to solve the problems of the technologies described above, the invention provides a kind of method realizing intermediate blank shearing property end to end, comprising:
Image collecting device adopts the image sequence of planar array type camera acquisition band steel;
Shape analysis device to image acquisition device to image sequence analyze, to analysis for band steel toe tail image carries out Image semantic classification, identify strip shape classification by carrying out detections to pretreated image, and calculate and be with steel cutting line position;
Shear the position that actuating unit controls according to the band steel cutting line position that shape analysis device calculates to shear head or the afterbody of band steel.
Preferably, the method also comprises:
Human-computer interaction device obtains training data by pattern drill, and/or configuration comprises fixed length, any one shearing strategy determined in percentage and optimizing shear, is supplied to shape analysis device.
Preferably, shape analysis device is the Image semantic classification that band steel toe tail image carries out to analyzing, and comprises one or more in gray scale stretching, medium filtering and binary conversion treatment.
Preferably, shape analysis device identifies strip shape classification by carrying out detection to pretreated image, and calculates band steel cutting line position, specifically comprises:
Boundary chain code is obtained by carrying out rim detection to pretreated image, and according to training data, Neural Fuzzy RM identification strip shape classification is passed through to the boundary chain code obtained, or a virtual scan line is set on pretreated picture traverse direction, internally move along this picture appearance, and by the number of times that passes through and position, analysis is carried out to virtual scan line identify described strip shape classification, comprise wide head, narrow head, fish tail, one or more independent shape or combined shaped in torticollis and dog bone, described band steel cutting line position is calculated with the described strip shape classification identified according to shearing strategy.
Preferably, the method also comprises:
Belt speed tracking means measures band steel band speed;
The moment that the band steel band speed control system that shearing actuating unit also measures according to belt speed tracking means is sheared the head of band steel or afterbody.
Preferably, before the image sequence of image acquisition device band steel, also comprise:
Set picture position by human-computer interaction device, start image collecting device gathers band steel image sequence according to the picture position of setting, and dynamically show the image sequence of the band steel of image acquisition device.
In order to solve the problems of the technologies described above, the invention provides a kind of system realizing intermediate blank shearing property end to end, comprise the image collecting device, the shape analysis device that connect successively and shearing actuating unit, wherein:
Image collecting device, for adopting the image sequence of planar array type camera acquisition band steel, and exports to shape analysis device;
Shape analysis device, for carrying out Image semantic classification to the image sequence analysis of input for being with steel toe tail image, identifying strip shape classification by carrying out detection to pretreated image, and the band steel cutting line position calculated being exported to shearing actuating unit;
Shear actuating unit, for the position of shearing the head of band steel or afterbody according to the band steel cutting line position of input.
Preferably, this system also comprises the human-computer interaction device be connected with shape analysis device, wherein:
Human-computer interaction device, for the training data will obtained by pattern drill, and/or by configuration comprise fixed length, determine in percentage and optimizing shear any one shear tactful, export to shape analysis device;
Shape analysis device is to being judged as that band steel toe tail image comprises one or more Image semantic classification in gray scale stretching, medium filtering and binary conversion treatment, boundary chain code is obtained by carrying out rim detection to pretreated image, and according to training data, Neural Fuzzy identification is carried out to the boundary chain code obtained, identify the strip shape classification comprising one or more independent shapes in wide head, narrow head, fish tail, torticollis and dog bone or combined shaped, calculate according to shearing strategy and described strip shape classification and be with steel cutting line position; Or a virtual scan line is set on pretreated picture traverse direction, internally moves along this picture appearance, and by the number of times that passes through and position, analysis is carried out to virtual scan line identify strip shape classification.
Preferably, this system also comprises the belt speed tracking means be connected with shearing actuating unit, wherein:
Belt speed tracking means, for measuring band steel band speed, and exports to shearing actuating unit;
Shear actuating unit also according to the moment that the band steel band speed control system of input is sheared the head of band steel or afterbody.
Preferably, human-computer interaction device is also connected with described image collecting device, setting picture position, starts image collecting device carries out being with the image sequence of steel collection according to the picture position of setting, and the image sequence that the collection of dynamic display image harvester exports.
Method and system of the present invention gather band steel image owing to adopting planar array type video camera, therefore directly can obtain the Head and Tail Shape information of band steel, and without the need to testing the speed simultaneously, reduce the dependence to strip speed sensitivity thus, make applicability more extensive; By graphical analysis of the present invention, image information only need be utilized to arrive by Intelligent Recognition band steel toe tail, and control to capture action without the need to extra device (as heat inspection), thus simplify operation; Owing to taking to capture mode continuously, the defect of imaging area can be evaded and obtain desirable image.In addition, system of the present invention can obtain the various band steel toe tail shape information comprising wide head, narrow head, fish tail, torticollis and dog bone, and carry out record easily, therefore can perform accordingly and comprise fixed length, determine the multiple shearing such as percentage and optimization strategy, therefore have shear precision high, shear and can not skid and the advantage such as maintenance is little, make to shear and perform more accurate, solve the difficult problem of intermediate blank end to end in shearing property technology.
Accompanying drawing explanation
Fig. 1 is the existing system architecture schematic diagram realizing intermediate blank shearing property end to end;
Fig. 2 is schematic diagram strip steel head or afterbody being surveyed merely to the wide clipped position made the mistake;
Fig. 3 is the flow chart realizing the intermediate blank method and system embodiment of shearing property end to end of the present invention;
Fig. 4 is various typical strip steel head or tail shape schematic diagram;
Fig. 5 is the structured flowchart realizing the intermediate blank system embodiment of shearing property end to end of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and preferred embodiment, technical scheme of the present invention is set forth in detail.The embodiment below exemplified only for instruction and explanation of the present invention, and does not form the restriction to technical solution of the present invention.
As shown in Figure 3, be the flow process realizing the intermediate blank embodiment of the method for shearing property end to end provided by the invention, comprise the steps:
Image collecting device adopts the image sequence of planar array type camera acquisition band steel;
Shape analysis device to image acquisition device to image sequence analyze, to analysis for band steel toe tail image carries out Image semantic classification, identify strip shape classification by carrying out detection to pretreated image, then calculate band steel cutting line position according to strip shape classification;
Shear the position that actuating unit controls according to the band steel cutting line position that shape analysis device calculates to shear head or the afterbody of band steel.
Image collecting device of the present invention, owing to adopting the image sequence of planar array type camera acquisition band steel, therefore once can get band steel end view picture accurately.
Said method embodiment also comprises:
Set picture position by human-computer interaction device, start image collecting device gathers band steel image sequence according to the picture position of setting, and dynamically show the image sequence of the band steel of image acquisition device.The object of setting picture position is to evade image defects district (as roller-way is reflective).
Said method embodiment also comprises:
Human-computer interaction device obtains training data by pattern drill, and/or configuration comprises fixed length, any one shearing strategy determined in percentage and optimizing shear, is supplied to shape analysis device;
Shape analysis device is to the Image semantic classification being judged as being with steel toe tail image to carry out, comprise that gray scale stretches, one or more in medium filtering and binary conversion treatment, by fuzzy recognition method, strip shape classification is identified to pretreated image, comprise one or more combined shaped classifications in wide head, narrow head, fish tail, torticollis and dog bone, as shown in Figure 4; Also according to shearing policy calculation band steel cutting line position.
Fuzzy recognition method above-mentioned, such as obtain boundary chain code by carrying out rim detection to pretreated image, and according to training data, by Neural Fuzzy RM, strip shape classification is identified to the boundary chain code obtained.Or, pretreated picture traverse direction arranges a virtual scan line, internally moves along picture appearance, and by the number of times that passes through and position, analysis is carried out to scan line identify strip shape classification.
In said method embodiment, shear band steel band speed control system that actuating unit also measures according to belt speed tracking means carries out shear action moment to the head of band steel or afterbody.
The present invention is directed to said method embodiment and correspondingly additionally provide the system embodiment realizing intermediate blank shearing property end to end, its structure as shown in Figure 5, comprise the image collecting device 510, shape analysis device 520 and the shearing actuating unit 530 that connect successively, wherein:
Image collecting device 510, for adopting the image sequence of planar array type camera acquisition band steel, and exports to shape analysis device 520;
Shape analysis device 520, for carrying out Image semantic classification to the image sequence analysis of input for being with steel toe tail image, by carrying out rim detection identification strip shape classification to pretreated image, and the band steel cutting line position calculated is exported to shearing actuating unit 530;
Shear actuating unit 530, for the position of shearing the head of band steel or afterbody according to the band steel cutting line position of input.
In said system embodiment, also comprise the human-computer interaction device 550 be connected with shape analysis device 520, wherein:
Human-computer interaction device 550, for the training data will obtained by pattern drill, and/or by configuration comprise fixed length, determine in percentage and optimizing shear any one shear tactful, export to shape analysis device 520;
Shape analysis device 520 is to being judged as that band steel toe tail image comprises one or more Image semantic classification in gray scale stretching, medium filtering and binary conversion treatment, by carrying out fuzzy diagnosis to pretreated image, identify strip shape classification, comprise one or more independent shape classification or the combined shaped classifications in wide head, narrow head, fish tail, torticollis and dog bone, as shown in Figure 4; Band steel cutting line position is calculated according to shearing strategy and strip shape classification.
In the above-described embodiments, shape analysis device 520 adopts rim detection to obtain boundary chain code to pretreated image, and according to training data, the boundary chain code obtained is carried out to neural network recognization mode and identifies strip shape classification, or a virtual scan line is set on pretreated picture traverse direction, internally move along picture appearance, and by the number of times that passes through and position, analysis is carried out to scan line identify strip shape classification.
In said system embodiment, also comprise the belt speed tracking means 540 be connected with shearing actuating unit 530, wherein:
Belt speed tracking means 540, for measuring band steel band speed, and exports to shearing actuating unit 530;
Shear actuating unit 530 also according to the moment that the band steel band speed control system of input is sheared the head of band steel or afterbody.
In said system embodiment, human-computer interaction device 550 is also connected with image collecting device 510, setting picture position, start described image collecting device 510 gathers described band steel image sequence according to the picture position of setting, and the image sequence dynamically showing the described band steel that described image collecting device 510 gathers starts the collection of image collecting device.
Claims (10)
1. realize a method for intermediate blank shearing property end to end, comprising:
Image collecting device adopts planar array type video camera to gather the image sequence of band steel by continuous candid photograph mode;
Shape analysis device to image acquisition device to image sequence analyze, carry out Image semantic classification to after the graphical analysis of band steel toe tail, identify strip shape classification by carrying out detections to pretreated image, and calculate and be with steel cutting line position;
Shear the position that actuating unit controls according to the band steel cutting line position that shape analysis device calculates to shear head or the afterbody of band steel.
2., according to the method realizing intermediate blank shearing property end to end according to claim 1, it is characterized in that, also comprise:
Human-computer interaction device obtains training data by pattern drill, and/or configuration comprises fixed length, any one shearing strategy determined in percentage and optimizing shear, is supplied to described shape analysis device.
3. according to the method realizing intermediate blank shearing property end to end according to claim 1, it is characterized in that, shape analysis device is the Image semantic classification that band steel toe tail image carries out to analyzing, and comprises one or more in gray scale stretching, medium filtering and binary conversion treatment.
4. according to the method realizing intermediate blank shearing property end to end according to claim 2, it is characterized in that, shape analysis device identifies strip shape classification by carrying out detection to pretreated image, and calculates band steel cutting line position, specifically comprises:
Boundary chain code is obtained by carrying out rim detection to pretreated image, and according to described training data, strip shape classification described in the identification of Neural Fuzzy RM is passed through to the boundary chain code obtained, or on described pretreated picture traverse direction, a virtual scan line is set, internally move along this picture appearance, and by the number of times that passes through and position, analysis is carried out to described virtual scan line identify described strip shape classification, comprise wide head, narrow head, fish tail, one or more independent shape or combined shaped in torticollis and dog bone, described band steel cutting line position is calculated with the described strip shape classification identified according to described strategy of shearing.
5., according to the method realizing intermediate blank shearing property end to end according to claim 1, it is characterized in that, also comprise:
Belt speed tracking means measures band steel band speed;
The moment that the described band steel band speed control system that shearing actuating unit also measures according to belt speed tracking means is sheared the head of band steel or afterbody.
6., according to the method realizing intermediate blank shearing property end to end according to claim 2, it is characterized in that, before the image sequence with steel described in described image acquisition device, also comprise:
By described human-computer interaction device setting picture position, start described image collecting device gathers described band steel image sequence according to the picture position of setting, and dynamically show the image sequence of the described band steel of described image acquisition device.
7. realize a system for intermediate blank shearing property end to end, comprise the image collecting device, the shape analysis device that connect successively and shear actuating unit, wherein:
Image collecting device, for adopting planar array type video camera to gather the image sequence of band steel by the mode of capturing continuously, and exports to shape analysis device;
Shape analysis device, for carrying out Image semantic classification to the image sequence analysis of input for being with steel toe tail image, identifying strip shape classification by carrying out detection to pretreated image, and the band steel cutting line position calculated being exported to shearing actuating unit;
Shear actuating unit, for the position of shearing the head of band steel or afterbody according to the described band steel cutting line position of input.
8., according to the system realizing intermediate blank shearing property end to end according to claim 7, it is characterized in that, also comprise the human-computer interaction device be connected with shape analysis device, wherein:
Human-computer interaction device, for the training data will obtained by pattern drill, and/or by configuration comprise fixed length, determine in percentage and optimizing shear any one shear tactful, export to described shape analysis device;
Described shape analysis device is to being judged as that band steel toe tail image comprises gray scale and stretches, one or more Image semantic classification in medium filtering and binary conversion treatment, boundary chain code is obtained by carrying out rim detection to pretreated image, and according to described training data, Neural Fuzzy identification is carried out to the boundary chain code obtained, identify and comprise wide head, narrow head, fish tail, one or more independent shapes in torticollis and dog bone or the strip shape classification of combined shaped, described band steel cutting line position is calculated according to described shearing strategy and described strip shape classification, or a virtual scan line is set on described pretreated picture traverse direction, internally moves along this picture appearance, and by the number of times that passes through and position, analysis is carried out to described virtual scan line identify described strip shape classification.
9., according to the system realizing intermediate blank shearing property end to end according to claim 7, it is characterized in that, also comprise the belt speed tracking means be connected with described shearing actuating unit, wherein:
Belt speed tracking means, for measuring band steel band speed, and exports to described shearing actuating unit;
Described shearing actuating unit is also according to the moment that the described band steel band speed control system of input is sheared the head of described band steel or afterbody.
10., according to the system realizing intermediate blank shearing property end to end according to claim 8, it is characterized in that,
Described human-computer interaction device is also connected with described image collecting device, setting picture position, start described image collecting device carries out the image sequence of described band steel collection according to the picture position of setting, and the image sequence that image acquisition device described in Dynamic Announce exports.
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