CN109596049A - A kind of hot steel plate end Shearing Optimization method after rolling - Google Patents
A kind of hot steel plate end Shearing Optimization method after rolling Download PDFInfo
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- CN109596049A CN109596049A CN201811619991.6A CN201811619991A CN109596049A CN 109596049 A CN109596049 A CN 109596049A CN 201811619991 A CN201811619991 A CN 201811619991A CN 109596049 A CN109596049 A CN 109596049A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 119
- 239000010959 steel Substances 0.000 title claims abstract description 119
- 238000005096 rolling process Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000010008 shearing Methods 0.000 title claims abstract description 17
- 238000005457 optimization Methods 0.000 title claims description 14
- 230000001788 irregular Effects 0.000 claims abstract description 26
- 238000005520 cutting process Methods 0.000 claims abstract description 19
- 238000004364 calculation method Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims description 10
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- 230000009466 transformation Effects 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
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- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
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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
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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
- G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
- G01B11/043—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
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Abstract
本发明涉及一种轧制后热态钢板端部剪切优化方法，所述方法采用高清面阵相机，使用光栅信号触发拍摄钢板头部及尾部图片，运用图片处理算法进行边缘提取。通过对运动中的钢板两端部形状不规则区域的长度的测量，依据边缘点、宽度中心线、带钢本体和扫描线宽度最终确定端部不规则形状及优化剪切位置。本发明测量系统硬件配置简单，计算方法高效精确，能够快速准确的计算出切头、切尾的最优长度。The invention relates to a method for optimizing the end shearing of a hot steel plate after rolling. The method adopts a high-definition area array camera, uses a grating signal to trigger and captures pictures of the head and tail of the steel plate, and uses a picture processing algorithm to extract edges. By measuring the length of the irregular shape area at both ends of the moving steel plate, the irregular shape of the end part and the optimized shearing position are finally determined according to the edge point, the width center line, the strip body and the width of the scanning line. The measuring system of the invention has simple hardware configuration, efficient and accurate calculation method, and can quickly and accurately calculate the optimal lengths of the cutting head and the cutting tail.
Description
Technical field
The present invention relates to metallurgical automation production and detection fields, and in particular to hot steel plate end shearing after a kind of rolling
Optimization method.
Background technique
In the Plate Production technique of steel industry, after hot rolled strip steel rolling, steel plate is generated due to roll pressure
Unevenly, the head, tail portion of steel plate will appear fishtail, ligulate, super-wide shape, other asymmetric shape defects such as shape or lateral bending,
The steel plate end of these irregular shapes seriously affects final product quality.To solve the above problems, having to the strip after rolling
Head, tail portion carry out shear treatment.
In the prior art, shear line is the important procedure that production meets dimensions steel plate, due to the complexity of its technique
It is limited with capacity of equipment, the production capacity of shear line usually becomes the bottleneck that whole steel plate production line production capacity is promoted.Steel plate shearing
There is cutting head to cut on line, three key equipments such as bilateral scissors and fixed size scissors, cutting head, which is cut, is cut to crosscutting equipment with scale, bilateral to be cut to indulge
Cut equipment.Wherein, cutting head cut be responsible for excision rolling wrench, tail irregular shape and rolled plate be segmented slightly cut.Mesh
It is all to be sheared with the shear line set in advance to band steel toe, tail that the cutting head of preceding most domestic production line, which is cut, shear line
Too long to be easy to cause the wasting of resources, shear line is too short and product quality requirement is not achieved.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of hot steel plate end Shearing Optimization method after rolling.
This method may be implemented to carry out real-time measurement to the steel plate end Different Rule shape area length in movement, accurately calculates and cuts
The cutting line position of head, back-end crop；
Hot steel plate end Shearing Optimization method after a kind of rolling provided by the invention, the system packet measured using this method
Include: 2 grating sensors, 1 high definition area array cameras, 1 set of high intense light source and control system, high definition camera side dispose two light
Gate sensor, camera shoot the whole region between field range 2 grating sensors of covering, high intense light source covering camera shooting
Field range；
This method step include: step 1 to steel plate head irregular area along rolling direction maximum length it is online precisely
Measurement；Step 2 accurately measuring online along rolling direction maximum length to steel plate tail irregular area:
Step 1 accurately measures steel plate head irregular area along rolling direction maximum length, comprising:
Step 1.1: installation measuring system guarantees that high definition area array cameras shooting field range covers No. 1, No. 2 grating sensings
Region between device, high intense light source covering camera shoot field range；It is installed the rear inside and outside ginseng of calibration for cameras shooting area
Number；
Step 1.2: after calibration for cameras, control system calculates the actual range σ of single pixel, foundation according to calibration numerical value
Picture measured zone (ROI) is shot in calibrated camera shooting area parameter setting control system, which includes tested steel
Plate whole end features；
Step 1.3: being travelled forward after steel plate completes cooling with speed v, after triggering No. 1 grating sensor, make No. 1 grating
Sensor becomes 1 signal from 0 signal, and high definition area array cameras is opened, into state to be clapped, when steel plate triggers No. 2 grating sensors
Afterwards, high definition area array cameras shoots picture, passback shooting picture to control system；
Step 1.4: control system carries out distortion correction to shooting picture, extracts the characteristic area wheel of shooting picture light plate
Exterior feature, the i.e. outer shape of steel plate generate scan line close to steel plate tail side in the ROI region of shooting picture, perpendicular to water
Horizontal line starts scan by column for the first time to shooting picture, and sweep spacing is a pixel, and scanning pertains only to ROI for the first time
Caudal one third region is leaned in region；
Step 1.5: each column, i.e. m column, scan line and steel plate characteristic area profile can generate two intersection points, control system
The pixel coordinate of record intersection point calculates the midpoint (R of two intersection pointsm,Cm) and record；
Step 1.6: after scanned for the first time, the midpoint coordinates being calculated being fitted to straight line, straight line is opposite
In the angle that horizontal inclination angle theta is steel plate length direction center line and roller-way center line thus, i.e. steel plate and horizontal direction
Inclination angle；
Step 1.7: affine transformation being carried out to shooting picture using inclination angle theta, picture after being corrected makes steel plate length center
Line direction is vertical with the direction of scan line, i.e. steel plate length centerline direction and horizontal direction parallel；
Step 1.8: the steel plate characteristic area profile in picture after amendment being scanned by column for the second time, sweep spacing is
One pixel, m=0, second of scanning area are related to entire ROI region at this time, and scan line intersects with steel plate characteristic area profile,
Count the pixel coordinate (R of intersection point number and record intersection pointmk,Cmk)；
Step 1.9: calculating with first intersection point (R when single passm1,Cm1) and the last one intersection point (Rmk,Cmk) between
Distance DkAnd it records；
Step 1.10: as intersection point number k > 2 or DkWhen significant change occurs, that is, determine after the position part for head not
Regular domain, the position are head cutting line position, the m of scan line traveling at this time1A pixel distance calculates what scan line was advanced
Actual range S1, calculation formula S1=m1*σ；
Step 1.11: when intersection point number becomes 0, that is, determining the position for steel plate most head position；Scan line row at this time
Into m2A pixel distance calculates the actual range S that scan line is advanced2, calculation formula S2=m2*σ；
Step 1.12: the length of steel plate head irregular area is Shead=S2-S1, that is, determine that head cutting line position is
Apart from steel plate most head part Shead；
Step 2 accurately measures steel plate tail irregular area along rolling direction maximum length, comprising:
Step 2.1: leaving No. 1 grating sensor when travelling forward after steel plate completion is cooling with certain speed, make No. 1 grating
Sensor becomes 0 signal from 1 signal, and high definition area array cameras shoots picture, passback shooting picture to control system；
Step 2.2: control system carries out distortion correction to shooting picture, carries out affine change to shooting picture using inclination angle theta
It changes, keeps the direction of scan line vertical with steel plate length direction, picture after being corrected；
Step 2.3: the steel plate characteristic area profile in picture after amendment being scanned, scan line is from far from cooling device
Side starts, and moves by column, each column, i.e., the n-th column, at this time n=0, and sweep spacing is a pixel, and scanning is related to the entire area ROI
Domain, scan line intersect with steel plate characteristic area profile, the pixel coordinate (R of statistics intersection point number and record intersection pointnk,Cnk)；
Step 2.4: calculating with first intersection point (R when single passn1,Cn1) and the last one intersection point (Rnk,Cnk) between
Distance D2And it records；
Step 2.5: as intersection point number k > 2 or D2When significant change occurs, that is, determine after the position part for tail portion not
Regular domain, the position are tail portion cutting line position, the n of scan line traveling at this time1A pixel distance utilizes picture single after correction
The actual range σ of element calculates the actual range S that scan line is advanced3, calculation formula S3=n1*σ；
Step 2.6: when intersection point number becomes 0, that is, determining the position for steel plate most tail position, scan line is advanced at this time
n2A pixel distance calculates the actual range S that scan line is advanced using the actual range σ of single pixel after correction4, calculation formula
For S4=n2*σ；
Step 2.7: the length of steel plate tail irregular area is Stail=S4–S3；
Step 2.8: when steel plate makes No. 2 grating sensors become 1 signal from 0 signal, closing high definition area array cameras；
Tested steel plate width answers < 4000mm；Steel plate is in roller-way movement velocity v≤3m/s after heat is rectified；The temperature of steel plate after rolling
≤ 650 DEG C of degree；
The beneficial effects of the present invention are:
The present invention realizes the on-line measurement to hot steel plate end irregular shape zone length after rolling in movement, is
Subsequent cut out of steel plate provides accurately cutting head, back-end crop length data, and then improves the product quality of steel plate, can be more accurate
Cut off, back-end crop, make for thin plate roughing subsequent processing (finish rolling) can smoothly threading, rolling, effectively prevent because
End shape problem and caused by be caught in roller-way or the damage accidents such as milling train；Shearing damage can be effectively reduced for slab
Consumption improves the rhythm of production for cutting off and cutting with fixed size scissors.
Detailed description of the invention
Fig. 1 is hot steel plate end view after rolling, wherein (a) is wave and tongued terminal part；It (b) is wave and asymmetric shape
End；It (c) is wave and semi-circular ends；It (d) is wave and fishtail end；
Fig. 2 is hot steel plate end Shearing Optimization method flow diagram after the rolling of one of specific embodiment of the invention；
Fig. 3 is specific embodiment of the invention head irregular area linear measure longimetry flow chart；
Fig. 4 is specific embodiment of the invention tail portion irregular area linear measure longimetry flow chart；
Fig. 5 is specific embodiment of the invention head irregular area length measurement diagram；
Fig. 6 is specific embodiment of the invention tail portion irregular area length measurement diagram；
Wherein, 1 is No. 1 grating sensor；2 be No. 2 grating sensors；AB line is high definition area array cameras area-of-interest
(ROI) scan line generated in；Angle of the θ between plate centre line and roller-way center line；(a) for shooting photo into
Row affine transformation process schematic；It (b) is amendment picture schematic diagram after affine transformation；(c) show for the calculating of end irregular area
It is intended to.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
Hot steel plate end Shearing Optimization measuring system is by 2 grating sensors, model C IKENN-5, L-type cunning after rolling
Slot, sectional dimension 35mm*35mm；1 high definition area array cameras, model: DALSA G3-GM-11-M2420；Resolution ratio: 2464x
2056, frame per second: 30fps；1 set of high-strength light-source system of LED, model: OPT-APA-6024, quantity: 3 and control system, I7-
5600,4k resolution ratio composition.Two grating sensors are placed in roller-way side below high definition area array cameras, and two sensors are apart
2.5 meters, grating sensor is numbered one by one from close to cooling device side, respectively No. 1, No. 2.Camera shoots visual field model
Covering 1, the region between No. 2 grating sensors are enclosed, high intense light source covering camera shooting visual field card model biography is enclosed, and sensor is protected to touch
The picture shot when hair includes enough steel plate end features.
Tested steel plate width 200mm；Steel plate is in roller-way movement velocity 0.3m/s；Steel plate reaches the temperature in shooting area after rolling
It is 400 DEG C.
The outer shape of the end irregular area of hot steel plate is as shown in Fig. 1 after rolling.Measurement include to head not
Regular domain length (Shead) and tail portion region of disorder length of field (Stail) measurement, process is as shown in Figure 2, the specific steps are as follows:
Step 1 accurately measures steel plate head irregular area along rolling direction maximum length, process as shown in figure 3,
Include:
Step 1.1: installation measuring system guarantees that high definition area array cameras shooting field range covers No. 1, No. 2 grating sensings
Region between device, high intense light source covering camera shoot field range；The inside and outside ginseng of camera shooting area demarcated after being installed
Number is as follows:
Intrinsic parameter: [0.0122531, -471.281,3.45087e-006,3.45e-006,1218.39,992.495,
2464,2056]
Outer parameter: [- 0.00610561,0.00553422,0.275833,357.708,0.348804,89.8773,0]；
Wherein, intrinsic parameter information includes: [focal length (m), distortion factor (1/m2), single pixel is wide (m), and single pixel is high (m),
Center point coordinate (pixel), image is wide (pixel), image height (pixel)]
Outer parameter information includes: [direction x rotates (deg), and the direction y rotates (deg), and the direction z rotates (deg), and the direction x is flat
It moves (m), the direction y translates (m), and the direction z translates (m), camera type]
Step 1.2: after calibration for cameras, control system according to calibration numerical value calculate the actual range σ of single pixel=
7.87*10-5M shoots picture measured zone (ROI) according in calibrated camera shooting area parameter setting control system, should
Region includes tested steel plate whole head, tail feature；
Step 1.3: being travelled forward after steel plate completes cooling with speed 0.3m/s, after triggering No. 1 grating sensor, make 1
Number grating sensor becomes 1 signal from 0 signal, and high definition area array cameras is opened, into state to be clapped, when steel plate triggers No. 2 gratings
After sensor, high definition area array cameras shoots picture, passback shooting picture to control system；
Step 1.4: control system carries out distortion correction to shooting picture, extracts the characteristic area wheel of shooting picture light plate
Exterior feature, the i.e. outer shape of steel plate generate scan line close to steel plate tail side in the ROI region of shooting picture, perpendicular to water
Horizontal line starts scan by column for the first time to shooting picture, and sweep spacing is a pixel, and scanning pertains only to ROI for the first time
Caudal one third region is leaned in region；
Step 1.5: each column, i.e. m column, scan line and steel plate characteristic area profile can generate two intersection points, control system
The pixel coordinate of record intersection point calculates the midpoint (R of two intersection pointsm,Cm) and record；
Step 1.6: after scanned for the first time, the midpoint coordinates being calculated being fitted to straight line, straight line is opposite
In the angle that horizontal inclination angle theta is steel plate length direction center line and roller-way center line thus, i.e. steel plate and horizontal direction
Inclination angle, the angle that θ is calculated is 0.77 °；
Step 1.7: affine transformation being carried out to shooting picture using inclination angle theta, as shown in figure 5, keeping steel plate long after obtaining amendment
It is vertical with the direction of scan line to spend centerline direction, i.e. steel plate length centerline direction and horizontal direction parallel；
Step 1.8: the steel plate characteristic area profile in picture after amendment being scanned by column for the second time, sweep spacing is
One pixel, m=0, second of scanning area are related to entire ROI region at this time, and scan line intersects with steel plate characteristic area profile,
Count the pixel coordinate (R of intersection point number and record intersection pointmk,Cmk)；
Step 1.9: calculating with first intersection point (R when single passm1,Cm1) and the last one intersection point (Rmk,Cmk) between
Distance DkAnd it records；
Step 1.10: as intersection point number k > 2 or DkWhen significant change occurs, that is, determine after the position part for head not
Regular domain, the position are head cutting line position, and 719 pixel distances of scan line traveling at this time calculate scan line and advance
Actual range S1, calculation formula S1=m1* σ=56.58mm；
Step 1.11: when intersection point number becomes 0, that is, determining the position for steel plate most head position；Scan line row at this time
Into 1345 pixel distances, the actual range S that scan line is advanced is calculated2, calculation formula S2=m2* σ=105.85mm；
Step 1.12: the length of steel plate head irregular area is Shead=S2-S1, that is, determine that head cutting line position is
Apart from steel plate most head part Shead=49.27mm；
Step 2 accurately measures steel plate tail irregular area along rolling direction maximum length, process as shown in figure 4,
Include:
Step 2.1: leaving No. 1 grating sensor when travelling forward after steel plate completion is cooling with speed 0.3m/s, make No. 1 light
Gate sensor becomes 0 signal from 1 signal, and high definition area array cameras shoots picture, passback shooting picture to control system；
Step 2.2: control system carries out distortion correction to shooting picture, as shown in fig. 6, using inclination angle theta to shooting picture
Affine transformation is carried out, keeps the direction of scan line vertical with steel plate length direction, picture after being corrected；
Step 2.3: the steel plate characteristic area profile in picture after amendment being scanned, scan line is from far from cooling device
Side starts, and moves by column, each column, i.e., the n-th column, at this time n=0, and sweep spacing is a pixel, and scanning is related to the entire area ROI
Domain, scan line intersect with steel plate characteristic area profile, the pixel coordinate (R of statistics intersection point number and record intersection pointnk,Cnk)；
Step 2.4: calculating with first intersection point (R when single passn1,Cn1) and the last one intersection point (Rnk,Cnk) between
Distance D2And it records；
Step 2.5: as intersection point number k > 2 or D2When significant change occurs, that is, determine after the position part for tail portion not
Regular domain, the position are tail portion cutting line position, and scan line is advanced 824 pixel distances at this time, using single after correction
The actual range σ of pixel calculates the actual range S that scan line is advanced3, calculation formula S3=n1* σ=64.84mm；
Step 2.6: when intersection point number becomes 0, that is, determining the position for steel plate most tail position, scan line is advanced at this time
1455 pixel distances calculate the actual range S that scan line is advanced using the actual range σ of single pixel after correction4, calculate public
Formula is S4=n2* σ=114.50mm；
Step 2.7: the length of steel plate tail irregular area is Stail=S4–S3=49.66mm；
Step 2.8: when steel plate makes No. 2 grating sensors become 1 signal from 0 signal, closing high definition area array cameras.
The combination of pattern or any two kinds of patterns for any one steel plate end in attached drawing 1 can use embodiment
In measurement method carry out dynamic steel plate end shear line on-line optimization measurement.
Claims (7)
1. a kind of hot steel plate end Shearing Optimization method after rolling characterized by comprising
Step 1, the accurately measuring online along rolling direction maximum length to steel plate head irregular area hot after rolling；
Step 2, the accurately measuring online along rolling direction maximum length to steel plate tail irregular area hot after rolling.
2. hot steel plate end Shearing Optimization method after a kind of rolling according to claim 1, which is characterized in that the step
Rapid 1 includes:
Step 1.1: installation measuring system guarantees that high definition area array cameras shooting field range covers No. 1, No. 2 grating sensors it
Between region, high intense light source covering camera shoots field range；It is installed the rear inside and outside parameter of calibration for cameras shooting area；
Step 1.2: after calibration for cameras, control system calculates the actual range σ of single pixel according to calibration numerical value, and foundation has been marked
Picture measured zone (ROI) is shot in fixed camera shooting area parameter setting control system, which includes that tested steel plate is complete
Portion's end features；
Step 1.3: being travelled forward after steel plate completes cooling with speed v, after triggering No. 1 grating sensor, make No. 1 grating sensing
Device becomes 1 signal from 0 signal, and high definition area array cameras is opened, high after steel plate triggers No. 2 grating sensors into state to be clapped
Clear area array cameras shoots picture, passback shooting picture to control system；
Step 1.4: control system carries out distortion correction to shooting picture, extracts the characteristic area profile of shooting picture light plate,
That is the outer shape of steel plate generates scan line close to steel plate tail side in the ROI region of shooting picture, perpendicular to level
Line starts scan by column for the first time to shooting picture, and sweep spacing is a pixel, and scanning pertains only to the area ROI for the first time
Caudal one third region is leaned in domain；
Step 1.5: each column, i.e. m column, scan line and steel plate characteristic area profile can generate two intersection points, control system record
The pixel coordinate of intersection point calculates the midpoint (R of two intersection pointsm,Cm) and record；
Step 1.6: after scanned for the first time, the midpoint coordinates being calculated being fitted to straight line, straight line is relative to water
The inclination angle theta of horizontal line is the angle of steel plate length direction center line and roller-way center line thus, the i.e. inclination angle of steel plate and horizontal direction；
Step 1.7: affine transformation being carried out to shooting picture using inclination angle theta, picture after being corrected makes steel plate length center line side
To vertical with the direction of scan line, i.e. steel plate length centerline direction and horizontal direction parallel；
Step 1.8: the steel plate characteristic area profile in picture after amendment being scanned by column for the second time, sweep spacing is one
Pixel, m=0, second of scanning area are related to entire ROI region at this time, and scan line intersects with steel plate characteristic area profile, statistics
Pixel coordinate (the R of intersection point number and record intersection pointmk,Cmk)；
Step 1.9: calculating with first intersection point (R when single passm1,Cm1) and the last one intersection point (Rmk,CmkThe distance between)
DkAnd it records；
Step 1.10: as intersection point number k > 2 or DkWhen significant change occurs, that is, part is irregular for head after determining the position
Region, the position are head cutting line position, the m of scan line traveling at this time1A pixel distance calculates the reality that scan line is advanced
Distance S1, calculation formula S1=m1*σ；
Step 1.11: when intersection point number becomes 0, that is, determining the position for steel plate most head position；The m of scan line traveling at this time2It is a
Pixel distance calculates the actual range S that scan line is advanced2, calculation formula S2=m2*σ；
Step 1.12: the length of steel plate head irregular area is Shead=S2-S1, that is, determine that head cutting line position is distance
Steel plate most head part Shead。
3. hot steel plate end Shearing Optimization method after a kind of rolling according to claim 1, which is characterized in that the step
Rapid 2 include:
Step 2.1: leaving No. 1 grating sensor when travelling forward after steel plate completion is cooling with certain speed, become it by 1 signal
When for 0 signal, high definition area array cameras shoots and records steel plate tail picture, and system starts to steel plate tail region of disorder length of field
It is accurately measured；
Step 2.2: completing the distortion correction to shooting picture, affine transformation is carried out to shooting picture using inclination angle theta, makes scan line
Direction it is vertical with steel plate length direction；
Step 2.3: the steel plate characteristic area in the picture after affine transformation being scanned, scan line is from far from cooling device one
Side starts, and moves by column, each column, i.e., the n-th column, at this time n=0, and sweep spacing is a pixel, and scanning is related to entire ROI region,
Scan line intersects with steel plate characteristic area profile, the pixel coordinate (R of statistics intersection point number and record intersection pointnk,Cnk)；
Step 2.4: calculating with first intersection point (R when single passn1,Cn1) and the last one intersection point (Rnk,CnkThe distance between)
D2And it records；
Step 2.5: as intersection point number k > 2 or D2When significant change occurs, that is, part is tail portion region of disorder after determining the position
Domain, the position are tail portion cutting line position, the n of scan line traveling at this time1A pixel distance utilizes the reality of single pixel after correction
Border distance delta calculates the actual range S that scan line is advanced3, calculation formula S3=n1*σ；
Step 2.6: when intersection point number becomes 0, that is, determine the position for steel plate most tail position, the n of scan line traveling at this time2It is a
Pixel distance calculates the actual range S that scan line is advanced using the actual range σ of single pixel after correction4, calculation formula S4
=n2*σ；
Step 2.7: the length of steel plate most tail portion irregular area is Stail=S4–S3；
Step 2.8: when steel plate makes No. 2 grating sensors become 1 signal from 0 signal, closing high definition area array cameras.
4. using the measuring system of claim 1 the method, which is characterized in that the measuring system includes: 2 grating sensings
Device, 1 high definition area array cameras, 1 set of high intense light source and control system, high definition camera side dispose two grating sensors, camera
Shooting field range covers the region between the grating sensor, and high intense light source covering camera shoots field range.
5. hot steel plate end Shearing Optimization method after a kind of rolling according to claim 1, which is characterized in that after rolling
Hot steel plate width range is < 4000mm.
6. hot steel plate end Shearing Optimization method after a kind of rolling according to claim 1, which is characterized in that after heat is rectified
Movement velocity≤3m/s of the steel plate on roller-way.
7. hot steel plate end Shearing Optimization method after a kind of rolling according to claim 1, which is characterized in that after rolling
Temperature≤650 DEG C of steel plate.
Priority Applications (1)
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| CN110026449A (en) * | 2019-04-29 | 2019-07-19 | 沈阳建筑大学 | A kind of on-line measurement system and method based on machine vision |
| CN110116138A (en) * | 2019-06-13 | 2019-08-13 | 沈阳建筑大学 | Hot steel plate length and lateral bending measurement method in a kind of operation of rolling |
| CN111709573A (en) * | 2020-06-15 | 2020-09-25 | 重庆钢铁股份有限公司 | Optimal daughter board planning method and system for hot-cutting and shearing steel plate to be sheared |
| CN112845599A (en) * | 2021-01-25 | 2021-05-28 | 李子誉 | Device and process for shearing head of section steel rolled piece and section steel production line |
| CN112974533A (en) * | 2019-12-12 | 2021-06-18 | 上海梅山钢铁股份有限公司 | Strip steel head and tail length optimized shearing method based on hot rolling incoming material data |
| CN113857559A (en) * | 2021-09-24 | 2021-12-31 | 沪工智能科技（苏州）有限公司 | Plate edge searching mechanism, cutting machine and plate edge searching method |
| CN114029544A (en) * | 2021-11-09 | 2022-02-11 | 广东韶钢松山股份有限公司 | Anti-locking device and method for fixed-length shear conveying chain |
| CN114083051A (en) * | 2021-12-01 | 2022-02-25 | 太原科技大学 | Steel plate fixed-length shearing system and method based on line structured light |
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| CN109967786B (en) * | 2019-04-26 | 2021-02-05 | 太原科技大学 | A precise shearing system for strip steel |
| CN110026449A (en) * | 2019-04-29 | 2019-07-19 | 沈阳建筑大学 | A kind of on-line measurement system and method based on machine vision |
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| CN112974533A (en) * | 2019-12-12 | 2021-06-18 | 上海梅山钢铁股份有限公司 | Strip steel head and tail length optimized shearing method based on hot rolling incoming material data |
| CN111709573A (en) * | 2020-06-15 | 2020-09-25 | 重庆钢铁股份有限公司 | Optimal daughter board planning method and system for hot-cutting and shearing steel plate to be sheared |
| CN112845599A (en) * | 2021-01-25 | 2021-05-28 | 李子誉 | Device and process for shearing head of section steel rolled piece and section steel production line |
| CN113857559A (en) * | 2021-09-24 | 2021-12-31 | 沪工智能科技（苏州）有限公司 | Plate edge searching mechanism, cutting machine and plate edge searching method |
| CN114029544A (en) * | 2021-11-09 | 2022-02-11 | 广东韶钢松山股份有限公司 | Anti-locking device and method for fixed-length shear conveying chain |
| CN114083051A (en) * | 2021-12-01 | 2022-02-25 | 太原科技大学 | Steel plate fixed-length shearing system and method based on line structured light |
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