CN106871807A - A kind of flat board steel billet amount of deflection detection method and device - Google Patents
A kind of flat board steel billet amount of deflection detection method and device Download PDFInfo
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- CN106871807A CN106871807A CN201710030311.6A CN201710030311A CN106871807A CN 106871807 A CN106871807 A CN 106871807A CN 201710030311 A CN201710030311 A CN 201710030311A CN 106871807 A CN106871807 A CN 106871807A
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- test
- image
- test block
- deflection
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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
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/167—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by projecting a pattern on the object
Abstract
The invention discloses a kind of flat board steel billet amount of deflection detection method and device, belong to steel forming processing technology field.For solve in the prior art for flat board steel billet amount of deflection detect, exist obtain the testing result time it is long, operator's subjectivity is higher, and the relatively low problem of certainty of measurement.The method includes：The test image of the test block is obtained according to the time of setting and the movement velocity of test block；Image procossing is carried out to the test image, the deflection value of each test zone of test block is obtained；According to the test block in the deflection value of different test zones, determine that region residing for maximum immunity value is located at the position of the test block.
Description
Technical field
The present invention relates to steel forming processing technology field, more particularly relate to a kind of flat board steel billet amount of deflection detection method and
Device.
Background technology
Amount of deflection refers to that center line of the bar is in the displacement of the lines or plate perpendicular to axis direction when stress or non-uniform temperature change
Face is in the displacement of the lines perpendicular to middle face direction in shell.
At present, for flat board steel billet deflection metrology, mainly including following several method：Contact measurement method, the method
In, measuring probe needs to be contacted with certain pressure with flat board steel billet, and is moved axially along flat board steel billet, according to measuring probe
The beating scope of measuring probe in moving process on flat board steel billet, it may be determined that flat board steel billet amount of deflection in one direction.
Because in above-mentioned measuring method, measuring probe is constantly in pressure contact state with flat board steel billet, and has relative movement, because
This, can produce certain destructive power between measuring probe and flat plate steel base, and above-mentioned measuring method measurement result it is main by
Alignment point and alignment amount when operator determines flat board steel billet alignment according to measurement result, induce one very big master in this process
The property seen.Another kind is projected on flat board steel billet, another using the image sensor of multi-line structured light by by multi-line structured light
Angle is imaged to projected light, then the deformation at projection line position is recovered according to trigonometry principle, so as to obtain flat board
The amount of deflection of steel billet.In the above-mentioned methods, due to the limitation of projection line quantity, the change at a small amount of discrete location can only be obtained
Shape so that certainty of measurement be restricted, meanwhile, need to carry out flat board steel billet big depth field imaging in measurement process, be imaged
The aberration of system influences very big to measurement result.
In sum, the existing detection method for flat board steel billet amount of deflection, exist acquisition the testing result time it is long,
Operator's subjectivity is higher, and the relatively low problem of certainty of measurement.
The content of the invention
The embodiment of the present invention provides a kind of flat board steel billet amount of deflection detection method and device, is used to solve be directed in the prior art
Flat board steel billet amount of deflection detect, exist acquisition the testing result time it is long, operator's subjectivity is higher, and certainty of measurement is relatively low
Problem.
The embodiment of the present invention provides a kind of flat board steel billet amount of deflection detection method, including：
The test image of the test block is obtained according to the time of setting and the movement velocity of test block；
Image procossing is carried out to the test image, the deflection value of each test zone of test block is obtained；
According to the test block in the deflection value of different test zones, determine that region residing for maximum immunity value is located at the survey
The position of test specimen.
Preferably, the test image that the test block is obtained according to the time of setting and the movement velocity of test block
Before, also include：
The test block is fixed on mobile support, the mobile support is by motor controller controls translational speed.
Preferably, the test chart that the test block is obtained according to the time of setting and the movement velocity of test block
Picture, including：
First light source provides uniform light field for image acquisition device, and secondary light source provides measuring basis for described image collector
Line；
Described image collector carries out IMAQ to the test block at set time intervals, obtains the test
The test image of part；
Wherein, the bright-dark degree according to the test image adjusts the distribution of light intensity that first light source is provided.
Preferably, it is described that image procossing is carried out to the test image, obtain scratching for each test zone of test block
Angle value, including：
Image procossing is carried out to the test image, measuring basis line projection described in every width test image is obtained,
If there is amount of deflection on the test block surface, according to the benchmark line projection, the amount of deflection on the test block surface is determined using trigonometry
Value.
The embodiment of the present invention also provides a kind of flat board steel billet deflection detector, including：
Image acquisition units, the survey of the test block is obtained for the time according to setting and the movement velocity of test block
Attempt picture；
Graphics processing unit, for carrying out image procossing to the test image, obtains described each test section of test block
The deflection value in domain；
Determining unit, in the deflection value of different test zones, determines residing for maximum immunity value for according to the test block
Region is located at the position of the test block.
Preferably, also including carrier unit, for fixing the test block；
The carrier unit is by motor control translational speed.
Preferably, described image collecting unit specifically for：
First light source provides uniform light field for image acquisition device, and secondary light source provides measuring basis for described image collector
Line；
Described image collector carries out IMAQ to the test block at set time intervals, obtains the test
The test image of part；
Wherein, the bright-dark degree according to the test image adjusts the distribution of light intensity that first light source is provided.
Preferably, described image processing unit specifically for：
Image procossing is carried out to the test image, measuring basis line projection described in every width test image is obtained,
If there is amount of deflection on the test block surface, according to the benchmark line projection, the amount of deflection on the test block surface is determined using trigonometry
Value.
In the embodiment of the present invention, the test of the test block is obtained according to the time of setting and the movement velocity of test block
Image；Image procossing is carried out to the test image, the deflection value of each test zone of test block is obtained；According to the survey
Test specimen determines that region residing for maximum immunity value is located at the position of the test block in the deflection value of different test zones.Above-mentioned side
In method, using non-contact test method, the test image of the test block difference test zone that can be obtained is used to test image
Image procossing, can within a short period of time determine deflection value of the test block in different test zones, it is achieved thereby that test block is scratched
Angle value is analyzed in real time, and determines particular location of the region residing for maximum immunity value in the test block, it is ensured that testing result has
Intuitive, further, due to above-mentioned measuring method combination acquisition technology, image processing techniques, such that it is able to improve
The measuring accuracy of test block.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of flat board steel billet amount of deflection detection method schematic flow sheet provided in an embodiment of the present invention；
Fig. 2 is flat board steel billet amount of deflection Online Transaction Processing schematic diagram provided in an embodiment of the present invention；
Fig. 3 is flat board steel billet provided in an embodiment of the present invention and normal line imaging schematic diagram；
Fig. 4 is triangulation schematic diagram provided in an embodiment of the present invention；
Fig. 5 is a kind of flat board steel billet deflection detector structural representation provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is a kind of flat board steel billet amount of deflection detection method flow chart provided in an embodiment of the present invention, and the method can be applied
In the on-line checking of forge piece amount of deflection.
As shown in figure 1, a kind of flat board steel billet amount of deflection detection method provided in an embodiment of the present invention mainly comprises the following steps：
Step 101, the test image of the test block is obtained according to the time of setting and the movement velocity of test block；
Step 102, image procossing is carried out to the test image, obtains the amount of deflection of each test zone of test block
Value；
Step 103, according to the test block in the deflection value of different test zones, determines region position residing for maximum immunity value
In the position of the test block.
It should be noted that before step 101, also including, first test block is fixed on mobile support, actually should
In, mobile support can determine size according to practical application scene, in embodiments of the present invention, to the chi of mobile support
It is very little not do specific restriction.
In actual applications, because electric machine controller is according to setting by the active of integrated circuit come controlled motor
Direction, speed, angle, the response time is operated.In embodiments of the present invention, in order to precise control movement support
Movement velocity, it is preferable that the movement velocity of support is moved using motor controller controls.
In a step 101, after test block is fixed on mobile support, motor controller controls move the fortune of support
Dynamic speed, meanwhile, image acquisition device can obtain test block in difference according to the time of setting, the translational speed according to test block
Domain test image.
In actual applications, if test block is long, in order to save image acquisition time, many images can be simultaneously set
Collector, subregion domain measurement is carried out such that it is able to length is divided into multistage than larger test block, in embodiments of the present invention,
Particular number to image acquisition device is not limited.
Further, in order to accurate each area planar amount of deflection of determination test block, electric machine controller needs control to move
Dynamic support moves to terminal from starting point, so that it is guaranteed that image acquisition device can obtain test chart of the test block in different zones
Picture.
It should be noted that the time interval that image acquisition device obtains test block image can preset, it is also possible to root
Movement velocity according to mobile support determines, in embodiments of the present invention, to the time interval of image acquisition device acquisition test image
Specific establishing method do not limit.
As shown in Fig. 2 being flat board steel billet amount of deflection on-line measurement system schematic diagram provided in an embodiment of the present invention.Such as Fig. 2 institutes
Show, the measuring system includes image acquisition device 201, the first light source 202-1, secondary light source 202-2, light source controller 203, treatment
Device 204, electric machine controller 205, mobile support 206 and moving track 207.
Wherein, the test block that image acquisition device 201 can be at set time intervals to setting on mobile support 206 enters
Row IMAQ, specifically, translational speed of the mobile support 206 of the control of electric machine controller 205 on moving track 207, meanwhile,
When mobile support 206 is moved, the test block to being arranged on mobile support 206 carries out image and adopts image acquisition device 201
Collection.
Specifically, image acquisition device 201 is strong in order to get light and shade when the test image of test block different zones is obtained
The moderate test image of degree, it is preferable that be respectively provided with the first light source 202-1 and secondary light source in the both sides of image acquisition device
202-2, wherein, the first light source 202-1 provides uniform light field for image acquisition device 201, and secondary light source 202-2 is IMAQ
Device 201 provides measurement base directrix.
In actual applications, because image acquisition device 201 needs to get the test image of light and shade moderate strength, and first
Light source 202-1 provides uniform light field for image acquisition device 201, therefore, if the bright-dark degree of the test image for collecting is not inconsistent
Actual requirement is closed, then the intensity of illumination of the first light source 202-1 according to the actual bright-dark degree of test image, can be adjusted, specifically
Ground, can adjust the light intensity of the first light source 202-1 by light source controller 203, so as to change the first light source 202-1 for image
The light intensity of the uniform light field that collector 201 is provided.
Further, the translational speed of mobile support 206, the time that can be set according to image acquisition device 201 is come in advance
Setting.In embodiments of the present invention, the time interval to the collecting test image of image acquisition device 201 does not do specific restriction, together
When, the translational speed to mobile support 206 does not do specific restriction yet.
In a step 102, the test image of test block different zones is obtained due to image acquisition device 201, therefore, right
, it is necessary to carry out image procossing to whole test images that image acquisition device 201 gets when test image carries out image procossing.Tool
Body ground, according to the sequencing for obtaining test image, image procossing is carried out to every width test image, in the every width test image of acquisition
Secondary light source 202-2 provide measuring basis line projection.Wherein, if the surface of test block smooths, in the absence of amount of deflection, then test
The measurement base directrix of secondary light source 202-2 offers is projected as straight line in image；If the surface Non-smooth surface of test block, exists and scratches
Will there is bulge in degree, the then measuring basis line projection that secondary light source 202-2 is provided in test image.
As shown in figure 3, being flat board steel billet provided in an embodiment of the present invention and normal line imaging schematic diagram.As shown in figure 3,
The normal line being projected out of the 301 and 302 measurement base directrixes provided for secondary light source, when the surface of test block is smooth state, then
Two normal lines are all straight line, i.e. dotted line 301 and solid line 302 all should be straight line in digital picture after test image treatment；
When the surface of test block is for Non-smooth surface and when there is amount of deflection, then two normal lines have in the data image after test image treatment
One normal line becomes curve, ledge on the dotted line 301 in such as Fig. 3.
In embodiments of the present invention, the measuring basis line projection for being provided for secondary light source, using triangulation figure, can
To determine the deflection value of test surfaces.
As shown in figure 4, be triangulation schematic diagram provided in an embodiment of the present invention, wherein, P points are secondary light source 202-
2 positions, C points are the position of image acquisition device 201, wherein, the distance between P points and C points are W.R is flat for test block
Face, the line W between P points and C points is parallel to each other with test block plane, and line and test block plane R between P points and C points
Between vertical range be L.Light beam from P points is irradiated to and A points is intersected on test block plane R, when test block plane R surfaces
Unsmooth, when there is surface bulge, PA lines intersect at H points with surface bulge.
Further, from the test image after image procossing, it may be determined that when test block uneven surface, there is drum
Bao Shi, the striped of the A points being now irradiated on test block surface is subjected to displacement accordingly, in embodiments of the present invention, it is assumed that A points
It is displaced to B points, and A points are S to the distance between B points, then according to similar triangle theory, can determine the height of surface bulge h
Degree, that is, determine test block surface deflection value.
Specifically, the height of surface bulge h can be determined according to following equation (1)：
In formula (1), S is stripe displacement distance in test image, and L is image acquisition device 201 and secondary light source 202-2
Between line and test block surface between vertical range, W is company between image acquisition device 201 and secondary light source 202-2
Line.
In step 103, area residing for maximum immunity value is determined in the deflection value of different test zones according to the test block
Domain is located at the position of the test block.
In actual applications, according to the deflection value of the test block regional for determining, it may be determined that the maximum of test block is scratched
Angle value, because the sequencing for when image procossing is carried out, being the test image obtained according to image acquisition device is carried out, and moves
What the movement velocity of dynamic support and the collection image temporal interval of image acquisition device setting were also to determine, therefore, it can quick true
Determine particular location of the maximum immunity value positioned at test block.
Based on same inventive concept, a kind of flat board steel billet deflection detector is the embodiment of the invention provides, due to the dress
Put solve technical problem principle it is similar to a kind of flat board steel billet amount of deflection detection method, therefore the device the implementation side of may refer to
The implementation of method, repeats part and repeats no more.
As described in Figure 5, it is a kind of flat board steel billet deflection detector structural representation provided in an embodiment of the present invention, including
Image acquisition units 501, graphics processing unit 502, determining unit 503 and carrier unit 504.
Image acquisition units 501, the test block is obtained for the time according to setting and the movement velocity of test block
Test image；
Graphics processing unit 502, for carrying out image procossing to the test image, each is tested to obtain the test block
The deflection value in region；
Determining unit 503, in the deflection value of different test zones, maximum immunity value institute is determined for according to the test block
Place region is located at the position of the test block.
Preferably, also including carrier unit 504, for fixing the test block, the carrier unit 504 is by motor control
Translational speed.
Preferably, described image collecting unit 501 specifically for：
First light source provides uniform light field, and secondary light source provides measurement base directrix；
IMAQ is carried out to the test block at set time intervals, the test image of the test block is obtained；
Wherein, uniform light field can adjust the intensity of illumination of first light source according to the bright-dark degree of the test image.
Preferably, described image processing unit 502 specifically for：
Image procossing is carried out to the test image, measuring basis line projection described in every width test image is obtained,
If there is amount of deflection on the test block surface, according to the benchmark line projection, the amount of deflection on the test block surface is determined using trigonometry
Value.
It should be appreciated that the unit that includes of one of the above flat board steel billet deflection detector only according to the apparatus realize
The logical partitioning that carries out of function, in practical application, the superposition or fractionation of said units can be carried out.And the embodiment is provided
A kind of a kind of flat board steel billet amount of deflection detection that is provided with above-described embodiment of the function realized of flat board steel billet deflection detector
Method is corresponded, and for the more detailed handling process that the device is realized, has been done in above method embodiment one in detail
Thin description, is not described in detail herein.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.And, the present invention can be used and wherein include the computer of computer usable program code at one or more
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) is produced
The form of product.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram are described.It should be understood that every first-class during flow chart and/or block diagram can be realized by computer program instructions
The combination of flow and/or square frame in journey and/or square frame and flow chart and/or block diagram.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of being specified in present one flow of flow chart or multiple one square frame of flow and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy
In determining the computer-readable memory that mode works so that instruction of the storage in the computer-readable memory is produced and include finger
Make the manufacture of device, the command device realize in one flow of flow chart or multiple one square frame of flow and/or block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented treatment, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (8)
1. a kind of flat board steel billet amount of deflection detection method, it is characterised in that including：
The test image of the test block is obtained according to the time of setting and the movement velocity of test block；
Image procossing is carried out to the test image, the deflection value of each test zone of test block is obtained；
According to the test block in the deflection value of different test zones, determine that region residing for maximum immunity value is located at the test block
Position.
2. detection method as claimed in claim 1, it is characterised in that the motion of the time and test block according to setting
Before speed obtains the test image of the test block, also include：
The test block is fixed on mobile support, the mobile support is by motor controller controls translational speed.
3. detection method as claimed in claim 1, it is characterised in that the motion of the time and test block according to setting
Speed obtains the test image of the test block, including：
First light source provides uniform light field for image acquisition device, and secondary light source provides measurement base directrix for described image collector；
Described image collector carries out IMAQ to the test block at set time intervals, obtains the test block
Test image；
Wherein, the bright-dark degree according to the test image adjusts the distribution of light intensity that first light source is provided.
4. detection method as claimed in claim 3, it is characterised in that described to carry out image procossing to the test image, obtains
The deflection value of each test zone of test block is taken, including：
Image procossing is carried out to the test image, measuring basis line projection described in every width test image is obtained, if institute
Stating test block surface has amount of deflection, according to the benchmark line projection, the deflection value on the test block surface is determined using trigonometry.
5. a kind of flat board steel billet deflection detector, it is characterised in that including：
Image acquisition units, the test chart of the test block is obtained for the time according to setting and the movement velocity of test block
Picture；
Graphics processing unit, for carrying out image procossing to the test image, obtains each test zone of test block
Deflection value；
Determining unit, in the deflection value of different test zones, region residing for maximum immunity value is determined for according to the test block
Positioned at the position of the test block.
6. detection means as claimed in claim 5, it is characterised in that also including carrier unit, for fixing the test block；
The carrier unit is by motor control translational speed.
7. detection means as claimed in claim 5, it is characterised in that described image collecting unit specifically for：
First light source provides uniform light field for image acquisition device, and secondary light source provides measurement base directrix for described image collector；
Described image collector carries out IMAQ to the test block at set time intervals, obtains the test block
Test image；
Wherein, the bright-dark degree according to the test image adjusts the distribution of light intensity that first light source is provided.
8. detection means as claimed in claim 7, it is characterised in that described image processing unit specifically for：
Image procossing is carried out to the test image, measuring basis line projection described in every width test image is obtained, if institute
Stating test block surface has amount of deflection, according to the benchmark line projection, the deflection value on the test block surface is determined using trigonometry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710030311.6A CN106871807A (en) | 2017-01-07 | 2017-01-07 | A kind of flat board steel billet amount of deflection detection method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710030311.6A CN106871807A (en) | 2017-01-07 | 2017-01-07 | A kind of flat board steel billet amount of deflection detection method and device |
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| CN106871807A true CN106871807A (en) | 2017-06-20 |
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| CN201710030311.6A Pending CN106871807A (en) | 2017-01-07 | 2017-01-07 | A kind of flat board steel billet amount of deflection detection method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617775A (en) * | 2019-09-26 | 2019-12-27 | 杭州鲁尔物联科技有限公司 | Method, device and system for monitoring bridge deflection based on visual perception |
| CN111758018A (en) * | 2020-05-28 | 2020-10-09 | 郑州机械研究所有限公司 | Controller, flux-cored wire filling rate detection method and device |
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| CN103925886A (en) * | 2013-01-15 | 2014-07-16 | 中芯国际集成电路制造(上海)有限公司 | Wafer deformation detection system and method |
| CN105806247A (en) * | 2016-05-23 | 2016-07-27 | 南京林业大学 | Wood board warping online detection device and detection method |
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| US4981360A (en) * | 1989-05-10 | 1991-01-01 | Grumman Aerospace Corporation | Apparatus and method for projection moire mapping |
| CN1900651A (en) * | 2006-07-27 | 2007-01-24 | 西安交通大学 | Three dimension object contour phase measuring method based on double frequency color strip projection |
| CN102506736A (en) * | 2011-10-31 | 2012-06-20 | 西安工业大学 | Contactless online detection method for round billet deflection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110617775A (en) * | 2019-09-26 | 2019-12-27 | 杭州鲁尔物联科技有限公司 | Method, device and system for monitoring bridge deflection based on visual perception |
| CN111758018A (en) * | 2020-05-28 | 2020-10-09 | 郑州机械研究所有限公司 | Controller, flux-cored wire filling rate detection method and device |
| CN111758018B (en) * | 2020-05-28 | 2023-07-28 | 郑州机械研究所有限公司 | Controller, flux-cored wire filling rate detection method and equipment |
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Application publication date: 20170620 |