CN105486691B - Automatic positioning device and method for illumination angle in steel plate surface quality detection - Google Patents
Automatic positioning device and method for illumination angle in steel plate surface quality detection Download PDFInfo
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- CN105486691B CN105486691B CN201410483659.7A CN201410483659A CN105486691B CN 105486691 B CN105486691 B CN 105486691B CN 201410483659 A CN201410483659 A CN 201410483659A CN 105486691 B CN105486691 B CN 105486691B
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Abstract
An automatic positioning device and method for detecting the illumination angle of the surface quality of a steel plate, wherein the device comprises a bearing, a stepping motor, a camera, a transmission shaft, a clamp, a line light source, a slide block, a base, a computer and a support frame consisting of an upright post, an upper beam and a lower beam; the two ends of an upper cross beam and a lower cross beam, the outer sides of which are provided with stepping motors, are connected to the upper and lower slide blocks of the upright posts, and the inner side of the cross beam is provided with a camera; the transmission shaft fixed on the upper and lower beams through bearings is connected with a stepping motor, the transmission shaft is connected with a wire light source, and a computer is connected with the stepping motor and a camera. When the steel plate passes through the space between the two line light sources, the computer motion controller drives the stepping motor to rotate the irradiation angle of the line light sources, and simultaneously, the camera collects the line image of the steel plate, automatically searches the value of the irradiation angle of the line light sources when the gray value of the line image is maximum, judges the most suitable irradiation angle of the line light sources and realizes the automatic positioning of the irradiation angle. The invention can reduce the maintenance workload, shorten the time for adjusting and positioning and improve the accuracy of adjustment and positioning.
Description
Technical field
The invention belongs to plate quality detection field, more particularly to a kind of line source for plate surface quality detection to shine
Firing angle degree automatic positioning equipment and localization method.
Background technology
The image of quick moving steel plate on production line is gathered in plate surface quality detecting system using more cameras, and
By recognizing steel plate defect to the further processing of gathered image.The quality of image in itself is to whole steel plate during this
Surface Quality Inspection System is extremely crucial.Then it is that one of influence surface of steel plate image detection quality is very heavy and illumination is fine or not
The factor wanted.
What is applied in plate surface quality detecting system is line scanning camera and line source.In the bar shaped light irradiation of line source
Under, line scanning camera is and continuous with the motion of steel plate constantly to one line of steel plate, the carry out IMAQ of line
It is built up as image.Line scanning camera needs to ensure that the irradiating angle of line source is appropriate, its striation irradiated is just fallen
On the steel plate lines picture position that line scanning camera is gathered, ensure that line scanning camera can collect the clear figure of high quality
Picture.
At present.In plate surface quality detecting system, adjustment and positioning to the line source irradiating angle of camera are still
It is the work wasted time and energy using method manually.The adjustment of line source irradiating angle and it is positioned at surface of steel plate
Just need to carry out during the initial installation of quality detecting system.Simultaneously because the slackness of steel plate is different or variation can cause line source
The striation irradiated falls on undesirable irradiation position, therefore is also required to shine line source in steel plate production line on-line operation
Firing angle degree is adjusted and positioned.In the practical application of plate surface quality detecting system, because maintenance, steel plate slackness become
The reasons such as dynamic, location parameter variation, manually adjusting and positioning for light source radiating angle need not timing to carry out, belonged to
A part for plate surface quality detecting system applicating maintenance work is, it is necessary to many manual labor.If steel plate production line exists
When line is run, can also there is certain potential safety hazard using manually adjusting and positioning.
The content of the invention
The present invention provides a kind of plate surface quality detection lighting angle automatic positioning equipment and localization method, its purpose purport
The drawbacks of manually adjusting with position line light source radiating angle is being eliminated, is reducing maintenance workload, is improving adjustment, the standard positioned
Exactness and detection quality.
Therefore, the solution that the present invention takes is：
A kind of plate surface quality detects lighting angle automatic positioning equipment, including：Bearing 2, stepper motor 4, camera 5,
Power transmission shaft 6, fixture 7, line source 8, sliding block 9, base 10, computer 12 and support frame；Frame-type support frame is by two root posts
1st, entablature 3 and sill 11 form, and the top and the bottom of two root posts 1 are movably connected with a sliding block 9, entablature 3 and sill
11 both ends are connected on the top and the bottom sliding block 9 of column 1, and the lower end of column 1 is fixed on base 10；In entablature 3 with
The outside of crossbeam 11 is respectively fixed with stepper motor 4, and inner side is connected to camera 5；Stepper motor 4 is connected with power transmission shaft 6, is passed
The both ends of moving axis 6 are fixed on entablature 3 and sill 11 by bearing 2, pass through fixture 7 respectively in the inner side of two power transmission shafts 6
It is connected with line source 8；Camera 5 connects computer 12 by network communication interface, and the motion controller of computer 12 passes through control
Signal wire is connected with stepper motor 4.
A kind of method that plate surface quality detection lighting angle is automatically positioned, its specific method and process are：
The irradiating angle for defining line source 8 is that irradiating angle is 0 ° when line source 8 is pointed into steel plate 13 vertically, line source 8
It it is 90 ° when horizontal direction is pointed into 5 direction of camera, irradiating angle mobility scale is between 0 °~90 °.
The irradiating angle of advance demarcation linear light source 8 is often rotated between the number of drive pulses of unit value and stepper motor 3
Corresponding relation, and calibration result data are preserved, so as in operation according to pair of calibrated angle value and umber of pulse
It should be related to, converse the irradiating angle of current line source 8.
When under transport of the steel plate 13 in roller 14 level between upper and lower two line sources 8 by when, upper and lower two lines
Light source 8 will be radiated in the upper and lower surface of steel plate 13 respectively, and the camera 5 on lower and upper cross-member also gathers steel plate about 13 simultaneously
The lines image on surface, computer 12 receive the lines image of the collection of camera 5, the motion control of computer 12 by network communication respectively
Device output pulsed drive stepper motor 4 processed drives power transmission shaft 6 and line source 8 to rotate, in the irradiating angle of line source 8 from 0 ° to 90 °
During rotation, the lines image that camera 5 gathers, 4 turns of the stepper motor that record is converted with umber of pulse are constantly received
Dynamic angle value is the illumination angle angle value of line source 8, and records the gray value for receiving the lines image that camera 5 gathers, lines image
Illumination angle angle value corresponding to maximum gradation value is the optimum value of the irradiating angle of line source 8, is irradiated according to the line source 8 obtained
The optimum value of angle, by stepper motor 4 line source 8 can be driven to adjust irradiating angle again, realize being automatically positioned for irradiating angle.
The present invention rotates the photograph of line source using the industrial control computer Driving Stepping Motor equipped with motion controller
Firing angle degree, while industrial control computer scans camera to gather the lines image on steel plate by line.By searching line automatically
The illumination angle angle value of line source when scanning camera gathers lines image intensity value maximum, to judge most suitable line source
Irradiating angle realizes that line source irradiating angle is automatically positioned.Compared with manually mode, the invention has the advantages that：
1st, adjust automatically and the positioning of lighting angle are realized, maintenance workload is reduced, reduces labor intensity.
2nd, the time of adjustment and positioning can be greatly shortened, improve operating efficiency.
3rd, the degree of accuracy of adjustment and positioning can be effectively improved, is advantageous to improve detection quality.
4th, potential safety hazard is eliminated, it can be ensured that testing staff's personal safety.
Brief description of the drawings
Fig. 1 is the plate surface quality detection main schematic diagram of lighting angle automatic positioning equipment；
Fig. 2 is plate surface quality detection lighting angle automatic positioning equipment detection state side schematic diagram；
Fig. 3 is plate surface quality detection lighting angle automatic positioning method flow chart.
In figure：Column 1, bearing 2, entablature 3, stepper motor 4, camera 5, power transmission shaft 6, fixture 7, line source 8, sliding block 9,
Base 10, sill 11, computer 12, steel plate 13, roller 14.
Embodiment
As seen from Figure 1, plate surface quality detection lighting angle automatic positioning equipment of the present invention is mainly by bearing 2, step
Stepper motor 4, camera 5, power transmission shaft 6, fixture 7, line source 8, sliding block 9, base 10, computer 12 and support frame are formed.Support
Frame is a tower structure, is made up of column 1, entablature 3 and sill 11, and column 1 is two, each one of left and right, in column 1
Top and bottom be movably connected with a sliding block 9, the both ends of entablature 3 and sill 11 are connected to two root posts 1
Top and the bottom sliding block 9 on, the lower end of column 1 is then fixed on base 10.Fixed respectively in the outside of entablature 3 and sill 11
There is a stepper motor 4, the inner side of entablature 3 and sill 11 is respectively connected with three cameras 5.Stepper motor 4 connects with power transmission shaft 6
Connect, the both ends of power transmission shaft 6 are fixed on entablature 3 and sill 11 by bearing 2 respectively.The inner side difference of two power transmission shafts 6
Single line light source 8 is connected with by fixture 7, line source 8 can rotate under the driving of stepper motor 4 with power transmission shaft 6.Camera
5 connect industrial control computer 12 by network communication interface, and the motion controller built in computer 12 passes through control signal wire
It is connected with stepper motor 4, and the rotation of stepper motor 4 is controlled by control signal.
The method that plate surface quality detection lighting angle of the present invention is automatically positioned, its specific method and process are：
First, the irradiating angle of line source 8 is defined：When line source 8 is pointed into steel plate 13 vertically, irradiating angle is 0 °, linear light
It is 90 ° that the horizontal direction of source 8, which is pointed into during 5 direction of camera, therefore the mobility scale of irradiating angle is between 0 °~90 °.
Secondly, demarcate in advance linear light source 8 irradiating angle often rotate unit value and stepper motor 3 number of drive pulses it
Between corresponding relation, and calibration result data are preserved, so as in operation according to calibrated angle value and umber of pulse
Corresponding relation, converse the irradiating angle of current line source 8.
The control process that lighting angle is automatically positioned is：When under transport of the steel plate 13 in roller 14 level from upper and lower two
Between line source 8 by when (see Fig. 2), upper and lower two line sources 8 will be radiated in the upper and lower surface of steel plate 13 respectively, is located at
6 cameras 5 on entablature 3 and sill 11 gather the lines image of the upper and lower surface of steel plate 13, the meter being connected with camera 5 simultaneously
Calculation machine 12 receives the lines image of the collection of camera 5 by network communication respectively, and the motion controller output pulse of computer 12 is driven
Dynamic stepper motor 4 rotates, and stepper motor 4 drives power transmission shaft 6 and line source 8 to rotate together, the irradiating angle of line source 8 from 0 ° to
During 90 ° rotate, the lines image that camera 5 gathers, the stepper motor 4 that record is converted with umber of pulse are constantly received
Angle of rotation angle value be the illumination angle angle value of line source 8, and record receive camera 5 gather lines image gray value, lines figure
As maximum gradation value corresponding to illumination angle angle value be the irradiating angle of line source 8 optimum value, according to obtain line source 8
The optimum value of irradiating angle, computer 12 automatically controls stepper motor 4 and drives line source 8 to adjust irradiating angle, so as to realize photograph
Firing angle degree is automatically positioned.Specific control flow is shown in Fig. 3.
Claims (1)
1. a kind of method that plate surface quality detection lighting angle is automatically positioned, it is characterised in that：
The irradiating angle for defining line source (8) is that irradiating angle is 0 ° when line source (8) is pointed into steel plate (13) vertically, line source
(8) it is 90 ° when horizontal direction is pointed into camera (5) direction, the mobility scale of irradiating angle is between 0 °~90 °；
The irradiating angle of advance demarcation linear light source (8) is often rotated between the number of drive pulses of unit value and stepper motor (4)
Corresponding relation, and calibration result data are preserved, so as in operation according to pair of calibrated angle value and umber of pulse
It should be related to, converse the irradiating angle of current line source (8)；
When steel plate (13) under the transport of roller (14) level between upper and lower two line sources (8) by when, upper and lower two
Line source (8) will be radiated in the upper and lower surface of steel plate (13) respectively, and the camera (5) on lower and upper cross-member also gathers steel simultaneously
The lines image of plate (13) upper and lower surface, computer (12) receive the lines image of camera (5) collection by network communication respectively,
Computer (12) motion controller output pulsed drive stepper motor (4) drives power transmission shaft (6) and line source (8) to rotate, online
During light source (8) irradiating angle rotates from 0 ° to 90 °, the lines image of camera (5) collection, record arteries and veins are constantly received
Stepper motor (4) angle of rotation angle value i.e. line source (8) illumination angle angle value of number conversion is rushed, and records reception camera (5) and adopts
The gray value of the lines image of collection, the illumination angle angle value corresponding to the maximum gradation value of lines image are line source (8) irradiation
The optimum value of angle, according to the optimum value of line source (8) irradiating angle obtained, linear light can be driven by stepper motor (4) again
Source (8) adjusts irradiating angle, realizes being automatically positioned for irradiating angle；
Using the device of above-mentioned plate surface quality detection lighting angle automatic positioning method, including：Bearing (2), stepper motor
(4), camera (5), power transmission shaft (6), fixture (7), line source (8), sliding block (9), base (10), computer (12) and support frame；
Frame-type support frame is made up of two root posts (1), entablature (3) and sill (11), and the top and the bottom of two root posts (1) are lived respectively
The both ends of one sliding block of dynamic connection (9), entablature (3) and sill (11) are connected to the top and the bottom sliding block (9) of column (1)
On, column (1) lower end is fixed on base (10)；Stepping electricity is respectively fixed with the outside of entablature (3) and sill (11)
Machine (4), inner side are connected to camera (5)；Stepper motor (4) is connected with power transmission shaft (6), and power transmission shaft (6) both ends pass through bearing
(2) it is fixed on entablature (3) and sill (11), is connected respectively by fixture (7) in the inner side of two power transmission shafts (6) wired
Light source (8)；Camera (5) connects computer (12) by network communication interface, and the motion controller of computer (12) passes through control
Signal wire is connected with stepper motor (4).
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| CN201410483659.7A CN105486691B (en) | 2014-09-19 | 2014-09-19 | Automatic positioning device and method for illumination angle in steel plate surface quality detection |
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| CN201410483659.7A CN105486691B (en) | 2014-09-19 | 2014-09-19 | Automatic positioning device and method for illumination angle in steel plate surface quality detection |
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| CN105486691B true CN105486691B (en) | 2018-04-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108398088B (en) * | 2017-02-05 | 2019-06-28 | 鞍钢股份有限公司 | Vibration error correction method in strip steel width measurement |
| CN107561083A (en) * | 2017-07-26 | 2018-01-09 | 天津大学 | A kind of surface quality of steel detecting system |
| CN111982919A (en) * | 2020-08-25 | 2020-11-24 | 上海上创超导科技有限公司 | Dynamic monitoring device and detection method for surface defects of coated conductor metal base band |
| CN112763503A (en) * | 2020-12-24 | 2021-05-07 | 山西大数据产业发展有限公司 | High-grade cold-rolled silicon steel hole detection system based on machine vision |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201653917U (en) * | 2010-02-23 | 2010-11-24 | 宝山钢铁股份有限公司 | Device for acquiring defect images at surface of band steel |
| CN102818538A (en) * | 2012-09-14 | 2012-12-12 | 洛阳兰迪玻璃机器股份有限公司 | Detection system based on modulated glass thread structure laser image |
| CN202938985U (en) * | 2012-11-19 | 2013-05-15 | 天津理工大学 | Strip-shaped light source illuminance distribution detecting device based on linear array CCD camera |
| CN103185720A (en) * | 2011-12-29 | 2013-07-03 | 宝山钢铁股份有限公司 | Casting blank lower surface image detection device and detection method |
| CN204203117U (en) * | 2014-09-19 | 2015-03-11 | 鞍钢股份有限公司 | Automatic positioning device for detecting illumination angle of surface quality of steel plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201653917U (en) * | 2010-02-23 | 2010-11-24 | 宝山钢铁股份有限公司 | Device for acquiring defect images at surface of band steel |
| CN103185720A (en) * | 2011-12-29 | 2013-07-03 | 宝山钢铁股份有限公司 | Casting blank lower surface image detection device and detection method |
| CN102818538A (en) * | 2012-09-14 | 2012-12-12 | 洛阳兰迪玻璃机器股份有限公司 | Detection system based on modulated glass thread structure laser image |
| CN202938985U (en) * | 2012-11-19 | 2013-05-15 | 天津理工大学 | Strip-shaped light source illuminance distribution detecting device based on linear array CCD camera |
| CN204203117U (en) * | 2014-09-19 | 2015-03-11 | 鞍钢股份有限公司 | Automatic positioning device for detecting illumination angle of surface quality of steel plate |
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