CN205562412U - Belted steel surface defect vision detection system - Google Patents
Belted steel surface defect vision detection system Download PDFInfo
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- CN205562412U CN205562412U CN201620204694.5U CN201620204694U CN205562412U CN 205562412 U CN205562412 U CN 205562412U CN 201620204694 U CN201620204694 U CN 201620204694U CN 205562412 U CN205562412 U CN 205562412U
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Abstract
The utility model relates to a belted steel check out test set, especially belted steel surface defect vision detection system, it includes detects with camera, light source, rotary encoder, controller and computer, the light source stretch over wait to examine belted steel top and light source direct projection light on waiting to examine the belted steel direction of advance with wait to examine 44.5 angle ofs incidence of belted steel upper surface one -tenth, a cameragun axis lies in the angle of reflection that equals with the light source angle of incidence, the 2nd cameragun axis lie in with the light source unequal diffuse reflection angle in the angle of incidence because the light source adopts is the diffusion, so the orientation of first camera configuration has the certain limit, do not need the accurate positioning, the defect image showed as the bright dark target of background this moment, the configuration of second camera is in the diffusion direction of light source, if there is three -dimensional defect on the surface, the angle of reflection just is not equal to the angle of incidence so, and the light that the defect reflected can be gathered to the second camera like this, so the defect shows as the bright target of dark background.
Description
Technical field
This utility model relates to a kind of strip steel (band) detection equipment, especially steel strip surface defect vision detection system.
Background technology
Cold-rolled steel sheet is the industrial indispensable raw materials such as automobile, motor, chemical industry, shipbuilding, and in recent years, the demand of steel plate is continuously increased, and requires have higher surface quality.And in its operation of rolling, due to reasons such as continuous casting steel billet, rolling equipment, rolling mill practices, cause rolled plate surface occur in that crackle, iron scale, scab, roll marks, scratch, hole, scale, skin lamination, the defect such as pit, these defects not only have impact on product appearance, prior is reduction of the serviceabilities such as the corrosion resistance of product, wear resistence, fatigue limit.At present, each developed country, on cold-rolled steel sheet milling train, hot-rolled steel section and pickling line and tinned wire, all have employed surface defect on-line detecting system.
Surface quality Automatic Measurement Technique starts from the 70's of 20th century, up to the present, has gone through 3 developmental stage；Owing to development and the flexibility of computer vision technique are preferable, so vision detection system based on CCD is the developing direction of Surface Defects in Steel Plate detection technique.The high-resolution of line array CCD makes Surface testing just can reach the highest resolution and precision with little sensor at plate width direction, its scan rate has reached 20 more than kHz simultaneously, even if so reaching 300 mPmin when the translational speed of steel plate, the resolution of its direction of motion also can reach 0. 5 mm.Owing to it is to work by the way of scanning, it is easily achieved in row, in the ranks algorithm, and data redundancy amount is also little, so being suitable for the online detection requirements of high speed.
Summary of the invention
For the deficiencies in the prior art, this utility model provides a kind of vision detection system using CCD.
The technical solution of the utility model is:
nullSteel strip surface defect vision detection system，It is characterized in that: it includes detection photographing unit、Light source、Rotary encoder (PG encoder)、Controller and computer，Described light source is above strip steel to be checked and the direct projection light (chief ray) of light source becomes 44.5 ° of angle of incidence with strip steel upper surface to be checked in strip steel direction of advance to be checked，Described light source uses diffuse-reflectance light source，Described detection photographing unit includes the first photographing unit and the second photographing unit，Described first photographing unit and the second photographing unit are installed in above strip steel to be checked and are positioned at light source rear，Described first camera gun axis is positioned on the angle of reflection equal with light source incidence angle，Described second camera gun axis is positioned on the diffuse-reflectance angle do not waited with light source incidence angle，Described rotary encoder is arranged on strip steel feed end side to be checked and contacts with strip steel to be checked，Described first photographing unit、Second photographing unit、Light source、Rotary encoder is all connected with controller by electric wire，Described controller is connected with computer.
Further, described rotary encoder front end is additionally provided with mark printer, the effect of described mark printer is directly to print to be easy to range mark and other data that naked eyes judge on strip steel to be checked, and described mark printer connects controller by electric wire.
Further, described controller connects also by electric wire warning devices, sends audible and visible alarm when system exception.
Further, described first camera gun axis forms 40.7 ° of-48.6 ° of angles with strip steel upper surface to be checked, owing to light source is diffuse-reflectance, even if so not having fully aligned source reflection angle also can effectively detect, also allowing for installation and debugging.
Further, described second camera gun axis forms 63.1 ° of-67.2 ° of angles with strip steel upper surface to be checked, owing to diffuse-reflectance scope is quite big, therefore chooses its most effective region and detects.
Further, described light source uses the LED lamp of band diffuse-reflectance masking-out.
The beneficial effects of the utility model are: the first photographing unit is placed on the angle of reflection equal with the angle of incidence of light, owing to light source uses diffused light, so there is certain limit in the direction of the first photographing unit configuration, being not required to be accurately positioned, now defect image shows as the dark target of bright background;Second photographing unit is arranged on the diffusion direction of light source, if there is 3 D defects (defect of concavity and convexity) on surface, so angle of reflection is not equal to angle of incidence, such second photographing unit can collect the light that defect reflection is returned, so defect shows as the bright target of dark background, this kind of lighting system is applicable to such as the 3 D defects such as cut, roll marks.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is that the angle of this utility model detection photographing unit and light source arranges schematic diagram.
In figure, the 1, first photographing unit；2, the second photographing unit；3, warning devices；4, light source；5, mark printer；6, rotary encoder；7, controller；8, computer；9, strip steel to be checked.
Detailed description of the invention
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described further:
nullSuch as Fig. 1、Shown in 2，Steel strip surface defect vision detection system，It is characterized in that: it includes detection photographing unit、Light source 4、Rotary encoder 6(PG encoder)、Controller 7 and computer 8，Described light source 4 is above strip steel 9 to be checked and the direct projection light (chief ray) of light source 4 becomes 44.5 ° of angle of incidence with strip steel 9 upper surface to be checked in strip steel 9 direction of advance to be checked，Described light source 4 uses diffuse-reflectance light source，Described detection photographing unit includes the first photographing unit 1 and the second photographing unit 2，Described first photographing unit 1 and the second photographing unit 2 are installed in above strip steel 9 to be checked and are positioned at light source 4 rear，Described first photographing unit 1 camera lens axis is positioned on the angle of reflection equal with light source 4 angle of incidence，Described second photographing unit 2 camera lens axis is positioned on the diffuse-reflectance angle do not waited with light source 4 angle of incidence，Described rotary encoder 6 is arranged on strip steel 9 feed end side to be checked and contacts with strip steel 9 to be checked，Described first photographing unit 1、Second photographing unit 2、Light source 4、Rotary encoder 6 is all connected with controller 7 by electric wire，Described controller 7 is connected with computer 8.
Described rotary encoder 6 front end is additionally provided with mark printer 5, and the effect of described mark printer 5 is directly to print to be easy to range mark and other data that naked eyes judge on strip steel 9 to be checked, and described mark printer 5 connects controller 7 by electric wire.
Described controller 7 connects also by electric wire warning devices 3, sends audible and visible alarm when system exception.
Described first photographing unit 1 camera lens axis forms 40.7 ° of-48.6 ° of angles with strip steel 9 upper surface to be checked, owing to light source 4 is diffuse-reflectance, even if so not having fully aligned light source 4 angle of reflection also can effectively detect, also allowing for installation and debugging.
Described second photographing unit 2 camera lens axis forms 63.1 ° of-67.2 ° of angles with strip steel 9 upper surface to be checked, owing to diffuse-reflectance scope is quite big, therefore chooses its most effective region and detects.
Described light source 4 uses the LED lamp of band diffuse-reflectance masking-out.
Described in above-described embodiment and description, principle of the present utility model and most preferred embodiment are simply described; on the premise of without departing from this utility model spirit and scope; this utility model also has various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.
Claims (6)
- null1. steel strip surface defect vision detection system，It is characterized in that: it includes detection photographing unit、Light source、Rotary encoder、Controller and computer，Described light source is above strip steel to be checked and the direct projection light of light source becomes 44.5 ° of angle of incidence with strip steel upper surface to be checked in strip steel direction of advance to be checked，Described light source uses diffuse-reflectance light source，Described detection photographing unit includes the first photographing unit and the second photographing unit，Described first photographing unit and the second photographing unit are installed in above strip steel to be checked and are positioned at light source rear，Described first camera gun axis is positioned on the angle of reflection equal with light source incidence angle，Described second camera gun axis is positioned on the diffuse-reflectance angle do not waited with light source incidence angle，Described rotary encoder is arranged on strip steel feed end side to be checked and contacts with strip steel to be checked，Described first photographing unit、Second photographing unit、Light source、Rotary encoder is all connected with controller by electric wire，Described controller is connected with computer.
- Steel strip surface defect vision detection system the most according to claim 1, it is characterised in that: described rotary encoder front end is additionally provided with mark printer, and described mark printer connects controller by electric wire.
- Steel strip surface defect vision detection system the most according to claim 2, it is characterised in that: described controller connects also by electric wire warning devices.
- Steel strip surface defect vision detection system the most according to claim 3, it is characterized in that: described first camera gun axis forms 40.7 ° of-48.6 ° of angles with strip steel upper surface to be checked, owing to light source is diffuse-reflectance, even if so not having fully aligned source reflection angle also can effectively detect.
- Steel strip surface defect vision detection system the most according to claim 4, it is characterised in that: described second camera gun axis forms 63.1 ° of-67.2 ° of angles with strip steel upper surface to be checked.
- Steel strip surface defect vision detection system the most according to claim 5, it is characterised in that: described light source uses the LED lamp of band diffuse-reflectance masking-out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620204694.5U CN205562412U (en) | 2016-03-17 | 2016-03-17 | Belted steel surface defect vision detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620204694.5U CN205562412U (en) | 2016-03-17 | 2016-03-17 | Belted steel surface defect vision detection system |
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| CN205562412U true CN205562412U (en) | 2016-09-07 |
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| CN201620204694.5U Expired - Fee Related CN205562412U (en) | 2016-03-17 | 2016-03-17 | Belted steel surface defect vision detection system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462520A (en) * | 2017-07-25 | 2017-12-12 | 杭州电子科技大学 | Towards stainless steel plate on-line measuring device of the confined space based on machine vision |
| CN108827978A (en) * | 2018-08-16 | 2018-11-16 | 东部超导科技（苏州）有限公司 | Superconduction base band surface defects detection system and its detection method |
| CN110656236A (en) * | 2018-06-28 | 2020-01-07 | 宝山钢铁股份有限公司 | Defect control method for laser scoring of surface of high-magnetic-induction oriented silicon steel |
| CN111650212A (en) * | 2020-07-03 | 2020-09-11 | 东北大学 | Metal surface normal direction three-dimensional information acquisition method based on linear array camera three-dimensional vision |
| CN112345555A (en) * | 2020-10-30 | 2021-02-09 | 凌云光技术股份有限公司 | High bright imaging light source system of visual inspection machine |
-
2016
- 2016-03-17 CN CN201620204694.5U patent/CN205562412U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462520A (en) * | 2017-07-25 | 2017-12-12 | 杭州电子科技大学 | Towards stainless steel plate on-line measuring device of the confined space based on machine vision |
| CN107462520B (en) * | 2017-07-25 | 2023-11-28 | 杭州电子科技大学 | Stainless steel plate on-line detection device based on machine vision and oriented to limited space |
| CN110656236A (en) * | 2018-06-28 | 2020-01-07 | 宝山钢铁股份有限公司 | Defect control method for laser scoring of surface of high-magnetic-induction oriented silicon steel |
| CN108827978A (en) * | 2018-08-16 | 2018-11-16 | 东部超导科技（苏州）有限公司 | Superconduction base band surface defects detection system and its detection method |
| CN111650212A (en) * | 2020-07-03 | 2020-09-11 | 东北大学 | Metal surface normal direction three-dimensional information acquisition method based on linear array camera three-dimensional vision |
| CN112345555A (en) * | 2020-10-30 | 2021-02-09 | 凌云光技术股份有限公司 | High bright imaging light source system of visual inspection machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20170317 |
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| CF01 | Termination of patent right due to non-payment of annual fee |