CN102928437A - Surface quality recording system for metal coiled straps - Google Patents
Surface quality recording system for metal coiled straps Download PDFInfo
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- CN102928437A CN102928437A CN2012103542417A CN201210354241A CN102928437A CN 102928437 A CN102928437 A CN 102928437A CN 2012103542417 A CN2012103542417 A CN 2012103542417A CN 201210354241 A CN201210354241 A CN 201210354241A CN 102928437 A CN102928437 A CN 102928437A
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- array ccd
- surface quality
- metal coil
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Abstract
The invention relates to a surface quality recording method for metal coiled straps. The surface quality recording method comprises the following steps of: (1). carrying out parallel scanning on the metal coiled straps by utilizing a linear array CCD (Charge Coupled Device) camera for acquiring images, thus realizing high-precision image acquisition of surface quality of two sides of the metal coiled straps, wherein the lateral resolution can reach 4096P, which is four times higher than the resolution of a common high-definition camera, namely 1080P; (2). in unit time, setting the object space actual size corresponding to the total image acquired by the liner array CCD to be the same as the velocity of approach of the metal coiled straps, so as to realize synchronous control of scanning and imaging of the metal coiled straps by the linear array CCD camera; and (3). storing data to a hard disc by utilizing special high-speed video storage software suitable for process control and motion analysis occasion. The surface quality recording method has the benefits that the problem that high resolution of the image is difficult to guarantee for distinguishing different defects on the metal coiled straps if a common camera shooting method is adopted on a production line running at high speed is solved.
Description
Technical field
The invention belongs to metal coil tape surface quality recording method technical field.
Background technology
Setting up Computer aided Quality Management System is the important measures that guarantee in recent years product quality, wherein detection and control technology are its bases, although this respect has greatly improved, yet use common shooting mode to be difficult to guarantee the high-resolution of image at the production line of high-speed cruising, to distinguish the different defectives on the metal coil tape.Using image processing technique---machine vision at metal industry, is main trend and the hot technology that addresses the above problem.
Common image capture method mainly contains following several respects defective:
1, for common area array CCD image-forming detecting system, a plurality of area array CCDs visual field is mutually overlapping guarantees to detect whole plate, the shortcoming of this detection method is to have too much redundant image data, and the image processing method of processing based on software is so that whole system is huge and expensive.
2, can only adopt fixing speed to take, the metal coil tape for passing through at a high speed can cause serious sex change phenomenon.Cause the defective image distortion on the metal coil tape, can't differentiate.
3, resolution is lower, and general high-definition camera can only reach the resolution of 1080P;
Summary of the invention
The objective of the invention is to use common shooting mode to be difficult to guarantee the high-resolution of image in order to solve at the production line of high-speed cruising, to distinguish the problem of the different defectives on the metal coil tape.The metal coil tape that adopts method of the present invention can reach to opening length upper km carries out the high resolving power shooting, to the clear record of the tiny defect that exists on the roll coil of strip.
The objective of the invention is to be achieved through the following technical solutions:
The recording method of a kind of metal coil tape surface quality, feature of the present invention are to adopt following steps:
1), linear array CCD camera
Adopt linear array CCD camera that metal coil tape is carried out parallel sweep and gather image, realize the high precision image collection of the two-sided surface quality of metal coil tape; Linear array CCD camera has the high characteristics of spatial resolution, can realize the high precision shooting; Its lateral resolution reaches 4096 points, exceeds 4 times than the 1080P resolution of general high-definition camera;
2), scan-synchronized control
Linear array CCD camera gathers object space physical size corresponding to image summation and the gait of march of metal coil tape and is set to identically in unit interval, makes linear array CCD scanning metal coil tape imaging synchro control;
3), image is processed and storage
Employing is applicable to process control, and the specialized high-speed video storing software of motion analysis occasion is saved in hard disk with data.
The invention has the beneficial effects as follows, solved the high-resolution that is difficult to guarantee image in the common shooting mode of production line use of high-speed cruising, to distinguish the problem of the different defectives on the metal coil tape.The metal coil tape that adopts method of the present invention can reach to opening length upper km carries out the high resolving power shooting, to the clear record of the tiny defect that exists on the roll coil of strip.
Below in conjunction with the drawings and specific embodiments the present invention is done further explanation.
Description of drawings
Fig. 1 is system of the present invention theory of constitution block diagram.
Embodiment
The recording method of a kind of metal coil tape surface quality, feature of the present invention are to adopt following steps:
1), linear array CCD camera
Adopt linear array CCD camera that metal coil tape is carried out parallel sweep and gather image, realize the high precision image collection of the two-sided surface quality of metal coil tape; Linear array CCD camera has the high characteristics of spatial resolution, can realize the high precision shooting; Its lateral resolution reaches 4096 points, exceeds 4 times than the 1080P resolution of general high-definition camera;
2), scan-synchronized control
Linear array CCD camera gathers object space physical size corresponding to image summation and the gait of march of metal coil tape and is set to identically in unit interval, makes linear array CCD scanning metal coil tape imaging synchro control;
3), image is processed and storage
Employing is applicable to process control, and the specialized high-speed video storing software of motion analysis occasion is saved in hard disk with data.
1, linear array CCD camera scanning:
The linear array CCD scanning measuring system mainly is comprised of linear array CCD camera, motion workbench, control circuit and line source etc.Metal coil tape on the production line is advanced to right-hand with speed v (4-80m/ divides), when metal coil tape enters viewing field of camera, produce high gray level image information through light source irradiation, start image acquisition this moment, all output images are spliced by the precedence relationship that gathers, can obtain the high resolving power metal coil tape image of complete (always reaching more than the 2000m), process the image information that obtains every volume titanium plate by synchro control and image.
2, scan-synchronized control:
When scan-synchronized, the defect image of the metal coil tape that obtains is not compared with actual defects and is deformed, to its result who processes near the actual value of physical size; When collected by camera speed during greater than the metal coil tape gait of march, image is elongated, will be greater than the actual value of flaw size to its result who processes; When collected by camera speed during less than the metal coil tape gait of march, defect image is compressed, to the actual value of its result who processes less than size.
For guaranteeing the accuracy to part dimension measurement, need to carry out synchro control.Now illustrate, the Pixel Dimensions S that supposes line array CCD is 14 μ m * 14 μ m, and line sweep speed v x was 500 frame/seconds, and lens focus f is 50 mm, and camera lens is 150 mm to the distance B of titanium plate, and then the corresponding object space size of CCD pixel L is:
Then linear array CCD camera gathers object space physical size corresponding to image summation (being CCD camera scanning speed image v) and is in the unit interval:
In this case, realize that it is 21 mm/s that scan-synchronized then requires the gait of march of metal coil tape.In the metal coil tape image acquisition of reality, we need to be according to the speed v of production line, regulates the line frequency of line array CCD, make it with production line on the synchronized movement of metal coil tape.
3 images are processed and storage
Employing is applicable to process control, and the specialized high-speed video storing software of the occasions such as motion analysis directly is saved in the video data of maximum per second 650 megabyte among the PC.
Claims (1)
1. metal coil tape surface quality recording method is characterized in that, adopts following steps:
1), linear array CCD camera
Adopt linear array CCD camera that metal coil tape is carried out parallel sweep and gather image, realize the high precision image collection of the two-sided surface quality of metal coil tape; Its lateral resolution reaches 4096 points, exceeds 4 times than the 1080P resolution of general high-definition camera;
2), scan-synchronized control
Linear array CCD camera gathers object space physical size corresponding to image summation and the gait of march of metal coil tape and is set to identically in unit interval, makes linear array CCD scanning metal coil tape imaging synchro control;
3), image is processed and storage
Employing is applicable to process control, and the specialized high-speed video storing software of motion analysis occasion is saved in hard disk with data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103542417A CN102928437A (en) | 2012-09-21 | 2012-09-21 | Surface quality recording system for metal coiled straps |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103542417A CN102928437A (en) | 2012-09-21 | 2012-09-21 | Surface quality recording system for metal coiled straps |
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| CN102928437A true CN102928437A (en) | 2013-02-13 |
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| CN2012103542417A Pending CN102928437A (en) | 2012-09-21 | 2012-09-21 | Surface quality recording system for metal coiled straps |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516987A (en) * | 2013-10-09 | 2014-01-15 | 哈尔滨工程大学 | High-speed image collection and real-time storage system |
| CN104660999A (en) * | 2015-03-13 | 2015-05-27 | 河南科技大学 | Method and device for acquiring standard images of non-uniform velocity moving objects |
| CN114801100A (en) * | 2022-04-26 | 2022-07-29 | 健大电业制品（昆山）有限公司 | Injection molding sorting unit |
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| CN101510085A (en) * | 2009-03-13 | 2009-08-19 | 东华大学 | Fluoroplastic film defect on-line detecting control system based on process control machine |
| CN201754149U (en) * | 2010-07-02 | 2011-03-02 | 盛泰光电股份有限公司 | Double-side detecting device |
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| CN102284431A (en) * | 2011-04-28 | 2011-12-21 | 河南科技大学 | On-line detection grading device for lithium ion battery pole piece and method thereof |
| CN202362253U (en) * | 2011-11-28 | 2012-08-01 | 深圳市鹰眼在线电子科技有限公司 | On-line visual detection system for coating quality of battery pole piece |
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2012
- 2012-09-21 CN CN2012103542417A patent/CN102928437A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06308054A (en) * | 1993-04-28 | 1994-11-04 | Omron Corp | Defect image reproducing device |
| CN101510085A (en) * | 2009-03-13 | 2009-08-19 | 东华大学 | Fluoroplastic film defect on-line detecting control system based on process control machine |
| CN201754149U (en) * | 2010-07-02 | 2011-03-02 | 盛泰光电股份有限公司 | Double-side detecting device |
| CN201811923U (en) * | 2010-09-02 | 2011-04-27 | 陈晓滨 | Double-side printed matter inspection machine |
| CN102284431A (en) * | 2011-04-28 | 2011-12-21 | 河南科技大学 | On-line detection grading device for lithium ion battery pole piece and method thereof |
| CN202362253U (en) * | 2011-11-28 | 2012-08-01 | 深圳市鹰眼在线电子科技有限公司 | On-line visual detection system for coating quality of battery pole piece |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516987A (en) * | 2013-10-09 | 2014-01-15 | 哈尔滨工程大学 | High-speed image collection and real-time storage system |
| CN104660999A (en) * | 2015-03-13 | 2015-05-27 | 河南科技大学 | Method and device for acquiring standard images of non-uniform velocity moving objects |
| CN104660999B (en) * | 2015-03-13 | 2017-07-07 | 河南科技大学 | A kind of method and device that IMAQ is standardized to non-uniform movement object |
| CN114801100A (en) * | 2022-04-26 | 2022-07-29 | 健大电业制品（昆山）有限公司 | Injection molding sorting unit |
| CN114801100B (en) * | 2022-04-26 | 2023-04-07 | 健大电业制品（昆山）有限公司 | Injection molding sorting unit |
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Application publication date: 20130213 |