KR101184946B1 - Apparatus for detecting of steel plate and control method thereof - Google Patents
Apparatus for detecting of steel plate and control method thereof Download PDFInfo
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- KR101184946B1 KR101184946B1 KR20100136331A KR20100136331A KR101184946B1 KR 101184946 B1 KR101184946 B1 KR 101184946B1 KR 20100136331 A KR20100136331 A KR 20100136331A KR 20100136331 A KR20100136331 A KR 20100136331A KR 101184946 B1 KR101184946 B1 KR 101184946B1
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- metal plate
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Abstract
Disclosed are a measuring apparatus for a metal sheet and a control method thereof. The disclosed measuring apparatus for a metal sheet includes: a first measuring unit for measuring an image of a metal plate being moved by a hot calibrator, a second measuring unit for measuring an image of a metal plate coming out of the hot calibrator, and a connection with the first and second measuring units And a control unit which is connected to an image filtering unit and an image filtering unit to receive an image signal of the first and second measuring units and compares the movement of the metal plate and similarity between the extracted image pattern and the reference image pattern. It is characterized by including.
Description
The present invention relates to a measuring apparatus for a metal plate and a control method thereof, and more particularly, to a measuring apparatus for a metal plate and a control method thereof capable of preventing equipment accidents by measuring the presence or absence of a metal plate and a calibration state.
In general, thick plate rolling is a slab (SLAB) of the raw material is heated to 1250 ℃ to 1300 ℃ in a heating furnace, and then rolled to a predetermined thickness and width in a rolling mill to roll into a metal sheet.
Since the rolled metal sheet is formed in a wave-shaped shape, it is transferred to a hot straightener to straighten it.
The metal sheet is flattened while passing through the hot calibrator, and then transferred to the next process.
The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.
It is an object of the present invention to provide a measuring apparatus for a metal sheet and a control method thereof capable of preventing equipment accidents by measuring the presence or absence of a metal sheet passing through a hot straightener and a calibration state.
The measuring apparatus for a metal sheet according to the present invention includes: a first measuring unit for measuring a metal plate moved by a hot calibrator, a second measuring unit for measuring a metal plate coming out of the hot calibrator, and a first measuring unit and a second measuring unit, An image filtering unit for extracting an image pattern by receiving image signals of the first and second measuring units and a control unit connected to the image filtering unit to determine whether the metal plate is normally moved and whether the extracted image pattern is similar to the reference image pattern. Include.
The first measuring unit and the second measuring unit preferably include a camera having a charge coupled device (CCD).
In addition, it is preferable that the first measurement unit and the second measurement unit photograph the side surfaces of the metal sheet.
In addition, the image filtering unit, in the image signal transmitted from the first and second measurement units, the inner and outer images of the metal plate having the image data larger than the set threshold is distinguished by the first color, the metal having the image data smaller than the set threshold It is preferable to distinguish the outside image of the plate by the second color.
In addition, the present invention, it is preferable to further include an abnormal signal generating unit connected to the control unit for warning of the movement failure and flatness failure of the metal plate.
The control method of the measuring apparatus for a metal sheet according to the present invention includes: a first position measuring step of measuring a metal sheet being moved by a hot calibrator in a first measuring unit, and a second measuring part measuring a metal sheet from a hot calibrator in a second measuring unit. A normal movement determination step of determining whether the metal plate is normally moved by comparing the interval between the two position measuring step and the image signal measured by the first measuring unit and the image signal measured by the second measuring unit; And an image filtering step of extracting an image pattern from the image filtering unit receiving the image signal of the second measuring unit, and an image pattern comparison step of determining whether or not the extracted image pattern is similar to the reference image pattern stored in the control unit.
The control method of the measuring apparatus for a metal sheet according to the present invention includes: a first position measuring step of measuring a metal sheet being moved by a hot calibrator in a first measuring unit, and a second measuring part measuring a metal sheet from a hot calibrator in a second measuring unit. A normal movement determination step of determining whether the metal plate is normally moved by comparing the two-position measuring step with the interval between the image signal measured by the first measurement unit and the image signal measured by the second measurement unit, and the first measurement The first image measuring step of measuring the side of the metal plate in the unit, the second image measuring step of measuring the side of the metal plate in the second measuring unit, and the image filtering unit receiving the image signal of the first and second measuring unit An image filtering step of extracting an image pattern and an image pattern comparison step of determining whether or not the similarity between the extracted image pattern and the reference image pattern stored in the control unit.
In the image pattern comparison step, it is preferable that the degree of similarity between the extracted image pattern and the reference image pattern stored in the controller is expressed as a percentage.
In the image pattern comparison step, when the percentage indicating the degree of similarity between the extracted image pattern and the reference image pattern stored in the controller is within a range of 80% to 100%, it is preferable to determine the flatness of the metal plate as normal.
In addition, the present invention preferably further comprises an abnormal signal generating step of warning of the movement failure and flatness of the metal plate in the abnormal signal generating unit connected to the control unit.
In the measuring apparatus and control method for a metal sheet according to the present invention, the first measuring unit and the second measuring unit to measure the metal plate to generate an image signal, and receives the image signal to transfer the metal plate in the control unit presence and correction By measuring whether or not the normal state of the signal through the abnormal signal generating unit, it is possible to improve workability and prevent equipment accidents.
1 is a front view schematically showing a state in which a measuring apparatus for a metal sheet according to an embodiment of the present invention is installed.
2 is a block diagram of a measuring device for a metal sheet according to an embodiment of the present invention.
3 is a schematic diagram schematically illustrating an image pattern extracted by an image filtering unit according to an embodiment of the present invention.
4 is a flowchart illustrating a control method of the measuring apparatus for a metal sheet according to an embodiment of the present invention.
5 is a flowchart illustrating a control method of the measuring apparatus for a metal sheet according to another embodiment of the present invention.
Hereinafter, with reference to the accompanying drawings will be described an embodiment of a measuring device for a metal plate and a control method according to the present invention. For convenience of explanation, the measuring device for a metal plate installed in the hot calibrator will be described as an example. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.
1 is a front view schematically showing a state in which a measuring device for a metal sheet according to an embodiment of the present invention is installed, Figure 2 is a block diagram of a measuring device for a metal sheet according to an embodiment of the present invention, Figure 3 A schematic diagram schematically showing an image pattern extracted by an image filtering unit according to an embodiment of the present invention.
As shown in Fig. 1 and Fig. 2, a
A plurality of work rolls 3 for pressurizing the upper side and the lower side of the
The
Measuring
The
The
Since the
The
The
The
As shown in FIG. 2 and FIG. 3, the
The
If the
The
Hereinafter, with reference to the accompanying drawings will be described in detail a control method of the
4 is a flowchart illustrating a control method of the measuring apparatus for a metal sheet according to an embodiment of the present invention.
As shown in FIGS. 1 to 4, in the control method of the
The
And a second position measuring step of measuring the
After the flattening operation is completed in the
The position where the
The normal movement determination in which the
The video signal of the
The
For example, when the set error range is 0.5 seconds and the moving interval of the
If it is out of the movement error range of the
In the first position measuring step S10 and the second position measuring step S20, the portion of the
The first measuring
In the normal movement determination step, since only the image work that can determine only the movement of the
The
When it is determined that the movement of the
The
The
The
The
The outer image of the
In one embodiment of the present invention, black may be used as the
The
The
The reference image pattern stored in the
The reference image pattern is compared with the extracted image pattern, and the degree of similarity between the extracted image pattern and the reference image pattern stored in the
When the percentage indicating the degree of similarity between the extracted image pattern and the reference image pattern stored in the
The abnormal
The abnormal
When the flatness defect of the
The planarization work of the
Hereinafter, with reference to the accompanying drawings will be described in detail a control method of the measuring
5 is a flowchart illustrating a control method of the measuring apparatus for a metal sheet according to another embodiment of the present invention.
As shown in Figs. 1 to 3 and 5, the control method of the measuring
The
And a second position measuring step of measuring the
After the flattening operation is completed in the
The position where the
The normal movement determination in which the
The video signal of the
The
If it is out of the movement error range of the
In the first position measuring step S110 and the second position measuring step S120, the portion of the
The first measuring
And an image filtering step of extracting an image pattern from the
The first and
The
The outer image of the
In one embodiment of the present invention, black may be used as the
The
The
The reference image pattern stored in the
The reference image pattern is compared with the extracted image pattern, and the degree of similarity between the extracted image pattern and the reference image pattern stored in the
When the percentage indicating the degree of similarity between the extracted image pattern and the reference image pattern stored in the
The abnormal
The abnormal
When the flatness defect of the
The planarization work of the
According to the configuration as described above, the metal
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.
In addition, the measuring device for a metal plate installed in the hot-calibrator has been described as an example, but this is merely exemplary, the measuring device for a metal plate according to the present invention can also be used to measure the metal plate moved to another device.
Accordingly, the true scope of protection of the present invention should be defined by the claims.
1: hot calibrator 3: work roll
5: transfer roller 7: sheet metal
10: measuring device for metal sheet
20: first measuring unit 22: second measuring unit
30: image filtering unit 32: first color
34: second color 40: control part
50: abnormal signal generator
Claims (10)
A second measuring unit measuring the metal sheet coming out of the hot calibrator;
An image filtering unit connected to the first and second measuring units and extracting an image pattern by receiving an image signal of the first and second measuring units; And
And a control unit connected to the image filtering unit to determine whether the metal plate is normally moved and whether the extracted image pattern is similar to the reference image pattern.
Measuring device for a metal sheet comprising a camera having a CCD (Charge Coupled Device).
Measuring device for a metal sheet, characterized in that to photograph the side of the metal sheet.
In the image signal transmitted from the first and second measuring units, the inner and outer images of the metal plate having the image data larger than the set threshold are distinguished by the first color and have the image data smaller than the set threshold. Measuring device for a metal sheet, characterized in that the outer image is divided into a second color.
It is connected to the control unit, measuring device for a metal sheet further comprises an abnormal signal generating unit for warning the poor movement and flatness of the metal plate.
A second position measuring step of measuring the metal sheet coming out of the hot calibrator in a second measuring unit;
A normal movement determining step of comparing, by the controller, whether the metal plate is normally moved by comparing the interval between the image signal measured by the first measuring unit and the image signal measured by the second measuring unit;
An image filtering step of extracting an image pattern from an image filtering unit receiving the image signals of the first and second measuring units; And
And an image pattern comparison step of determining whether the extracted image pattern is similar to the reference image pattern stored in the controller.
A second position measuring step of measuring the metal sheet coming out of the hot calibrator in a second measuring unit;
A normal movement determining step of comparing, by the controller, whether the metal plate is normally moved by comparing the interval between the image signal measured by the first measuring unit and the image signal measured by the second measuring unit;
A first image measuring step of measuring side surfaces of the metal plate member in the first measuring unit;
A second image measuring step of measuring side surfaces of the metal plate member in the second measuring unit;
An image filtering step of extracting an image pattern from an image filtering unit receiving the image signals of the first and second measuring units; And
And an image pattern comparison step of determining whether the extracted image pattern is similar to the reference image pattern stored in the controller.
The control method of the measuring device for a metal sheet, characterized in that the degree of similarity between the extracted image pattern and the reference image pattern stored in the control unit.
When the percentage indicating the degree of similarity between the extracted image pattern and the reference image pattern stored in the controller is within the range of 80% to 100%, the flatness of the metal plate is determined to be normal. .
The control method of the measuring device for a metal plate, characterized in that the abnormal signal generating unit connected to the control unit, further comprising the step of generating an abnormal signal to warn the movement failure and flatness failure of the metal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20100136331A KR101184946B1 (en) | 2010-12-28 | 2010-12-28 | Apparatus for detecting of steel plate and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20100136331A KR101184946B1 (en) | 2010-12-28 | 2010-12-28 | Apparatus for detecting of steel plate and control method thereof |
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| Publication Number | Publication Date |
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| KR20120074480A KR20120074480A (en) | 2012-07-06 |
| KR101184946B1 true KR101184946B1 (en) | 2012-10-02 |
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| KR20100136331A KR101184946B1 (en) | 2010-12-28 | 2010-12-28 | Apparatus for detecting of steel plate and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101938828B1 (en) * | 2017-03-10 | 2019-01-16 | 대한네트웍스 주식회사 | Method and apparatus for controlling steel bar straightener |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009222482A (en) | 2008-03-14 | 2009-10-01 | Aida Engineering Co Ltd | Shape measuring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009222482A (en) | 2008-03-14 | 2009-10-01 | Aida Engineering Co Ltd | Shape measuring system |
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