CN103940379A - Method for measuring flatness of glass based on distorting mirror principle - Google Patents
Method for measuring flatness of glass based on distorting mirror principle Download PDFInfo
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- CN103940379A CN103940379A CN201410123392.0A CN201410123392A CN103940379A CN 103940379 A CN103940379 A CN 103940379A CN 201410123392 A CN201410123392 A CN 201410123392A CN 103940379 A CN103940379 A CN 103940379A
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Abstract
The invention relates to the technical field of photoelectric detection, in particular to a method for measuring the flatness of glass based on the distorting mirror principle. According to the method, an image capturer is used for obtaining a pattern reflected by a measured plane and located on a target, then a planar image is formed and transmitted to a computer, and the pattern size or distance of the planar image is measured to obtain a practical measurement value; the practical measurement value and a corresponding standard value of the pattern reflected by the measured plane, located on the target and obtained by the capturer are compared, finally the curvature of the measured plane is worked out through difference value conversion, and namely, the flatness of the glass is measured. According to the method, the curvature of the measured plane is worked out through difference value conversion by utilizing a computer, and namely, the flatness of the glass is measured according to the principle that formed images are magnified or contracted due to convex and concave differences of the measured plane. The method is relatively simple to implement and small in error and can improve the detection efficiency and accuracy.
Description
Technical field
The present invention relates to photoelectric detection technology field, especially relate to the flatness detection technique field of flat glass.
Background technology
At present, the flatness of large flat glass detects and adopts the image being suspended on crossbeam to seize device (as CCD detecting head), on large flat glass tested surface, obtain focus point, and compare with the distance height of the large relative crossbeam of flat glass reference field with the distance height of the relative crossbeam of focus point, thereby acquisition relevant parameter, the flatness that obtains large flat glass detects.This method existence operation inconvenience, and affected greatly by machine error, very easily occur that benchmark changes and impact detection.
Summary of the invention
The object of the invention is to overcome the defect of prior art, a kind of method that provides distorting mirror principle to measure glass planar degree, easily implements, and error is little.
For achieving the above object, the present invention adopts following technical scheme:
A kind of distorting mirror principle is measured the method for glass planar degree, the method is to utilize image to seize the pattern on the target that device obtains tested plane reflection, form flat image and be transported in computer, then measuring pattern dimension or the spacing on this flat image, obtaining actual measured value; Seize standard value comparison corresponding to pattern gained on the target that device obtains standard flat reflection with this actual measured value with image, finally utilize difference to converse the curvature in tested plane, measure the flatness of glass.
Pattern on described target is the round dot being equally spaced.
In such scheme, job step is as follows: determine before this position and the angle that image is seized device, tested plane and target; Then standard flat is put to the position of tested plane, image is seized image corresponding to pattern gained on the target that device obtains standard flat reflection, in input computer, processes and measure the pattern standard value on image; Again tested plane is replaced and put, fixing by tool location, image is seized the pattern on the target that device obtains tested plane reflection subsequently, forms flat image and is also transported in computer, obtains actual measured value; Finally compare with standard value with actual measured value, computer converses the curvature in tested plane by comparison difference, measures the flatness of glass.
The present invention utilizes the different imagings of tested plane convex-concave to be exaggerated or reduced principle, utilizes thus computer expert to cross comparison difference and converses the curvature in tested plane, measures the flatness of glass.Implement relatively simply, error is little, promotes detection efficiency and precision.
brief description of the drawings:
Accompanying drawing 1 is that one of the present invention is implemented schematic diagram;
Accompanying drawing 2 is its two enforcement schematic diagram of the present invention;
The target image schematic diagram that accompanying drawing 3 obtains by standard flat for the present invention;
Accompanying drawing 4 obtains the target image schematic diagram being exaggerated for the present invention;
The target image schematic diagram that accompanying drawing 5 is reduced for the present invention obtains.
embodiment:
Below in conjunction with accompanying drawing, the present invention is further described:
Consult shown in Fig. 1 ~ 5, the present invention is about a kind of method of distorting mirror principle measurement glass planar degree, the method is to utilize image to seize device 1 to obtain the pattern 31 on the target 3 that tested plane 2 reflects, form flat image and be transported in computer, measure again pattern 31 sizes or spacing on this flat image, obtain actual measured value; Seize standard value comparison corresponding to pattern 31 gained on the target 3 that device 1 obtains standard flat reflection with this actual measured value with image, finally utilize difference to converse the curvature in tested plane 2, measure the flatness of glass.Implement relatively simply, error is little, promotes detection efficiency and precision.
Shown in Fig. 1 ~ 5, in the present embodiment, the round dot of the pattern 31 on described target 3 for being equally spaced, matrix form, is beneficial to detection, and visual effect is remarkable, and the present invention is not limited to this pattern form certainly, and other visible pattern also should be protection scope of the present invention.
Shown in Fig. 1 ~ 5, the method job step is as follows: determine before this position and the angle that image is seized device 1, tested plane 2 and target 3; Then standard flat is put to the position of tested plane 2, image is seized image corresponding to pattern 31 gained on the target 3 that device 1 obtains standard flat reflection, in input computer, processes and measure pattern 31 standard values on image; Again tested plane 2 is replaced and put, fixing by tool location, image is seized device 1 and is obtained the pattern 31 on the target 3 that tested plane 2 reflects subsequently, forms flat image and is also transported in computer, obtains actual measured value; Finally compare with standard value with actual measured value, computer converses the curvature in tested plane 2 by comparison difference, measures the flatness of glass.Detection reference is constant, affected by machine error little, and detection efficiency and precision are high.In Fig. 1, pattern 31 on target 3 directly reflexes to image through tested plane 2 and seizes in device 1, certainly also can be as in Fig. 2, pattern 31 on target 3 is transmitted in tested plane 2 through one or more catoptrons 4, reflexing to image by tested plane 2 again seizes in device 1, this structure can relative decrease space length, the layout of optimizing structure.
Detection method precision provided by the invention is high, and speed is fast, and technique is simple, the quality that is conducive to promote production process and ensures end product.
Certainly; in conjunction with embodiment, the present invention is described in detail above; be only explanation technical conceive of the present invention and feature; its object is to allow person skilled in the art understand content of the present invention and implemented; can not limit protection scope of the present invention with this; therefore all equivalences that Spirit Essence does according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (3)
1. the method for a distorting mirror principle measurement glass planar degree, it is characterized in that: the method is to utilize image to seize the pattern (31) on the target (3) that device (1) obtains tested plane (2) reflection, form flat image and be transported in computer, measure again pattern (31) size or spacing on this flat image, obtain actual measured value; Seize standard value comparison corresponding to pattern (31) gained on the target (3) that device (1) obtains standard flat reflection with this actual measured value with image, finally utilize difference to converse the curvature in tested plane (2), measure the flatness of glass.
2. a kind of distorting mirror principle according to claim 1 is measured the method for glass planar degree, it is characterized in that: the round dot of the pattern (31) on described target (3) for being equally spaced.
3. a kind of distorting mirror principle according to claim 1 is measured the method for glass planar degree, it is characterized in that: the method job step is as follows: determine before this position and the angle that image is seized device (1), tested plane (2) and target (3); Then standard flat is put to the position of tested plane (2), image is seized image corresponding to pattern (31) gained on the target (3) that device (1) obtains standard flat reflection, in input computer, processes and measure pattern (31) standard value on image; Again tested plane (2) is replaced and put, fixing by tool location, image is seized the pattern (31) on the target (3) that device (1) obtains tested plane (2) reflection subsequently, forms flat image and is also transported in computer, obtains actual measured value; Finally compare with standard value with actual measured value, computer converses the curvature in tested plane (2) by comparison difference, measures the flatness of glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410123392.0A CN103940379A (en) | 2014-03-31 | 2014-03-31 | Method for measuring flatness of glass based on distorting mirror principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410123392.0A CN103940379A (en) | 2014-03-31 | 2014-03-31 | Method for measuring flatness of glass based on distorting mirror principle |
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| CN103940379A true CN103940379A (en) | 2014-07-23 |
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| CN201410123392.0A Pending CN103940379A (en) | 2014-03-31 | 2014-03-31 | Method for measuring flatness of glass based on distorting mirror principle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251687A (en) * | 2014-10-11 | 2014-12-31 | 盐城工学院 | Part surface evenness detection method based on mirror image processing |
| CN104330061A (en) * | 2014-11-13 | 2015-02-04 | 山东温声玻璃有限公司 | Device for detecting glass flatness |
| CN105241400A (en) * | 2015-11-09 | 2016-01-13 | 福建农林大学 | Glass flatness detection method and device |
| CN107203994A (en) * | 2017-06-08 | 2017-09-26 | 广东嘉铭智能科技有限公司 | A kind of method and apparatus of globoidal glass curvature measuring |
| CN113720282A (en) * | 2021-08-25 | 2021-11-30 | 广东奥普特科技股份有限公司 | Method and device for measuring flatness of tab |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251687A (en) * | 2014-10-11 | 2014-12-31 | 盐城工学院 | Part surface evenness detection method based on mirror image processing |
| CN104251687B (en) * | 2014-10-11 | 2017-05-03 | 盐城工学院 | Part surface evenness detection method based on mirror image processing |
| CN104330061A (en) * | 2014-11-13 | 2015-02-04 | 山东温声玻璃有限公司 | Device for detecting glass flatness |
| CN105241400A (en) * | 2015-11-09 | 2016-01-13 | 福建农林大学 | Glass flatness detection method and device |
| CN107203994A (en) * | 2017-06-08 | 2017-09-26 | 广东嘉铭智能科技有限公司 | A kind of method and apparatus of globoidal glass curvature measuring |
| CN113720282A (en) * | 2021-08-25 | 2021-11-30 | 广东奥普特科技股份有限公司 | Method and device for measuring flatness of tab |
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Application publication date: 20140723 |