CN102944561B - A kind of appearance detecting method of matrix form gadget and device - Google Patents
A kind of appearance detecting method of matrix form gadget and device Download PDFInfo
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- CN102944561B CN102944561B CN201210465505.6A CN201210465505A CN102944561B CN 102944561 B CN102944561 B CN 102944561B CN 201210465505 A CN201210465505 A CN 201210465505A CN 102944561 B CN102944561 B CN 102944561B
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Abstract
The present invention relates to a kind of appearance detecting method and device of matrix form gadget, its device comprises motion platform and industrial camera, and the magnified sweep assembly be made up of galvanometer motor and the focus lamp of F-Theta lens, band reflecting optics; F-Theta lens are fixedly mounted on directly over motion platform; Galvanometer motor, focus lamp and industrial camera are arranged on a surface level, are arranged in order according to vertical order; Galvanometer motor is fixedly mounted on the top of F-Theta lens, and its reflecting optics is located at the inclination angle also and in angle variable between surface level directly over F-Theta central line of lens; The center of the center of reflecting optics, the center of focus lamp and industrial camera point-blank.Successively by extracting image, amplifying camera and detecting the detection of operation realization to element each in matrix form gadget.Detection speed is fast, and accuracy rate is high, and installation cost is low, is very applicable to commercial Application.
Description
Technical field
The present invention relates to outward appearance detection technique, specifically relate to a kind of appearance detecting method and device of matrix form gadget.
Background technology
At present in industrial processes, the device more and more miniaturization of producing, the product produced like this, the skew producing printing position is easy to when the information such as printing mark or model, or cause product appearance defectiveness in the fabrication process, manufacturer flows out factory to prevent the defective defective products of outward appearance, must set up product appearance and detect department, carry out the defective defective products of special detection outward appearance.The means of the defect of current detection miniature workpiece outward appearance have by artificial visually examine and camera video detection two schemes.
Artificial visually examine is little for plant capacity, the workpiece that product size is greater than 10 millimeters is a kind of effective and economic solution, but produced to the factory exceeding thousands of products every day, the detection workman that the product produced along with every day needs more is more, causes the significantly lifting of production cost and handling cost like this.
Camera video detects for automated production amount large, and any products size is all reliable and economic scheme.General is all move workpiece for measurement to camera position by servo or linear electric motors, waits for that vibrations carry out candid photograph comparison after stable.If the rectangular piece of a 70x70mm size there is the rectangular piece of the 2x1 mm in size of 35 row 70 row.Current camera video detection scheme has several as follows:
1) adopt viewing area for being greater than 2x2 millimeter, resolution be the camera of 1024x 768 to show each workpiece, make camera move to above each workpiece by the motion platform of xy, each image capturing a workpiece.The advantage of this scheme is that precision is high, reaches the precision of each pixel 0.0019-0.0026 millimeter.Shortcoming is that positioning time is oversize, and efficiency is too slow, and average each Workpiece fixing time needs 300-1000ms.If the workpiece that equipment production in one day 24 hours 1000 is such, one has 1000x35x70=2450000 small workpiece, detect these small workpiece and need 204 hours, that is about 9 checkout equipments of production equipment needs of a rectangle gadget are next supporting could meet production requirement, and this is a huge burden for manufacturer.
2) adopt viewing area for being greater than 70 millimeters, resolution be the line-scan digital camera of 2048 to show each workpiece, make camera move to often above row workpiece by motion platform, each image capturing a row workpiece, is partitioned into the image of each workpiece by software.The advantage of this scheme is that speed is fast.Shortcoming is that precision is too low, can only accomplish the precision of each pixel 0.03 millimeter, if the line-scan digital camera that camera employing resolution is 4096 just can only reach the precision of each pixel 0.015 millimeter, if adopt more high-resolution line-scan digital camera cost just too high again.
Therefore the situation that domestic production producer is so is at present all generally that artificial visually examine detects, and join more than ten workman by an equipment and carry out manual detection, such result is that efficiency is extremely low, and error rate is very high and cost is also high.
3) adopt viewing area for being greater than 70 millimeters, resolution be the area array cameras of more than 8192 to show whole workpiece, also must use special high-quality camera lens to make the clear picture in whole region.Such technical scheme once just can capture the image of whole workpiece, speed is also than comparatively fast, precision can reach the precision of each pixel 0.0075 millimeter, but shortcoming is that camera and camera lens are very expensive, and the bright very high practical application of requirement of image imaging contrast is very unrealistic.
Summary of the invention
The object of this invention is to provide the appearance detecting method of the matrix form gadget that a kind of accuracy is high, detection efficiency is high.
Another object of the present invention is to provide a kind of appearance delection device applying the matrix form gadget that said method carries out detecting.
For reaching above-mentioned purpose, present invention employs following technical scheme:
An appearance detecting method for matrix form gadget, carries out shot detection again after the image of scioptics scanning amplification matrix formula gadget, comprising:
Extract image operation, extract with F-Theta lens and once amplify the image of workpiece to be detected;
Amplifying camera operation, by the reflecting optics of galvanometer motor by after carrying out secondary amplification in the image transmitting of workpiece to be detected to focus lamp, then makes a video recording in the sensor being sent to industrial camera;
Detect operation, the outward appearance that the workpiece image of contrast shooting carries out specifying detects.
The present invention also realizes further by following scheme:
The appearance detecting method of described matrix form gadget, wherein, described F-Theta lens extract image by row, each workpiece image extracted in a column matrix formula gadget.
The appearance detecting method of described matrix form gadget, wherein, described matrix form gadget is arranged in a linear motion platform, by linear motion platform, the first row of matrix form gadget is moved to immediately below F-Theta lens, each workpiece that the angle of then rotating galvanometer motor is extracted in first row successively detects, after having detected first row, then move material folding motion platform and carry out the detection of following workpiece until complete successively.
The appearance detecting method of described matrix form gadget, wherein, described detection operation is that the image contrasting each small workpiece by image processing software detects workpiece outward appearance whether existing defects.
A device for the outward appearance detection of matrix form gadget, comprises motion platform and industrial camera, and it also comprises the magnified sweep assembly be made up of the galvanometer motor of F-Theta lens, band reflecting optics and focus lamp; F-Theta lens are fixedly mounted on directly over motion platform; Galvanometer motor, focus lamp and industrial camera are arranged on a surface level, are arranged in order according to vertical order; Galvanometer motor is fixedly mounted on the top of F-Theta lens, and its reflecting optics is located at the inclination angle also and in angle variable between surface level directly over F-Theta central line of lens; The center of the center of reflecting optics, the center of focus lamp and industrial camera point-blank.
The appearance delection device of described matrix form gadget, wherein, described industrial camera connects an image processing part, image processing part is by the image after the amplification that obtains in industrial camera sensor, whether qualified criterion with reference to regulation contrasts, and judges that whether the gadget outward appearance detected is qualified.
The appearance delection device of described matrix form gadget, wherein, described motion platform is arranged on side to on the straight line slide unit of linear electric motors, linear electric motors brought into motion platform linearly slide unit straight ahead.
The appearance delection device of described matrix form gadget, wherein, described straight line slide unit is fixedly mounted on one and is fixed on the board on ground; The mounting bracket of fixing magnified sweep assembly and industrial camera is installed above the side of slide unit.
The appearance delection device of described matrix form gadget, wherein, the pixel of described industrial camera is more than or equal to 1,000,000.
During concrete use, user can (manually can place needing the matrix form gadget detected to be placed on above material folding motion platform, also can automatically place).By the moving handle workpiece movable of the linear electric motors below to F-Theta lens, 1st row workpiece centre of matrix form gadget to be detected is alignd with the center of F-Theta lens, by the reflection of the reflecting optics of galvanometer motor, can matrix form gadget inside the image sensor being transferred to industrial camera one by one of all workpiece in prostatitis, the image of transmission, successively after F-Theta lens and focus lamp two arrangement of mirrors sheet amplify, can make Nonlinear magnify 10-50 times that observes.The image that can contrast each small workpiece by image processing software like this detects workpiece outward appearance whether defectiveness.After having detected this row workpiece current, linear electric motors have moved material folding motion platform forward again, continue to detect next column below center next column being moved to F-Theta lens, and such cycle detection is complete for all row inspections.
Owing to have employed above technical scheme, the appearance detecting method of matrix form gadget of the present invention and device are by changing the direction of light with the galvanometer motor of reflecting optics, thus each workpiece in each being arranged all is transferred on the sensor of industrial camera.Because the locating speed of galvanometer motor is up to 70000mm/s.Thus the positioning time achieving each workpiece is less than 10ms, substantially increase work efficiency.And combined by F-Theta lens and focus lamp, realize twice amplification, thus by the Nonlinear magnify 10-50 of small workpiece doubly, effectively improve the precision of detection, accuracy of detection is high, and error rate is low.
The present invention is owing to have employed the magnified sweep assembly be made up of the galvanometer motor of F-Theta lens, band reflecting optics and focus lamp, thus without the need to using the industrial camera that resolution is too high can carry out outward appearance detection effectively, the pixel of camera can realize clear effective detection about 1,000,000, and cost is lower.
Accompanying drawing explanation
Fig. 1 is the structural representation of the appearance delection device of matrix form gadget of the present invention.
Embodiment
Embodiment 1
Shown in Figure 1, a kind of appearance delection device of matrix form gadget, comprises motion platform 5, the magnified sweep assembly be made up of galvanometer motor 3 and the focus lamp 2 of F-Theta lens 4, band reflecting optics and industrial camera 1.Motion platform 5 is slidably mounted on a side straps to be had on the straight line slide unit of linear electric motors, and straight line slide unit is fixedly mounted on a board fixed on the ground.Board is also installed with the support of an installation magnified sweep assembly and industrial camera.Support is fixed on the side of straight line slide unit.Support is the class T-type structure be made up of a transverse slat and a riser, transverse slat is positioned at directly over slide unit, it is offered the mounting hole facing slide unit, the part that riser is positioned at transverse slat top also offers mounting hole, being centrally located on a vertical plane of the mounting hole on riser and transverse slat mounting hole.F-Theta lens 4 are fixedly mounted in the mounting hole of transverse slat.Galvanometer motor 3, focus lamp 2 and industrial camera 1 are arranged on a surface level, are arranged in order according to vertical order.Galvanometer motor 3 is fixedly mounted on transverse slat, is positioned at the top of F-Theta lens 4, its reflecting optics to be located at directly over F-Theta lens 4 center line and and inclination angle angularly adjustable between surface level; Focus lamp 2 is fixedly mounted on riser mounting hole, is located at the top of transverse slat, and industrial camera is fixedly mounted on the back side of riser.The center of the center of reflecting optics, the center of focus lamp 2 and industrial camera 2 point-blank.
Further, industrial camera 1 can connect an image processing part, and image processing part is by the image after the amplification that obtains in industrial camera sensor, and the whether qualified criterion with reference to regulation contrasts, and judges that whether the gadget outward appearance detected is qualified.
Industrial camera of the present invention, focus lamp, galvanometer motor and F-Theta lens all can adopt existing commercially available prod.As industrial camera can adopt the industrial camera about any one mega pixel, bestly adopt micro-formula MVC1000 camera, resolution 1024x768.The focus lamp that focus lamp 2 can adopt Nanjing wavelength company to produce, its operation wavelength is 640nm, and focal length is 250mm.6230 galvanometer motors of GO28 or the CTI company that galvanometer motor 3 can adopt gold orange scarabaeidae skill to produce.The operation wavelength that F-Theta lens 4 can adopt Nanjing wavelength company to produce is 1064nm, and sweep limit is the F-Theta lens of 100mm.
Embodiment 2
An appearance detecting method for matrix form gadget, by carrying out shot detection again after the image of multiple lens scanning amplification matrix formula gadget, comprising:
Extract image operation, extract with F-Theta lens and once amplify the image of workpiece to be detected;
Amplifying camera operation, by the reflecting optics of galvanometer motor by after carrying out secondary amplification in the image transmitting of workpiece to be detected to focus lamp, then makes a video recording in the sensor being sent to industrial camera;
Detect operation, the outward appearance that the workpiece image of contrast shooting carries out specifying detects.
During concrete use, F-Theta lens extract image by row, each workpiece image extracted in a column matrix formula gadget.Matrix form gadget can be arranged in the motion platform 5 described in embodiment 1, by linear electric motors 6, the first row of the matrix form gadget in motion platform 5 is moved to immediately below F-Theta lens along slide unit, each workpiece that the angle of then rotating galvanometer motor 3 is extracted in first row successively detects, after having detected first row, then move material folding motion platform and carry out the detection of following workpiece until complete successively.
Detecting the best in operation is that the image contrasting each small workpiece by an image processing software detects workpiece outward appearance whether existing defects.This image processing software can adopt MIL or SAPERA image processing software.
The above, be only preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Any equivalent variation that all those skilled in the art utilize technical scheme of the present invention to make above-described embodiment, modification or differentiation etc., all still belong in the scope of technical solution of the present invention.
Claims (9)
1. an appearance delection device for matrix form gadget, comprises motion platform and industrial camera, it is characterized in that:
Also comprise the magnified sweep assembly be made up of the galvanometer motor of F-Theta lens, band reflecting optics and focus lamp; F-Theta lens are fixedly mounted on directly over motion platform; Galvanometer motor, focus lamp and industrial camera are arranged on a surface level, are arranged in order according to vertical order; Galvanometer motor is fixedly mounted on the top of F-Theta lens, and its reflecting optics is located at the inclination angle also and in angle variable between surface level directly over F-Theta central line of lens; The center of the center of reflecting optics, the center of focus lamp and industrial camera point-blank.
2. the appearance delection device of matrix form gadget according to claim 1, is characterized in that:
Described industrial camera connects an image processing part, and image processing part is by the image after the amplification that obtains in industrial camera sensor, and the whether qualified criterion with reference to regulation contrasts, and judges that whether the gadget outward appearance detected is qualified.
3. the appearance delection device of matrix form gadget according to claim 1, is characterized in that:
Described motion platform is arranged on side to on the straight line slide unit of linear electric motors, linear electric motors brought into motion platform linearly slide unit straight ahead.
4. the appearance delection device of matrix form gadget according to claim 3, is characterized in that:
Described straight line slide unit is fixedly mounted on one and is fixed on the board on ground; The mounting bracket of fixing magnified sweep assembly and industrial camera is installed above the side of slide unit.
5., according to the appearance delection device of described matrix form gadget arbitrary in claim 1-3, it is characterized in that:
The pixel of described industrial camera is more than or equal to 1,000,000.
6. an appearance detecting method for matrix form gadget, adopts the appearance delection device of matrix form gadget according to claim 1 to detect, and carries out shot detection again, it is characterized in that after the image of scioptics scanning amplification matrix formula gadget:
Extract image operation, extract with F-Theta lens and once amplify the image of workpiece to be detected;
Amplifying camera operation, by the reflecting optics of galvanometer motor by after carrying out secondary amplification in the image transmitting of workpiece to be detected to focus lamp, then makes a video recording in the sensor being sent to industrial camera;
Detect operation, the outward appearance that the workpiece image of contrast shooting carries out specifying detects.
7. the appearance detecting method of matrix form gadget according to claim 6, is characterized in that:
Described F-Theta lens extract image by row, each workpiece image extracted in a column matrix formula gadget.
8. the appearance detecting method of matrix form gadget according to claim 7, is characterized in that:
Described matrix form gadget is arranged in a linear motion platform, by linear motion platform, the first row of matrix form gadget is moved to immediately below F-Theta lens, each workpiece that the angle of then rotating galvanometer motor is extracted in first row successively detects, after having detected first row, then move material folding motion platform and carry out the detection of following workpiece until complete successively.
9., according to the appearance detecting method of described matrix form gadget arbitrary in claim 6-8, it is characterized in that:
Described detection operation is that the image contrasting each small workpiece by image processing software detects workpiece outward appearance whether existing defects.
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| CN201210465505.6A CN102944561B (en) | 2012-11-16 | 2012-11-16 | A kind of appearance detecting method of matrix form gadget and device |
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| CN105548217B (en) * | 2016-02-23 | 2018-12-04 | 信阳舜宇光学有限公司 | The appearance delection device and detection method of flat glass coated article |
| CN105783721B (en) * | 2016-03-31 | 2018-10-23 | 浙江工商大学 | It is a kind of using triple channel detection guard frame rail mounting hole whether qualified device |
| CN105891224B (en) * | 2016-03-31 | 2018-10-23 | 浙江工商大学 | It is a kind of using single optic path detect guard frame rail mounting hole whether qualified device |
| CN110243823B (en) * | 2019-05-08 | 2021-01-05 | 华中科技大学 | Automatic rickets screening device based on support vector machine and using method thereof |
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| US5615013A (en) * | 1995-06-27 | 1997-03-25 | Virtek Vision Corp. | Galvanometer and camera system |
| CN1793860A (en) * | 2005-12-31 | 2006-06-28 | 浙江大学 | Biochip imaging method splitted with laser cofocus scanning combined image and its device |
| CN102706846A (en) * | 2012-06-14 | 2012-10-03 | 中国科学院苏州纳米技术与纳米仿生研究所 | Near-infrared laser scanning confocal imaging system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0783841A (en) * | 1993-09-16 | 1995-03-31 | Fujitsu Ltd | Device for detecting residue in via hole and device for observing same |
| JP3406412B2 (en) * | 1995-02-27 | 2003-05-12 | 三菱電機株式会社 | Image capture device |
| JPH10300441A (en) * | 1997-04-25 | 1998-11-13 | Mitsubishi Electric Corp | Semiconductor inspecting device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5615013A (en) * | 1995-06-27 | 1997-03-25 | Virtek Vision Corp. | Galvanometer and camera system |
| CN1793860A (en) * | 2005-12-31 | 2006-06-28 | 浙江大学 | Biochip imaging method splitted with laser cofocus scanning combined image and its device |
| CN102706846A (en) * | 2012-06-14 | 2012-10-03 | 中国科学院苏州纳米技术与纳米仿生研究所 | Near-infrared laser scanning confocal imaging system |
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Address after: 100000 Beijing City, Chaoyang District Jiuxianqiao Road No. 1 building a layer of M3 Patentee after: Beijing golden orange Polytron Technologies Inc Address before: 100000 Beijing City, Chaoyang District Jiuxianqiao Road No. 1 building a layer of M3 Patentee before: Beijing JCZ Technology Co., Ltd. |