CN102313513A - Novel method for detecting alignment of visual camera - Google Patents
Novel method for detecting alignment of visual camera Download PDFInfo
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- CN102313513A CN102313513A CN2010102201581A CN201010220158A CN102313513A CN 102313513 A CN102313513 A CN 102313513A CN 2010102201581 A CN2010102201581 A CN 2010102201581A CN 201010220158 A CN201010220158 A CN 201010220158A CN 102313513 A CN102313513 A CN 102313513A
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Abstract
The invention relates to a charge coupled device (CCD) calibration alignment (CCA) detection system, which belongs to an internationally and domestically original CCA detection method. In the system, the center of a CCD camera detection product and the center of a marked pattern are mainly used for transmitting detection data to a personal computer (PC); software of the CCA detection system is used for computing the potential difference between the detection product and the marked pattern and recording a corresponding detection result, so that the aim of position detection is fulfilled; and the system can be connected with a laser controller in an expandable way so as to automatically compensate and calibrate a marking potential difference. Compared with the conventional detection technology, the method has the advantages of low cost, convenience of use, high accuracy and the like; most lasers on the market are supported, and the competitive advantages of domestic lasers with oversea lasers can be greatly improved; and the system can be arranged on a common machine platform subsequently, so that possibilities of product upgrading and application upgrading are provided for customers.
Description
Technical field
The present invention is the application of the detection method of a kind of novel CCD; It is auxiliary to position detecting system (CCD Calibration Alignment that name is called CCA; C A); Be the detection system that is based upon on the basis, camera CCD auxiliary image location, belong to detection technique field in the optical, mechanical and electronic integration.
It utilizes the CCD camera that fixed pattern and sign are proofreaied and correct; Comparison needs the eigenwert of the pattern of detection; The detected image result is passed to CCA detection system computer PC; Utilization CCA is auxiliary to calculate two pattern position side-play amounts to position detecting system software, and the data layout output to confirm.
This open data layout can carry out the multi-format editor by the characteristics of following process.For example: the exportable marking position parameter correction of giving laser semiconductor matrix form material bar, so that laser carries out the adjustment of single marking position, the marking position quality and the precision of raising.
The CCA detection system is developed because of the laser index carving high-precision requirement, and the CCD accuracy of detection is superior to+/-1-3um, can improve yield rate and the consistance of laser index carving of the laser index carving of the high-end encapsulation of minimum (little) type.CCA is that specialty is used for the system that device position detects, and the CCD combination of optional different resolution reaches different application purposes with the installation position, for example:
A, contraposition can detect the deviation of the sympodium size up and down of part up and down;
B, one camera cooperate the XY platform, the error of the demarcation position that substep can detection means.
Background technology
Laser mark technology is one of maximum application of Laser Processing.Laser mark technology is to utilize the laser of high-energy-density that workpiece is carried out local irradiation, makes the chemical reaction of skin-material gasification or generation change color, thereby stays a kind of marking method of permanent marker.Laser can be got various literal, symbol and pattern etc., and character boundary can be from the millimeter to the micron dimension, and this has special meaning to product false proof.
Laser can mark which kind of information, only with computing machine in design content relevant, needing only the figure of designing in the computing machine is that marking system can be discerned, the mark machine just can accurately reduce design information on suitable carriers so.Therefore the function of software has determined the function of system in fact to a great extent.
Laser mark technology has been widely used in all trades and professions, for wide prospect has been opened up in high-quality, efficient, pollution-free and modern cheaply processing.Along with the continuous expansion of modern laser index carving application, to the device systems miniaturization that laser is made, high-level efficiency and integrated requirement are also increasingly high, and the succeeding in developing of novel high-power optical-fiber laser technology will produce greatly this and promote.
Continuous development along with technology; The continual renovation of process equipment; CNC is used by a large amount of, makes to rely on the epoch of the external machine of import to go far gradually originally, and the machining precision of Made in China machine can reach the precision of 0.01～0.02mm; Price advantage preferably in addition, more and more enterprises is inclined to made in China day by day.But continuous development along with technology; In some high-tech, high precision industry the marking technology is had higher requirement; Simple mechanical positioning precision can not satisfy requirement of client, and the CCA detection system is in the application to the laser index carving of the high-end encapsulation of minimum (little) type, to arise at the historic moment.In the laser index carving industry field; The polarity marking of high-quality is the basic demand of encapsulation; Correct complete clear and legible be the fundamental norms of device marking; Fully automatic system is the high production capacity of marking, high-quality assurance, and the outfit of detection system is that the consistance of marking result and quality is protected and checks.
The CCA system invents on the basis of at home encapsulation industry technology experience and the corresponding apparatus guarantee of challenging SIP, BGA, CSP, WLP encapsulation jointly; It has combined advanced over the past two years laser technology; And constantly progressive and develop along with the standardization of the widespread use of CCD and function, can tackle the high precision marking requirement of minimal type encapsulation.CCA combines existing C CDP technology, is applied in the management of the WLP encapsulation quality of production, and its CCD accuracy of detection is superior to+/-1-3um, this CCD detection technique will be that the professional application of international, domestic original creation is in the system of industrialization.
Summary of the invention
The present invention is the auxiliary to position detecting method of the world, domestic original creation; It mainly is the center of CCD lmaging camera testing product and the center of marking pattern, will detect data and send computer PC to, utilizes the auxiliary software to position detecting system of CCA to calculate the potential difference between the two; And record relevant detection result; Thereby reach the position probing purpose, it can expand the connection laser controller, compensates and proofread and correct the marking potential difference automatically.
Method of application one: contraposition detects the deviation of the sympodium size up and down of part up and down
1, first method mainly is to use two CCD cameras, and these two CCD cameras are installed in the both sides of product, and these two CCD cameras are aimed at product simultaneously, and use calibration software guarantee the installation accuracy of two CCD cameras＜+/-1～3um.
2, delivering to the CCA system behind intact first product of laser index carving detects; The CCD camera of one side is confirmed the center of tablet according to the position of pin; The CCD camera of opposite side is used for confirming the center of marking pattern, calculates the side-play amount of laser index carving pattern through comparing these two centers.
3, after having detected all marking patterns; The CCA system generates a position offset Mapping with all side-play amounts; And through data connector and stube cable Mapping is sent to the PC of laser instrument; Laser instrument carries out rectification building-out according to position offset Mapping, and laser instrument just can accurately be positioned at the marking content on the relevant position of workpiece like this.
Method of application two: one camera cooperates the XY platform, the error of the demarcation position of substep detection means
1, second method is to use a CCD camera, and this CCD camera is aimed at product, and use calibration software guarantee the installation accuracy of CCD camera＜+/-1～3um.
2, laser has been beaten and has been delivered to that CCA is auxiliary to be detected position detecting system behind the first sheet stock bar; The CCD camera detects the center of marking pattern for the first time; The CCD camera detects the center of tablet for the second time, calculates the side-play amount of laser index carving pattern through the center of comparing this twice detection.
3, after having detected all marking patterns; The CCA system generates a position offset Mapping with all side-play amounts; And through data connector and stube cable Mapping is sent to the PC of laser instrument; Laser instrument carries out rectification building-out according to position offset Mapping, and laser instrument just can accurately be positioned at the marking content on the relevant position of workpiece like this.
Compare with existing detection technique; The present invention has low cost, easy to use, precision advantages of higher; And support the most of laser in market, can improve the competitive edge of homemade laser greatly, and can be on common board with external laser; After add this device, for the client provide product up-gradation and application upgrade provide maybe.
Description of drawings
Auxiliary two application of Fig. 1 CCA to position detecting system
Fig. 2 CCA is auxiliary to use a workflow diagram to position detecting system
Fig. 3 CCA is auxiliary to use two workflow diagrams to position detecting system
Embodiment
Below in conjunction with accompanying drawing and practical implementation the present invention is elaborated
Use one:
Behind A, the intact product of laser instrument marking it is delivered to the CCA detection system;
B, CCA detection system need two CCD cameras as one group; These two CCD cameras are installed on the both sides of tablet respectively; These two CCD cameras are aimed at product simultaneously, make two CC D cameras on same center line, and guarantee the software compensation installation accuracy of two CCD cameras＜+/-1～3um.CCD-1 gathers and detects the central point of marking pattern from the front, CCD-2 gathers the central point with testing product from the back side according to pin.
C, the PC of CCA system calculate the side-play amount of marking pattern through the central point of the marking pattern of comparison CCD-1 collection and the central point of the tablet that CCD-2 gathers;
D, CCA-PC will generate a position offset Mapping after having calculated the side-play amount of all marking points;
E, and give laser instrument PC position offset Mapping exchanges data through data connector and stube cable;
F, laser instrument PC are the data that obtain, and the mark coordinate figure of the laser instrument that is added to accurately compensates the relevant position that the mark content is positioned at workpiece, realize the correction precision of laser instrument marking.
Use two:
Behind A, the intact product of laser instrument marking it is delivered to the CCA detection system;
B, CCA detection system need a CCD camera, and this CCD camera is aimed at product, the installation accuracy of CCD camera＜+/-1～3um.CCD camera continuous exposure twice, the central point of marking pattern is gathered and is detected in exposure for the first time, and CCD makes public for the second time and gathers and the central point of testing product.
C, the PC of CCA system calculate the side-play amount of marking pattern through the central point of the marking pattern of comparison CCD collection and the central point of tablet;
D, CCA-PC will generate a position offset Mapping after having calculated the side-play amount of all marking points;
E also exchanges Mapping to laser instrument PC through data connector and stube cable;
F, laser instrument PC be the data that obtain, and the mark coordinate figure of the laser instrument that is added to accurately is positioned at the mark content relevant position of workpiece, realizes the rectification building-out of laser instrument marking.
Claims (2)
1. the present invention is the application of the detection method of a kind of novel CCD, and it is auxiliary to position detecting system (CCDCalibration Alignment, C A) that name is called CCA, is the detection system that is based upon on the basis, camera CCD auxiliary image location.
2. CCA according to claim 1 is auxiliary to position detecting system; Be to utilize the CCD camera that fixed pattern and sign are proofreaied and correct; Comparison needs the eigenwert of the pattern of detection, and the detected image result is passed to CCA detection system computer PC, and utilization CCA is auxiliary to position detecting system software; Calculate two pattern position side-play amounts, and the data layout output to confirm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102201581A CN102313513A (en) | 2010-07-06 | 2010-07-06 | Novel method for detecting alignment of visual camera |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102201581A CN102313513A (en) | 2010-07-06 | 2010-07-06 | Novel method for detecting alignment of visual camera |
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| CN102313513A true CN102313513A (en) | 2012-01-11 |
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| CN2010102201581A Pending CN102313513A (en) | 2010-07-06 | 2010-07-06 | Novel method for detecting alignment of visual camera |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865815A (en) * | 2012-09-24 | 2013-01-09 | 上海功源电子科技有限公司 | Novel positioning compensation method for PCB by single vision camera |
| CN104198386A (en) * | 2014-09-11 | 2014-12-10 | 上海功源电子科技有限公司 | Method and device for displaying and acquiring multi-camera images based on dual displays |
| CN106705860A (en) * | 2016-12-29 | 2017-05-24 | 苏州逸美德科技有限公司 | Laser distance measurement method |
| CN111275761A (en) * | 2020-01-17 | 2020-06-12 | 湖北三江航天红峰控制有限公司 | Visual positioning laser marking method with self-adaptive height |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640607A (en) * | 2004-01-02 | 2005-07-20 | 上海工程技术大学 | Thin-plate laser cutting-welding machine workpiece positioning photoelectric measuring and controlling device |
-
2010
- 2010-07-06 CN CN2010102201581A patent/CN102313513A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640607A (en) * | 2004-01-02 | 2005-07-20 | 上海工程技术大学 | Thin-plate laser cutting-welding machine workpiece positioning photoelectric measuring and controlling device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865815A (en) * | 2012-09-24 | 2013-01-09 | 上海功源电子科技有限公司 | Novel positioning compensation method for PCB by single vision camera |
| CN102865815B (en) * | 2012-09-24 | 2015-01-07 | 上海功源电子科技有限公司 | Novel positioning compensation method for PCB by single vision camera |
| CN104198386A (en) * | 2014-09-11 | 2014-12-10 | 上海功源电子科技有限公司 | Method and device for displaying and acquiring multi-camera images based on dual displays |
| CN106705860A (en) * | 2016-12-29 | 2017-05-24 | 苏州逸美德科技有限公司 | Laser distance measurement method |
| CN106705860B (en) * | 2016-12-29 | 2019-07-19 | 苏州逸美德科技有限公司 | A kind of laser distance measurement method |
| CN111275761A (en) * | 2020-01-17 | 2020-06-12 | 湖北三江航天红峰控制有限公司 | Visual positioning laser marking method with self-adaptive height |
| CN111275761B (en) * | 2020-01-17 | 2023-10-03 | 湖北三江航天红峰控制有限公司 | Visual positioning laser marking method with self-adaptive height |
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Application publication date: 20120111 |