CN103217434A - Method for scanning SMT screen plate - Google Patents
Method for scanning SMT screen plate Download PDFInfo
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- CN103217434A CN103217434A CN2012100158980A CN201210015898A CN103217434A CN 103217434 A CN103217434 A CN 103217434A CN 2012100158980 A CN2012100158980 A CN 2012100158980A CN 201210015898 A CN201210015898 A CN 201210015898A CN 103217434 A CN103217434 A CN 103217434A
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Abstract
The invention relates to the technical field of detection and especially relates to a method for scanning a SMT screen plate. The method is used for detecting screen holes in the SMT screen plate. The method comprises the following steps of scanning a SMT screen plate by a scanner, transmitting the scanned image to a micro-processor system, carrying out processing on the scanned image by the micro-processor system, comparing the scanned image and a standard image of the built-in SMT screen plate, and determining a scanning result. The method solves the problem that the existing SMT screen plate production enterprise utilizes operators to realize detection of extra/missing holes of a screen plate, and improves a rate and efficiency of SMT screen plate detection.
Description
Technical field
The present invention relates to the detection technique field, be specifically related to the detection method of mesh in a kind of SMT web plate.
Background technology
In SMT web plate manufacturing enterprise, the manual detection mode is adopted in the detection in mesh porous or few hole substantially at present, use the overlapping web plate printing opacity of tracing paper to check.Can check fast for the web plate that hole count is less.If but the web plate hole count is more, when above, supervisory personnel's inspection difficulty improves greatly such as 3k-5k even 1W.Usually the web plate professional of 3k-5k needed checked in 3-5 minute, if the web plate perforate is more than 1W then need the detection repeatedly of more time even 2-3 time just can finish.In testing process, testing staff's quality and skill level have determined the height of verification and measurement ratio and detection speed.
In order to reduce artificial factor, improve the detection efficiency of mesh, in the SMT industry, traditional AOI equipment also can be used for the detection of mesh.But owing to there is following problem in the characteristics decision of the AOI equipment application own: the AOI apparatus expensive, the detection cost that is applied in the web plate mesh is higher; AOI equipment uses the high-resolution camera as the equipment that obtains image, image contraposition splicing difficulty in being applied to large format product scanning process.
Summary of the invention
The objective of the invention is to, a kind of scan method of the SMT of being used for web plate is provided, solve above technical matters.
Technical matters solved by the invention can realize by the following technical solutions:
A kind of scan method that is used for the SMT web plate, it is characterized in that, adopt following scan mode: the SMT web plate is scanned by scanner, send scan image to the microprocessor system, after described microprocessor system handles scan image, the standard picture of the SMT web plate built-in with it compares, and determines scanning result.
The invention provides a kind of advantages of simplicity and high efficiency scanning detection method, realized the detection in SMT web plate porous and few hole with low-cost and simple means.The present invention replaces artificial mesh to web plate to detect, and reduces artificial factor, has improved the speed and the efficient of producing greatly.In addition, the present invention compares with AOI device scan mesh, and is of the present invention with low cost, can be applied in the scanning of large format product, and provide advanced detection means statistics to export examining report accurately, guarantees whole testing process stable and controllable.
The present invention specifically comprises the steps:
1) connect: scanner and microprocessor system connect by communications protocol, and described microprocessor system controls described scanner operation;
2) web plate scanning: described scanner scans the SMT web plate, and described scanner obtains scan image, and sends described scan image to described microprocessor system;
3) scan image conversion: after described scan image is received by described microprocessor system,, described scan image is converted into bitmap from vector graphics by built-in transfer algorithm;
4) mesh detects: described microprocessor system compares by the standard picture of built-in algorithm to the described bitmap SMT web plate built-in with it, determines scanning result.
In the step 1), the microprocessor system can adopt TWAIN data communication agreement with being connected of scanner.So that effectively avoid incompatibility problem between system and the scanner.
Before step 3), comprise that also image corrects: described microprocessor system is built-in with the rectification mathematical model, and according to the scanner feature, after the input model parameter, distorted image is corrected by described microprocessor system, forms the image after correcting.
In the step 1), can detect needs, the sweep parameter of scanner be adjusted by the microprocessor system according to on-the-spot SMT web plate.
Described microprocessor system also connects a human-computer interface device, when the user accepts scanning result that described microprocessor system determines by human-computer interface device, and described microprocessor system output scanning examining report.
When the user negates the scanning result that described microprocessor system determines by human-computer interface device, adopt manual identification mode that the SMT web plate is detected, the testing staff imports described microprocessor system with testing result by human-computer interface device, described microprocessor system output scanning examining report.
Beneficial effect: owing to adopt technique scheme, the invention solves the few hole of the manual detection of SMT web plate manufacturing enterprise dependence in the past web plate porous, improved detection speed and detection efficiency that the SMT web plate detects.
Description of drawings
Fig. 1 is a schematic flow sheet of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, further set forth the present invention below in conjunction with concrete diagram.
A kind of scan method that is used for the SMT web plate, adopt following scan mode: the SMT web plate is scanned by scanner, send scan image to the microprocessor system, after the microprocessor system handles scan image, the standard picture of the SMT web plate built-in with it compares, and determines scanning result.The invention provides a kind of advantages of simplicity and high efficiency scanning detection method, realized the detection in the few hole of SMT web plate porous with low-cost and simple means.The present invention replaces artificial mesh to web plate to detect, and reduces artificial factor, has improved the speed and the efficient of producing greatly.In addition, the present invention compares with AOI device scan mesh, and is of the present invention with low cost, can be applied in the scanning of large format product, and provide advanced detection means statistics to export examining report accurately, guarantees whole testing process stable and controllable.
With reference to Fig. 1, web plate scan method of the present invention specifically can comprise the steps:
The first step connects: for fear of the incompatibility problem between microprocessor system and the different scanner, scanner and microprocessor system adopt TWAIN data communication agreement to connect.Detect the characteristic of needs and scanner according to on-the-spot SMT web plate, after by the microprocessor system sweep parameter of scanner being adjusted, the gated sweep instrument operation of microprocessor system.
In second step, web plate scanning: under the control of microprocessor system, scanner scans the SMT web plate, and scanner obtains scan image, and sends scan image to the microprocessor system.
In the 3rd step, image is corrected: the microprocessor system is built-in with the rectification mathematical model, and according to the scanner feature, after the input model parameter, distorted image is corrected by the microprocessor system, forms the image after correcting.
In the 4th step, the scan image conversion: the microprocessor system is converted into bitmap with the image after correcting from vector graphics by built-in transfer algorithm.
In the 5th step, mesh detects: to bitmap, the standard picture of the SMT web plate built-in with it compares, and determines scanning result by built-in algorithm in the microprocessor system.
The 6th step, when the user accepts scanning result that the microprocessor system determines, microprocessor system output scanning examining report one human-computer interface device;
When the user negates the scanning result that the microprocessor system determines, adopt manual identification mode that the SMT web plate is detected, the testing staff imports microprocessor system, microprocessor system output scanning examining report with testing result by human-computer interface device.
In order to realize the scan method of above-mentioned SMT web plate, the scanning device of building is as follows:
The scanning device of SMT web plate comprises one scan instrument, a microprocessor system, and the control end of scanner connects the signal output part of microprocessor system.The signal output part of scanner connects the signal input part of microprocessor system.The microprocessor system also is provided with a standard picture input interface, is used to import the standard picture of SMT web plate.The microprocessor system is built-in with image is carried out the rectification module that distortion is corrected, and also is built-in with the image conversion module that image is converted into bitmap from vector graphics.
Communications protocol between scanner and the microprocessor system preferably adopts the TWAIN communications protocol.Can adopt wired or wireless form to be connected between microprocessor system and the scanner.Scanner can adopt flatbed scanner, also can adopt portable scanner.The selection of scanner can be set according to the specification of SMT web plate.The microprocessor system can also connect a printing device, by printing device the output scanning examining report is printed, for checking.
The scanning device of SMT web plate can also comprise a host computer, and host computer is built-in with above-mentioned microprocessor system.The user can determine scanning result on host computer, check the output scanning examining report.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (7)
1. scan method that is used for the SMT web plate, it is characterized in that, adopt following scan mode: the SMT web plate is scanned by scanner, send scan image to the microprocessor system, after described microprocessor system handles scan image, the standard picture of the SMT web plate built-in with it compares, and determines scanning result.
2. a kind of scan method that is used for the SMT web plate according to claim 1 is characterized in that: comprise the steps:
1) connect: scanner and microprocessor system connect by communications protocol, and described microprocessor system controls described scanner operation;
2) web plate scanning: described scanner scans the SMT web plate, and described scanner obtains scan image, and sends described scan image to described microprocessor system;
3) scan image conversion: after described scan image is received by described microprocessor system,, described scan image is converted into bitmap from vector graphics by built-in transfer algorithm;
4) mesh detects: described microprocessor system compares by the standard picture of built-in algorithm to the described bitmap SMT web plate built-in with it, determines scanning result.
3. a kind of scan method that is used for the SMT web plate according to claim 2 is characterized in that: in the step 1), the microprocessor system adopts TWAIN data communication agreement with being connected of scanner.
4. according to claim 2 or 3 described a kind of scan methods that are used for the SMT web plate, it is characterized in that: in the step 1), the sweep parameter of scanner is adjusted by the microprocessor system.
5. a kind of scan method that is used for the SMT web plate according to claim 2, it is characterized in that: before step 3), comprise that also image corrects: described microprocessor system is built-in with the rectification mathematical model, according to the scanner feature, after the input model parameter, distorted image is corrected by described microprocessor system, forms the image after correcting.
6. according to claim 2,3 or 5 described a kind of scan methods that are used for the SMT web plate, it is characterized in that: described microprocessor system also connects a human-computer interface device, when the user accepts scanning result that described microprocessor system determines by human-computer interface device, described microprocessor system output scanning examining report.
7. a kind of scan method that is used for the SMT web plate according to claim 6, it is characterized in that: when the user negates the scanning result that described microprocessor system determines by human-computer interface device, adopt manual identification mode that the SMT web plate is detected, the testing staff imports described microprocessor system with testing result by human-computer interface device, described microprocessor system output scanning examining report.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100158980A CN103217434A (en) | 2012-01-19 | 2012-01-19 | Method for scanning SMT screen plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100158980A CN103217434A (en) | 2012-01-19 | 2012-01-19 | Method for scanning SMT screen plate |
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| CN103217434A true CN103217434A (en) | 2013-07-24 |
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| CN2012100158980A Pending CN103217434A (en) | 2012-01-19 | 2012-01-19 | Method for scanning SMT screen plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181306A (en) * | 2017-12-05 | 2018-06-19 | 张家港市东大工业技术研究院 | A kind of scanning detection method for SMT screen plate |
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| CN101951332A (en) * | 2010-08-31 | 2011-01-19 | 中山大学 | Digital home cleaning method and system |
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2012
- 2012-01-19 CN CN2012100158980A patent/CN103217434A/en active Pending
Patent Citations (5)
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| US20070021944A1 (en) * | 2005-07-22 | 2007-01-25 | Levy Moise M | Municipal cleaning systems and methods |
| CN101826127A (en) * | 2010-04-07 | 2010-09-08 | 芯硕半导体（中国）有限公司 | Method for converting GDSII file into maskless photoetching machine exposure data |
| CN101825581A (en) * | 2010-04-16 | 2010-09-08 | 广东工业大学 | Model-based method for detecting PCB defects |
| CN101951332A (en) * | 2010-08-31 | 2011-01-19 | 中山大学 | Digital home cleaning method and system |
| CN202092966U (en) * | 2011-03-11 | 2011-12-28 | 深圳市信恳实业有限公司 | Automatic hole plugging checking instrument for SMT (surface mounting technology) steel mesh |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108181306A (en) * | 2017-12-05 | 2018-06-19 | 张家港市东大工业技术研究院 | A kind of scanning detection method for SMT screen plate |
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Application publication date: 20130724 |