CN103175838A - PS (Presensitized Plate) plate surface detection system based on machine vision - Google Patents
PS (Presensitized Plate) plate surface detection system based on machine vision Download PDFInfo
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- CN103175838A CN103175838A CN2011104329832A CN201110432983A CN103175838A CN 103175838 A CN103175838 A CN 103175838A CN 2011104329832 A CN2011104329832 A CN 2011104329832A CN 201110432983 A CN201110432983 A CN 201110432983A CN 103175838 A CN103175838 A CN 103175838A
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Abstract
The invention discloses a PS (Presensitized Plate) plate surface detection system based on machine vision, and relates to the field of industrial automation technology. The system comprises image acquiring equipment, image processing equipment and system lighting equipment, wherein the image acquiring equipment is used for acquiring the information of the original image of the upper surface of a PS plate; the image processing equipment is used for processing the original image information acquired by the image acquiring equipment in order to distinguish the defects on the upper surface of the PS plate; and the system lighting equipment is used for providing imaging light to the image acquiring equipment during acquiring the information of the original image of the upper surface of the PS plate. By adopting the PS plate surface detection system based on the machine vision, provided by the invention, the PS plate detection process can be carried out in a mechanical automatic detection way in stead of a manual detection way, and thus the purposes of reducing the omission factor, decreasing the cost and improving the precision and production efficiency during detecting the PS plate can be realized.
Description
Technical field
The present invention relates to the industrial automation technical field, particularly a kind of PS version surface detecting system based on machine vision.
Background technology
Pre-coating photosensitive (Presensitized Plate, PS) version is lithographic a kind of high-quality forme, and since coming out, world wide obtains develop rapidly, now has been widely used in the printing of newspaper, magazine, books.
In process of production, due to reasons such as raw material quality, production technologies, PS version surface has flaw or defective, such as: take off be coated with, stain, cut, fold etc., thereby affected the quality of product.
At present, domestic each PS version manufacturer mainly still relies on the identification of workman's naked eyes for the detection of PS version surface blemish defective.But limited people's subjective factor impact undetected situation can occur often in the process that detects, brought very large economic loss to producer like this.And along with the continuous increase of cost of labor, the improving constantly of the PS version production line speed of a motor vehicle, the artificial detection method of this pure dependence is more and more inadvisable.
In sum, there is following deficiency in existing PS version surface detection technique:
1, loss is high: limited people's subjective factor, and probability undetected in PS version testing process is very high;
2, cost is high: loss is high, and the economic loss of producer's meeting is large; And along with wage for workmen's growth, the cost of labor of producer also can be more and more higher;
3, accuracy of detection is low: rely on merely manual detection, accuracy of detection will certainly be very low;
4, production efficiency is low: the raising of the manual detection restriction production line speed of a motor vehicle; And PS version production environment has mild toxicity, and long-time the detection can affect detection efficiency, also can impact the healthy of workman;
Summary of the invention
The technical matters that (one) will solve
The technical problem to be solved in the present invention is: how in PS version testing process, reduce loss, cost, and improve precision and production efficiency.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of PS version surface detecting system based on machine vision, described system comprises: image capture device, image processing equipment and system illumination equipment,
Described image capture device is for the original image information that gathers PS version upper surface;
Described image processing equipment is used for the original image information that described image capture device gathers is processed, to identify the flaw of described PS version upper surface;
Described system illumination equipment is used to described image capture device to be provided as the picture illumination when gathering the original image information of PS version upper surface.
Preferably, described system also comprises: system synchronization equipment, be connected with described image capture device, and be used for providing synchronizing signal to described image capture device.
Preferably, described system synchronization equipment comprises: interconnective synchronous box and scrambler, described scrambler contacts with described PS version lower surface.
Preferably, described system also comprises: ink jet numbering machine, be connected with described image processing equipment, and be used for the result according to described image processing equipment, the flaw on the PS version is carried out the coding sign.
Preferably, described system also comprises: the coding cognitron, be connected with described image processing equipment, and be used for identifying the coding sign that described ink jet numbering machine carries out.
Preferably, described system also comprises: alarm lamp, be connected with described image processing equipment, and be used for the result according to described image processing equipment, when having flaw to occur, carry out alarm on the PS version.
Preferably, described system illumination equipment comprises: at least a in linear light sorurce, strip source and coaxial light source.
Preferably, the light source of described system illumination equipment is the visible light that optical wavelength is not less than 450nm.
Preferably, described image capture device is the linear array CCD camera of a linear array CCD camera or at least two parallel splicings.
Preferably, described system also comprises: power-supply device is used to the miscellaneous part in described system to power, and carries out power-off protection and power management.
(3) beneficial effect
The present invention makes in the PS testing process by a kind of PS version surface detecting system based on machine vision is provided, and needn't adopt artificial detection mode, but the automatic detection of machine, realized having reduced loss, cost in PS version testing process, and improved precision and production efficiency.
Description of drawings
Fig. 1 is the structured flowchart based on the PS version surface detecting system of machine vision according to one embodiment of the present invention;
Fig. 2 is the concrete structure schematic diagram according to PS version surface detecting system based on machine vision shown in Figure 1.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
Fig. 1 is the structured flowchart based on the PS version surface detecting system of machine vision according to one embodiment of the present invention, and with reference to Fig. 1, the described system of present embodiment comprises: image capture device, image processing equipment and system illumination equipment,
Described image capture device is for the original image information that gathers PS version upper surface;
Described image processing equipment is used for the original image information that described image capture device gathers is processed, to identify the flaw of described PS version upper surface;
Described system illumination equipment is used to described image capture device to be provided as the picture illumination when gathering the original image information of PS version upper surface.
due to described PS version in the process that detects, can transmit, for guaranteeing that image capture device keeps synchronizeing with the transmission of PS version, to avoid undetected situation to occur, preferably, described system also comprises: system synchronization equipment, be connected with described image capture device, be used for providing synchronizing signal to described image capture device, with reference to Fig. 2, in present embodiment, preferably, described system synchronization equipment comprises: interconnective synchronous box (not shown) and scrambler 8, described scrambler 8 contacts with described PS version 5 lower surfaces, to obtain the transfer rate of PS version 5, described synchronous box produces synchronizing signal according to described transfer rate, and synchronously be sent to described image capture device 1 with described.
For the position to the flaw on described PS version 5 identifies, preferably, described system also comprises: ink jet numbering machine 4, be connected with described image processing equipment 6, and be used for the result according to described image processing equipment 6, the flaw 2 on PS version 5 is carried out the coding sign.
Due to after the testing process of PS version 5, need to carry out the piling operation, and in piling operation preorder, the flaw of PS version 5 upper surfaces is added up, preferably, described system also comprises: coding cognitron (not shown), be connected with described image processing equipment 6, be used for identifying the coding sign that described ink jet numbering machine 4 carries out, described image processing equipment 6 is added up the flaw 2 of PS version 5 upper surfaces by described coding cognitron.
In present embodiment, preferably, described system also comprises: alarm lamp 7, be connected with described image processing equipment 6, and be used for the result according to described image processing equipment 6, when having flaw 2 to occur, carry out alarm on PS version 5.
Preferably, described system illumination equipment 3 comprises: at least a in linear light sorurce, strip source and coaxial light source, characteristic according to PS version 5, the light source of described system illumination equipment 3 is the visible light that optical wavelength is not less than 450nm, in present embodiment, described light source is the yellow light sources of 570nm.
Preferably, described image capture device 1 is the linear array CCD camera of a linear array charge coupled cell (Charge-coupled Device, CCD) camera or at least two parallel splicings.
Preferably, described system also comprises: power-supply device is used to the miscellaneous part in described system to power, and carries out power-off protection and power management.
The processing procedure of described image processing equipment is: after receiving the image raw information of image capture device 1, complete the rough handling of original image, and through boundary alignment, figure image intensifying (linear stretch), binaryzation (single threshold, dual threshold, self-adaptation), removal isolated point (neighborhood search), image or (removal background, only stay flaw), the series of algorithms such as morphological image processes, and obtains the information such as picture, size, position of flaw 2 in the original image of PS version 5 upper surfaces.
the principle of work of the system of present embodiment is: described image capture device is under the imaging illumination that described system illumination equipment provides, gather the original image information of PS version upper surface, described image processing equipment is processed the original image information that described image capture device gathers, to identify the flaw of described PS version upper surface, when described image processing equipment is found the flaw of PS version upper surface, by described code spraying device, PS version lower surface is carried out the coding sign, and carry out alarm by described alarm lamp, after the testing process of PS version, need to carry out the piling operation, and in piling operation preorder, the flaw of PS version upper surface is added up, the coding sign that the described ink jet numbering machine of coding cognitron identification carries out, described image processing equipment is added up the flaw of PS version upper surface by described coding cognitron.
The system of present embodiment has following advantage and beneficial effect:
1, need not to change existing production process, be easily installed on PS version production line;
2, realize the real-time online detection on PS version surface, the production efficiency of production firm is provided: native system can be realized the real-time online of 30m/minPS version production line is detected.
3, accuracy of detection is high: more than native system acquisition precision 0.05mm, accuracy of detection reaches 0.1mm, far above present manual detection level;
4, loss is low: whole testing process is completed by industrial control computer or PC fully, and is unmanned for the objective factor impact, can greatly reduce loss;
5, production cost is low: loss has reduced, and reduces the economic loss of production firm; Discharge a large amount of manpowers, reduce human cost, conservative estimation, every line discharges 60 artificial labours, the annual cost 1,000,000 of saving.
Above embodiment only is used for explanation the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. the PS version surface detecting system based on machine vision, is characterized in that, described system comprises: image capture device, image processing equipment and system illumination equipment,
Described image capture device is for the original image information that gathers PS version upper surface;
Described image processing equipment is used for the original image information that described image capture device gathers is processed, to identify the flaw of described PS version upper surface;
Described system illumination equipment is used to described image capture device to be provided as the picture illumination when gathering the original image information of PS version upper surface.
2. the system as claimed in claim 1, is characterized in that, described system also comprises: system synchronization equipment, be connected with described image capture device, and be used for providing synchronizing signal to described image capture device.
3. as the above system of claim 2, it is characterized in that, described system synchronization equipment comprises: interconnective synchronous box and scrambler, described scrambler contacts with described PS version lower surface.
4. the system as claimed in claim 1, is characterized in that, described system also comprises: ink jet numbering machine, be connected with described image processing equipment, and be used for the result according to described image processing equipment, the flaw on the PS version is carried out the coding sign.
5. system as claimed in claim 4, is characterized in that, described system also comprises: the coding cognitron, be connected with described image processing equipment, and be used for identifying the coding sign that described ink jet numbering machine carries out.
6. the system as claimed in claim 1, is characterized in that, described system also comprises: alarm lamp, be connected with described image processing equipment, and be used for the result according to described image processing equipment, when having flaw to occur, carry out alarm on the PS version.
7. the system as claimed in claim 1, is characterized in that, described system illumination equipment comprises: at least a in linear light sorurce, strip source and coaxial light source.
8. the system as claimed in claim 1, is characterized in that, the light source of described system illumination equipment is the visible light that optical wavelength is not less than 450nm.
9. the system as claimed in claim 1, is characterized in that, described image capture device is the linear array CCD camera of a linear array CCD camera or at least two parallel splicings.
10. system as described in any one in claim 1～9, is characterized in that, described system also comprises: power-supply device is used to the miscellaneous part in described system to power, and carries out power-off protection and power management.
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Cited By (6)
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| CN104614380A (en) * | 2013-11-04 | 2015-05-13 | 北京兆维电子(集团)有限责任公司 | Plate-strip surface quality detection system and method |
| CN104614379A (en) * | 2013-11-04 | 2015-05-13 | 北京兆维电子(集团)有限责任公司 | Plate surface defect detection system and method |
| CN105172367A (en) * | 2015-09-15 | 2015-12-23 | 南京理工科技化工有限责任公司 | System for online marking defect of detonating tube |
| CN107490581A (en) * | 2017-08-01 | 2017-12-19 | 中铝瑞闽股份有限公司 | A kind of detection method of CTP version bases surface underworld defect |
| CN108489999A (en) * | 2018-03-23 | 2018-09-04 | 四川恒立智方自动化工程有限公司 | The assembling flaw detection method of workpiece |
| CN115230346A (en) * | 2022-08-03 | 2022-10-25 | 河南汇达印通科技股份有限公司 | Photosensitive material plate production device and production method |
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Cited By (6)
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| CN104614380A (en) * | 2013-11-04 | 2015-05-13 | 北京兆维电子(集团)有限责任公司 | Plate-strip surface quality detection system and method |
| CN104614379A (en) * | 2013-11-04 | 2015-05-13 | 北京兆维电子(集团)有限责任公司 | Plate surface defect detection system and method |
| CN105172367A (en) * | 2015-09-15 | 2015-12-23 | 南京理工科技化工有限责任公司 | System for online marking defect of detonating tube |
| CN107490581A (en) * | 2017-08-01 | 2017-12-19 | 中铝瑞闽股份有限公司 | A kind of detection method of CTP version bases surface underworld defect |
| CN108489999A (en) * | 2018-03-23 | 2018-09-04 | 四川恒立智方自动化工程有限公司 | The assembling flaw detection method of workpiece |
| CN115230346A (en) * | 2022-08-03 | 2022-10-25 | 河南汇达印通科技股份有限公司 | Photosensitive material plate production device and production method |
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Application publication date: 20130626 |