CN105760866A - Laser coding identification and reading system and method - Google Patents
Laser coding identification and reading system and method Download PDFInfo
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- CN105760866A CN105760866A CN201610066914.7A CN201610066914A CN105760866A CN 105760866 A CN105760866 A CN 105760866A CN 201610066914 A CN201610066914 A CN 201610066914A CN 105760866 A CN105760866 A CN 105760866A
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- product
- laser
- recognition
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- excitation source
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/145—Illumination specially adapted for pattern recognition, e.g. using gratings
Abstract
The present invention provides a laser coding identification and reading system and method, and relates to the field of the industrial automation. The objective of the invention is to solve the problem that the laser etching tag identification is performed at the special position of a product to lead to large troubles for the location work of a leaser machine. The system comprises: products, a laser etching mechanism and an identification and reading mechanism. An original pattern with motivated visible fluorescence materials is arranged at the surface of the product; and the laser etching mechanism is configured to etch tag identification to be identified and read at random position of the original pattern at the surface of the product, and the product to be identified and read is made. The identification and reading mechanism includes an excitation light source and a bandpass filter disposed between the excitation light source and the product to be identified and read, a shooting device and a visible light high-pass optical filter arranged between the shooting device and the product to be identified and read, and an identification device connected with the shooting device. The laser coding identification and reading system and method do not need to consider the location work of a laser machine, and are able to performing random overlapping etching at any position at the surface of the product and accurately complete identification and reading operation.
Description
[technical field]
The present invention relates to industrial automation, the recognition system of especially a kind of laser incising code and method.
[background technology]
We sometimes need to etch some words, character or pattern with laser at some product surfaces in the industrial production at present.On other stations related to this we need on the word of a station etching, character or pattern take pictures, detect or read data.But the pattern of laser-induced thermal etching is usually colourless, it is only that product subsurface material is evaporated, and then form word, character or pattern, that is the color formed after laser-induced thermal etching is usually specific, if so product surface has master pattern, the master pattern that then word of laser-induced thermal etching, character or pattern are easy to product surface mixes, further in the process of follow-up take pictures detection and reading, it is difficult to take pictures and collect effective data.Current processing scheme is to require laser-induced thermal etching word, character or pattern on the ad-hoc location of product, to avoid the master pattern of product surface, the laser-induced thermal etching character design sketch of existing scheme shown in Figure 1, but this brings very big trouble to the location work of laser machine.
[summary of the invention]
The invention provides the recognition system of a kind of laser incising code and method, require laser-induced thermal etching coded identifier on the ad-hoc location of product in order to solve prior art, to the problem that the location work of laser machine brings relatively burden.
A kind of recognition system of the laser incising code of the present invention, including: product, laser-induced thermal etching mechanism and recognition mechanism；Wherein, the surface of described product has the master pattern exciting visible fluorescence material；Described laser-induced thermal etching mechanism etches coded identifier to be distinguished in the optional position of the master pattern of described product surface, makes and treats recognition product；Described recognition mechanism include: excitation source and be placed in described excitation source and treat recognition product between bandpass filter, filming apparatus and be placed in described filming apparatus and the visible ray high-pass filter treated between recognition product, and the identification device being connected with described filming apparatus；Described excitation source is irradiated by bandpass filter treats recognition product, to excite visible fluorescence, the image that the visible fluorescence that described filming apparatus is excited by the shooting of visible ray high-pass filter presents, is distinguished coded identifier by described identification device from the image presented.
Wherein, described bandpass filter is a piece of, or is at least two.Described visible ray high-pass filter is a piece of, or is at least two.
Wherein, described excitation source is flat lighting source, line lighting source, or some lighting source.
Wherein, described filming apparatus is that map device is adopted in face, or map device adopted by line.
The reading method of a kind of laser incising code of the present invention, comprises the following steps: S1, etches coded identifier to be distinguished in the optional position of the master pattern of product surface, makes and treats recognition product, and the master pattern of described product surface adopts and excites visible fluorescence material；S2, excitation source distinguish product by treating described in bandpass filter irradiation, to excite visible fluorescence；The image that the visible fluorescence that S3, filming apparatus are excited by the shooting of visible ray high-pass filter presents；S4, identification device distinguish coded identifier from the image presented；The reading method of described laser incising code adopts the recognition system of above-mentioned laser incising code to implement.
Wherein, the described wavelength exciting visible fluorescence material and described excitation source matches, when excitation source by bandpass filter irradiate described in until recognition product time, inspire the visible fluorescence of another wavelength.
Wherein, the wavelength of described excitation source is UV-visible wavelength or Infrared wavelength.
Wherein, light source purity is improved by described bandpass filter.
Wherein, filming apparatus is made only to receive the image that visible fluorescence presents by described visible ray high-pass filter.
The recognition system of the laser incising code of the present invention and method, it is not necessary to consider the location work of laser machine, can in the optional position of product surface, arbitrarily overlapping etching, and can accurately complete read operation.
[accompanying drawing explanation]
Fig. 1 is the laser-induced thermal etching character design sketch of prior art；
Fig. 2 is the system structure schematic diagram of the embodiment of the present invention 1；
Fig. 3 be in the embodiment of the present invention master pattern of product surface all disappear when exciting visible fluorescence and inverse present etching treat recognition coded identifier design sketch；
Fig. 4 adopts the product surface original graph of prior art shooting and treats the design sketch of recognition coded identifier；
Fig. 5 is the method step flow chart of the embodiment of the present invention 2.
[detailed description of the invention]
Embodiment 1, the present embodiment the recognition system of laser incising code, shown in Figure 2, including product 11, laser-induced thermal etching mechanism 12 and recognition mechanism 13.Wherein the surface of product 11 has the master pattern exciting visible fluorescence material.Laser-induced thermal etching mechanism 12 etches coded identifier to be distinguished in the optional position of the master pattern on product 11 surface, makes and treats recognition product.Recognition mechanism 13 specifically include: excitation source 131 and be placed in excitation source 131 and treat recognition product between bandpass filter 132, filming apparatus 133 and be placed in filming apparatus 133 and the visible ray high-pass filter 134 treated between recognition product, and the identification device 135 being connected with filming apparatus 133.
In implementing, laser-induced thermal etching mechanism 12 etches coded identifier to be distinguished in the optional position of the master pattern on product 11 surface, without the existence considering master pattern, it is possible to arbitrarily overlapping.Make after recognition product, the recognition mechanism 13 being associated is arrived via transporters such as conveyer belts, recognition mechanism 13 can carry out under dark room conditions, the light therethrough bandpass filter 132 that excitation source 131 sends irradiates treats recognition product, to excite the visible fluorescence of the visible fluorescence material master pattern treating recognition product surface, so that the light that excitation source 131 sends is relatively pure specific wavelength, can excitation source 131 and treat recognition product between install one or more pieces bandpass filters additional.The visible fluorescence being excited is through after visible ray high-pass filter 134, filming apparatus 133 photographs the image that the visible fluorescence that is excited presents, the light sent due to excitation source 131 arrives after recognition product, a part of light has excited, some light is directly mirrored, for the visible fluorescence making 133 receptions of filming apparatus be excited, can filming apparatus 133 and treat recognition product between install one or more pieces visible ray high-pass filters 134 additional.More specifically, excitation source 131 can be flat lighting source, line lighting source, or some lighting source.Filming apparatus 133 can be that map device is adopted in face, or map device adopted by line.The wavelength exciting visible fluorescence material and excitation source 131 matches, the wavelength of excitation source 131 can be UV-visible wavelength or Infrared wavelength, when excitation source 131 is irradiated in time distinguishing product by bandpass filter 132, inspire the visible fluorescence of another wavelength.Part owing to needing to be distinguished coded identifier at product 11 surface etching is absent from visible fluorescence material, therefore in the image that the visible fluorescence being excited presents, etching treat that recognition coded identifier can be substantially distinguished from the part being coated with visible fluorescence material, and then be easy to follow-up identification device 135 from the image presented, distinguish coded identifier.
Visible, the recognition system of the laser incising code of the present embodiment is when laser-induced thermal etching coded identifier, it is not necessary to consider the location work of laser machine, can in the optional position of product surface, arbitrarily overlapping etching；Distinguish coded identifier time, etching treat recognition coded identifier can be substantially distinguished from the part being coated with visible fluorescence material, can accurately complete read operation.The master pattern that effect can be product surface that implements of the present embodiment all disappears when exciting visible fluorescence, and inverse present etching treat recognition coded identifier, design sketch that specifically can be shown in Figure 3, can also be that the master pattern of product surface is presented when exciting visible fluorescence, and significant difference present etching treat recognition coded identifier, this is with the optical source wavelength of selective exitation light source 131, bandpass filter 132, visible ray high-pass filter 134, and excite visible fluorescence material relevant, can select according to real needs.Another referring also to the employing prior art shown in Fig. 4 the product surface original graph shot and the design sketch treating recognition coded identifier, contrast visible, treating shown in Fig. 4 is distinguished coded identifier and is mixed with product surface original graph, make follow-up read operation difficulty bigger and more error-prone, and adopt the recognition system of the laser incising code of the present embodiment, as it is shown on figure 3, treat that recognition coded identifier is high-visible so that follow-up read operation is simple, accurate.
Embodiment 2, the present embodiment the reading method of laser incising code, adopt the recognition system of the laser incising code of above-described embodiment 1 to implement, shown in Figure 5, including following key step:
S21, etching coded identifier to be distinguished in the optional position of the master pattern of product surface, make and treat recognition product, the master pattern of product surface adopts and excites visible fluorescence material.
Concrete, coded identifier to be distinguished can be etched in the optional position of the master pattern of product surface, without the existence considering master pattern, it is possible to arbitrarily overlapping.
S22, excitation source distinguish product by treating described in bandpass filter irradiation, to excite visible fluorescence.
Concrete can carry out under dark room conditions, make after recognition product, the light therethrough bandpass filter that excitation source sends irradiates treats recognition product, to excite the visible fluorescence of the visible fluorescence material master pattern treating recognition product surface, so that the light that excitation source sends is relatively pure specific wavelength, can excitation source and treat recognition product between install one or more pieces bandpass filters additional.
The image that the visible fluorescence that S23, filming apparatus are excited by the shooting of visible ray high-pass filter presents.
Concrete can carry out under dark room conditions, the visible fluorescence being excited is through after visible ray high-pass filter, filming apparatus photographs the image that the visible fluorescence that is excited presents, the light sent due to excitation source arrives after recognition product, a part of light has excited, some light is directly mirrored, the visible fluorescence being excited to make filming apparatus only receive, can filming apparatus and treat recognition product between install one or more pieces visible ray high-pass filters additional.More specifically, excitation source can be flat lighting source, line lighting source, or some lighting source.Filming apparatus can be that map device is adopted in face, or map device adopted by line.The wavelength exciting visible fluorescence material and excitation source matches, and the wavelength of excitation source can be UV-visible wavelength or Infrared wavelength, when excitation source is irradiated in time distinguishing product by bandpass filter, inspires the visible fluorescence of another wavelength.
S24, identification device distinguish coded identifier from the image presented.
Concrete, part owing to needing to be distinguished coded identifier in product surface etching is absent from visible fluorescence material, therefore in the image that the visible fluorescence being excited presents, what etch treats that recognition coded identifier can be substantially distinguished from the part being coated with visible fluorescence material, and then is easy to identify that device distinguishes coded identifier from the image presented.
Visible, the reading method of the laser incising code of the present embodiment is when laser-induced thermal etching coded identifier, it is not necessary to consider the location work of laser machine, can in the optional position of product surface, arbitrarily overlapping etching；Distinguish coded identifier time, etching treat recognition coded identifier can be substantially distinguished from the part being coated with visible fluorescence material, can accurately complete read operation.The master pattern that effect can be product surface that implements of the present embodiment all disappears when exciting visible fluorescence, and inverse present etching treat recognition coded identifier, design sketch that specifically can be shown in Figure 3, can also be that the master pattern of product surface is presented when exciting visible fluorescence, and significant difference present etching treat recognition coded identifier, this is with the optical source wavelength of selective exitation light source, bandpass filter, visible ray high-pass filter, and excite visible fluorescence material relevant, can select according to real needs.Another referring also to the employing prior art shown in Fig. 4 the product surface original graph shot and the design sketch treating recognition coded identifier, contrast visible, treating shown in Fig. 4 is distinguished coded identifier and is mixed with product surface original graph, make follow-up read operation difficulty bigger and more error-prone, and adopt the reading method of the laser incising code of the present embodiment, as it is shown on figure 3, treat that recognition coded identifier is high-visible so that follow-up read operation is simple, accurate.
Here description of the invention and application are all simply illustrative and exemplary, are not intended to limit the scope of the invention in above-described embodiment.The deformation of embodiments disclosed herein and change are entirely possible, and for those skilled in the art, the various parts with equivalence of replacing of embodiment are all known.Those skilled in the art it is also clear that, when without departing from the spirit of the present invention or substitutive characteristics, the present invention can in other forms, structure, layout, ratio, and realize with other assembly, material and parts, and when without departing from the scope of the invention and spirit, it is possible to embodiments disclosed herein is carried out other deformation and changes.
Claims (10)
1. the recognition system of a laser incising code, it is characterised in that including: product, laser-induced thermal etching mechanism and recognition mechanism；
Wherein, the surface of described product has the master pattern exciting visible fluorescence material；
Described laser-induced thermal etching mechanism etches coded identifier to be distinguished in the optional position of the master pattern of described product surface, makes and treats recognition product；
Described recognition mechanism include: excitation source and be placed in described excitation source and treat recognition product between bandpass filter, filming apparatus and be placed in described filming apparatus and the visible ray high-pass filter treated between recognition product, and the identification device being connected with described filming apparatus；
Described excitation source is irradiated by bandpass filter treats recognition product, to excite visible fluorescence, the image that the visible fluorescence that described filming apparatus is excited by the shooting of visible ray high-pass filter presents, is distinguished coded identifier by described identification device from the image presented.
2. the recognition system of laser incising code as claimed in claim 1, it is characterised in that described bandpass filter is a piece of, or is at least two.
3. the recognition system of laser incising code as claimed in claim 1, it is characterised in that described visible ray high-pass filter is a piece of, or is at least two.
4. the recognition system of laser incising code as claimed in claim 1, it is characterised in that described excitation source is flat lighting source, line lighting source, or some lighting source.
5. the recognition system of laser incising code as claimed in claim 1, it is characterised in that described filming apparatus is that map device is adopted in face, or map device adopted by line.
6. the reading method of a laser incising code, it is characterised in that comprise the following steps:
S1, etching coded identifier to be distinguished in the optional position of the master pattern of product surface, make and treat recognition product, the master pattern of described product surface adopts and excites visible fluorescence material；
S2, excitation source distinguish product by treating described in bandpass filter irradiation, to excite visible fluorescence；
The image that the visible fluorescence that S3, filming apparatus are excited by the shooting of visible ray high-pass filter presents；
S4, identification device distinguish coded identifier from the image presented；
The reading method of described laser incising code adopts the recognition system of the laser incising code of any one of claim 1 to 5 to implement.
7. the reading method of laser incising code as claimed in claim 6, it is characterized in that, the described wavelength exciting visible fluorescence material and described excitation source matches, when excitation source by bandpass filter irradiate described in until recognition product time, inspire the visible fluorescence of another wavelength.
8. the reading method of laser incising code as claimed in claim 6, it is characterised in that the wavelength of described excitation source is UV-visible wavelength or Infrared wavelength.
9. the reading method of laser incising code as claimed in claim 6, it is characterised in that improve light source purity by described bandpass filter.
10. the reading method of laser incising code as claimed in claim 6, it is characterised in that make filming apparatus only receive the image that visible fluorescence presents by described visible ray high-pass filter.
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| CN201610066914.7A CN105760866A (en) | 2016-01-29 | 2016-01-29 | Laser coding identification and reading system and method |
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| CN201610066914.7A CN105760866A (en) | 2016-01-29 | 2016-01-29 | Laser coding identification and reading system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109830171A (en) * | 2018-12-11 | 2019-05-31 | 杭州中粮包装有限公司 | It is a kind of mark and preparation method thereof, reading method |
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| US8479995B2 (en) * | 2011-09-29 | 2013-07-09 | Ncr Corporation | Hybrid optical code scanner and system |
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| CN101339130A (en) * | 2008-08-06 | 2009-01-07 | 安徽奥赛精密仪器有限公司 | Edible fungus fluorescent whitening agent detector |
| CN101738829A (en) * | 2010-01-05 | 2010-06-16 | 刘思健 | Method and device for photographing fluorescent ink |
| US8479995B2 (en) * | 2011-09-29 | 2013-07-09 | Ncr Corporation | Hybrid optical code scanner and system |
| CN102488564A (en) * | 2011-12-15 | 2012-06-13 | 杭州电子科技大学 | Dental plaque detector capable of imaging by aid of fluorescent area arrays |
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Application publication date: 20160713 |