CN110298209A - A kind of three-dimension code information reading system and method - Google Patents
A kind of three-dimension code information reading system and method Download PDFInfo
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- CN110298209A CN110298209A CN201910609225.XA CN201910609225A CN110298209A CN 110298209 A CN110298209 A CN 110298209A CN 201910609225 A CN201910609225 A CN 201910609225A CN 110298209 A CN110298209 A CN 110298209A
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- dimension code
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- code information
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
- G06K7/143—Glyph-codes
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Abstract
The present invention provides a kind of three-dimension code information to read system and method, the system includes: to be adapted with three-dimension code surface vertical depth and the light source of the incident ray comprising several different wave lengths for issuing, receive the collimation lens and extender lens of incident ray, parallel rays is formed by by extender lens to be received by light beam classifier, and vertical incidence has the surface of step to three-dimension code, the transmitting light that is reflected by the surface that beam splitter receives three-dimension code is simultaneously input to photoelectric detector, the light intensity signal for the transmitting light that photoelectric detector is reflected according to the surface of three-dimension code parse and outputs level signals.In the present invention, three-dimension code depression in the surface region is based on opposite in phase with non-sunk area institute's reflection light and interferes, and to limit the light intensity that the sunk area of different depth is formed by reflection light, realizes the quick reading to three-dimension code information.
Description
Technical field
The present invention relates to coding techniques field, more particularly to a kind of three code information read systems and based on the system one
Kind three-dimension code information-reading method.
Background technique
Two dimensional code is to carry out identification two-dimensional barcode information by the color of bar coded information unit.Two dimensional code is to use
According to certain rules in the chequered with black and white graphic recording data symbol information of plane distribution, it compares certain specific set figure
Traditional one-dimensional bar code can store more information, can also indicate more data types, and user is usually decoded by two dimensional code
To obtain the information stored in two dimensional code；Wherein, QR code is one of the most common type, and supports the two dimension to encoding of chinese characters earliest
Bar code.
In order to increase data capacity entrained by the two dimensional code with planar structure, a kind of mode is to be made two dimensional code very
Greatly, it but does big two dimensional code and can occupy too many area；Another way is that the point of two dimensional code is made small, however two dimensional code
Information statement, publication and area depending on black and white lattice in two-dimensional bar code figure, which makes it in recognition, to its figure
The acquisition of shape requires to become very high, and usual fine definition and low distortion are the most fundamental requirements, if doing the point of small two dimensional code, no
Conducive to the correction of scalloping, while also being limited by resolution ratio.To solve, conventional two-dimensional code information memory capacity is lesser to be asked
, there is three-dimension code at present in topic.Notification number is that the Chinese utility model patent of CN206892906U discloses a kind of stereochemical structure
Three-dimension code and anti-counterfeit structure, but there is no solve how to read the three-dimension code for having three-dimensional structure in physical space for the prior art
The read method of institute's characterization information.
In view of this, it is necessary to three-dimension code information-reading method in the prior art be improved, to solve above-mentioned ask
Topic.
Summary of the invention
It is an object of the invention to disclose a kind of three-dimension code information to read system and method, three-dimension code is believed to realize
Efficient, the quick reading of breath, and the three-dimension code information of readily identified tool physical structure.
To realize above-mentioned first purpose, the present invention provides a kind of three-dimension code information to read system, comprising: for issuing
It is adapted with three-dimension code surface vertical depth and the light source of the incident ray comprising several different wave lengths, receives the standard of incident ray
Straight lens and extender lens, are formed by parallel rays by extender lens and are received by light beam classifier, and vertical incidence is extremely
Three-dimension code has the surface of step, and the transmitting light reflected by the surface that the beam splitter receives three-dimension code is simultaneously input to
The light intensity signal of photoelectric detector, the transmitting light that the photoelectric detector is reflected according to the surface of three-dimension code is parsed simultaneously
Outputs level signals.
As a further improvement of the present invention, the photoelectric detector passes through the analog to digital conversion circuit built in it for the electricity
Ordinary mail number is reduced into three-dimension code information entrained by three-dimension code.
As a further improvement of the present invention, the quantity and three-dimensional of the incident ray for the tool different wave length that the light source issues
It is equal that code table face is formed by numbers of steps.
As a further improvement of the present invention, the wavelength of the incident ray is that be formed by step opposite on three-dimension code surface
1/4 of difference in height between the minimum point of three-dimension code in vertical direction.
The light source is LED or and laser generator as a further improvement of the present invention.
As a further improvement of the present invention, the wavelength for the incident ray that the light source issues is 300~10000nm.
To realize above-mentioned second purpose, present invention further teaches a kind of three-dimension code information-reading methods, which is characterized in that
It reads system using the three-dimension code information as described in any of the above-described innovation and creation to be scanned three-dimension code, according to three-dimension code
The transmitting light that is reflected of surface, be reduced into three-dimension code information entrained by three-dimension code.
Compared with prior art, the beneficial effects of the present invention are: the incidence on three-dimension code surface will be incident in the present invention
The wavelength of light is chosen to be three-dimension code surface and is formed by step relative between three-dimension code minimum point in vertical direction
The 1/4 of difference in height, and difference included in incident ray is determined according to the step that three-dimension code surface is formed by tool difference in height
The incident ray of wavelength, so that three-dimension code depression in the surface region is based on opposite in phase with non-sunk area institute's reflection light and sends out
Raw interference, to limit the light intensity that the sunk area of different depth is formed by reflection light, and it is true hereby based on different light intensity
The fixed three-dimension code is based on three-dimension code information entrained by sunk area and non-sunk area, to realize to three-dimension code information
Quickly read.
Detailed description of the invention
Fig. 1 is the system schematic that a kind of three-dimension code information of the present invention reads system；
Fig. 2 is that there are three the localized micro schematic diagrames of step for three-dimension code surface tool；
Fig. 3 is carried out by the light intensity signal for the transmitting light that three steps that photoelectric detector goes out according to Fig.2, reflect
It parses and exports and be formed by level signal schematic diagram.
Specific embodiment
The present invention is described in detail for each embodiment shown in reference to the accompanying drawing, but it should be stated that, these
Embodiment is not limitation of the present invention, those of ordinary skill in the art according to these embodiments made by function, method,
Or equivalent transformation or substitution in structure, all belong to the scope of protection of the present invention within.
It please join a kind of specific embodiment that a kind of three-dimension code information of the revealed present invention of Fig. 1 to Fig. 3 reads system.Together
When, a kind of disclosed three-dimension code information-reading method is based on the system and is achieved.Hereafter emphasis is to the three-dimension code
Information reads system and gives emphasis elaboration.The three-dimension code information-reading method is based on the three-dimension code information and reads system to three-dimension code
50 are scanned, and with the transmitting light reflected according to the surface of three-dimension code 50, are reduced into three-dimension code entrained by three-dimension code 50
Information.
The three-dimension code information reads system for being formed by ups and downs to 50 surface of three-dimension code tiled in Fig. 1
Three-dimension code information entrained by rank, hole (that is, sunk area) is read out, to restore information entrained by the three-dimension code.It should
Three-dimension code can be attached to the surface of package of any trade mark with physical features or commodity.
In the present embodiment, which reads system, comprising: for issuing and three-dimension code surface vertical depth phase
It is adapted to and includes the light source 10 of the incident ray of several different wave lengths, receives the collimation lens 20 and extender lens of incident ray
30, parallel rays is formed by by extender lens 30 and is received by light beam classifier 40, and vertical incidence to three-dimension code has platform
The surface of rank, the transmitting light reflected by the surface that the beam splitter receives three-dimension code are simultaneously input to photoelectric detector
60, the light intensity signal for the transmitting light that the photoelectric detector 60 is reflected according to the surface of three-dimension code is parsed and exports electricity
Ordinary mail number.
Join shown in Fig. 1, light source 10 issues the incident ray comprising several different wave lengths, and the wavelength or wave of incident ray
It is equal that the quantity of long range and 50 envelope of three-dimension code are formed by numbers of steps (or hole quantity).It is indicated to simplify, in conjunction with Fig. 2
With shown in Fig. 3, in the present embodiment, the surface of three-dimension code 50 forms three steps, and corresponds to shape hereby based on three steps
It is cheated at three, i.e. hole (Y1), hole (Y2), hole (Y3)；Three-dimension code 50 is defined as bank in the highest point of its vertical direction.Due to difference
The light of wavelength is formed by light intensity signal after the reflection of 50 surface different-shape of three-dimension code and is different, and therefore, can pass through
Photoelectric detector 60 receives the reflection signal for the different light intensity that three-dimension code 50 received by beam splitter 40 is reflected, with logical
Analog to digital converter (A/D converter circuit) the reduction three-dimension code 50 built in it is crossed based on letter entrained by above-mentioned different-shape
Breath.It is such based on three-dimension code 50 carry information either commodity attribute information, be also possible to commodity anti-counterfeiting information or
The other kinds of encryption information of person.The level signal is reduced by photoelectric detector 60 by the analog to digital conversion circuit built in it
Three-dimension code information entrained by three-dimension code 50.
In the present embodiment, the quantity and three-dimension code surface institute shape of the incident ray for the tool different wave length which issues
At numbers of steps it is equal.The wavelength of the incident ray is that three-dimension code surface is formed by step relative to three-dimension code vertical
1/4 of the difference in height between minimum point on direction.Light source 10 is LED or and laser generator.The incidence that light source 10 issues
The wavelength of light is the composite light source in 300~10000nm (near ultraviolet to infrared band) range, and corresponding step depth should be
Within the scope of 75nm~2500nm.Such as: there are three the holes of different depth for three-dimension code 50, cheat (Y1), hole (Y2), hole (Y3) depth
Respectively 75nm, 100nm, 150nm, the wavelength for the incident ray that corresponding light source 10 is included be respectively 300nm, 400nm,
600nm.Three-dimension code 50 is formed by numbers of steps and is generally three or three or more, different wave length included in light source 10
The quantity of incident ray is corresponding with the quantity that three-dimension code 50 is formed by hole.
Specifically, in the present embodiment, the surface of three-dimension code 50 forms three steps, and three holes are consequently formed, that is, cheat
(Y1), hole (Y2), hole (Y3)；Three-dimension code 50 is defined as bank in the highest point of its vertical direction.The incident light that light source 10 issues downwards
It is λ that line, which separately includes wavelength,1、λ2、λ3The incident ray of these three different wave lengths.Incident ray passes through collimation lens 20
(collimating lens) forms directional light 21 with the point light source for issuing light source 10, and further passes through extender lens
Directional light 31 is input to light beam expand processing to directional light 21 to form directional light 31 by (Extender lens)
In separator 40.Extender lens is used to expand the diameter of parallel input light beam to biggish collimated output beam, i.e. flat in Fig. 1
Row light 31.Beam splitter 40 is used to the directional light 31 simultaneously comprising different wave length being based on wavelength to carry out light separation, with logical
The scanning light beam for crossing the wavelength of particular range is scanned the surface of three-dimension code 50, and further receives by 50 surface of three-dimension code
The reflection light reflected.It is indicated to simplify, is formed by the different scanning light beams and warp of multiple wavelength from beam splitter 40
It crosses the light unification reflected on 50 surface of three-dimension code to be marked with light 41, those skilled in the art know, such light 41
It is bidirectional optical path, and there are sequencings.Scanning light beam vertical irradiation is on the surface of three-dimension code 50.When scanning light beam is incident upon
When forming the region of bank, scanning light beam is all reflected, and when scanning light beam is incident upon hole, corrugated generation is curved around hole
It is bent.
In the present embodiment, since incident ray (is formed by that multiple wavelength are different to be swept from beam splitter 40
Retouch light beam) wavelength be that three-dimension code surface is formed by step relative to the height between three-dimension code minimum point in vertical direction
The 1/4 of degree difference, and specifically: incident ray λ1Wavelength be hole (Y1) and bank between be formed by the 1/4 of vertical height, it is incident
Light λ2Wavelength be hole (Y2) and bank between be formed by the 1/4 of vertical height, incident ray λ3Wavelength be hole (Y3) and bank
Between be formed by the 1/4 of vertical height.The technical solution that type and wavelength based on above-mentioned wavelength and hole depth are selected, so that
It cheats and destructive interference mutually occurs instead with the reflective phase of bank, (Y is cheated with limitation1), hole (Y2), hole (Y3) it is formed by reflected light
The light intensity of line, beam splitter 40 receive the reflection light of different light intensity and are sent to photoelectric detector 60, to reflection light into
Row light-intensity test, can be by parse simultaneously outputs level signals to light intensity signal.In conjunction with shown in Fig. 2 and Fig. 3, by light beam
After separator 40 is incident to the surface of three-dimension code 50 to the scanning light beam that the surface of three-dimension code 50 is scanned, bank (X1) and bank
(X2) intensity of reflection light that is reflected is higher than hole (Y1), hole (Y2), hole (Y3) it is formed by the light intensity of reflection light, and cheat
(Y1), hole (Y2), hole (Y3) light intensity that is formed by reflection light successively successively decreases.The light intensity of above-mentioned reflection light can be examined by photoelectricity
Survey the capture of device 60 and outputs level signals, i.e. λ1Signal 61, λ3Signal 62 and λ3Signal 63 passes through the analog-to-digital conversion electricity built in it
The level signal is reduced into three-dimension code information entrained by three-dimension code 50 by road, thus by being formed by by three-dimension code 50
The light-intensity test of reflection light carries out efficient, accurate detection based on the information that surface topography is characterized to three-dimension code 50.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of three-dimension code information reads system characterized by comprising mutually fitted for issuing with three-dimension code surface vertical depth
The light source (10) for matching and include the incident ray of several different wave lengths receives the collimation lens (20) and extender lens of incident ray
(30), it is formed by parallel rays by extender lens (30) to be received by light beam classifier (40), and vertical incidence is to three-dimensional
The surface of code tool step, the transmitting light reflected by the surface that the beam splitter receives three-dimension code are simultaneously input to photoelectricity
The light intensity signal of detector (60), the transmitting light that the photoelectric detector (60) is reflected according to the surface of three-dimension code is solved
Analyse simultaneously outputs level signals.
2. three-dimension code information according to claim 1 reads system, which is characterized in that the photoelectric detector (60) passes through
The level signal is reduced into three-dimension code information entrained by three-dimension code by the analog to digital conversion circuit built in it.
3. three-dimension code information according to claim 1 reads system, which is characterized in that the tool that the light source (10) issues is not
It is equal that the quantity of the incident ray of co-wavelength with three-dimension code surface is formed by numbers of steps.
4. three-dimension code information according to any one of claim 1 to 3 reads system, which is characterized in that the incident light
The wavelength of line is that three-dimension code surface is formed by step relative to the difference in height between three-dimension code minimum point in vertical direction
1/4.
5. three-dimension code information according to claim 4 reads system, which is characterized in that the light source (10) be LED or
And laser generator.
6. three-dimension code information according to claim 4 reads system, which is characterized in that the incidence that the light source (10) issues
The wavelength of light is 300~10000nm.
7. a kind of three-dimension code information-reading method, which is characterized in that using such as power any one of claims 1 to 6 claim
The three-dimension code information reads system and is scanned to three-dimension code, the transmitting light reflected with the surface according to three-dimension code,
It is reduced into three-dimension code information entrained by three-dimension code.
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Cited By (1)
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| CN112257483A (en) * | 2020-11-04 | 2021-01-22 | 无锡职业技术学院 | Three-dimensional code of trapezoidal convex structure and reading method |
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