CN108241812A - A kind of bar code scan equipment for the dual trigger pattern for identifying bill - Google Patents
A kind of bar code scan equipment for the dual trigger pattern for identifying bill Download PDFInfo
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- CN108241812A CN108241812A CN201611214690.6A CN201611214690A CN108241812A CN 108241812 A CN108241812 A CN 108241812A CN 201611214690 A CN201611214690 A CN 201611214690A CN 108241812 A CN108241812 A CN 108241812A
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- bar code
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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
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms
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- Inspection Of Paper Currency And Valuable Securities (AREA)
Abstract
A kind of bar code scan equipment for the dual trigger pattern for identifying bill comprising the first trigger source and the second trigger source, respectively generates corresponding interrupt.Central processing unit starts corresponding bar code reading module, there is different bar code reading modules different illuminations and sighting system to be adapted the bar code of different types of bar code and different printing material, and user and equipment is facilitated to identify bar code according to the interruption received.When a certain bar code reading module works, bar code decoding Coordination module accesses the corresponding interface of bar code decoding chip, it is only necessary to trial is decoded from the partial decoding of h library of bar code decoding chip, decoding number of attempt is reduced, shortens decoding time, improve decoding efficiency.
Description
Technical field
The present invention relates to a kind of bar code scan equipment with multiple operating mode, relate in particular to a kind of identification bill
The bar code scan equipment of dual trigger pattern.
Background technology
Bar code includes one-dimensional bar code and two-dimensional bar, due to its easy error correction, can carry that information capacity is big, is fabricated to
This cheap advantage is commonly employed in automatic identification fields such as industrial flow control, warehouse logistics and postal managements.
In these process management, by quickly successfully identifying bar code, improving working efficiency has major and immediate significance.One-dimensional bar code
With Quick Response Code making an inventory and tracing commonly used in commodity, one-dimension code is since data-carrying capacity is limited, usually as price data
The carrier of carrier and product type.It possesses the advantage of relativity of information bigger to Quick Response Code, can be used as in production, transportational process
The record carrier of flow.This two kinds of symbols are usually existed simultaneously in the packaging of commodity.
Bar code scan equipment of the prior art is all using one shot pattern, such as single board computer, single-button triggering.It faces
The bar code type applied at present gradually increases, the situation that various bar codes combinations gradually emerge in large numbers, when article or bill surface presence can
It is particularly in certain anti-counterfeit fields, Quick Response Code is invisible as naked eyes simultaneously during the one-dimensional and/or two-dimensional bar code of scanning recognition
Invisible antitheft information carrier.It needs to identify that any bar code feeds back to user actually, the application of one shot pattern is just shown slightly not
Foot.One shot pattern, bar code recognizing apparatus is the same without normal direction artificial intelligence, and it is one-dimensional bar code or stealth to identify this at once
Two-dimensional bar, it can only be decoded trial one by one by the decoding algorithm of all bar codes of storage, until decoding
Until success.This will result in the waste of decoding resource, be taken so as to increase decoding.When a certain bar code and other kinds of item
When shape code feature is similar, the decoded information of mistake is easily generated to a certain extent.
Invention content
For this purpose, the technical problems to be solved by the invention are under one shot pattern in the prior art that bar code decoding equipment consumes
When it is longer, easily generate mistake decoded information.
In order to solve the above technical problems, the used technical solution of the present invention：
A kind of bar code scan equipment for the dual trigger pattern for identifying bill, comprising with lower module：
First trigger source generates first and interrupts, and central processing unit receives first and interrupts, and orders the first bar code reading module
Perform bar code reading decoding task；
Second trigger source generates second and interrupts, and central processing unit receives second and interrupts, and orders the second bar code reading module
Perform bar code reading decoding task；
Central processing unit receives the interruption that the first trigger source or the second trigger source are sent, and is opened according to interrupt notification
Corresponding bar code reading module；
First bar code reading module, comprising：Spherical surface camera lens immediately ahead of module casing center, the filter set after camera lens
Mating plate, the infrared cmos image sensor uprightly set after optical filter, the first lighting system, the first sighting system；
Second bar code reading module, comprising：Strip camera lens immediately ahead of module casing center, the setting of camera lens rear
Strip ccd image sensor, the second lighting system, the second sighting system；
Bar code decoding Coordination module when the first bar code reading module performs bar code reading decoding task, accesses bar code solution
Code chip first decodes the interface in library；When the second bar code reading module performs bar code reading decoding task, bar code decoding is accessed
Chip second decodes the interface in library；
Bar code decoding chip is field programmable gate array, has the first decoding library and the second decoding library, the first decoding library
With the second decoding library there is corresponding interface to be connected with corresponding bar code reading module.
First lighting system uses distributed lighting, and the first sighting system forms red cross on the bar code surface aimed at
Type visible laser hot spot.
Second lighting system forms green using centralized rectangular illumination, the second sighting system on the bar code surface aimed at
Strip light spots.
The bar code reading module is also comprising recognition feedback indicating mode, when the first bar code reading module or the second bar code are known
After reading module bar code reading successfully decoded, the visible light spot for being different from the first sighting system and the second sighting system is generated.
The slot for placing optical filter is provided in the first bar code reading module housing.
The above technical solution of the present invention has the following advantages over the prior art:
1. a kind of bar code scan equipment for the dual trigger pattern for identifying bill, comprising the first trigger source and the second trigger source,
Respectively generate corresponding interrupt.Central processing unit starts corresponding bar code reading module according to the interruption received, different
There is bar code reading module different illuminations and sighting system to be adapted the bar code of different types of bar code and different printing material,
User and equipment is facilitated to identify bar code.When a certain bar code reading module works, bar code decoding Coordination module access bar code solution
The corresponding interface of code chip, it is only necessary to trial is decoded from the partial decoding of h library of bar code decoding chip, decoding is reduced and attempts
Number shortens decoding time, improves decoding efficiency.
2. a kind of bar code scan equipment for the dual trigger pattern for identifying bill, the first lighting system use distributed lighting,
Facilitate illumination light filling of the imaging sensor to rectangle two-dimensional bar, cross spot is convenient to take aim at rectangle two-dimensional bar
It is accurate.
3. a kind of bar code scan equipment for the dual trigger pattern for identifying bill, the second light illumination mode are shone using centralized matrix
It is bright, facilitate illumination light filling of the imaging sensor to strip one-dimensional bar code.Shaped laser spot is also more suitable for the aiming of one-dimensional barcode.
4. a kind of bar code scan equipment for the dual trigger pattern for identifying bill, after bar code decoding success, on bar code surface
Projection generates the visible light spot for being different from first and second sighting system, intuitive to prompt the success of user's bar code decoding.
5. a kind of bar code scan equipment for the dual trigger pattern for identifying bill, optical filter are alternatively arranged on the first bar code
It distinguishes in module casing, can identify the bar code image of different wave length.
Description of the drawings
In order to make the content of the present invention more clearly understood, it below according to specific embodiments of the present invention and combines
Attached drawing, the present invention is described in further detail, wherein,
Fig. 1 is a kind of system block diagram of the bar code scan equipment for the dual trigger pattern for identifying bill of the present invention；
Fig. 2 is a kind of a kind of surface structure signal of the bar code scan equipment for the dual trigger pattern for identifying bill of the present invention
Figure；
Fig. 3 is a kind of first bar code reading module of the bar code scan equipment for the dual trigger pattern for identifying bill of the present invention
Structure diagram；
Fig. 4 is a kind of another surface structure signal of the bar code scan equipment for the dual trigger pattern for identifying bill of the present invention
Figure；
Fig. 5 is a kind of second bar code reading module of the bar code scan equipment for the dual trigger pattern for identifying bill of the present invention
Structure diagram；
Fig. 6 is a kind of first bar code reading module of the bar code scan equipment for the dual trigger pattern for identifying bill of the present invention
The schematic diagram of finder lens.
Reference numeral：The first trigger sources of 1-；The second trigger sources of 2-；3- central processing unit；11- the first bar code reading moulds
Group；111- spherical surface camera lenses；The first lighting systems of 112-；The first sighting systems of 113-；The second bar code reading modules of 21-；211- items
Shape camera lens；The second lighting systems of 212-；The second sighting systems of 213-；5- bar code decoding Coordination modules；6- bar code decoding chips.
Specific embodiment
A kind of bar code scan equipment for the dual trigger pattern for identifying bill, as shown in Figure 1, 2, comprising with lower module：
First trigger source 1 generates first and interrupts, and central processing unit receives first and interrupts, and orders the first bar code reading mould
Group performs bar code reading decoding task.
Second trigger source 2 generates second and interrupts, and central processing unit receives second and interrupts, and orders the second bar code reading mould
Group performs bar code reading decoding task.
Hardware interrupts are an asynchronous signals, are demonstrated the need for note that or needing to change in one synchronous event of execution.Hardware
Interruption is a kind of mode for the quality time that waste processor is avoided in terms of polling loop, waiting external event.As one
Independent has control line system.Hardware interrupts in the present invention are external interrupts.2 conduct of first trigger source 1 and the second trigger source
One hardware switch, can be set respectively, can also be integrated in a switch (trigger of such as bar code scanner), such as Fig. 4 institutes
Show, after wherein bar code reading module 4 is arranged on protective glass, do not show.
Central processing unit 3 receives the interruption that the first trigger source or the second trigger source are sent, and is opened according to interrupt notification
Corresponding bar code reading module.In hardware interrupts, central processing unit can be with auto-steering interrupt handling routine, compared in software
It is disconnected, improve execution efficiency.
First bar code reading module 11, comprising：Spherical surface camera lens 111 immediately ahead of module casing center is set after camera lens
The optical filter put, the infrared cmos image sensor uprightly set after optical filter, the first lighting system 112, the first sighting system
113.As shown in Figure 3.Comprising：Spherical surface camera lens 41 immediately ahead of module casing center, since bar code reading environment is unlike hand
The use environment of the digital products such as machine, here preferably using glass lens, high temperature resistant, humidity.The optical filtering set after camera lens
The reason of piece, setting optical filter, is, as existing CMOS is continued to develop, pixel and the number of colors supported are continuously improved, bar code
Decoding is used as a kind of commercial Application, it is desirable that the item of the higher black and white of image sharpness, contrast or certain specific color
Code image, so needing to filter out the light of other unnecessary wavelengths.The infrared cmos image sensor uprightly set after optical filter.According to
Bright system has more infrared LEDs.Due to following in certain anti-fake or guarantor with the raising of producer and the sense of security of users
Close application scenario, Quick Response Code may be used the sightless infrared ink of human eye and be printed upon some position.User is only needed
The range of Quick Response Code that may be present known aimed at, is decoded and can be obtained information needed.It is therefore desirable to using infrared
CMOS and infrared LED cooperation image use.
Second bar code reading module 21, comprising：Strip camera lens 211 immediately ahead of module casing center, camera lens rear
The strip ccd image sensor of setting, the second lighting system 212, the second sighting system 213.As shown in Figure 5.Strip camera lens energy
Strip bar code is better adapted to, is particularly using strip ccd image, will not can be made as traditional spherical camera lens
Into pattern distortion, bar code decoding chip decoding is influenced.
Bar code decoding Coordination module 5 when the first bar code reading module performs bar code reading decoding task, accesses bar code solution
Code chip first decodes the interface in library；When the second bar code reading module performs bar code reading decoding task, bar code decoding is accessed
Chip second decodes the interface in library.
Bar code decoding chip 6 is field programmable gate array, has the first decoding library and the second decoding library, the first decoding
There is corresponding interface to be connected with corresponding bar code reading module for library and the second decoding library.Signal of the prior art may be used
Coordination module.0390 chip of New World computer joint-stock company may be used.Compared to more traditional CPU or MCU cooperations RAM, ROM
Bar code decoding is carried out by software decoding algorithm, due to using pure hardware circuit, decoding speed improves manyfold for hardware decoding.
A kind of bar code scan equipment for the dual trigger pattern for identifying bill, comprising the first trigger source and the second trigger source, respectively
It is interrupted accordingly from generating.Central processing unit starts corresponding bar code reading module, different items according to the interruption received
There is code recognition module different illuminations and sighting system to be adapted the bar code of different types of bar code and different printing material, side
Just user and equipment identification bar code.When a certain bar code reading module works, bar code decoding Coordination module access bar code decoding
The corresponding interface of chip, it is only necessary to trial is decoded from the partial decoding of h library of bar code decoding chip, reduces decoding trial time
Number shortens decoding time, improves decoding efficiency.
First lighting system 112 uses distributed lighting, and the first sighting system forms red on the bar code surface aimed at
Cross visible laser hot spot.The convenient aiming to rectangle two-dimensional bar of cross spot.The aiming of first sighting system is saturating
Diffraction eyeglass may be used in mirror, by red laser diode 2 by forming red cross by finder lens after collimation lens
Shape hot spot.As shown in fig. 6, mirror body is transparent, mirror body one side is in smooth；Another side is divided into upper and lower two points with a pair of of linea angulata
Area, A areas and B areas；Wherein：
A areas are divided into six impartial regions of height from top to bottom, and first region is twill face, Two Areas is light
Sliding surface, remaining region are repeated in arranging with this sequence twill face, shiny surface；
B areas are divided into six regions of width equalization from left to right, and first region is shiny surface, Two Areas is oblique
Line face, remaining region are repeated in arranging with this sequence shiny surface, twill face.
Second lighting system 212 is formed using centralized rectangular illumination, the second sighting system on the bar code surface aimed at
The strip light spots of green.Facilitate the aiming of strip bar code.The lens for generating green strip visible light spot are sub- for a column
Gram force or glass lens.
A kind of bar code scan equipment of dual trigger pattern for identifying bill is also comprising recognition feedback indicating mode, when the
After one bar code reading module or the second bar code reading module bar code reading successfully decoded, generation is different from the first sighting system and the
The visible light spot of two sighting systems.Can be that a round lens and a light are set beside first, second bar code reading module
Source, projection one dot of generation.Either with figuratum diffraction lens, generate with figuratum hot spot, such as producer logo.
Also such as " OK " printed words etc..Intuitive prompting user bar code decoding success.
The slot for placing optical filter is provided in the first bar code reading module housing.Facilitate user according to different uses
Optical wavelength is replaced.
Obviously, the above embodiments are merely examples for clarifying the description, and is not intended to limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And the obvious variation thus extended out or
Among changing still in the protection domain of the invention.
Claims (5)
1. a kind of bar code scan equipment for the dual trigger pattern for identifying bill, which is characterized in that comprising with lower module：
First trigger source generates first and interrupts, and central processing unit receives first and interrupts, and the first bar code reading module of order performs
Bar code reading decoding task；
Second trigger source generates second and interrupts, and central processing unit receives second and interrupts, and the second bar code reading module of order performs
Bar code reading decoding task；
Central processing unit receives the interruption that the first trigger source or the second trigger source are sent, and is opened and corresponded to according to interrupt notification
Bar code reading module；
First bar code reading module, comprising：Spherical surface camera lens immediately ahead of module casing center, the optical filtering set after camera lens
Piece, the infrared cmos image sensor uprightly set after optical filter, the first lighting system, the first sighting system；
Second bar code reading module, comprising：Strip camera lens immediately ahead of module casing center, the strip of camera lens rear setting
Ccd image sensor, the second lighting system, the second sighting system；
Bar code decoding Coordination module when the first bar code reading module performs bar code reading decoding task, accesses bar code decoding core
Piece first decodes the interface in library；When the second bar code reading module performs bar code reading decoding task, bar code decoding chip is accessed
The interface in the second decoding library；
Bar code decoding chip is field programmable gate array, has the first decoding library and the second decoding library, the first decoding library and the
There is corresponding interface to be connected with corresponding bar code reading module in two decoding libraries.
2. a kind of bar code scan equipment of dual trigger pattern for identifying bill according to claim 1, which is characterized in that the
One lighting system is illuminated using centralization, and the first sighting system forms red cross visible laser on the bar code surface aimed at
Hot spot.
3. a kind of bar code scan equipment of dual trigger pattern for identifying bill according to claim 1 or 2, feature exist
In the second lighting system forms the item of green on the bar code surface aimed at using centralized rectangular illumination, the second sighting system
Shape hot spot.
4. according to a kind of bar code scan equipment of the dual trigger pattern of any identification bills of claim 1-3, feature
It is, also comprising recognition feedback indicating mode, when the first bar code reading module or the second bar code reading module bar code reading decode
After success, the visible light spot for being different from the first sighting system and the second sighting system is generated.
5. a kind of bar code scan equipment of dual trigger pattern for identifying bill according to claim 3 or 4, feature exist
In, be provided in the first bar code reading module housing place optical filter slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611214690.6A CN108241812A (en) | 2016-12-26 | 2016-12-26 | A kind of bar code scan equipment for the dual trigger pattern for identifying bill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611214690.6A CN108241812A (en) | 2016-12-26 | 2016-12-26 | A kind of bar code scan equipment for the dual trigger pattern for identifying bill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108241812A true CN108241812A (en) | 2018-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611214690.6A Pending CN108241812A (en) | 2016-12-26 | 2016-12-26 | A kind of bar code scan equipment for the dual trigger pattern for identifying bill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108241812A (en) |
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2016
- 2016-12-26 CN CN201611214690.6A patent/CN108241812A/en active Pending
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Application publication date: 20180703 |