CN109784113A - Scanning means and its barcode scanning method - Google Patents
Scanning means and its barcode scanning method Download PDFInfo
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- CN109784113A CN109784113A CN201811541186.6A CN201811541186A CN109784113A CN 109784113 A CN109784113 A CN 109784113A CN 201811541186 A CN201811541186 A CN 201811541186A CN 109784113 A CN109784113 A CN 109784113A
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Abstract
The present invention provides a kind of scanning means and its barcode scanning method.The scanning means includes: a scanning engine, to acquire bar code image；One main control unit, to analyze bar code image and be decoded；One storage unit, to provide memory space；The scanning means is configured to mode of learning and barcode scanning mode, under mode of learning, the main control unit controls the scanning engine and acquires bar code image, the main control unit further carries out analysis decoding to bar code image, and the exposure parameter when bar code image of successfully decoded is acquired is stored in the storage unit；Under barcode scanning mode, the main control unit calls the exposure parameter stored in the storage unit to carry out identical exposure setting to the scanning engine, to control the scanning engine acquisition bar code image, the main control unit is further analyzed and decodes bar code image.
Description
Technical field
The present invention relates to a kind of scanning means and its barcode scanning method, espespecially a kind of scanning means for improving barcode scanning efficiency and its
Barcode scanning method.
Background technique
A kind of existing bar code reader includes an imaging sensor and a main control chip, and imaging sensor is to catch
Bar code image is caught, main control chip is to decode.Generally for bar code reading efficiency is improved, imaging sensor uses automatic exposure mould
Formula, time for exposure and environmental light brightness when being captured according to former frame bar code image adjust the exposure of next frame bar code image
Time makes the time for exposure gradually converge to a desired value.However, in above-mentioned convergence process, the time for exposure usually by maximum value or
For minimum value by repeatedly converging to desired value, speed is slower, inefficient.
The present invention is in view of the above problems, provide a kind of new scanning means and its barcode scanning method, using new method and skill
Art means are to solve these problems.
Summary of the invention
For background technique problem encountered, it is an object of the present invention to a kind of scanning means and its barcode scannings
Method, the scanning means, without being exposed convergence, improve barcode scanning efficiency in barcode scanning.
To achieve the above object, invention uses following technological means:
The present invention provides a kind of barcode scanning method, wherein the barcode scanning method the following steps are included:
A: the mode of learning of scanning means is opened；
B: acquisition bar code image；
C: it successively decodes collected bar code image and judges whether to be successfully decoded；
It is such as successfully decoded, then stores the exposure parameter of scanning means when successfully decoded and carries out step D；As not successfully
Decoding, then resurvey bar code image；
D: it closes mode of learning and opens barcode scanning mode；
E: it calls the exposure parameter of storage to carry out identical exposure and is arranged and acquires bar code image；
F: collected bar code image is decoded.
Optionally, it includes acquiring bar code image using automatic exposure mode that bar code image is acquired in step B.
Optionally, when acquiring bar code image, at least two light compensating lamps alternating light filling is respectively adopted or using at least two
The light compensating lamp while light filling.
Optionally, it includes acquiring bar code image using high dynamic range mode that bar code image is resurveyed in step C, to adjust
The excessive lightness or darkness part of bar code image is saved to suitable brightness.
Optionally, the bar code acquired under mode of learning is identical with the barcode types scanned under barcode scanning mode.
Optionally, the identical bar code of type includes that code system is identical and the identical bar code of locating background.
It optionally, further include being decoded to same bar code or same type bar code many successes, and store under mode of learning
The exposure parameter of scanning means when multiple successfully decoded.
Optionally, under barcode scanning mode, the exposure parameter of scanning means when multiple successfully decoded is successively called to carry out
Exposure is arranged and successively decodes the bar code image of acquisition.
The present invention provides a kind of scanning means, and the scanning means includes:
One scanning engine, to acquire bar code image；
One main control unit, to analyze the bar code image and be decoded；
One storage unit, to provide memory space；Wherein:
The scanning means is configured to mode of learning and barcode scanning mode, under mode of learning, the main control unit control
The scanning engine acquisition bar code image is made, the main control unit further carries out analysis decoding to the bar code image, and will
Exposure parameter when the bar code image acquisition of successfully decoded is stored in the storage unit；Under barcode scanning mode, the master control list
The metacall exposure parameter stored in the storage unit carries out identical exposure to the scanning engine and is arranged, with control
The scanning engine acquires bar code image, and the main control unit is further analyzed and decodes the bar code image.
Optionally, the two sides that there are the scanning engine at least two light compensating lamps to be respectively arranged on the scanning engine, to hand over
It replaces or is illuminated from different perspectives simultaneously, to provide the illumination light of multiple angles or a variety of intensity for light filling.
Optionally, under mode of learning, the scanning means uses automatic exposure mode barcode scanning.
Optionally, under mode of learning, the scanning means has automatic exposure mode and two kinds of high dynamic range mode
The mode of bar code image is acquired, and the priority of automatic exposure mode is higher than high dynamic range mode, when automatic exposure mode is adopted
When the bar code image decoding of collection is unsuccessful, the scanning means continues to acquire bar code image using high dynamic range mode, to adjust
The excessive lightness or darkness part of bar code image is saved to suitable brightness.
Optionally, the bar code acquired under mode of learning is identical with the barcode types scanned under barcode scanning mode.
Optionally, the identical bar code of type includes that code system is identical and the identical bar code of locating background.
It optionally, further include being decoded to same bar code or same type bar code many successes, and will be more under mode of learning
The exposure parameter of the scanning engine is stored in the storage unit when secondary successfully decoded.
Optionally, under barcode scanning mode, the exposure parameter of scanning engine when multiple successfully decoded is successively called to carry out
Exposure is arranged and successively decodes the bar code image of acquisition.
Compared with prior art, the invention has the following advantages:
Under mode of learning, the exposure parameter of the storage unit storage successfully decoded；Under barcode scanning mode, the master control
The exposure parameter of cell call storage, and thus the corresponding control scanning engine acquires bar code image, receives without being exposed
It holds back, improves barcode scanning efficiency.
Detailed description of the invention
Fig. 1 is the perspective view of scanning means of the present invention；
Fig. 2 is the perspective view of scanning engine of the present invention；
Fig. 3 is the partially exploded diagram of Fig. 2；
Fig. 4 is the schematic diagram of the mainboard of scanning means of the present invention；
Fig. 5 is a kind of flow chart of barcode scanning method of scanning means of the present invention；
Fig. 6 is that exposure of the scanning means of the present invention under mode of learning restrains schematic diagram；
Fig. 7 is the odd-line pixels of imaging sensor and the exposure time series of even rows under figure high dynamic range mode
Figure；
Fig. 8 is exposure schematic diagram of the scanning means of the present invention under barcode scanning mode.
The drawing reference numeral of specific embodiment illustrates:
Scanning means 100；Shell 1；Scanning window 11；Learn button 12；Scan button 13；
Mainboard 2；Scanning engine 3；Camera lens 31；Imaging sensor 32；First light compensating lamp 33；
Second light compensating lamp 34；Optics front housing 35；Convex lens 351；Main control unit 4；Storage unit 5；
Display screen 6；Bar code B.
Specific embodiment
Purpose, structure, feature and effect to facilitate the understanding of the present invention etc., now in conjunction with attached drawing and specific implementation
The invention will be further described for mode.
Scanning means 100 of the present invention can be handheld scanner, mobile data terminal (PDA), industrial formula scanning constant instrument
Deng, as shown, below by mobile data terminal (PDA) for a kind of this preferred embodiment, to scanning means 100 of the present invention and
Its barcode scanning method does specific introduction.
As shown in Figure 1 and Figure 4, the scanning means 100 has a shell 1 and is contained in a master of the shell 1
Plate 2 and 3, main control units 4 of a scanning engine and a storage unit 5 are set on the mainboard 2, and one touch
Display screen 6 is embedded at the shell 1 to show bar code B information.
The upper end of the shell 1 has the scanning window 11 covered by perspex sheet material, and the scanning engine 3 is aobvious
The scanning window 11 is exposed to scan bar code via the scanning window 11,1 lower part of shell is under the display screen 6
Side is equipped with a study button 12 and a scan button 13, and the study button 12 is with for the press-started scanning means
100 mode of learning, barcode scanning mode of the scan button 13 for the press-started scanning means 100.
Referring to figure 2. to shown in Fig. 4, the scanning engine 3 includes a camera lens 31, positioned at the one of 31 rear of camera lens
A imaging sensor 32 encloses four light compensating lamps (33,34) around the camera lens 31 and a transparent optical front housing 35 is set
In the front of four light compensating lamps (33,34).Image of the camera lens 31 to acquire bar code B, described image sensor 32
Analog signal is converted by the image of bar code B first, and further converts digital signal for the analog signal.Described in four
Light compensating lamp (33,34) includes positioned at first light compensating lamp of a pair 33 in 31 left side of camera lens and positioned at the one of 31 right side of camera lens
To the second light compensating lamp 34, first light compensating lamp 33 is identical with the light period length of second light compensating lamp 34 and staggeredly sets
It sets, appearance weight when the fluorescent lifetime of specially described first light compensating lamp 33 and the fluorescent lifetime of second light compensating lamp 34 have half
Folded, first light compensating lamp 33 and second light compensating lamp 34 shine simultaneously at this time, and the nonoverlapping part of the two fluorescent lifetime,
First light compensating lamp 33 and second light compensating lamp 34 individually shine, and can provide multiple angles and a variety of intensity in this way
The position of illumination light, each corresponding light compensating lamp (33,34) of the optics front housing 35 is equipped with a convex lens 351 to receive
Illumination light is held back, light filling brightness is improved.
As shown in figure 4, the main control unit 4 is electrically connected at the scanning engine 3, to receive the image of bar code B
Digital signal, and further analyze and decode.The storage unit 5 is electrically connected at the main control unit 4, to store number
According to.
Referring to figure 5., shown in Fig. 6, Fig. 7 and Fig. 8, the barcode scanning method of the scanning means 100 is described in detail below:
S100: the mode of learning that study button 12 opens scanning means 100 is pressed.
S200: scanning means 100 starts the image that bar code B is acquired using automatic exposure mode.
At this point, first light compensating lamp 33 and second light compensating lamp 34, which start staggeredly to shine, carries out periodical light filling, and
Light period is configured that when first light compensating lamp 33 and second light compensating lamp 34 individually shine or shine simultaneously, described
Scanning means 100 can reach automatic exposure equilibrium state by multiple exposure convergence, to collect the suitable bar code B of brightness just
In subsequent decoding.
S300: the image of collected bar code B is successively decoded.
S400: judge whether to be successfully decoded.
It is such as successfully decoded, then the exposure parameter of the scanning means 100 is stored in when the main control unit 4 is by successfully decoded
The storage unit 5 simultaneously carries out S500.Since in auto exposure mode, the susceptibility of aperture size and imaging sensor 32 is equal
To be fixed, and since the frame per second of described image sensor 32 is usually artificially preset, according to exposure equation, variable is
Ambient light illumination and time for exposure, since ambient light illumination is mainly related with first light compensating lamp 33 and second light compensating lamp 34,
Belong to controlled range, so the exposure parameter for needing to store is preset frame per second and the time for exposure of described image sensor 32.
As shown in figure 5, then when auto exposure mode barcode scanning time-out, the scanning means 100 will be certainly such as failed decoding
The dynamic high dynamic range mode for opening the scanning engine 3 resurveys the image of bar code B.High dynamic range mode is automatic
It is carried out on the basis of exposure mode, is to carry out coarse adjustment to reach automatic exposure equilibrium state relative to auto exposure mode, and it is high
Dynamic range mode is finely tuned to obtain the image of clearer bar code B.When opening high dynamic range mode, described image is passed
Sensor 32 will be divided into multiple regions with the image of different time for exposure acquisition bar code B, please refer to shown in Fig. 6, in the present embodiment,
The time for exposure of the odd-numbered line of the pixel array (not shown, similarly hereinafter) of described image sensor 32 is constant, and the idol of pixel array
The time for exposure will be reduced several rows, and carry out barcode scanning when such as the time for exposure of even rows array being 0, and by algorithm to odd-numbered line
The image of pixel array and even rows array acquisition is synthesized, will reduce bar code B image overexposure part brightness and
The image for increasing bar code B crosses the brightness of dark-part to obtain the image of the suitable bar code B of brightness；It, then will be even when that can not decode
The time for exposure of several rows of pixel arrays is set as the 1/5 of odd-line pixels array exposure time, carries out barcode scanning again, acquires bar code figure
Picture simultaneously decodes, and so on, until successfully decoded, by the time for exposure of odd-line pixels array when successfully decoded and even number line picture
The time for exposure of pixel array stores to the storage unit 5, then carries out S500.
To store more exposure parameters for subsequent calls, study can be employed many times to same bar code B or same type bar code B
Mode carries out barcode scanning, and the exposure parameter of multiple successfully decoded is stored one by one.
S500: closing mode of learning, presses scan button 13 and opens the barcode scanning mode of the scanning means 100 and is swept
Code.The bar code B type scanned in the bar code B and mode of learning scanned in barcode scanning mode is identical, and needs to scan under barcode scanning mode
Bar code B quantity it is larger and type is identical, such scene is also generally existing.Such as in rag trade, user is in inspection clothing clearly
It is the bar code B for needing to scan on a large amount of garment labels, and the material of label is substantially identical, the code of the bar code B printed
System, size and density are also identical substantially.Or in aquaculture, in order to be tracked to each livestock, often in every animal
Ear on stamp bar code B label, code system, size and the density of such bar code B is also identical substantially.
S600: when scanning the bar code B of same type, the main control unit 4, which will be called successively, is stored in the storage list
The exposure parameter in member 5 carries out identical exposure to the scanning engine 3 and is arranged, that is, described image sensor 32 is arranged
Time for exposure when being successfully decoded under time for exposure and mode of learning is identical, and the exposure for needing not move through auto exposure mode in this way is received
Process is held back without high dynamic range mode is enabled, saves the time.
S700: the image of the collected bar code B in S600 is successively decoded, and the bar code B information of successfully decoded is shown
In the display screen 6.
The environment as locating for the type of bar code B and bar code B scanned in mode of learning and barcode scanning mode is all the same and right
More successful exposure parameters of barcode scanning of same bar code B or similar bar code B are stored for calling, and are substantially increased under barcode scanning mode
Barcode scanning success rate, and save the barcode scanning time, improve barcode scanning efficiency.
In the present embodiment, under mode of learning, high dynamic range mode is carried out on the basis of auto exposure mode；
In other embodiments, Image Acquisition can be carried out only with auto exposure mode or high dynamic range mode under mode of learning, or
Other suitable exposure modes can also be used.
When switching the application scenarios of scanning means 100 of the present invention, indoor environment such as is switched in the case where sunlight irradiates environment
When, or when being switched to the bar code of a large amount of barcode scanning metal surfaces by the bar code of barcode scanning paper facer, former application scenarios can be emptied
The lower exposure parameter stored using mode of learning, and use mode of learning to acquire bar code image again in new application scenarios, and
Store the exposure parameter of successfully decoded.The operation for emptying exposure parameter may be configured as long-pressing and learn button 12 to the scanning means
100 issue the standby signal for successfully emptying exposure parameter；Or enters the operation interface of the display screen 6 and empty etc..
Scanning means and its barcode scanning method of the invention has the advantages that
Under mode of learning, the storage unit 5 stores the exposure parameter of successfully decoded；Under barcode scanning mode, the master
The exposure parameter that unit 4 calls storage is controlled, and thus the corresponding control scanning engine 3 acquires bar code image, without being exposed
Light convergence, improves barcode scanning efficiency.
Detailed description above is only the explanation of the preferred embodiments of the invention, the scope of the patents that is non-therefore limiting to the present invention,
So it is all with the invention specification and diagramatic content institute for it equivalence techniques change, be both contained in the invention it
In the scope of the patents.
Claims (16)
1. a kind of barcode scanning method, which comprises the following steps:
A: the mode of learning of scanning means is opened；
B: acquisition bar code image；
C: it successively decodes collected bar code image and judges whether to be successfully decoded；
It is such as successfully decoded, then stores the exposure parameter of scanning means when successfully decoded and carries out step D；Such as failed solution
Code, then resurvey bar code image；
D: it closes mode of learning and opens barcode scanning mode；
E: it calls the exposure parameter of storage to carry out identical exposure and is arranged and acquires bar code image；
F: collected bar code image is decoded.
2. barcode scanning method as described in claim 1, it is characterised in that: acquiring bar code image in step B includes being exposed using automatic
Light mode acquires bar code image.
3. barcode scanning method as claimed in claim 2, it is characterised in that: when acquiring bar code image, be respectively adopted at least two
Light compensating lamp replaces light filling or using at least two light compensating lamps while light filling.
4. barcode scanning method as claimed in claim 2, it is characterised in that: resurveying bar code image in step C includes using high
Dynamic range mode acquires bar code image, to adjust the excessive lightness or darkness part of bar code image to suitable brightness.
5. barcode scanning method as described in claim 1, it is characterised in that: the bar code that is acquired under mode of learning and in barcode scanning mode
The barcode types of lower scanning are identical.
6. barcode scanning method as claimed in claim 5, it is characterised in that: the identical bar code of type includes that code system is identical and institute
Locate the identical bar code of background.
7. barcode scanning method as described in claim 1, it is characterised in that: further include under mode of learning, to same bar code or phase
The decoding of same type bar code many successes, and store the exposure parameter of scanning means when multiple successfully decoded.
8. barcode scanning method as claimed in claim 7, it is characterised in that: under barcode scanning mode, successively call multiple successfully decoded
The exposure parameter of Shi Suoshu scanning means is exposed the bar code image for being arranged and successively decoding acquisition.
9. a kind of scanning means characterized by comprising
One scanning engine, to acquire bar code image；
One main control unit, to analyze the bar code image and be decoded；
One storage unit, to provide memory space；Wherein:
The scanning means is configured to mode of learning and barcode scanning mode, and under mode of learning, the main control unit controls institute
Scanning engine acquisition bar code image is stated, the main control unit is further analyzed and decoded to the bar code image, and will solution
Successfully exposure parameter of the bar code image in acquisition is stored in the storage unit to code；Under barcode scanning mode, the master control list
The metacall exposure parameter stored in the storage unit carries out identical exposure to the scanning engine and is arranged, with control
The scanning engine acquires bar code image, and the main control unit is further analyzed and decodes the bar code image.
10. scanning means as claimed in claim 9, it is characterised in that: the scanning engine has at least two light compensating lamps, point
Not She Yu the scanning engine two sides, either alternatively or simultaneously to be illuminated from different perspectives, to provide multiple angles or more
The illumination light of kind intensity is used for light filling.
11. scanning means as claimed in claim 9, it is characterised in that: under mode of learning, the scanning means is using automatic
Exposure mode barcode scanning.
12. scanning means as claimed in claim 9, it is characterised in that: under mode of learning, the scanning means has automatic
The mode of Exposure mode and two kinds of high dynamic range mode acquisition bar code images, and the priority of automatic exposure mode is higher than high move
State range mode, when the bar code image decoding that automatic exposure mode acquires is unsuccessful, the scanning means continues using high dynamic
State range mode acquires bar code image, to adjust the excessive lightness or darkness part of bar code image to suitable brightness.
13. scanning means as claimed in claim 9, it is characterised in that: the bar code that is acquired under mode of learning and in barcode scanning mould
The barcode types scanned under formula are identical.
14. scanning means as claimed in claim 13, it is characterised in that: the identical bar code of type include code system it is identical and
The identical bar code of locating background.
15. scanning means as claimed in claim 9, it is characterised in that: further include under mode of learning, to same bar code or together
The decoding of type bar code many successes, and the exposure parameter of by multiple successfully decoded when scanning engine is stored in the storage
Unit.
16. scanning means as claimed in claim 15, it is characterised in that: under barcode scanning mode, successively call and be repeatedly decoded into
The exposure parameter of the scanning engine is exposed the bar code image for being arranged and successively decoding acquisition when function.
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| CN110012235A (en) * | 2019-05-24 | 2019-07-12 | 上海商米科技有限公司 | Imagewise exposure control method and device, computer readable storage medium, system |
| CN110677595A (en) * | 2019-10-16 | 2020-01-10 | 广东旭龙物联科技股份有限公司 | Exposure control method and device |
| CN111259879A (en) * | 2020-01-09 | 2020-06-09 | 福州符号信息科技有限公司 | Method and system for improving first reading rate of bar code reading equipment |
| CN112749575A (en) * | 2020-12-31 | 2021-05-04 | 支付宝(杭州)信息技术有限公司 | Code scanning equipment and working mode identification method, device and equipment of code scanning equipment |
| CN113297866A (en) * | 2021-05-21 | 2021-08-24 | 苏州视印智能系统有限公司 | Industrial code reader based on deep learning and heat map technology |
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| CN113515966A (en) * | 2021-08-10 | 2021-10-19 | 海伯森技术（深圳）有限公司 | Multi-spectrum light illumination code scanning method and device, storage medium and equipment |
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| CN115426442A (en) * | 2022-08-11 | 2022-12-02 | 无锡盈达聚力科技有限公司 | Optical information collector and method |
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| CN113761963A (en) * | 2021-09-13 | 2021-12-07 | 福州符号信息科技有限公司 | Method for using parameter table and bar code reading equipment |
| CN113761963B (en) * | 2021-09-13 | 2023-06-09 | 福州符号信息科技有限公司 | Method for using parameter table and bar code reading equipment |
| CN115426442A (en) * | 2022-08-11 | 2022-12-02 | 无锡盈达聚力科技有限公司 | Optical information collector and method |
| CN115426442B (en) * | 2022-08-11 | 2023-06-27 | 无锡盈达聚力科技有限公司 | Optical information collector and method |
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