CN114239620B - Miniature bar code decoding module with detachable assembly - Google Patents
Miniature bar code decoding module with detachable assembly Download PDFInfo
- Publication number
- CN114239620B CN114239620B CN202111545183.1A CN202111545183A CN114239620B CN 114239620 B CN114239620 B CN 114239620B CN 202111545183 A CN202111545183 A CN 202111545183A CN 114239620 B CN114239620 B CN 114239620B
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- Prior art keywords
- lens
- circuit board
- shell
- window
- bar code
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- 238000005286 illumination Methods 0.000 claims description 31
- 238000003384 imaging method Methods 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000000306 component Substances 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
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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
-
- 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
- G06K7/10712—Fixed beam scanning
- G06K7/10722—Photodetector array or CCD scanning
- G06K7/10732—Light sources
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Stroboscope Apparatuses (AREA)
- Studio Devices (AREA)
Abstract
According to the miniature bar code decoding module with the detachable assembly, the sighting and lighting window is arranged on the front shell, the lighting lens is detachably embedded in the lighting window, the lighting light source is detachably arranged on the first circuit board, and different lighting light sources and lighting lenses are conveniently selected. The lens camera module is detachably connected with the first circuit board through the connector as an independent module, and can be adapted to image sensors of different models. The rear housing can effectively protect the first circuit board and the camera module. The second circuit board serving as a bar code decoding function is fixed on the front shell and the rear shell through screws, and meanwhile the front shell and the rear shell are fixed without additional fixing pieces.
Description
Technical Field
The invention relates to a bar code reading device, in particular to a miniature bar code decoding module with a detachable component.
Background
The bar code reading module is used as a core component for bar code reading, has complete functions of bar code image acquisition, image processing, bar code image decoding and decoding result output, and is a core component of various bar code type terminal products. With the continuous development of bar code application fields such as mobile payment, logistics transportation and the like, bar code application is continuously being promoted.
With the advent of different barcode application environments, demands on barcode refinement technology, such as illumination brightness and chromaticity change demands, are increasing, and image sensors with different pixels generally need to develop hardware requirements with different specifications for different application scenes. Because hardware development design requires a long development cycle, delays in delivery are easily taken.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is that the hardware of the barcode decoding module in the prior art is solidified once the hardware is designed and marketed, and the space for changing and upgrading is small.
In order to solve the technical problems, the invention adopts the following technical scheme:
a miniature barcode decoding module with a detachable assembly, comprising:
the front end of the front shell is provided with a sighting window, a sighting lens is arranged on the sighting window, and a sighting light source accommodating area is correspondingly arranged at the rear part of the sighting lens; an illumination window is arranged at the other side of the front end of the front shell, opposite to the aiming window, an illumination lens is detachably embedded in the illumination window, and an illumination light source is arranged at the rear part of the illumination lens; the front shell is provided with a lens imaging window between the aiming window and the illumination window, and the rear part of the lens imaging window is correspondingly provided with a lens shooting module storage area.
A lens camera module comprising: the lens comprises a lens shell, a lens group, an image sensor and a male connector; the front part of the lens shell is encapsulated with a lens group, the image sensor is arranged behind the lens group, and the rear part of the image sensor is provided with a male connector.
The front surface of the first circuit board is provided with an aiming light source and an illumination light source interface, and the illumination light source interface and the illumination light source realize transmission of electric signals through a flexible connection assembly; the front surface of the first circuit board is also provided with a female connector, and the lens camera module is detachably connected with the first circuit board for fixing and transmitting electric signals; the first circuit board is fixed at the rear of the front shell through a fixing piece.
And the bottom of the rear shell extends forwards to cover the lens shooting module, a screw hole is formed in the top of the rear shell, and the rear part of the rear shell is covered with the first circuit board.
The second circuit board is provided with a bar code decoding processing unit, and the second circuit board and the first circuit board transmit electric signals through a connecting piece and are fixed with the front shell and the rear shell through screws.
Preferably, the lens camera module and the shell are directly provided with damping and filling components, and the damping and filling components are two groups of foam cotton with inner and outer circles.
Preferably, the aiming light source is a red laser LED.
Preferably, the sighting telescope is a diffraction telescope, and the diffraction telescope diffracts laser light in a cross-shaped pattern.
Preferably, the illumination light source is a white LED.
Preferably, the image sensor is a CMOS image sensor with global exposure and rolling shutter exposure modes selectable.
The invention has the following beneficial effects:
1. according to the miniature bar code decoding module with the detachable assembly, the sighting and lighting window is arranged on the front shell, the lighting lens is detachably embedded in the lighting window, the lighting light source is detachably arranged on the first circuit board, and different lighting light sources and lighting lenses are conveniently selected. The lens camera module is detachably connected with the first circuit board through the connector as an independent module, and can be adapted to image sensors of different models. The rear housing can effectively protect the first circuit board and the camera module. The second circuit board serving as a bar code decoding function is fixed on the front shell and the rear shell through screws, and meanwhile the front shell and the rear shell are fixed without additional fixing pieces.
2. The miniature bar code decoding module with the detachable assembly is characterized in that a damping and filling assembly is further arranged between the lens camera module and the front shell, and the damping and filling assembly is two groups of foam cotton with inner circles and outer circles. Through setting up the bubble cotton of laminating camera lens shape and camera lens module storage area shape can effectually fix the camera lens, thereby prevent because equipment motion causes the camera lens shake to lead to formation of image fuzzy, influences decoding rate.
3. The image sensor is a CMOS image sensor with selectable global exposure and rolling shutter exposure modes, so that the image acquisition requirements of different scenes are met, the global exposure can be selected in the bar code acquisition requirements of moving scenes, the motion distortion of bar code images is reduced, the rolling shutter exposure can be selected in the bar code acquisition requirements of static scenes, and the details of the bar code images are improved.
Drawings
Fig. 1 is a schematic structural diagram of a micro barcode decoding module with a detachable assembly according to the present invention.
Fig. 2 is an exploded view of a micro barcode decoding module with a detachable assembly according to the present invention.
FIG. 3 is a schematic view of a lens camera module with a detachable micro barcode decoding module according to the present invention.
The reference numerals are: 1-a front housing; 12 aiming the lens; 121-aiming the light source accommodation area; 131-illuminating the lens; 2-a first circuit board; 21-aiming a light source; 22-an illumination source; 3-a lens camera module; 31-a lens housing; 32-a lens group; 34-a male connector; 4-a rear housing; 311-soaking cotton; 5-a second circuit board.
Detailed Description
The invention will now be described in detail with reference to the drawings and to specific embodiments.
As shown in fig. 1-3, a miniature barcode decoding module with detachable components, comprising:
the front housing 1, the front end of housing 1 is provided with the sighting window, sighting telescope 12 is installed to the sighting telescope window, sighting telescope 12 rear portion corresponds and is provided with sighting light source accommodation area 121. The other side of the front end of the front housing 1, which is opposite to the aiming window 11, is provided with an illumination window, which is provided with an illumination lens 131. The rear part of the illumination lens 131 is provided with an illumination light source 22. The front shell 1 is provided with a lens imaging window between the aiming window and the illumination window, the rear part of the lens imaging window is correspondingly provided with a lens shooting module accommodating area 141, and the upper part and the lower part of the lens shooting module accommodating area 141 are hollow. The front shell 1 is made of black ABS or PC.
The lens imaging module 3 includes: lens housing 31, lens group 32, image sensor (not shown because it is enclosed within the lens housing), male connector 34. The lens housing 31 has a lens group 32 encapsulated in the front thereof, an image sensor disposed behind the lens group, and a male connector 34 disposed behind the image sensor.
The image sensor is split-mounted in the lens housing 31 by dispensing, and a male connector 34 is welded at the rear of the image sensor. The upper part of the lens housing 31 is cylindrical, the lower part is square, the whole is 'convex', the barcode reading module is different from the mobile phone camera module, certain requirements are placed on the depth of field of an image, and particularly, long-distance barcode reading is needed to ensure that the lens has a certain distance from the image sensor. The cylindrical imaging area can better project external light onto the photosensitive array of the image sensor, the lower part of the imaging area is square and attached to the square image sensor, the volume is reduced, and the square structure is convenient to install.
The first circuit board 2 is provided on the front face with an aiming light source 21 and an illumination light source interface. The illumination source 22 and the aiming source 21. The illumination source interface is in electrical signal transmission with the illumination source 22 through a flexible connection assembly. The front of the first circuit board 2 is also provided with a female connector, and the lens camera module 3 is detachably connected and fixed with the first circuit board 2 and transmits electric signals. The first circuit board 2 is fixed to the rear of the front case 1 by a fixing member. The fixing piece is a screw.
And the bottom of the rear shell 4 extends forwards to cover the lens shooting module, a screw hole is formed in the top of the rear shell, and the rear part of the rear shell covers the first circuit board 2. The material of the rear shell 4 is the same as that of the front shell 1.
And a second circuit board 5, provided with a bar code decoding processing unit, wherein the second circuit board 5 and the first circuit board 2 transmit electric signals through a connecting piece, and the connecting piece is preferably an FPC. And is fixed to the front case 1 and the rear case 4 by screws.
Preferably, the lens camera module 3 and the front housing 1 are directly provided with a shock absorbing and filling assembly, and the shock absorbing and filling assembly is two groups of foam 311 with inner and outer circles.
Through setting up the bubble cotton 311 of laminating camera lens shape and camera lens module holding area shape, can effectually fix the camera lens, thereby prevent because equipment motion causes the camera lens shake to lead to formation of image fuzzy, influences decoding rate.
Preferably, the aiming light source 21 is a red laser LED. The front part of the red laser LED is also provided with a condensing lens.
Preferably, the sighting telescope 12 is a diffractive telescope, and the pattern projected by the diffractive telescope is in a cross shape.
Preferably, the height of the front housing 1 is about the height of the lens camera module 3. The "about" here is caused by product molds and assembly tolerances, and cannot make the height of the housing completely identical to the height of the lens module, and the difference between the heights of the two is within plus or minus two millimeters.
Preferably, the image sensor is a CMOS image sensor with selectively switchable global exposure and rolling shutter exposure modes. The image sensor is a CMOS image sensor with selectable global exposure and rolling shutter exposure modes, so that the image acquisition requirements of different scenes are met, the global exposure can be selected in the bar code acquisition requirements of moving scenes, the motion distortion of bar code images is reduced, the rolling shutter exposure can be selected in the bar code acquisition requirements of static scenes, and the details of the bar code images are improved. An image sensor of a single exposure mode may also be selected. Such as single global exposure, single rolling shutter exposed CMOS.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (6)
1. A miniature bar code decoding module having a removable assembly, comprising:
the front end of the front shell is provided with a sighting window, a sighting lens is arranged on the sighting window, and a sighting light source accommodating area is correspondingly arranged at the rear part of the sighting lens; an illumination window is arranged at the other side of the front end of the front shell, opposite to the aiming window, an illumination lens is detachably embedded in the illumination window, and an illumination light source is arranged at the rear part of the illumination lens; a lens imaging window is arranged between the aiming window and the illumination window, a lens shooting module accommodating area is correspondingly arranged at the rear part of the lens imaging window, and the upper part and the lower part of the lens shooting module accommodating area are hollow;
a lens camera module comprising: the lens comprises a lens shell, a lens group, an image sensor and a male connector; the front part of the lens shell is encapsulated with a lens group, the image sensor is arranged behind the lens group, the rear part of the image sensor is provided with a male connector,
the front surface of the first circuit board is provided with an aiming light source and an illumination light source interface, and the illumination light source interface and the illumination light source realize transmission of electric signals through a flexible connection assembly; the front surface of the first circuit board is also provided with a female connector, and the lens camera module is detachably connected with the first circuit board for fixing and transmitting electric signals; the first circuit board is fixed at the rear of the front shell through a fixing piece;
the bottom of the rear shell extends forwards to cover the lens shooting module, a screw hole is formed in the top of the rear shell, and the rear part of the rear shell covers the first circuit board;
the second circuit board is provided with a bar code decoding processing unit, and the second circuit board and the first circuit board transmit electric signals through a connecting piece and are fixed with the front shell and the rear shell through screws.
2. The miniature bar code decoding module with detachable components according to claim 1, wherein the lens camera module and the shell are directly provided with damping and filling components, and the damping and filling components are two groups of foam cotton outside the inner circle.
3. The miniature bar code decoding module with removable components of claim 2, wherein the aiming light source is a red laser LED.
4. A miniature bar code decoding module according to claim 3, wherein the aiming lens is a diffractive lens that diffracts the laser light in a "cross" pattern.
5. The micro barcode decoding module with detachable components of claim 4, wherein the illumination light source is a white LED.
6. The micro barcode decoding module with detachable assembly of claim 5, wherein the image sensor is a CMOS image sensor with global exposure and rolling shutter exposure modes selectable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111545183.1A CN114239620B (en) | 2021-12-16 | 2021-12-16 | Miniature bar code decoding module with detachable assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111545183.1A CN114239620B (en) | 2021-12-16 | 2021-12-16 | Miniature bar code decoding module with detachable assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114239620A CN114239620A (en) | 2022-03-25 |
| CN114239620B true CN114239620B (en) | 2024-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111545183.1A Active CN114239620B (en) | 2021-12-16 | 2021-12-16 | Miniature bar code decoding module with detachable assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114239620B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109815767A (en) * | 2019-01-30 | 2019-05-28 | 福州符号信息科技有限公司 | A kind of bar code reading module with double circuit board |
| CN212322275U (en) * | 2020-06-04 | 2021-01-08 | 福州符号信息科技有限公司 | Bar code reading module with laser aiming unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012058592A2 (en) * | 2010-10-29 | 2012-05-03 | Immunogen, Inc. | Non-antagonistic egfr-binding molecules and immunoconjugates thereof |
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2021
- 2021-12-16 CN CN202111545183.1A patent/CN114239620B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109815767A (en) * | 2019-01-30 | 2019-05-28 | 福州符号信息科技有限公司 | A kind of bar code reading module with double circuit board |
| CN212322275U (en) * | 2020-06-04 | 2021-01-08 | 福州符号信息科技有限公司 | Bar code reading module with laser aiming unit |
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| Publication number | Publication date |
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| CN114239620A (en) | 2022-03-25 |
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