CN213069846U - Bar code reading equipment based on multi-azimuth light source compensation - Google Patents
Bar code reading equipment based on multi-azimuth light source compensation Download PDFInfo
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- CN213069846U CN213069846U CN202022333181.3U CN202022333181U CN213069846U CN 213069846 U CN213069846 U CN 213069846U CN 202022333181 U CN202022333181 U CN 202022333181U CN 213069846 U CN213069846 U CN 213069846U
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Abstract
The utility model relates to a bar code recognition equipment based on diversified light source compensation, including the casing and set up in main control circuit board, imaging component module, inner cover in the casing and locate the first circuit board in the casing, the welding has the decoding chip on the main control circuit board, the casing openly sets up a scanning window, the opening of inner cover is just right the scanning window, the bottom of inner cover is fixed imaging component module, imaging component module with decoding chip communication connection, first circuit board pass through the connector with decoding chip communication connection on the main control circuit board, first circuit board is located going up of inner cover is followed, it has first light filling lamp to go up to the positive one side welding of casing on the first circuit board, first light filling lamp is the side luminescent lamp, its light emitting area orientation the medial surface of casing. The utility model discloses can carry out diversified multi-angle light filling to the bar code, avoid forming the facula on the bar code, promote the definition of the bar code image who gathers.
Description
Technical Field
The utility model relates to a bar code reading equipment based on diversified light source compensation belongs to bar code reading equipment field.
Background
The bar code reading device is used for reading information contained in a bar code, and in the code scanning process, a bar code scanner is used for scanning to obtain an optical signal, the optical signal is subjected to photoelectric conversion by a mainboard to obtain an electronic signal corresponding to a bar code symbol, the electronic signal is decoded and then reduced into source information, and then the source information is transmitted to a computer or other processing equipment in a data line or wireless communication mode. At present, bar code recognition equipment has been widely applied to fields such as various commercial receipts silver, express delivery commodity circulation, storage transportation and intelligent manufacturing, becomes an important ring of thing networking ecosystem.
The current barcode reading device is generally configured with an auxiliary lighting device for light source compensation, but the failure of reading the code still occurs in the following application occasions: 1) the bar code on the screen of the mobile phone, the computer display or the surface of the smooth material is identified, and the light emitted by the auxiliary lighting device often forms reflection or flare on the screen of the mobile phone, the display and the surface of the smooth material, so that the code reading fails; 2) because the bar codes on different media or different surfaces have different contrasts or reflectivities, in the application occasions where the ambient light is too dark or too bright, the bar code reading device adopting a single light source cannot adapt to the bar codes with different contrasts or reflectivities, so that clear bar code images cannot be obtained quickly, decoding failure is caused, and the code scanning efficiency is seriously influenced; 3) in order to protect the lens of the barcode reading device, the transparent screen made of transparent material is usually used to cover the scanning window of the barcode reading device so as to achieve certain waterproof, dustproof and other effects, however, the transparent screen made of transparent material easily reflects the light emitted by the auxiliary lighting device directly onto the lens to form noise, which causes adverse effects on the barcode scanning.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a bar code recognition equipment based on diversified light source compensation can carry out the multi-angle light filling to the bar code and can not form the facula on the bar code surface when the light filling, has greatly improved bar code recognition equipment's the flexibility of reading code efficiency and applied scene.
The technical scheme of the utility model as follows:
the utility model provides a bar code recognition equipment based on diversified light source compensation, include the casing and set up in main control circuit board, imaging component module, inner cover in the casing and locate the first circuit board in the casing, the welding has the chip of decoding on the main control circuit board, the casing openly sets up a scanning window, the opening of inner cover is just right the scanning window, the bottom of inner cover is fixed imaging component module, imaging component module with decode chip communication connection, first circuit board pass through the connector with decode chip communication connection on the main control circuit board, first circuit board is located the last edge of inner cover, it has first light filling lamp to go up to the positive one side welding of casing on the first circuit board, first light filling lamp is the side-emitting lamp, its light emitting area orientation the medial surface of casing.
Preferably, a light reflecting part is fixed on the inner side surface of the shell, and light emitted by the first light supplement lamp is reflected by the light reflecting part and then emitted outwards.
Preferably, the bar code reading device further comprises a first light diffusion plate and a second light diffusion plate, the first light diffusion plate is arranged on the plane where the scanning window is located and located in front of the first circuit board, the second light diffusion plate is perpendicular to the first light diffusion plate, the second light diffusion plate is arranged between the first light diffusion plate and the first circuit board, and light emitted by the first light supplement lamp is emitted outwards after passing through the first light diffusion plate and/or the second light diffusion plate.
Preferably, the bar code reading device further comprises two brackets which are arranged in the shell and fixedly connected with the shell, and two ends of the first light diffusion plate and the second light diffusion plate are fixed through the two brackets.
Preferably, a second light supplement lamp is welded on one surface, facing the inner cover, of the first circuit board, and the second light supplement lamp is a side light emitting lamp.
Preferably, the bar code reading device further comprises a second circuit board arranged in the shell, the second circuit board is in communication connection with a decoding chip on the main control circuit board through a connector, the second circuit board is located on the upper edge of the inner cover and is arranged opposite to the first circuit board, a third light supplementing lamp is welded on one surface of the second circuit board facing the inner cover, and the third light supplementing lamp is a side light-emitting lamp.
Preferably, the barcode reading device further comprises an infrared trigger module welded to one surface of the second circuit board facing the front surface of the housing, or welded to one surface of the first circuit board facing the front surface of the housing; when the infrared trigger module detects that a target object exists in front of the scanning window, a signal is sent to the decoding chip, and the decoding chip starts the imaging component module to scan the bar code.
Preferably, the bar code reading device further comprises a radio frequency reading circuit board arranged on the shell, the radio frequency reading circuit board is in communication connection with the decoding chip on the main control circuit board through a connector, and the radio frequency reading circuit board is perpendicular to the main control circuit board.
Preferably, the barcode reading device further comprises a transparent screen, and the transparent screen is fixed on the front surface of the shell.
More preferably, the inner surface of the inner cover is a rough surface.
The utility model discloses following beneficial effect has:
1. the utility model provides a bar code recognition equipment based on diversified light source compensation, the luminous first light filling lamp of side forms the area source with the mode of reflection, carries out the light filling to the bar code, not only promotes bar code recognition equipment's recognition distance, improves bar code recognition equipment's the environmental brightness of sweeping the code on the whole, still can avoid forming the facula on the bar code, improves the definition of the bar code image that scans to improve and decode the success rate and sweep a yard efficiency.
2. The utility model provides a bar code recognition equipment based on diversified light source compensation, through the light filling effect of the first light filling lamp of reflection of light part reinforcing, simultaneously, still through first light diffuser plate and second light diffuser plate, makes the even outgoing of light, further avoids forming the facula on the bar code.
3. The utility model provides a bar code recognition equipment based on diversified light source compensation, carry out the light filling through second light filling lamp and third light filling lamp to the inner space of inner cover, it not only can prevent effectively that light that second light filling lamp and third light filling lamp sent from directly shining on the camera lens of imaging assembly module and directly shining and form noise interference and facula on the bar code, can also combine first light filling lamp, generate multiple light filling mode, promote bar code recognition equipment to the adaptability of application environment and to the code success rate of sweeping of different material surface bar codes.
4. The utility model provides a bar code recognition equipment based on diversified light source compensation, still includes infrared trigger module, sweeps the sign indicating number through infrared trigger module triggering, simplifies and sweeps a sign indicating number operating procedure, reduces the equipment consumption.
5. The utility model provides a bar code recognition equipment based on diversified light source compensation, still includes radio frequency recognition circuit board, radio frequency recognition circuit board can read electronic tags, strengthens bar code recognition equipment's function, makes bar code recognition equipment's range of application wider.
Drawings
FIG. 1 is a schematic structural diagram of a barcode reading device based on multi-azimuth light source compensation;
FIG. 2 is an exploded view of a bar code reader based on multi-orientation light source compensation;
FIGS. 3 and 4 are light path diagrams of a light compensating lamp of a barcode reading device based on multi-azimuth light source compensation;
FIG. 5 is an enlarged view taken at D in FIG. 3;
fig. 6 is a light supplement lamp control flow chart of the barcode reading device based on multi-azimuth light source compensation.
The reference numbers in the figures denote:
1. a housing; 2. a main control circuit board; 3. an imaging assembly module; 4. an inner cover; 11. a scanning window; 5. a first circuit board; 51. a first fill-in light; 52. a second fill-in light; 6. a light reflecting member; 7. a first light diffusion plate; 8. a second light diffusion plate; 9. a support; 10. a second circuit board; 101. a third fill-in light; 20. an infrared trigger module; 30. a radio frequency identification circuit board; 301. a radio frequency antenna; 40. screen transmission; 50. a base; 60. a battery; 70. and a data transmission interface.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, 2 and 5, a barcode reading device based on multi-directional light source compensation includes a housing 1, a main control circuit board 2, an imaging component module 3, an inner cover 4 and a first circuit board 5, wherein the main control circuit board 2, the imaging component module 3, the inner cover 4 and the first circuit board 5 are disposed in the housing 1, and a decoding chip is welded on the main control circuit board 2. The imaging component module 3 includes a lens and an image sensor. A scanning window 11 is openly seted up to casing 1, the opening of inner cover 4 is just right scanning window 11, the bottom of inner cover 4 is fixed imaging component module 3, imaging component module 3 with decode chip communication connection, first circuit board 5 pass through the connector with decode chip communication connection on the main control circuit board 2, first circuit board 5 is located the last edge of inner cover 4, first circuit board 5 is gone up towards the positive one side welding of casing 1 and is had first light filling lamp 51, and the one side welding of orientation inner cover 4 has second light filling lamp 52, first light filling lamp 51 is the side-emitting lamp, and its light emitting area orientation the medial surface of casing 1. The side light-emitting lamp can prevent the light source from directly irradiating on the surface of the bar code and prevent light spots from being formed on the surface of the bar code. Preferably, a light reflecting member 6 is fixed on an inner side surface of the housing 1, and light emitted by the first fill-in light 51 is reflected by the light reflecting member 6 and then emitted outward. The reflective member 6 may be made of reflective paper. The light reflecting member 6 can enhance the light intensity of the reflected light. As shown in fig. 3 and 4, a line a is a schematic light path of the first fill-in lamp 51, and a line B is a schematic light path of the second fill-in lamp 52. First light filling lamp 51 sends out the light, through reflecting back towards the place ahead outgoing of scanning window 11 place plane or scanning window 11, consequently, bar code recognition equipment can carry out the light filling to remote bar code, improves remote bar code scanning's image definition, simultaneously, is a surface light source behind the light outgoing after the reflection, and the pointolite that the non-direct light source formed, consequently, the utility model discloses the light that can prevent effectively that first light filling lamp 51 from sending directly shines on the camera lens of formation of image subassembly module 3 and directly forms noise interference and facula on the bar code. The light emitted from the second fill-in light 52 is diffused and reflected by the inner surface of the inner cover 4 and then emitted from the scanning window 11. The second light supplement lamp 52 can reduce light reflection and improve the brightness in the inner cover 4, and can supplement light to the bar code. The second light supplement lamp 52 is a side light emitting lamp, and the light emitted by the side light emitting lamp is not directly emitted to the lens, so that the image is not unclear. Preferably, the inner surface of the inner cover 4 is a rough surface, which can enhance the diffuse reflection effect.
The utility model discloses a bar code recognition equipment still includes first light diffuser plate 7 and second light diffuser plate 8, first light diffuser plate 7 is located scanning window 11 place plane just is located the place ahead of first circuit board 5, second light diffuser plate 8 with first light diffuser plate 7 mutually perpendicular just second light diffuser plate 8 set up in between first light diffuser plate 7 and the first circuit board 5, the light that first light filling lamp 51 sent is outwards emergent after first light diffuser plate 7 and/or second light diffuser plate 8. Both ends of the first light diffusion plate 7 and the second light diffusion plate 8 are fixed by two brackets 9. The bracket 9 is arranged in the shell 1 and fixed with the shell 1. The first and second light diffusion plates 7 and 8 can make the light distribution more uniform. The first light diffusion plate 7 can prevent the light emitted by the first fill light 51 from being directly emitted onto the barcode, and the second light diffusion plate 8 can prevent the light emitted by the first fill light 51 from being directly emitted onto the imaging module 3.
The utility model discloses a bar code recognition equipment is still including locating second circuit board 10 in casing 1, second circuit board 10 pass through the connector with decoding chip communication connection on the master control circuit board 2, second circuit board 10 is located the last edge of inner cover 4 and with first circuit board 5 sets up relatively, it has third light filling lamp 101 to weld towards the one side of inner cover 4 on second circuit board 10, third light filling lamp 101 is the side light-emitting lamp. As shown in fig. 3, a line C indicates a light path of the third fill light 101. The third light supplement lamp 101 can further enhance the light supplement effect on the inner cover 4 and the bar code.
The utility model discloses a bar code recognition equipment still includes one and passes through screen 40, pass through screen 40 and be fixed in the front of casing 1. This screen 40 can play dustproof and certain waterproof effect.
The barcode reading device of the present invention further comprises an infrared trigger module 20 welded to the second circuit board 10 on a surface facing the front of the housing 1, or welded to the first circuit board 5 on a surface facing the front of the housing 1; when the infrared trigger module 20 detects that a target object exists in front of the scanning window 11, a signal is sent to the decoding chip, and the decoding chip starts the imaging component module 3 to scan a bar code. The infrared trigger module 20 triggers the code scanning, so that the code scanning is more convenient and the power consumption of the equipment is lower.
The utility model discloses a bar code recognition equipment still includes one and locates the radio frequency recognition circuit board 30 of casing 1, radio frequency recognition circuit board 30 pass through the connector with decoding chip communication connection on the main control circuit board 2, radio frequency recognition circuit board 30 with 2 mutually perpendicular of main control circuit board. The electronic tag is identified and read through the radio frequency identification circuit board 30, so that the bar code identification device has a radio frequency identification function and can identify and read the membership card and the article provided with the electronic tag.
As shown in fig. 1, the barcode identification device is also typically supported by a base 50 and placed on a table. In order to improve the field adaptability of the barcode reading device, as shown in fig. 2, a battery 60 may be used to supply power for the barcode reading device. The bar code reading device further comprises a data transmission interface 70, and the data transmission interface 70 is in communication connection with the decoding chip. The rf identification circuit board 30 further includes an rf antenna 301.
The utility model discloses a theory of operation:
Generally, the first light supplement lamp 51, the second light supplement lamp 52, and the third light supplement lamp 101 may all use a white lamp, but lamps of other colors and infrared lamps may also be selected to be combined with the white lamp according to the requirements of the practical application, for example, the third light supplement lamp 101 uses an infrared lamp, the second light supplement lamp 52 uses a white lamp, the first light supplement lamp 51 uses a white lamp, or the first light supplement lamp 51 uses a white lamp and an infrared lamp. As shown in table 1, the light supplement modes are combined in various ways, for example, a white light is used, the first light supplement lamp 51 has three selection modes of no-light, slightly-light and high-light, and the second light supplement lamp 52 and the third light supplement lamp 101 have two selection modes of light and no-light, and generally, the brightness of the high-light can be set to be greater than or equal to 1.5-2 times of the brightness of the slightly-light.
Table 1:
because the selection of the fill-in light mode is determined according to the current ambient brightness, a mapping relationship between the fill-in light mode and the brightness value of the image can be established according to the brightness value of the image acquired by the imaging component module 3. And when the current supplementary lighting mode fails to decode for multiple times, adjusting the supplementary lighting mode until the decoding is successful.
Referring to fig. 6, the following process can be specifically adopted:
s1: the imaging component module 3 collects an image containing a bar code;
s2: the bar code decoding chip calculates the brightness value of the current image, and selects and sets a corresponding light supplement mode according to the brightness value of the current image;
s3: acquiring the bar code by using the current light supplement mode to obtain an image containing the bar code, decoding the image data by using a bar code decoding chip, and entering S5 if the decoding is successful; if not, go to S4;
s4: calculating the brightness value L of the image acquired in step S3, and comparing the brightness value L1 of the image acquired last time; if the brightness value L2 is greater than the brightness value L1, the next level fill-in mode with the reduced brightness value is selected; if the luminance value L2 is less than the luminance value L1, the previous level fill-in light mode with increased luminance value is selected, and then S3; as shown in table 1, a denotes a first fill light 51, B denotes a second fill light 52, C denotes a third fill light 101, 1 denotes on, 0 denotes off, 2 denotes lightly on, and 3 denotes high on, if the current fill light mode is A2C1B1, the previous fill light mode with an increased luminance value is A3C1B1, and the next fill light mode with a decreased luminance value is A0C1B 1;
s5: the current light supplement mode is used as a common light supplement mode of the current bar code reading equipment, and the light supplement mode is selected again until the decoding fails for a plurality of times;
above-mentioned step does the utility model discloses but each light filling lamp is bright in the bar code recognition equipment, dark control's an implementation mode, and the field technical staff can be according to the scene demand and do the adaptability to bright dark control and change, for example, can set up and concentrate general mode and supply the customer to select: a general mode, a screen code mode, a commodity code mode, etc., wherein each mode corresponds to a plurality of light supplement modes for adjustment.
The utility model relates to a bar code recognition equipment based on diversified light source compensation, through the light filling that carries out diversified multi-angle to the bar code, the surface characteristic of reinforceing the bar code, the contrast of enhancement reduces reflection of light or flare, can support not have backlight screen bar code to read and read any bar code on paper, cell-phone, the computer display screen.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a bar code recognition equipment based on diversified light source compensation, include casing (1) and set up in main control circuit board (2), formation of image subassembly module (3) and inner cover (4) in casing (1), the welding has the chip of decoding on main control circuit board (2), casing (1) openly sets up a scanning window (11), the opening of inner cover (4) is just right scanning window (11), the bottom of inner cover (4) is fixed formation of image subassembly module (3), formation of image subassembly module (3) with decode chip communication connection, its characterized in that: still including locating first circuit board (5) in casing (1), first circuit board (5) pass through the connector with decoding chip communication connection on the main control circuit board (2), first circuit board (5) are located the last edge of inner cover (4), it has first light filling lamp (51) to go up to the positive one side welding of casing (1) on first circuit board (5), first light filling lamp (51) are the side glow lamp, and its light emitting area orientation the medial surface of casing (1).
2. The barcode reading device based on multi-azimuth light source compensation of claim 1, wherein: a light reflecting part (6) is fixed on the inner side surface of the shell (1), and light emitted by the first light supplementing lamp (51) is reflected by the light reflecting part (6) and then emitted outwards.
3. The barcode reading device based on multi-azimuth light source compensation of claim 1, wherein: still include first light diffuser plate (7) and second light diffuser plate (8), first light diffuser plate (7) are located scanning window (11) place plane just is located the place ahead of first circuit board (5), second light diffuser plate (8) with first light diffuser plate (7) mutually perpendicular just second light diffuser plate (8) set up in between first light diffuser plate (7) and first circuit board (5), the light that first light filling lamp (51) sent is outwards emergent behind first light diffuser plate (7) and/or second light diffuser plate (8).
4. The barcode reading device based on multi-azimuth light source compensation of claim 3, wherein: still including locating in casing (1) and with casing (1) fixed connection's two supports (9), the both ends of first light diffuser plate (7) and second light diffuser plate (8) are passed through two supports (9) are fixed.
5. The barcode reading device based on multi-azimuth light source compensation of claim 1, wherein: a second light supplement lamp (52) is welded on one surface, facing the inner cover (4), of the first circuit board (5), and the second light supplement lamp (52) is a side light-emitting lamp.
6. The barcode reading device based on multi-azimuth light source compensation of claim 1, wherein: still including locating second circuit board (10) in casing (1), second circuit board (10) pass through the connector with decoding chip communication connection on main control circuit board (2), second circuit board (10) are located last edge of inner cover (4) and with first circuit board (5) set up relatively, the welding of one side towards inner cover (4) has third light filling lamp (101) on second circuit board (10), third light filling lamp (101) are the side glow lamp.
7. The barcode reading device according to claim 6, wherein the barcode reading device comprises: the infrared trigger module (20) is welded on one surface of the second circuit board (10) facing to the front surface of the shell (1) or welded on one surface of the first circuit board (5) facing to the front surface of the shell (1); when the infrared trigger module (20) detects that a target object exists in front of the scanning window (11), a signal is sent to the decoding chip, and the decoding chip starts the imaging component module (3) to scan the bar code.
8. The barcode reading device based on multi-azimuth light source compensation of claim 1, wherein: the radio frequency identification circuit board is characterized by further comprising a radio frequency identification circuit board (30) arranged on the shell (1), the radio frequency identification circuit board (30) is in communication connection with a decoding chip on the main control circuit board (2) through a connector, and the radio frequency identification circuit board (30) is perpendicular to the main control circuit board (2).
9. The barcode reading device based on multi-azimuth light source compensation of claim 1, wherein: the novel LED lamp is characterized by further comprising a transparent screen (40), wherein the transparent screen (40) is fixed on the front surface of the shell (1).
10. The barcode reading device based on multi-azimuth light source compensation of claim 1, wherein: the inner surface of the inner cover (4) is a rough surface.
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| CN202022333181.3U CN213069846U (en) | 2020-10-19 | 2020-10-19 | Bar code reading equipment based on multi-azimuth light source compensation |
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| CN202022333181.3U CN213069846U (en) | 2020-10-19 | 2020-10-19 | Bar code reading equipment based on multi-azimuth light source compensation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113962238A (en) * | 2021-12-06 | 2022-01-21 | 苏州华星光电技术有限公司 | Light supplementing light source and identification code scanning device |
| CN114065792A (en) * | 2021-11-09 | 2022-02-18 | 东集技术股份有限公司 | Bar code reader and bar code scanning method |
| CN114239619A (en) * | 2021-12-16 | 2022-03-25 | 福建新大陆自动识别技术有限公司 | Bar code scanning device with multiple lighting modes |
-
2020
- 2020-10-19 CN CN202022333181.3U patent/CN213069846U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114065792A (en) * | 2021-11-09 | 2022-02-18 | 东集技术股份有限公司 | Bar code reader and bar code scanning method |
| CN113962238A (en) * | 2021-12-06 | 2022-01-21 | 苏州华星光电技术有限公司 | Light supplementing light source and identification code scanning device |
| CN113962238B (en) * | 2021-12-06 | 2023-11-28 | 苏州华星光电技术有限公司 | Light supplementing light source and identification code scanning device |
| CN114239619A (en) * | 2021-12-16 | 2022-03-25 | 福建新大陆自动识别技术有限公司 | Bar code scanning device with multiple lighting modes |
| CN114239619B (en) * | 2021-12-16 | 2023-07-04 | 福建新大陆自动识别技术有限公司 | Bar code scanning equipment with multiple illumination modes |
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