CN203242005U - Barcode scanner with dynamic and multi-angle lighting system - Google Patents
Barcode scanner with dynamic and multi-angle lighting system Download PDFInfo
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- CN203242005U CN203242005U CN 201320193436 CN201320193436U CN203242005U CN 203242005 U CN203242005 U CN 203242005U CN 201320193436 CN201320193436 CN 201320193436 CN 201320193436 U CN201320193436 U CN 201320193436U CN 203242005 U CN203242005 U CN 203242005U
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Abstract
The utility model provides a barcode scanner with a dynamic and multi-angle lighting system. The barcode scanner comprises a shell, a glass window, a lighting module group, an imaging module group, a light-sensitive device and a mainboard which is provided with a central processor. The lighting module group comprises multiple LEDs with different irradiating angles and the LEDs are positioned in front of the imaging module group. An LED array is composed of multiple LEDs with the same identical irradiating angle. The multiple LEDs with different irradiating angles comprise far-field lighting LEDs and near-field lighting LEDs. Compared with the prior art, the barcode scanner is adaptive to lighting requirements of the barcode scanner in multiple fields so that the barcode recognition rate is enhanced and the application range of barcode scanning devices is enlarged.
Description
Technical field
The utility model relates to the bar code scan equipment technical field, especially relates to a kind of barcode scanner with dynamic multi-angle illumination system.
Background technology
Barcode scanner is called again bar-code reader, bar code scan rifle, bar code scanner, barcode scanner and bar code reader.It is for the arrangement for reading of bar code reading institute inclusion information, utilizes optical principle, being transferred to computer or other equipment by data line or wireless mode behind the content decoding of bar code.Barcode scanner is widely used in the demand in a plurality of fields such as business POS POS, express delivery, storage, logistics, books, medicine.
In a lot of industrial applications, bar code is not only on the label that is printed on papery, and in some automobiles and electron trade, increasing enterprise directly makes bar code by the mode of laser engraving, spraying, etching even directly casting on parts.Bar code on unlike material or the different surfaces has the characteristics such as low contrast or high reflection, and reading code equipment has been caused new challenge.
The barcode scanner of prior art, generally comprise camera module, illumination module, photo-sensitive cell and mainboard, illumination module is comprised of the LED of several equal illumination angles and illumination distances usually, and these LED only possess a kind of light illumination mode, namely light simultaneously the light illumination mode of illumination.When bar code was scanned, the LED of illumination module lighted illumination simultaneously.Because the illuminating module structure of the barcode scanner of prior art is simple, the light illumination mode of illumination module is single, and light angle and illumination distances are fixed value, are difficult to tackle the lighting demand of plurality of application scenes.Therefore, the barcode scanner of prior art can't carry out the conversion of light illumination mode, and the illuminator that can only adopt single-mode is carried out bar code scan, particularly can only identify for the typographic bar code of paper labels, and in most of the cases can't be identified smoothly for the bar code of direct engraving, spraying, etching or casting on other material surfaces, discrimination is very low.
Summary of the invention
In order to overcome the defective of prior art, the purpose of this utility model provides a kind of barcode scanner with multi-angle illumination system, by multiple light illumination mode, the bar code that makes barcode scanner can be applicable to the various material surface is well on and sweeps the lighting demand of code, improve the bar-code identification rate, enlarge the range of application of bar code scan equipment.
In order to achieve the above object, the utility model provides a kind of barcode scanner with dynamic multi-angle illumination system, it comprises shell, windowpane, illumination module and camera module, sensor devices and has the mainboard of central processing unit, it is characterized in that: described illumination module comprises the LED of a plurality of different irradiating angles that are arranged on described camera module the place ahead, a plurality of LED of same irradiating angle form a led array, and the LED of wherein said a plurality of different irradiating angles comprises far field illumination LED and near field illumination LED.
Wherein, the far field illumination LED is used for the far field target light filling beyond the 10cm, and the near field illumination LED is used near field 10cm with interior near field target illumination.
The course of work of the present utility model is as follows:
The emissive lighting light source: after the start-up system, the combination that illumination module is enabled arbitrarily one or more light illumination modes in the multiple light illumination mode is thrown light on;
Catch image step: camera module and photo-sensitive cell obtain bar code image;
Decoding: central processing unit decodes to obtain bar code information with the bar code image that obtains, when central processing unit can't be decoded to bar code image, send a signal to illumination module, the combination that makes illumination module change another kind of light illumination mode or another multiple light illumination mode is thrown light on, and again catches image.
Preferably, also comprise after catching image step: the image parameters calculation procedure: the picture that the central processing unit utilization captures calculates picture MTF(Modulation Transfer Function, modulation transfer function) value, judge whether illumination and exposure be suitable, and calculate the required intensity of illumination of successful decoded picture and light angle, then transmit control signal and determine to enable wherein to illumination module that one or more light illumination modes throw light on.
Preferably, described multiple light illumination mode comprises the local lighting pattern that global illumination pattern that a plurality of LED all light and a plurality of led section are lighted.
Preferably, described multiple light illumination mode comprises that far field LED lights the far field light illumination mode of illumination, near field LED lights the near field light illumination mode of illumination and the distance of far field light illumination mode and near field light illumination mode checker replaces light illumination mode.
Preferably, described multiple light illumination mode comprises that two adjacent LED only have one to light illumination at one time, the alternately light illumination mode that another LED does not work.
Preferably, described multiple light illumination mode comprises that the led array of same angle lights illumination, the fixed angle light illumination mode that other angle led array do not work at one time simultaneously.
Preferably, described multiple light illumination mode comprises that the led array of same angle lights illumination at one time simultaneously, then close rapidly, the led array that is converted to another same angle is lighted, the multi-angle cyclic transformation light illumination mode of the cyclic transformation of closing rapidly again.So circulate repeatedly and interrupt the circulation trial until system realizes decoding.
Preferably, when illumination module is thrown light on, have at least 2 LED to light.
Compared to prior art, the utility model arranges the LED of a plurality of different irradiating angles by the camera module the place ahead at barcode scanner and is respectively applied to the far field illumination and the LED of near field illumination, formed dynamic multi-angle illumination system, thereby made illumination module can possess the illumination functions of multiple light illumination mode.By the conversion of the central controller controls light illumination mode on the mainboard, the barcode scanner that the utlity model has dynamic multi-angle illumination system can adapt to the lighting demand of several scenes, realizes the decoding that is well on of the bar code on the multiple unlike material.Compared to prior art, the barcode scanner that the utility model provides and bar code scanning method have improved the bar-code identification rate under the several scenes, have enlarged the range of application of bar code scan equipment.
Description of drawings
Fig. 1 is the structural representation that the utlity model has the barcode scanner of dynamic multi-angle illumination system.
Fig. 2 is the workflow block diagram of the first working method of the utility model barcode scanner.
Fig. 3 is the workflow block diagram of the second working method of the utility model barcode scanner.
Embodiment
Below in conjunction with accompanying drawing the utility model preferred embodiment is elaborated.
See also Fig. 1, it illustrates the barcode scanner that the utlity model has dynamic multi-angle illumination system, and it comprises shell 1, trigger 2, button 3, windowpane 4, illumination module 5, camera module 6, pilot lamp 7, hummer 8, mainboard 9, data and power interface 10, sensor devices 11.Described illumination module 5 comprises the LED of a plurality of different irradiating angles that are arranged on described camera module 6 the place aheads, a plurality of LED of same irradiating angle form a led array, and the LED of wherein said a plurality of different irradiating angles comprises far field illumination LED and near field illumination LED.Wherein, the far field illumination LED is the far field target light filling beyond the 10cm, and the near field illumination LED is that 10cm is with interior near field target illumination.
See also Fig. 2, adopt the first working method of above-mentioned barcode scanner scanning barcode, may further comprise the steps:
Start: under holding state, press the trigger start-up system;
The emissive lighting light source: after the start-up system, the combination that illumination module is enabled arbitrarily one or more light illumination modes in the multiple light illumination mode is thrown light on;
Catch image step: camera module and photo-sensitive cell obtain bar code image;
Decoding: central processing unit decodes to obtain bar code information with the bar code image that obtains, when central processing unit can't be decoded to bar code image, send a signal to illumination module, the combination that makes illumination module change another kind of light illumination mode or another multiple light illumination mode is thrown light on, and again catches image.
See also Fig. 3, adopt the second working method of above-mentioned barcode scanner scanning barcode, may further comprise the steps:
Start: under holding state, press the trigger start-up system;
The emissive lighting light source: after the start-up system, the combination that illumination module is enabled arbitrarily one or more light illumination modes in the multiple light illumination mode is thrown light on;
Catch image step: camera module and photo-sensitive cell obtain bar code image;
The image parameters calculation procedure: the picture that the central processing unit utilization captures calculates the picture mtf value, judge whether illumination and exposure be suitable, and calculate the required intensity of illumination of successful decoded picture and light angle, then transmit control signal and determine that to illumination module wherein the combination of one or more light illumination modes is thrown light on;
Decoding: central processing unit decodes to obtain bar code information with the bar code image that obtains, when central processing unit can't be decoded to bar code image, send a signal to illumination module, the combination that makes illumination module change another kind of light illumination mode or another multiple light illumination mode is thrown light on, and again catches image.
In the above-mentioned bar code scanning method, described multiple light illumination mode comprises following several:
1. global illumination pattern: a plurality of LED all light.
2. local lighting pattern: a plurality of led sections are lighted.
3. far field light illumination mode: far field LED lights illumination.
4. near field light illumination mode: near field LED lights illumination.
6. distance replaces light illumination mode: far field light illumination mode and near field light illumination mode checker.
7. replace light illumination mode: two adjacent LED only have one to light illumination at one time, and another LED does not work.
8. fixed angle light illumination mode: the led array of same angle is lighted illumination at one time simultaneously, and other angle led array do not work.
9. multi-angle cyclic transformation light illumination mode: the led array of same angle is lighted illumination at one time simultaneously, then closes rapidly, and the led array that is converted to another same angle is lighted, and closes rapidly again, and so circulation repeatedly.
When a certain or several light illumination modes are enabled in the above light illumination mode, have at least 2 LED to light.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage who is familiar with technique can understand content of the present utility model and according to this enforcement; can not limit protection domain of the present utility model with this; all equivalences of doing according to the utility model Spirit Essence change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (1)
1. barcode scanner with dynamic multi-angle illumination system, it comprises shell, windowpane, illumination module and camera module, sensor devices and has the mainboard of central processing unit, it is characterized in that: described illumination module comprises the LED of a plurality of different irradiating angles that are arranged on described camera module the place ahead, a plurality of LED of same irradiating angle form a led array, and the LED of wherein said a plurality of different irradiating angles comprises far field illumination LED and near field illumination LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320193436 CN203242005U (en) | 2013-04-17 | 2013-04-17 | Barcode scanner with dynamic and multi-angle lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320193436 CN203242005U (en) | 2013-04-17 | 2013-04-17 | Barcode scanner with dynamic and multi-angle lighting system |
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| Publication Number | Publication Date |
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| CN203242005U true CN203242005U (en) | 2013-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320193436 Expired - Fee Related CN203242005U (en) | 2013-04-17 | 2013-04-17 | Barcode scanner with dynamic and multi-angle lighting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103218596A (en) * | 2013-04-17 | 2013-07-24 | 苏州斯普锐智能系统有限公司 | Bar-code scanner with dynamic multi-angle illuminating system and bar-code scanning method thereof |
-
2013
- 2013-04-17 CN CN 201320193436 patent/CN203242005U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103218596A (en) * | 2013-04-17 | 2013-07-24 | 苏州斯普锐智能系统有限公司 | Bar-code scanner with dynamic multi-angle illuminating system and bar-code scanning method thereof |
| CN103218596B (en) * | 2013-04-17 | 2016-09-07 | 苏州斯普锐智能系统有限公司 | There is barcode scanner and the bar code scanning method thereof of dynamic multi-angle illuminator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 |