CN205983504U - Finger vein image acquisition device of self -adaptation adjustment light intensity - Google Patents

Finger vein image acquisition device of self -adaptation adjustment light intensity Download PDF

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CN205983504U
CN205983504U CN201620715536.6U CN201620715536U CN205983504U CN 205983504 U CN205983504 U CN 205983504U CN 201620715536 U CN201620715536 U CN 201620715536U CN 205983504 U CN205983504 U CN 205983504U
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finger
vein image
groove
led lamp
draw
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CN201620715536.6U
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张烜
丁晟
赵国栋
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Holy Point Century Technology Co., Ltd.
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Shanxi Sunpoint Century Polytron Technologies Inc
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Abstract

The utility model discloses a finger vein image acquisition device of self -adaptation adjustment light intensity, including shell, infrared LED lamp, touch sensor, infra -red filter, camera lens, image sensor, main processing module and reminder module, be provided with the finger draw -in groove on the shell, the utility model discloses a main processing module judges the quality of the image gathered, in that the image is unsatisfied when requiring, and self -adaptation adjustment infrared LED lamp's luminance to again, gather the finger vein image by image sensor, so go on to finally gather the finger vein image that meets the demands, alright the different illumination intensity's of adaptation applied environment and individual difference to the infrared light permeability like this, it is poor to have solved current finger vein image acquisition device adaptability, the unstable problem of finger vein image quality of gathering, and then improve finger vein's discrimination, promotion user experience.

Description

A kind of finger vein image acquisition device of self-adaptative adjustment light intensity
Technical field
This utility model is related to refer to vein identification technology, particularly to finger vein image acquisition device.
Background technology
Referring to vein identification technology is a kind of more advanced biometrics identification technology, and it utilizes the vein distribution in finger Image to carry out identification, have will not lose, will not stolen, memoryless password trouble, be not subject to rough coat, external rings The impact in border (temperature, humidity), the crowd that is suitable for is wide, accuracy rate is high, not reproducible, can not forge, the advantage of safe and convenient.
At present, referring to the general finger vein image acquisition method of vein image acquisition device is:Infrared using specific wavelength Light opponent refers to be irradiated, and is then obtained with imageing sensor and refers to vein image.But, during actual acquisition, different The applied environment of intensity of illumination and individuality can lead to finger vein image acquisition device to collect to the difference of infrared light penetrability The quality referring to vein image is unstable, has had a strong impact on the discrimination referring to vein.
Utility model content
For solving existing finger vein image acquisition device bad adaptability, collect refers to unstable the asking of vein image quality Topic, this utility model provides a kind of finger vein image acquisition device of self-adaptative adjustment light intensity.
The technical scheme that this utility model is adopted is:
A kind of finger vein image acquisition device of self-adaptative adjustment light intensity, including shell, infrared LED lamp, touch sensor, Infrared fileter, camera lens, imageing sensor, main processing block and reminding module, described shell is provided with finger draw-in groove, described Infrared LED lamp at least one row, and it is arranged on partly the going up on finger draw-in groove of shell, described infrared LED lamp direction Finger draw-in groove, the part of the corresponding finger head in described finger draw-in groove bottom and afterbody is provided with touch sensor, finger draw-in groove Part between the corresponding finger head in bottom and afterbody is provided with finger vena acquisition window, and described inside the shell is from top to bottom successively It is provided with just to the infrared fileter of finger venous collection window, camera lens and imageing sensor, described infrared LED lamp, touch pass Sensor, imageing sensor and reminding module are all connected with main processing block, described touch sensor when sensing finger, that is, to Main processing block sends the signal of telecommunication, and described main processing block receives the corresponding finger head in finger draw-in groove bottom and afterbody setting simultaneously Touch sensor send the signal of telecommunication when, send corresponding working control signal to infrared LED lamp and imageing sensor, red Outer LED sends infrared light and the finger being stuck in finger draw-in groove is irradiated, and imageing sensor gathers and refers to vein image, And the finger collecting vein image is transferred to main processing block, main processing block is to the finger vein image receiving in finger width The gradation of image meansigma methodss of each predetermined block closing on both sides boundary on degree direction are calculated, and by itself and the threshold prestoring Value is compared, and judges whether acquired image meets requirement, if image is unsatisfactory for requiring, it is right that main processing block then calculates Answer the dutycycle according to control signal for the adaptive optical of each infrared LED lamp, and send oneself of corresponding dutycycle to each infrared LED lamp Adapt to illumination control signal, each infrared LED lamp send self-adaptative adjustment after corresponding bright infrared light, image sensing thinks highly of New collection refers to vein image, and the new finger vein image collecting is transferred to main processing block, and main processing block is to reception To the new gradation of image referring to each predetermined block that vein image closes on both sides boundary on finger width direction average Value is calculated, and it is compared with the threshold value prestoring, and judges whether acquired image meets requirement, so carries out, Require until image meets, and finally prompting is made according to the prompting control signal that main processing block sends by reminding module.
Preferably, the width of described finger draw-in groove is 13~14mm.
Preferably, described main processing block is ARM or DSP or FPGA device.
Preferably, described image sensor is cmos sensor or ccd sensor.
Preferably, a length of 700nm~1000nm of infrared waveses that described infrared LED lamp sends, described infrared fileter is The infrared fileter in the extraneous light of 700nm~1000nm for the wavelength can be filtered.
Preferably, described reminding module is voice prompting device or/and display lamp.
Preferably, described infrared LED lamp has a row, and is arranged on the part of the side on finger draw-in groove of shell On, described infrared LED lamp is towards finger draw-in groove.
Preferably, described infrared LED lamp has a row, and is arranged on partly the going up directly over finger draw-in groove of shell, Described infrared LED lamp is towards finger draw-in groove.
Preferably, described infrared LED lamp has two rows, and be symmetricly set on the both sides on finger draw-in groove of shell Partly go up, described infrared LED lamp is towards finger draw-in groove.
Preferably, described infrared LED lamp obliquely 30 ° towards finger draw-in groove.
This utility model is judged to the quality of the image collecting by main processing block, is unsatisfactory for requiring in image When, the brightness of self-adaptative adjustment infrared LED lamp, and again vein image is referred to by imageing sensor collection, so carry out, thus Collect eventually and meet the finger vein image requiring, be so just suitable for the applied environment of different illumination intensity and individuality to infrared light The difference of permeability, improves the discrimination referring to vein.
Brief description
Fig. 1 is the modular structure of the finger vein image acquisition device of the self-adaptative adjustment light intensity of this utility model one embodiment Schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawings specific embodiment of the utility model is described further.
As shown in figure 1, the finger vein image acquisition device of the self-adaptative adjustment light intensity of the present embodiment includes shell, infrared LED, touch sensor, infrared fileter, camera lens, CMOS (Complementary Metal-OxideSemiconductor, Metal oxide semiconductor device) sensor, main processing block and reminding module, described shell is provided with finger draw-in groove, institute State an infrared LED lamp at least row, and be arranged on partly the going up on finger draw-in groove of shell, described infrared LED lamp court To finger draw-in groove, the part of the corresponding finger head in described finger draw-in groove bottom and afterbody is provided with touch sensor, finger card Part between the corresponding finger head of trench bottom and afterbody is provided with finger vena acquisition window, described inside the shell from top to bottom according to Secondary it is provided with just to the infrared fileter of finger venous collection window, camera lens and cmos sensor, described infrared LED lamp, touch Sensor, cmos sensor and reminding module are all connected with main processing block, described touch sensor when sensing finger, that is, Send the signal of telecommunication to main processing block, described main processing block receives the corresponding finger head in finger draw-in groove bottom simultaneously and afterbody sets During the signal of telecommunication that the touch sensor put sends, send corresponding working control signal to infrared LED lamp and cmos sensor, Infrared LED lamp sends infrared light and the finger being stuck in finger draw-in groove is irradiated, and cmos sensor gathers and refers to vein figure Picture, and the finger collecting vein image is transferred to main processing block, main processing block is to the finger vein image receiving in handss The gradation of image meansigma methodss closing on each predetermined block of both sides boundary on finger widths direction are calculated, and by its with prestore Threshold value be compared, judge whether acquired image meets requirement, if image is unsatisfactory for requiring, main processing block then calculates Go out the dutycycle according to control signal for the adaptive optical of each infrared LED lamp corresponding, and send corresponding dutycycle to each infrared LED lamp Adaptive optical shine control signal, each infrared LED lamp send self-adaptative adjustment after corresponding bright infrared light, CMOS sense Device Resurvey refers to vein image, and the new finger vein image collecting is transferred to main processing block, main processing block pair The new finger vein image receiving closes on the gradation of image of each predetermined block of both sides boundary on finger width direction Meansigma methodss are calculated, and it is compared with the threshold value prestoring, and judge whether acquired image meets requirement, so enter OK, require until image meets, and final being made according to the prompting control signal that main processing block sends by reminding module carries Show.
Preferably, the width of described finger draw-in groove is 13~14mm.The finger draw-in groove of this width range is suitable for human finger Width, and reduce overall volume to the full extent, can preferably fixed finger position, prevent finger from rotating, effectively reduce The interference to collection image for the outside high light, improves the stability of collection image so that this refers to vein image acquisition device exists Stable finger vein image all can be collected under outside high light and low light environment, and then improve Consumer's Experience.
Preferably, described main processing block is ARM (Advanced RISC Machines) processor or DSP (Digital Signal processing, Digital Signal Processing) chip or FPGA (Field-Programmable Gate Array, scene Programmable gate array) device.
Preferably, a length of 700nm~1000nm of infrared waveses that described infrared LED lamp sends, described infrared fileter is The infrared fileter in the extraneous light of 700nm~1000nm for the wavelength can be filtered.The infrared LED lamp of this wave-length coverage and infrared Optical filter coordinates, it is possible to obtain more visible finger vein image.
Preferably, described reminding module is voice prompting device and display lamp.
Preferably, described infrared LED lamp has two rows, and be symmetricly set on the both sides on finger draw-in groove of shell Partly go up, described infrared LED lamp is towards finger draw-in groove.
Preferably, described infrared LED lamp obliquely 30 ° towards finger draw-in groove.
It is apparent that above-described embodiment not unique embodiment of this utility model, before without departing from its technological essence Put, can also make and much simply change, as described infrared LED lamp has a row, and be arranged on shell positioned at finger draw-in groove it On partly the going up of side, described infrared LED lamp is towards finger draw-in groove;Described infrared LED lamp has a row, and is arranged on shell Partly going up directly over finger draw-in groove, described infrared LED lamp is towards finger draw-in groove;Cmos sensor CCD (Charge Coupled Device, charge coupled cell) sensor or other imageing sensors substitute;Described reminding module is voice message Device or display lamp, and so on, here is omitted.
This utility model is judged to the quality of the image collecting by main processing block, is unsatisfactory for requiring in image When, the brightness of self-adaptative adjustment infrared LED lamp, and again vein image is referred to by imageing sensor collection, so carry out, thus Collect eventually and meet the finger vein image requiring, be so just suitable for the applied environment of different illumination intensity and individuality to infrared light The difference of permeability, solves existing finger vein image acquisition device bad adaptability, and the finger vein image quality collecting is unstable Fixed problem, and then improve the discrimination referring to vein, lift Consumer's Experience.
Above in conjunction with accompanying drawing, embodiment of the present utility model is explained in detail, but this utility model is not limited to State embodiment, in the ken that those of ordinary skill in the art possess, can also be without departing from this utility model objective On the premise of make obtaining various change, also should be regarded as protection domain of the present utility model.

Claims (10)

1. a kind of finger vein image acquisition device of self-adaptative adjustment light intensity it is characterised in that:Including shell, infrared LED lamp, touch Touch sensor, infrared fileter, camera lens, imageing sensor, main processing block and reminding module, described shell is provided with finger Draw-in groove, a described infrared LED lamp at least row, and it is arranged on partly the going up on finger draw-in groove of shell, described infrared Towards finger draw-in groove, the part of the corresponding finger head in described finger draw-in groove bottom and afterbody is provided with touch sensor to LED, Part between the corresponding finger head in finger draw-in groove bottom and afterbody is provided with finger vena acquisition window, and described inside the shell is by upper To under be disposed with just to the infrared fileter of finger venous collection window, camera lens and imageing sensor, described infrared LED Lamp, touch sensor, imageing sensor and reminding module are all connected with main processing block, and described touch sensor is in one's hands in sensing During finger, send the signal of telecommunication to main processing block, described main processing block receives finger draw-in groove bottom simultaneously and corresponds to finger head During the signal of telecommunication sending with aft mounted touch sensor, send corresponding work to infrared LED lamp and imageing sensor Control signal, infrared LED lamp sends infrared light and the finger being stuck in finger draw-in groove is irradiated, and imageing sensor gathers Refer to vein image, and the finger collecting vein image is transferred to main processing block, main processing block is to the finger vein receiving The gradation of image meansigma methodss that image closes on each predetermined block of both sides boundary on finger width direction are calculated, and will It is compared with the threshold value prestoring, and judges whether acquired image meets requirement, if image is unsatisfactory for requiring, main process task mould Block then calculates the dutycycle according to control signal for the adaptive optical of each infrared LED lamp corresponding, and sends phase to each infrared LED lamp The adaptive optical answering dutycycle shines control signal, each infrared LED lamp send self-adaptative adjustment after corresponding bright infrared light, Imageing sensor Resurvey refers to vein image, and the new finger vein image collecting is transferred to main processing block, main place Reason module closes on each predetermined block of both sides boundary on finger width direction to the new finger vein image receiving Gradation of image meansigma methodss are calculated, and it is compared with the threshold value prestoring, and judge whether acquired image meets and want Ask, so carry out, require until image meets, and final control according to the prompting that main processing block sends by reminding module is believed Number make prompting.
2. self-adaptative adjustment light intensity according to claim 1 finger vein image acquisition device it is characterised in that:Described handss The width referring to draw-in groove is 13~14mm.
3. self-adaptative adjustment light intensity according to claim 1 finger vein image acquisition device it is characterised in that:Described master Processing module is ARM or DSP or FPGA.
4. self-adaptative adjustment light intensity according to claim 1 finger vein image acquisition device it is characterised in that:Described figure As sensor is cmos sensor or ccd sensor.
5. self-adaptative adjustment light intensity according to claim 1 finger vein image acquisition device it is characterised in that:Described red A length of 700nm~the 1000nm of infrared waveses that outer LED sends, described infrared fileter be can filter wavelength 700nm~ The infrared fileter of the extraneous light of 1000nm.
6. self-adaptative adjustment light intensity according to claim 1 finger vein image acquisition device it is characterised in that:Described carry Show that module is voice prompting device or/and display lamp.
7. self-adaptative adjustment light intensity according to claim 1 finger vein image acquisition device it is characterised in that:Described red Outer LED has a row, and is arranged on partly the going up of the side on finger draw-in groove of shell, described infrared LED lamp direction Finger draw-in groove.
8. self-adaptative adjustment light intensity according to claim 1 finger vein image acquisition device it is characterised in that:Described red Outer LED has a row, and is arranged on partly the going up directly over finger draw-in groove of shell, and described infrared LED lamp is towards finger Draw-in groove.
9. self-adaptative adjustment light intensity according to claim 1 finger vein image acquisition device it is characterised in that:Described red Outer LED has two rows, and is symmetricly set on partly the going up of the both sides on finger draw-in groove of shell, described infrared LED lamp Towards finger draw-in groove.
10. self-adaptative adjustment light intensity according to claim 1 finger vein image acquisition device it is characterised in that:Described Infrared LED lamp obliquely 30 ° towards finger draw-in groove.
CN201620715536.6U 2016-07-07 2016-07-07 Finger vein image acquisition device of self -adaptation adjustment light intensity Active CN205983504U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106960194A (en) * 2017-03-24 2017-07-18 徐晨 A kind of vein identification device
CN107092885A (en) * 2017-04-20 2017-08-25 重庆科技学院 In-line light source finger vein image acquisition device and its acquisition method
CN107832750A (en) * 2017-12-14 2018-03-23 北京乾沛科技有限公司 Refer to venous collection apparatus and method
CN108960068A (en) * 2018-06-05 2018-12-07 天津大学 For acquiring the light source brightness adjusting device and method of finger venous image
WO2019024320A1 (en) * 2017-08-01 2019-02-07 南京东屋信息科技有限公司 Finger vein image acquisition device and intelligent lock
CN112084883A (en) * 2020-08-18 2020-12-15 珠海格力电器股份有限公司 Finger vein collection method and device, finger vein identification equipment and storage medium
CN115668312A (en) * 2021-03-19 2023-01-31 东屋世安物联科技(江苏)股份有限公司 Finger vein image acquisition device and using method thereof

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106960194A (en) * 2017-03-24 2017-07-18 徐晨 A kind of vein identification device
CN107092885A (en) * 2017-04-20 2017-08-25 重庆科技学院 In-line light source finger vein image acquisition device and its acquisition method
CN107092885B (en) * 2017-04-20 2023-08-22 重庆科技学院 Linear light source finger vein image acquisition device and acquisition method thereof
WO2019024320A1 (en) * 2017-08-01 2019-02-07 南京东屋信息科技有限公司 Finger vein image acquisition device and intelligent lock
CN107832750A (en) * 2017-12-14 2018-03-23 北京乾沛科技有限公司 Refer to venous collection apparatus and method
CN107832750B (en) * 2017-12-14 2024-02-13 北京乾沛科技有限公司 Finger vein collection device and method
CN108960068A (en) * 2018-06-05 2018-12-07 天津大学 For acquiring the light source brightness adjusting device and method of finger venous image
CN108960068B (en) * 2018-06-05 2021-10-29 天津大学 Light source brightness adjusting device and method for collecting finger vein image
CN112084883A (en) * 2020-08-18 2020-12-15 珠海格力电器股份有限公司 Finger vein collection method and device, finger vein identification equipment and storage medium
CN112084883B (en) * 2020-08-18 2024-08-13 珠海格力电器股份有限公司 Finger vein collection method, device, finger vein identification equipment and storage medium
CN115668312A (en) * 2021-03-19 2023-01-31 东屋世安物联科技(江苏)股份有限公司 Finger vein image acquisition device and using method thereof

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Address after: 030006 Room 0906, 9th Floor, Block C, Cleaning and Control Innovation Base, 529 South Central Street, Taiyuan Xuefu Park, Shanxi Comprehensive Reform Demonstration Area, Taiyuan City, Shanxi Province

Patentee after: Holy Point Century Technology Co., Ltd.

Address before: 030006 Room 0906, 9th Floor, Block C, Cleaning and Control Innovation Base, 529 Nanzhonghuan Street, Taiyuan City, Shanxi Province

Patentee before: Shanxi sunpoint century Polytron Technologies Inc

PE01 Entry into force of the registration of the contract for pledge of patent right
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Denomination of utility model: Finger vein image acquisition device of self -adaptation adjustment light intensity

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Denomination of utility model: A digital vein image acquisition device with adaptive adjustment of light intensity

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