CN202058176U - Embedded finger vein identification device - Google Patents
Embedded finger vein identification device Download PDFInfo
- Publication number
- CN202058176U CN202058176U CN201120161597XU CN201120161597U CN202058176U CN 202058176 U CN202058176 U CN 202058176U CN 201120161597X U CN201120161597X U CN 201120161597XU CN 201120161597 U CN201120161597 U CN 201120161597U CN 202058176 U CN202058176 U CN 202058176U
- Authority
- CN
- China
- Prior art keywords
- finger
- housing
- embedded
- light source
- vein
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The utility model relates to an embedded finger vein identification device which is composed of a light source control circuit, an infrared grouping light source, a finger detection position, flat capacitors, a human body characteristic detection circuit, a vein acquisition window, a liquid crystal display, an infrared light filter, a finger vein imaging device, an embedded system board, a communication interface, a voice prompt, and a housing. The bottom of the housing is provided with the finger vein imaging device. The top of the finger vein imaging device is provided with the infrared light filter. The top of the housing is provided with the vein acquisition window. One side in the housing is provided with the embedded system board. One side above the housing is provided with a support. The embedded finger vein identification device has a small volume and a reasonable design, and can extract a high quality finger vein image rapidly and accurately, and then carry out the matching and identification. Besides, the embedded finger vein identification device is safe since the device can eliminate the interference of a nonhuman finger, so the database management is reliable.
Description
Technical field
The utility model relates to the biological characteristic part recognition device of human body, especially a kind of embedded finger vena recognition device.
Background technology
Finger vein identification technology is the new bio recognition technology that recent development is got up, and the feature of employing is present in inside of human body, can't duplicate, and depend on live body and exist, and has higher antifalsification.Finger vena base of recognition and key are the collections of finger venous image.Yet because human finger all is that the comparatively tiny rear end of front end is comparatively thick, light transmission capacity difference to some extent in same individual finger front and back end under the same light source is between joint and also difference to some extent of joint stage casing part light transmission capacity; Different Individual finger size, thickness all variant (some most females fingers vein blood vessel is very tiny).It is inhomogeneous that the different parts exposure may appear pointing in the vein image of gathering, and integral body or partial exposure deficiency, problem such as over-exposed cause harvester can't obtain comparatively desirable original vein image, later stage feature extraction and to be matched to power little, and accuracy is low.Image collecting device is in the market often only gathered vein image in addition, can not judge whether adopted object is human finger, finger of forging or vein image card also may be cheated harvester and smoothly by identification, be made the higher vein identification of safe class originally have potential safety hazard.
One prior art is that September 2, publication number in 2009 are that CN101520840A, denomination of invention are the Chinese patent of " finger vein image acquisition device and method " as the open date, discloses a kind of scheme of adjusting vein image brightness by detection finger venous image central area mean flow rate adjustment shutter; Another kind of prior art is that March 2, publication number in 2011 are CN101982826A, the denomination of invention Chinese patent for " the self-adjusting finger vena collection and recognition method of a kind of light-source brightness " as the open date, and having disclosed a kind of is the scheme of quality adjustment light-source brightness of the rectangular area at center with horizontal axis and vertical axis according to vein image; How yet the technical scheme that this invention provides all not mentioned avoids that individual finger front and back end varies in size if being, the scheme of problem such as brightness irregularities between joint stage casing and joint, the more not mentioned technical scheme that how to improve the vein image contrast, do not mention how judging whether measurand is human finger, can't overcome brightness irregularities and cause part details information dropout and utilize to forge finger or the potential safety hazard of image deception harvester.
Finger vein recognition system in the market, but all adopt front-end collection to add the branch body structure of upper main frame, bulky, connection complexity, be not easy to loading and unloading and mobile, do not see the Related product of the embedded finger vena identification that volume is little, integrated level is high as yet, in view of above-mentioned many reasons, needing to improve vein recognition system should.
The utility model content
The utility model for brightness irregularities between the joint that solves finger vein recognition system, cause part details information dropout and utilization, forge the potential safety hazard of finger or image deception harvester; By rational design, a kind of embedded finger vena recognition device is provided, the near-infrared light source transmittance, integrated level height, volume are little, effective, safe and reliable.
The utility model is in order to realize above-mentioned goal of the invention, adopt following technical scheme: be to constitute by, control circuit for light source, infrared grouping light source, finger detecting position, plate condenser, characteristics of human body's testing circuit, vein acquisition window, LCD, infrared fileter, finger vena imaging device, embedded system plate, communication interface, voice suggestion, housing; Bottom in the housing is provided with the finger vena imaging device, and finger vena imaging device top is provided with infrared fileter; The housing top is provided with the vein acquisition window, and vein acquisition window periphery is provided with characteristics of human body's testing circuit; Vein acquisition window top is provided with the finger detecting position, and finger detecting position both sides are provided with plate condenser; Finger vena imaging device one side is provided with communication interface, and a side is provided with the embedded system plate in the housing, and opposite side is provided with LCD in the housing, and the LCD below is provided with voice suggestion; Housing top one side is provided with support, and the support top is provided with crossbeam, and the crossbeam below is provided with control circuit for light source, and the control circuit for light source below is provided with infrared grouping light source; Finger vena imaging device in corresponding vein acquisition window of infrared grouping light source and the housing.
Beneficial effect: comprise housing and the infrared grouping light source, the control circuit for light source that are installed in housing top; The infrared light supply below is provided with finger detecting position and human finger pick-up unit; Object inside is provided with finger vena imaging device, communication interface, embedded system plate and information indicating apparatus.
Described embedded system plate links to each other with information indicating apparatus with control circuit for light source, human finger pick-up unit, finger vena imaging device, communication interface by circuit, according to the fast automatic adjustment light source of individuality finger difference, obtain the high-quality vein image and carry out feature extraction and coupling identification, then by communication interface output recognition result; Described information indicating apparatus matching embedded type system board also possesses testing process information indicating and feature database management function.
Described near-infrared light source centre wavelength is 780nm or 850nm, divide three groups of brightness independent adjustment continuously, effectively solve owing to the different too small problems that disappear of the even parts of fine veinlet of vein image brightness disproportionation contrast that cause of transmittance intensity between finger front and back end difference in size, joint stage casing and joint.
Capacity at the plate condenser of pointing detecting position front end both sides puts into or leaves the generation specific change with human finger, this variation is drawn the information that whether has human finger to put into by the testing circuit detection calculations; The embedded system plate obtains to start light source by 1 control circuit for light source after the finger placement information, near-infrared light source emits beam from being put in the finger back incident of finger detecting position, see through revenue and expenditure tissue back by the vein acquisition window, the visible light spuious through the infrared fileter filtering forms finger venous image in image collecting device; The embedded system plate obtains image and carries out graphical analysis from image collecting device, detect finger information in place, adjust light source automatically, obtain the finger venous image of high-quality, high-contrast to optimum condition, carry out feature extraction, coupling identification then, by communication interface output recognition result.LCD provides relevant information matching embedded type system board where necessary with voice suggestion and realizes testing process information indicating and feature database management function.
Near-infrared light source grouping synoptic diagram among Fig. 1, near-infrared light source centre wavelength is 780nm or 850nm, divides three groups of S1, S2, S3, the position respectively corresponding finger preceding, in back three sections, every group of brightness is independent to be adjusted continuously.The human finger universal characteristics all is that the tiny rear end of front end is thick, and the light source of single brightness will inevitably obtain the darker brightness irregularities vein image of the brighter back segment of front end; In addition, the light ray energy loss by the joint stage casing is greater than by joint gap light, and the brightness of the inevitable joint gap portion of single light source is far above the joint stage casing, and the difference of brightness can cause the disappearance of local tiny vein blood vessel image.The grouping light source is adjusted light intensity to produce the high-quality finger venous image that brightness is even, train of thought is clear, contrast is high according to the Intelligent Dynamic ground, position of finger front and back end difference in size, joint stage casing and joint seam.
Fig. 3 has described detecting position structural representation among Fig. 1, according to the general rounded ergonomics feature of finger, the finger detecting position is designed to the circular arc flute profile and detects to be fit to different big or small fingers, the translation about the position can not take place when flute profile design had simultaneously ensured the finger placement; The vein acquisition window is positioned at finger detecting position bottom, is of a size of 13 * 45, promptly guarantees to have sufficient vein image sample to see through window, guarantee again to as can not point the light leakage phenomena of both sides during the less finger collection of indivedual women.Plate condenser is positioned at finger detecting position leading portion both sides external, and having ensured when having only finger fully to put into could detection trigger, reduces to disturb and moves.
In order to reduce power consumption and protective device, prolongation infrared light supply and image collecting device serviceable life, light source and image collecting device all are not in closed condition when having human detection; Effective in order to ensure testing process in addition, prevent that the start detection descendant from forging finger or image deception harvester for extracting fast to point to change, stop immediately detecting in case find to point to withdraw, withdraw from all operations, further improve the security of system.
1. the wait human finger is put into the finger detection behind the system initialization;
2. detect finger and put into, the startup light source is to original intensity and open image collecting device;
3. obtain image and carry out motion detection, confirm finger situation in place, during provide corresponding information;
4. point in place after, obtain image calculation Bt, carry out coarse adjustment: earlier Bt and threshold interval T are compared the synchronous adjustment light source overall brightness that divides into groups
5. coarse adjustment is obtained image calculation Bf after finishing, Bm, and Br carries out fine tuning: relatively control corresponding grouping light source S1, S2 and S3 realization brightness normalization with T respectively;
6. strengthen after fine tuning is finished: obtain image calculation Bt, in threshold interval T, search for the maximal value Max (Dt) of vein and background luminance difference Dt, and locate to gather the high-quality finger venous image at Max (Dt);
7. finger vein features is extracted;
8. retrieve the vein pattern database and mate identification;
9. export recognition result, and provide information;
10. close light source and image collecting device;
Above content be in conjunction with embodiment to further specifying that the utility model is made, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as protection scope of the present invention.
Described human finger pick-up unit comprises capacity plate antenna inductor and the characteristics of human body's testing circuit near the finger front end that is arranged on finger detecting position both sides, utilize the capacity plate antenna media variations to influence the technology of capacity, be used to judge whether measured object is real human finger, avoid foreign matter or the artificial flase drop of forging finger or image.
Described embedded system plate links to each other with image collecting device, utilize image processing techniques to detect information such as tested finger size, thickness, joint position, produce the best packet light intensity and adjust control information, obtain the high-contrast finger venous image and carry out feature extraction, coupling identification, and by communication interface input recognition result.
Described information indicating apparatus matching embedded type system board also possesses testing process information indicating and feature database management function.
Volume reasonable in design is little, extracts high-quality finger vein image, coupling identification rapidly and accurately, gets rid of non-human finger and disturbs safety, data base administration reliable.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is: a kind of embedded finger vena recognition device structural representation.
Fig. 2 is: a kind of near-infrared light source structural representation of embedded finger vena recognition device;
Fig. 3 is: a kind of finger detecting position structural representation of embedded finger vena recognition device;
Among Fig. 1 .2.3.: control circuit for light source 1, infrared grouping light source 2, finger detecting position 3, plate condenser 4, characteristics of human body's testing circuit 5, vein acquisition window 6, LCD 7, infrared fileter 8, finger vena imaging device 9, embedded system plate 10, communication interface 11, voice suggestion 12, housing 13.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment:
As shown in FIG., the bottom in the housing 13 is provided with finger vena imaging device 9, and finger vena imaging device 9 tops are provided with infrared fileter 8; Housing 13 tops are provided with vein acquisition window 6, and vein acquisition window 6 peripheries are provided with characteristics of human body's testing circuit 5; Vein acquisition window 6 tops are provided with finger detecting position 3, and finger detecting position 3 both sides are provided with plate condenser 4; Finger vena imaging device 9 one sides are provided with communication interface 11, and a side is provided with embedded system plate 10 in the housing 13, and opposite side is provided with LCD 7 in the housing 13, and LCD 7 belows are provided with voice suggestion 12; Housing 13 tops one side is provided with support, and the support top is provided with crossbeam, and the crossbeam below is provided with control circuit for light source 1, and control circuit for light source 1 below is provided with infrared grouping light source 2; Infrared grouping light source 2 corresponding vein acquisition windows 6 and the interior finger vena imaging device 9 of housing (13).
Claims (6)
1. embedded finger vena recognition device, by: control circuit for light source (1), infrared grouping light source (2), finger detecting position (3), plate condenser (4), characteristics of human body's testing circuit (5), vein acquisition window (6), LCD (7), infrared fileter (8), finger vena imaging device (9), embedded system plate (10), communication interface (11), voice suggestion (12), housing (13) constitute; It is characterized in that: the bottom in the housing (13) is provided with finger vena imaging device (9), and finger vena imaging device (9) top is provided with infrared fileter (8).
2. according to a kind of embedded finger vena recognition device described in the claim 1, it is characterized in that: housing (13) top is provided with vein acquisition window (6), and vein acquisition window (6) periphery is provided with characteristics of human body's testing circuit (5).
3. according to a kind of embedded finger vena recognition device described in the claim 1, it is characterized in that: vein acquisition window (6) top is provided with finger detecting position (3), and finger detecting position (3) both sides are provided with plate condenser (4).
4. according to a kind of embedded finger vena recognition device described in the claim 1, it is characterized in that: finger vena imaging device (9) one sides are provided with communication interface (11), a side is provided with embedded system plate 10 in the housing (13), the interior opposite side of housing (13) is provided with LCD (7), and LCD (7) below is provided with voice suggestion (12).
5. according to a kind of embedded finger vena recognition device described in the claim 1, it is characterized in that: housing (13) top one side is provided with support, the support top is provided with crossbeam, and the crossbeam below is provided with control circuit for light source (1), and control circuit for light source (1) below is provided with infrared grouping light source (2).
6. according to a kind of embedded finger vena recognition device described in the claim 1, it is characterized in that: corresponding vein acquisition window of infrared grouping light source (2) (6) and the interior finger vena imaging device (9) of housing (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120161597XU CN202058176U (en) | 2011-05-20 | 2011-05-20 | Embedded finger vein identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120161597XU CN202058176U (en) | 2011-05-20 | 2011-05-20 | Embedded finger vein identification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202058176U true CN202058176U (en) | 2011-11-30 |
Family
ID=45018145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120161597XU Expired - Fee Related CN202058176U (en) | 2011-05-20 | 2011-05-20 | Embedded finger vein identification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202058176U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102945363A (en) * | 2012-10-30 | 2013-02-27 | 哈尔滨工业大学 | Finger vein image acquisition device capable of automatically adjusting irradiation light intensity and acquisition method thereof |
| CN104598884A (en) * | 2015-01-20 | 2015-05-06 | 深圳市维亿魄科技有限公司 | Human body finger vein recognition device |
| CN104657723A (en) * | 2015-03-12 | 2015-05-27 | 成都芯软科技发展有限公司 | Wall-mounted automatic palm vein authentication machine |
| CN104706324A (en) * | 2013-04-02 | 2015-06-17 | 林学芹 | Vein observation device and method for lowering power consumption of same |
| WO2016019679A1 (en) * | 2014-08-08 | 2016-02-11 | 常熟安智生物识别技术有限公司 | Intelligent finger vein recognition system |
| WO2017088505A1 (en) * | 2015-11-24 | 2017-06-01 | 京东方科技集团股份有限公司 | Smart wearable device and biometric information detection method |
| CN109844821A (en) * | 2017-08-01 | 2019-06-04 | 南京东屋信息科技有限公司 | Finger vein image acquisition device and smart lock |
| CN110688932A (en) * | 2019-09-20 | 2020-01-14 | 威海华菱光电股份有限公司 | Vein recognition method and device |
-
2011
- 2011-05-20 CN CN201120161597XU patent/CN202058176U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102945363A (en) * | 2012-10-30 | 2013-02-27 | 哈尔滨工业大学 | Finger vein image acquisition device capable of automatically adjusting irradiation light intensity and acquisition method thereof |
| CN102945363B (en) * | 2012-10-30 | 2015-07-22 | 哈尔滨工业大学 | Finger vein image acquisition device capable of automatically adjusting irradiation light intensity and acquisition method thereof |
| CN104706324A (en) * | 2013-04-02 | 2015-06-17 | 林学芹 | Vein observation device and method for lowering power consumption of same |
| WO2016019679A1 (en) * | 2014-08-08 | 2016-02-11 | 常熟安智生物识别技术有限公司 | Intelligent finger vein recognition system |
| CN104598884A (en) * | 2015-01-20 | 2015-05-06 | 深圳市维亿魄科技有限公司 | Human body finger vein recognition device |
| CN104657723A (en) * | 2015-03-12 | 2015-05-27 | 成都芯软科技发展有限公司 | Wall-mounted automatic palm vein authentication machine |
| WO2017088505A1 (en) * | 2015-11-24 | 2017-06-01 | 京东方科技集团股份有限公司 | Smart wearable device and biometric information detection method |
| CN109844821A (en) * | 2017-08-01 | 2019-06-04 | 南京东屋信息科技有限公司 | Finger vein image acquisition device and smart lock |
| CN110688932A (en) * | 2019-09-20 | 2020-01-14 | 威海华菱光电股份有限公司 | Vein recognition method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202058176U (en) | Embedded finger vein identification device | |
| CN101982826B (en) | Finger vein collection and identification method capable of automatically adjusting brightness of light source | |
| CN104297160B (en) | Congou black tea fermentation appropriate degree discrimination method and device | |
| CN104616001B (en) | Fingerprint recognition system and fingerprint identification method | |
| CN102169608A (en) | Design method of multispectral paper currency detector | |
| CN104143035B (en) | A kind of method splitting breast lesion | |
| CN108629293B (en) | Self-adaptive near-infrared iris image acquisition method with feedback mechanism | |
| CN104990892B (en) | The spectrum picture Undamaged determination method for establishing model and seeds idenmtification method of seed | |
| CN104573676B (en) | The iris identification device of the reflective interference of safety goggles | |
| CN107669283A (en) | Spectacle driving fatigue monitoring warning device based on multi-feature fusion and method | |
| CN102867179A (en) | Method for detecting acquisition quality of digital certificate photo | |
| CN106125151A (en) | Anti-detector of taking on the sly based on smart mobile phone | |
| CN102222225B (en) | Finger vein image anti-counterfeiting acquiring method | |
| CN202771437U (en) | Multi-modal identity authentication device based on biological characteristics of finger part | |
| CN106295658A (en) | A kind of transformer station readings of pointer type meters automatic recognition system | |
| CN103679878A (en) | Access control system based on finger vein recognition | |
| CN106303296A (en) | A kind of image mosaic emerging system | |
| CN102945363B (en) | Finger vein image acquisition device capable of automatically adjusting irradiation light intensity and acquisition method thereof | |
| CN109975290A (en) | A kind of Bacteria Detection quick analytic instrument | |
| CN201421430Y (en) | Water supply treatment flocculation effect detection device | |
| CN102495067B (en) | System for identifying impurities of edible funguses on line | |
| CN108549837A (en) | A kind of slidingtype finger vein image acquisition equipment and its method for acquiring vein image | |
| CN105466864A (en) | Icteric sclera detector based on colorimetric analysis | |
| CN104658105B (en) | Intelligent video analysis multi-person early-warning device and method | |
| CN201952525U (en) | Control system for monocrystalline silicon diameter measurement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20130520 |