CN202486801U - Finger vein acquisition device - Google Patents
Finger vein acquisition device Download PDFInfo
- Publication number
- CN202486801U CN202486801U CN2012200457530U CN201220045753U CN202486801U CN 202486801 U CN202486801 U CN 202486801U CN 2012200457530 U CN2012200457530 U CN 2012200457530U CN 201220045753 U CN201220045753 U CN 201220045753U CN 202486801 U CN202486801 U CN 202486801U
- Authority
- CN
- China
- Prior art keywords
- finger
- chip
- finger vena
- housing
- cmos sensor
- 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)
- Image Input (AREA)
Abstract
A finger vein acquisition device comprises a housing a CMOS sensor and a backlight unit, and is characterized in that a finger hole is formed in the middle of the housing; a finger press surface is arranged opposite to the finger hole in the housing; a finger vein image acquisition device, which comprises a circuit control module and an optical system, is arranged in the housing; the circuit control module comprises a main control chip, a crystal oscillator circuit, a storage unit chip, an encryption chip, a pressure-reduction integrated circuit and a data communication unit; and the optical system is a lens system which comprises an infrared filter, a plane mirror and a plano-convex lens. According to the device provided by the utility model, a modular design is adopted, the optical system adopts a reasonable light source design, the length is reduced, a low-price non-professional lens can be used, the circuit control module adopts a small package manner, the defect that a current finger vein acquisition device of the same type has a large size is solved, the system cost is greatly reduced, and the carrying is convenient. Therefore, the device provided by the utility model can be used in combination with a computer and greatly improves the finger vein acquisition rate and the identification precision.
Description
Technical field
The utility model relates to method or the device that the applying electronic circuit carries out living things feature recognition, particularly relates to a kind of finger vena harvester.
Background technology
Fingerprint recognition is based on the outer layer feature of somatic fingerprint, is difficult to that the related personnel is forged fingerprint on residual smooth object surface and carries out false proofly, has potential potential safety hazard.And finger vena is positioned at below the human epidermal, almost can not forge, and vein is discerned as emerging biological identification technology, and security is very high, can not lose, and can not stolen, memoryless password burden.But, existing finger vena harvester, volume is all bigger, and the automatic exposure meeting of some device is excessively or not enough, some device even do not have the function of automatic exposure, the vein image sharpness is poor.
Summary of the invention
The utility model technical matters to be solved is the defective that remedies above-mentioned prior art, and a kind of harvester of finger vena is provided.
The technical matters of the utility model solves through following technical scheme.
This finger vena harvester; Comprise housing, be arranged on complementary metal oxide semiconductor (CMOS) (Complementary Metal-Oxide-Semiconductor, initialism the are CMOS) sensor and the back light unit that is arranged on the housing top of the image receiving plane of housing below.
The characteristics of this finger vena harvester are:
Said housing middle part is provided with finger hole, and the position relative with finger hole is the finger presses face in housing, and said finger presses face is the Baltimore groove as the finger vena acquisition window, and the size of finger vena acquisition window is greater than 10.0mm * 25.0mm.Acquisition window is a Baltimore groove, and convenient finger stretches into and pushes, and the light of gathering finger venous image information is presented on the image receiving plane.
In said housing, be provided with the finger vein image acquisition device that comprises circuit control module and optical system.
Said circuit control module comprises that controlling said cmos sensor accomplishes the main control chip of acquisition of image data, the crystal oscillating circuit of clock signal to main control chip, storage unit chip, encryption chip, step-down integrated circuit are provided; And carrying out the data communication unit of data transmission with the computing machine communication, said main control chip is connected with cmos sensor, crystal oscillating circuit, storage unit chip, encryption chip, step-down integrated circuit and data communication unit respectively.
Said optical system is a lens combination; Said lens combination comprises that complying with light path is installed in infrared fileter under the finger vena acquisition window, is arranged on plane mirror and plano-convex lens under the infrared fileter; Said plane mirror becomes 45 ° of angles with surface level; Light is accurately reflexed in the plano-convex lens of placing perpendicular to the bottom surface, and said plane mirror is used to prolong light path, makes the volume miniaturization more of device; Light gets into plano-convex lens through the plane reflection mirror reflection; Refraction advances to be arranged on the cmos sensor of images acquired on the image receiving plane again, converts the finger venous image that receives to electric signal output, carries out the collection of finger venous image.
The technical matters of the utility model solves through following further technical scheme.
Preferably, said main control chip is that the model that U.S. Cypress semiconductor company produces is the main control chip of CY7C68013A.
Said crystal oscillating circuit is used for clock signal to said main control chip being provided.
Said storage unit chip is the storage unit chip that stores the calibration curve that is used for automatic exposure.
Preferably, said storage unit chip is that the model that U.S. Atmel company produces is the storage chip of AT24C64CN-SH-B (64K).
Preferably; Said encryption chip is that the model that Shenzhen SDMC Technology Co., Ltd. produces is the encryption chip of DM2016N, is used to download own software algorithm and code, to user's significant data protection comprehensive, high degree of safety is provided; Safeguard self rights and interests, avoid software piracy.
Said step-down integrated circuit is used for to main control chip and cmos sensor power supply being provided after the power supply step-down from the USB Connection Block,
Said data communication unit is used for uniting use with computing machine, to accomplish the collection of user's finger vena, finger vena comparison, abnormal alarm, control signal output function, has significantly improved finger vena acquisition rate and accuracy of identification.
Said cmos sensor is the cmos sensor of at least 8.215 ten thousand pixels; Image resolution ratio is at least 500dpi; Meet Chinese public security department and U.S. FBI (Federal Bureau of Investigation, initialism is FBI) about reaching the requirement that image resolution ratio is 500dpi.
Preferably; Said cmos sensor is that the model that U.S. Aptina company produces is advanced video graphic array (the Super Video Graphics Array of MT9V117; Initialism is SVGA) cmos sensor, by main control chip clock signal, reset signal, synchronizing signal and I are provided
2The C signal is controlled, and the data that collect directly are sent to said main control chip.
Infrared fileter in the said optical system, the spacing of plane mirror and plano-convex lens is adjusted according to picture quality.
Said plane mirror is of a size of 21mm * 27mm.
Said back light unit comprises near infrared light source and brightness adjustment unit is set; One group of wavelength that said near infrared light source is mounted in directly over the finger vena acquisition window is the near-infrared luminous diode (LED) of 850nm; The infrared-ray that is used for the transmission finger, said brightness adjustment unit is based on the brightness in the calibration curve adjustment near infrared light source that is used for automatic exposure of said storage unit chip-stored.
The beneficial effect of the utility model and prior art contrast is:
Adopt modular design; Its optical system has adopted reasonable light source design, has reduced length, can use the cheap non-professional camera lens; The circuit control module adopts little encapsulation; Overcome the existing bulky defective of finger vena harvester of the same type, greatly reduced system cost, and be easy to carry; Can also unite with computing machine and be used to complete the collection of user's finger vena, finger vena comparison, abnormal alarm, control signal output function, significantly improve finger vena acquisition rate and accuracy of identification.
Description of drawings
Fig. 1 is the composition block scheme of the utility model embodiment;
Fig. 2 is the composition block scheme of the circuit control module of the utility model embodiment;
Fig. 3 is the index path of the utility model embodiment.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described.
A kind of finger vena harvester shown in Fig. 1～3, comprise housing, be arranged on housing below the image receiving plane cmos sensor 2 and be arranged on the back light unit 12 of housing top.
The housing middle part is provided with finger hole, and the position relative with finger hole is the finger presses face in housing, and the finger presses face is the Baltimore groove as the finger vena acquisition window, and the size of finger vena acquisition window is greater than 10.0mm * 25.0mm.Acquisition window is a Baltimore groove, and convenient finger stretches into and pushes, and the light of gathering finger venous image information is presented on the image receiving plane.
In housing, be provided with the finger vein image acquisition device that comprises circuit control module and optical system.
The circuit control module comprises that control cmos sensor 2 is accomplished the main control chip 7 of acquisition of image data, the crystal oscillating circuit 5 of clock signal to main control chip 7 is provided, storage unit chip 10, encryption chip 1, step-down integrated circuit 11 and carry out the data communication unit 6 of data transmission with the computing machine communication; Main control chip 7 respectively with cmos sensor 2, crystal oscillating circuit 5, storage unit chip 10, encryption chip 1, step-down integrated circuit 11, and data communication unit 6 connects.
Optical system is a lens combination; Comprise that complying with light path is installed in infrared fileter 9 under the finger vena acquisition window, is arranged on plane mirror 8 and plano-convex lens 3 under the infrared fileter 9, plane mirror 8 becomes 45 ° of angles with surface level, light is accurately reflexed in the plano-convex lens of placing perpendicular to the bottom surface 3; Plane mirror 8 is used to prolong light path; Make the volume miniaturization more of device, light gets into plano-convex lens 3 through plane mirror 8 reflections, and refraction advances to be arranged on the cmos sensor 2 of images acquired on the image receiving plane again; Convert the finger venous image that receives to electric signal output, carry out the collection of finger venous image.
Main control chip 7 is that the model that U.S. Cypress semiconductor company produces is the main control chip of CY7C68013A.
Crystal oscillating circuit 5 is used for clock signal to main control chip 7 being provided.
Storage unit chip 10 is that the model that stores the calibration curve that is used for automatic exposure that U.S. Atmel company produces is the storage chip of AT24C64CN-SH-B (64K).
Encryption chip 1 is that the model that Shenzhen SDMC Technology Co., Ltd. produces is the encryption chip of DM2016N; Be used to download own software algorithm and code; To user's significant data protection comprehensive, high degree of safety is provided, safeguards self rights and interests, avoid software piracy.
Step-down integrated circuit 11 is used for to main control chip and cmos sensor power supply being provided after the power supply step-down from the USB Connection Block,
Data communication unit 6 is used for uniting use with computing machine, to accomplish functions such as the collection of user's finger vena, finger vena comparison, abnormal alarm, control signal output, effectively improves finger vena acquisition rate and accuracy of identification.
Cmos sensor 2 is that the model that U.S. Aptina company produces is the SVGA cmos sensor of at least 8.215 ten thousand pixels of MT9V117; Image resolution ratio is at least 500dpi; Meet that Chinese public security department is relevant with U.S. FBI must to reach the requirement that image resolution ratio is 500dpi, clock signal, reset signal, synchronizing signal and I are provided by main control chip 7
2The C signal is controlled, and the data that collect directly are sent to main control chip 7.
Infrared fileter 9 in the optical system, 3 spacings of plane mirror 8 and plano-convex lens are adjusted according to picture quality.
Plane mirror 8 is of a size of 21mm * 27mm.
Back light unit 12 comprises near infrared light source 4 and brightness adjustment unit, and one group of wavelength that near infrared light source 4 is mounted in directly over the finger vena acquisition window is the near-infrared luminous diode (LED) of 850nm, is used for the infrared-ray of transmission finger; The brightness adjustment unit is based on the brightness in the calibration curve adjustment near infrared light source 4 that is used for automatic exposure of said storage unit chip-stored.
The course of work that this embodiment is carried out the finger vena collection is following:
The finger vena of the infrared light irradiating biological body that send near infrared light source 4; The vein transmitted light reflects on the cmos sensor 2 that into is arranged on images acquired on the image receiving plane through optical system; Convert the single finger venous image that receives to electric signal output, carry out the collection of finger venous image.
Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.Those of ordinary skill for technical field under the utility model; Under the prerequisite that does not break away from the utility model design, make some alternative or obvious modification that are equal to; And performance or purposes are identical, all should be regarded as belonging to the scope of patent protection that the utility model is confirmed by claims of being submitted to.
Claims (10)
1. finger vena harvester, comprise housing, be arranged on the housing below the image receiving plane the complementary metal oxide semiconductor (CMOS) cmos sensor and be arranged on the back light unit of housing top, it is characterized in that:
Said housing middle part is provided with finger hole, and the position relative with finger hole is the finger presses face in housing, and said finger presses face is the Baltimore groove as the finger vena acquisition window, and the size of finger vena acquisition window is greater than 10.0mm * 25.0mm;
In said housing, be provided with the finger vein image acquisition device that comprises circuit control module and optical system;
Said circuit control module comprises that controlling said cmos sensor accomplishes the main control chip of acquisition of image data, the crystal oscillating circuit of clock signal to main control chip, storage unit chip, encryption chip, step-down integrated circuit are provided; And carrying out the data communication unit of data transmission with the computing machine communication, said main control chip is connected with cmos sensor, crystal oscillating circuit, storage unit chip, encryption chip, step-down integrated circuit and data communication unit respectively;
Said optical system is a lens combination; Said lens combination comprises that complying with light path is installed in infrared fileter under the finger vena acquisition window, is arranged on plane mirror and plano-convex lens under the infrared fileter, and said plane mirror becomes 45 ° of angles with surface level.
2. finger vena harvester as claimed in claim 1 is characterized in that:
Said main control chip is that the model that U.S. Cypress semiconductor company produces is the main control chip of CY7C68013A.
3. according to claim 1 or claim 2 finger vena harvester is characterized in that:
Said storage unit chip is the storage unit chip that stores the calibration curve that is used for automatic exposure.
4. finger vena harvester as claimed in claim 3 is characterized in that:
Said storage unit chip is that the model that U.S. Atmel company produces is the storage chip of AT24C64CN-SH-B.
5. finger vena harvester as claimed in claim 4 is characterized in that:
Said encryption chip is that the model that Shenzhen SDMC Technology Co., Ltd. produces is the encryption chip of DM2016N.
6. finger vena harvester as claimed in claim 5 is characterized in that:
Said cmos sensor is the cmos sensor of at least 8.215 ten thousand pixels, and image resolution ratio is at least 500dpi.
7. finger vena harvester as claimed in claim 6 is characterized in that:
Said cmos sensor is that the model that U.S. Aptina company produces is the cmos sensor of the advanced video graphic array SVGA of MT9V117.
8. finger vena harvester as claimed in claim 7 is characterized in that:
Infrared fileter in the said optical system, the spacing of plane mirror and plano-convex lens is adjusted according to picture quality.
9. finger vena harvester as claimed in claim 8 is characterized in that:
Said plane mirror is of a size of 21mm * 27mm.
10. finger vena harvester as claimed in claim 9 is characterized in that:
Said back light unit comprises near infrared light source and brightness adjustment unit is set that one group of wavelength that said near infrared light source is mounted in directly over the finger vena acquisition window is the near-infrared luminous diode (LED) of 850nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200457530U CN202486801U (en) | 2012-02-13 | 2012-02-13 | Finger vein acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200457530U CN202486801U (en) | 2012-02-13 | 2012-02-13 | Finger vein acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202486801U true CN202486801U (en) | 2012-10-10 |
Family
ID=46961206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200457530U Expired - Fee Related CN202486801U (en) | 2012-02-13 | 2012-02-13 | Finger vein acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202486801U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106960194A (en) * | 2017-03-24 | 2017-07-18 | 徐晨 | A kind of vein identification device |
| 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 |
-
2012
- 2012-02-13 CN CN2012200457530U patent/CN202486801U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106960194A (en) * | 2017-03-24 | 2017-07-18 | 徐晨 | A kind of vein identification device |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102609694B (en) | Device for collecting fingerprints and veins | |
| CN102609691A (en) | Finger vein collecting device | |
| Senthilkumar et al. | Embedded image capturing system using raspberry pi system | |
| CN101414387B (en) | Embedded human face recognition gate prohibition attendance-recording machine | |
| CN105678233B (en) | Fingerprint and finger vein based composite identification method, device and system | |
| CN106952252B (en) | Skin imaging system based on three spectrums | |
| KR20060047255A (en) | Biometric data card and authentication method | |
| US10885297B2 (en) | Non-contact capture device for capturing biometric data | |
| CN103116741A (en) | Capture and identification system for blending images of palm veins and palm prints | |
| CN203366348U (en) | Face recognition system and entrance guard system | |
| CN103336950A (en) | Human face identification method and system | |
| CN107220631A (en) | Vena metacarpea harvester and palm vein identification system | |
| CN202486801U (en) | Finger vein acquisition device | |
| CN103559483A (en) | Identity recognition device and method | |
| CN201084200Y (en) | An embedded face-identification entrance guard attendance-checking machine | |
| CN203982399U (en) | Identification apparatus | |
| CN203444497U (en) | Finger vein and fingerprint acquisition integrated apparatus | |
| US20180046840A1 (en) | A non-contact capture device | |
| CN203192001U (en) | Finger vein collecting device | |
| WO2013067661A1 (en) | Double-finger, single-finger and rolling fingerprints acquisition, registration and identification device | |
| CN202887212U (en) | Palm vein acquisition device | |
| CN202512590U (en) | Fingerprint and vein collecting device | |
| CN204272303U (en) | A kind of secret protection supervisory control system | |
| CN201628973U (en) | Iris image acquisition device with iris identification trigger shortcut key | |
| CN104715182A (en) | Mobile terminal with digital vein recognition device and digital vein recognition method |
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 |
Granted publication date: 20121010 Termination date: 20180213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |