CN203689592U - Access control system based on finger vein recognition - Google Patents
Access control system based on finger vein recognition Download PDFInfo
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- CN203689592U CN203689592U CN201320769477.7U CN201320769477U CN203689592U CN 203689592 U CN203689592 U CN 203689592U CN 201320769477 U CN201320769477 U CN 201320769477U CN 203689592 U CN203689592 U CN 203689592U
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- finger vein
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- electromagnetic lock
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Abstract
The utility model discloses an access control system based on finger vein recognition, and relates to the field of intelligent buildings. The access control system comprises a DSP (Digital Signal Processor), a finger vein image collection recognition device, a FLASH memory, a SDRAM (Synchronous Dynamic Random Access Memory), a LCD(liquid crystal display ) display module, a relay and an electromagnetic lock, wherein the DSP is connected with the relay, a keyboard module, the LCD display module, the FLASH memory and the SDRAM; the DSP is connected with the finger vein image collection recognition device through a communication optical fiber cable for communication, and the electromagnetic lock is connected with the relay. The access control system provided by the utility model has the advantages that a community access control system is opened only through a correct finger vein image, the security of the community access control system is increased, a user does not need carry a magcard or remember the password, and the use is convenient.
Description
Technical field
The utility model relates to intelligent building field, is specifically related to a kind of gate control system based on finger vena identification.
Background technology
Along with improving constantly of people's living standard, the value of daily living article also constantly promotes, and people also pay attention to all the more for anti-theft measure, and along with the variation of means of crime, traditional mechanical lock cannot have been guaranteed security.A lot of residential quarters are all equipped with the antitheft door of Magnetic Control downstairs, and a lot of antitheft doors is by input password, or magnetic card opens, thereby guarantee antitheft security.But in life, password easily leaks, and magnetic card also can be lost, this has increased uncertain factor all to the security of antitheft door, has brought potential safety hazard to our life.
Conventional identity recognizing technology has fingerprint recognition, recognition of face, the identification of palm shape and signature identification at present, but all has certain limitation, as described below:
1, fingerprint recognition: everyone (including fingerprint) skin lines is different on pattern, breakpoint and point of crossing, is unique feature and constant throughout one's life.Rely on this uniqueness and stability features, just a people can be mapped with his fingerprint.Compare by relatively his fingerprint and the fingerprint of preservation in advance, carry out authentication, Here it is fingerprint identification technology.Its shortcoming is: easily damage, easily forgery, contact collection.
2, recognition of face: recognition of face is an important directions of biological characteristic authentication technique, has obtained research widely now.Its shortcoming: discrimination is low; Affected greatly by light, attitude and expression shape change.Set up a face identification system and remain a very difficult problem.
3, palm type identification: palm type recognition technology is that U.S. doctor CARRETT is pioneering after biometrics identification technology test for many years.The three-dimensional shape of human palm, as fingerprint, is that everyone is mutually different, therefore can be used as the recognition feature of identity validation.Palm feature refers to the size and shape of hand, and it comprises length, width, the thickness of hand and the surface characteristics of palm and all the other four fingers except thumb.Palm shape recognition system is to obtain the 3-D view of palm by infrared ray and CMOS scanning, measure the data of more than 90 palm shape, and then analysis draws the unique feature of palm.Similarity is poor; Harvester volume is large; Ease for use is poor; Must contact use.
4, signature identification: signature has been used the centuries as the means of authentication, and we all very familiar in the form list of bank signature as the mark of our identity.Such process by signature digitizing, the action of measurement image itself and whole signature---different speed, order and pressure between each letter and letter, signature identification is the same with voice recognition, is that a kind of behavior determination is learned.Its shortcoming: signature character is unstable; Increase other safe ancillary methods; Harvester complex structure, costliness; Be difficult to its compact in size.
Utility model content
For above-mentioned prior art, the purpose of this utility model is to provide a kind of gate control system based on finger vena identification, and its identification is more accurate, and safe class is high.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
Based on a gate control system for finger vena identification, it is characterized in that, comprise dsp processor, finger vein image acquisition recognition device, FLASH flash memory, SDRAM storer, LCD display module, relay, electromagnetic lock;
Dsp processor: as the control core of whole system;
Finger vein image acquisition recognition device: gather finger vein grain;
FLASH flash memory: for storing start-up routine, start-up parameter, operating system, file system and hardware drive program thereof and application code;
SDRAM storer: storage running operating system program, file system and finger venous image database;
LCD display module: show the fingerprint image that collects and the result after comparing;
Relay: receive the control signal of dsp processor, control the switch of electromagnetic lock;
Electromagnetic lock: for switch gate;
Described finger vein image acquisition recognition device, comprises infrared light supply assembly, finger placing machine, vein image acquisition device, control system, power supply, shell and backboard; Its dorsulum is fixedly connected with the monnolithic case of constituent apparatus and the mounting base of internal components with shell front and back; Finger placing machine is provided with more than one finger locating slot, and one of them finger locating slot is that finger vena gathers groove, and finger vena gathers groove vertical direction upper and lower surface and has corresponding rectangular channel, and trigger switch is installed by the finger tip portion that finger vena gathers groove;
Described dsp processor is connected with relay, Keysheet module, LCD display module, FLASH flash memory, SDRAM storer, and dsp processor is connected communication through cable data line with finger vein image acquisition recognition device, and described electromagnetic lock is connected with relay.
Described LCD display module adopts Chinese Graphic control chip ST7920.
The new principle of work of this practicality is: the finger venous image collecting is given dsp processor by finger vein image acquisition recognition device, single-chip microcomputer is according to initialization setting and carry out after fingerprint contrast, on the one hand according to result by the control of relay being controlled to the switch of electromagnetic lock.While carrying out finger vein image acquisition, the finger vena that collected people's finger stretches on finger placing machine gathers in groove, finger touches trigger switch, now circuit is connected, control system is connected infrared light supply, make infrared light supply see through the collection position of convex lens and frosted glass irradiation finger, the infrared camera that control system is controlled vein image acquisition device simultaneously starts the collection position of finger to take pictures, in picture after taking pictures and control system, the data of storage are compared, if the match is successful, control system control signal pilot lamp sends green instruction, be presented at by light guide plate on the light hole of shell, if mate unsuccessful, send red alarm.
Compared with prior art, the utlity model has following beneficial effect:
One, the utility model only has by correct finger finger venous image and could open access control system of residential community, has increased the security of access control system of residential community, and for user, without carrying magnetic card or remembeing password, easy to use.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the cut-open view of finger vein image acquisition recognition device;
1 is that shell, 2 is that infrared light supply assembly, 3, finger placing machine, 4 are that vein image acquisition device, 5 is that backboard, 6 is trigger switch.
Embodiment
Below in conjunction with the drawings and the specific embodiments, the utility model will be further described.
Based on a gate control system for finger vena identification, it is characterized in that, comprise dsp processor, finger vein image acquisition recognition device, FLASH flash memory, SDRAM storer, LCD display module, relay, electromagnetic lock;
Dsp processor: as the control core of whole system;
Finger vein image acquisition recognition device: gather finger vein grain;
FLASH flash memory: for storing start-up routine, start-up parameter, operating system, file system and hardware drive program thereof and application code;
SDRAM storer: storage running operating system program, file system and finger venous image database;
LCD display module: show the fingerprint image that collects and the result after comparing;
Relay: receive the control signal of dsp processor, control the switch of electromagnetic lock;
Electromagnetic lock: for switch gate;
Described finger vein image acquisition recognition device, comprises infrared light supply assembly, finger placing machine, vein image acquisition device, control system, power supply, shell and backboard; Its dorsulum is fixedly connected with the monnolithic case of constituent apparatus and the mounting base of internal components with shell front and back; Finger placing machine is provided with more than one finger locating slot, and one of them finger locating slot is that finger vena gathers groove, and finger vena gathers groove vertical direction upper and lower surface and has corresponding rectangular channel, and trigger switch is installed by the finger tip portion that finger vena gathers groove; Infrared light supply assembly comprises mount pad, infrared light supply, convex lens and frosted glass, and convex lens and frosted glass and mount pad are fixed together, and infrared light supply is arranged on mount pad and is positioned at above convex lens; Vein image acquisition device comprises upper cover plate, optical filter, sleeve, pedestal, nut and infrared camera, optical filter is arranged in the mounting groove of pedestal upper end together with upper cover plate after being arranged in the groove bottom upper cover plate, play the function of sealing and fixing optical filter, the base plate of infrared camera is fixed by screws on sleeve, the cylindrical of sleeve and pedestal endoporus are by thread connection, and barrel forward end is carried out fine setting and the locking of distance by nut; Its integrated connection closes: finger placing machine is installed middle part in the enclosure; The finger vena that infrared light supply assembly entirety is fixedly mounted on finger placing machine gathers in the rectangular channel of groove top, infrared light supply assembly top is provided with signal lamp, and signal lamp top has light guide plate the light source of signal lamp to be directed on the light hole of shell; The finger vena that vein image acquisition device is fixedly mounted on finger placing machine gathers in the rectangular channel of groove below, control system and trigger switch, power supply, infrared light supply assembly, infrared camera and signal lamp are connected to each other, and the focal length of infrared camera is realized by the distance between regulating sleeve and pedestal; Described dsp processor is connected with relay, Keysheet module, LCD display module, FLASH flash memory, SDRAM storer, and dsp processor is connected communication through communications optical cable with finger vein image acquisition recognition device, and described electromagnetic lock is connected with relay.Described LCD display module adopts Chinese Graphic control chip ST7920.
The new principle of work of this practicality is: the finger venous image collecting is given dsp processor by finger vein image acquisition recognition device, single-chip microcomputer is according to initialization setting and carry out after fingerprint contrast, on the one hand according to result by the control of relay being controlled to the switch of electromagnetic lock.While carrying out finger vein image acquisition, the finger vena that collected people's finger stretches on finger placing machine gathers in groove, finger touches trigger switch, now circuit is connected, control system is connected infrared light supply, make infrared light supply see through the collection position of convex lens and frosted glass irradiation finger, the infrared camera that control system is controlled vein image acquisition device simultaneously starts the collection position of finger to take pictures, in picture after taking pictures and control system, the data of storage are compared, if the match is successful, control system control signal pilot lamp sends green instruction, be presented at by light guide plate on the light hole of shell, if mate unsuccessful, send red alarm.
The utlity model has following features:
1, vivo identification: the principle of vein identification technology is to carry out vein image acquisition according to the blood red speciality that have absorption infrared ray in blood.While only having finger live body, just can obtain vein pattern, the finger of non-living body can not get vein image feature and None-identified, cannot reach the object of fraud.
2, internal feature: while carrying out authentication with finger vena, what obtain is the vein image feature of finger interior, instead of the characteristics of image of finger surface.Therefore there is not any damage due to finger surface, wearing and tearing, the cognitive disorders that be dried or too wet etc. brought.Can overcome these shortcomings of fingerprint completely.
3, contactless: carry out authentication with finger vena, while obtaining finger venous image, finger need not contact with equipment; Finger one is stretched gently, can complete identification; Unhygienic, finger surface feature during not as the contact arrangement of fingerprint recognition may be replicated brought safety problem, and have avoided being taken as the Psychological inadaptability of examination object.
4, safe class is high: because user's finger vein features is difficult to be forged, so safe class is high, is particularly suitable for the place that safety requirements is high and uses.
Claims (2)
1. the gate control system based on finger vena identification, is characterized in that, comprises dsp processor, finger vein image acquisition recognition device, FLASH flash memory, SDRAM storer, LCD display module, relay, electromagnetic lock;
Dsp processor: as the control core of whole system;
Finger vein image acquisition recognition device: gather finger vein grain view data;
FLASH flash memory: for storing start-up routine, start-up parameter, operating system, file system and hardware drive program thereof and application code;
SDRAM storer: storage running operating system program, file system and finger venous image database;
LCD display module: show the fingerprint image that collects and the result after comparing;
Relay: receive the control signal of dsp processor, control the switch of electromagnetic lock;
Electromagnetic lock: for switch gate;
Described dsp processor is connected with relay, Keysheet module, LCD display module, FLASH flash memory, SDRAM storer, and dsp processor is connected communication through cable data line with finger vein image acquisition recognition device, and described electromagnetic lock is connected with relay.
2. the according to claim a kind of gate control system based on finger vena identification, is characterized in that, described LCD display module adopts Chinese Graphic control chip ST7920.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320769477.7U CN203689592U (en) | 2013-11-30 | 2013-11-30 | Access control system based on finger vein recognition |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320769477.7U CN203689592U (en) | 2013-11-30 | 2013-11-30 | Access control system based on finger vein recognition |
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| CN203689592U true CN203689592U (en) | 2014-07-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103679878A (en) * | 2013-11-30 | 2014-03-26 | 成都科泰地理信息技术有限公司 | Access control system based on finger vein recognition |
| CN106204841A (en) * | 2016-07-07 | 2016-12-07 | 北京英贝思科技有限公司 | A kind of intelligent access control system and control method thereof |
| CN106940796A (en) * | 2017-04-28 | 2017-07-11 | 洛阳师范学院 | A kind of application method of the finger venous image identifying system of electronic lock unlocking certification |
-
2013
- 2013-11-30 CN CN201320769477.7U patent/CN203689592U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103679878A (en) * | 2013-11-30 | 2014-03-26 | 成都科泰地理信息技术有限公司 | Access control system based on finger vein recognition |
| CN106204841A (en) * | 2016-07-07 | 2016-12-07 | 北京英贝思科技有限公司 | A kind of intelligent access control system and control method thereof |
| CN106940796A (en) * | 2017-04-28 | 2017-07-11 | 洛阳师范学院 | A kind of application method of the finger venous image identifying system of electronic lock unlocking certification |
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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 |
Granted publication date: 20140702 Termination date: 20151130 |
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| EXPY | Termination of patent right or utility model |