CN202257711U - Automobile keyless access control system based on iris verification mode - Google Patents
Automobile keyless access control system based on iris verification mode Download PDFInfo
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Abstract
The utility model is suitable for the field of access control systems, provides an automobile keyless access control system based on an iris verification mode, and comprises a light source module, an iris image acquisition module, an iris identification module, a digital to analog converter, an access control circuit and an access control lock. By aid of illumination of a light source emitted by the light source module, the iris image acquisition module acquires an iris image and inputs the iris image passing the image quality evaluation to the iris identification module. After a series of preprocessing of position, normalization, illumination estimation, image enhancement and the like, characteristics of the iris image are extracted and coded and then compared with iris characteristics in a database, matching results are output, the matching or verification results are converted through the digital to analog converter, a control signal is output, and the access control lock is controlled by the access control circuit. Therefore, the automobile keyless access control system based on the iris verification mode has simple design and structure, and improves safety, reliability, intellectualization and manageability.
Description
Technical field
The utility model belongs to the gate control system field, relates in particular to a kind of automobile based on the iris verification mode and exempts from the key gate control system.
Background technology
The sustainable development of auto electronics industry makes vehicle safety and intelligent raising seem particularly important; The safeguard measure of traditional mechanical key, ID+password and smart card etc. exists loses, forgets, duplicates and stolen hidden danger; Traditional in addition coding and decoding chip encoding amount is repeated code very easily less; And short being prone to of Password Length all can not be satisfied the security needs of auto industry by scanning and decoding.Therefore, more intelligent, reliable and efficient modern gate control system is designed to one of theme of automobile production manufacturer primary study, and becomes the general option of new model.
Modern gate control system has fully utilized sensing technology, digital information processing, computer technology, multimedia technology and network technology, to realize collection, transmission and the processing of gate control system information.Lose, forget, duplicate and stolen hidden danger to traditional mechanical lock, ID+password and smart card existence, the biological identification technology of recent development is that the deficiency of said method provides a good solution.The living things feature recognition gate control system is with the gate control system of human body biological characteristics as identification condition; Mainly comprise fingerprint, palmmprint, voice, recognition of face, iris recognition etc.; Compare with traditional identity identifying technology, living things feature recognition is not only the identification to password or certain article, but to the human body self Feature Recognition; Because the identical probability of these human body biological characteristics only has billions of/one; Therefore, biological characteristic have can't be counterfeit with use, be not afraid of loss, need not carry, can not forget, characteristics such as personal feature uniqueness, uniqueness are arranged; Thereby have higher reliability, security, intellectuality and ease of manageability, be applicable to the safeguard protection in height confidentiality place.
In numerous human body biological characteristics recognition technologies; Iris recognition is the new a kind of biological identification technology that the rises nineties in 20th century; As important identity diagnostic characteristics, iris has advantages such as uniqueness, stability, collection property, non-infringement property, and relies on its special labyrinth and abundant textural characteristics; Compare with other biological characteristic; Iris has unique lifelong numerous advantages such as unchangeability, difficult alterability and unforgeable of stablizing, thereby makes that utilizing iris to carry out identity differentiates to have higher accuracy and reliability, thereby is considered to the biological identification technology that 21 century has development prospect most; Become the hot research problem of this subject, have broad application prospects and good economic benefit.
The utility model content
The purpose of the utility model is to provide a kind of automobile based on the iris verification mode to exempt from the key gate control system; The safeguard measure that is intended to solve traditional mechanical key, ID+password and smart card etc. exists loses, forgets, duplicates and stolen hidden danger; Tradition coding and decoding chip encoding amount is repeated code very easily less; And short being prone to of Password Length can not have been satisfied the problem of the security needs of auto industry by scanning and decoding.
The utility model is achieved in that a kind of automobile based on the iris verification mode exempts from the key gate control system, and this system comprises:
Be used for the iris that discriminates one's identification according to self textural characteristics;
Be used to gather the image of said iris, the iris image acquiring module that said image is exported;
Be connected with said iris image acquiring module; Be used to receive the image of said iris; The image of said iris is carried out pre-service, feature extraction, coding, matees with iris feature in the database; Draw matching result, and the iris recognition module of the said matching result corresponding electric signal of output representative;
Being connected with said iris recognition module, being used to receive the electric signal of said iris recognition module output, is simulating signal with said electrical signal conversion, and the digital to analog converter that said simulating signal is exported;
Be connected with said digital to analog converter, be used to receive the simulating signal of said digital to analog converter output, and export gate inhibition's control circuit of control signal corresponding according to said simulating signal;
Be connected with said gate inhibition's control circuit, be used to receive the control signal of said gate inhibition's control circuit output, and make the gate inhibition's lock that opens or closes the car door action according to said control signal.
Further, said system further comprises:
Be used for transmitting illuminant and illuminate iris, be convenient to the light source module that said iris image acquiring module is gathered iris image.
Further, said iris image acquiring module further comprises:
Be used to gather the iris image acquiring unit of said iris image;
Be used to check the quality of said iris image acquiring unit institute images acquired, when picture quality is undesirable, the image quality measure unit of output focusing control signal;
Be used to receive the focusing control signal of said image quality measure unit output, the automatic focusing unit of being focused in said iris image acquiring unit according to said focusing control signal.
Further, said iris recognition module further comprises:
Be used for the iris image display unit that the image to the collection of said iris image acquiring module shows;
Be used for iris image is carried out feature extraction, coding, and mate, the iris information processing unit of output matching result with iris feature in the database;
Be used to realize the man-machine crosspoint of alternating interface between man and computer message exchange;
Be used to manage the PMU of said iris recognition module supply of electrical energy.
Further, said iris image display unit further comprises:
Be used for decoding video signal to receiving, and the Video Decoder that decoded vision signal is exported;
Be used for encoding video signal to receiving, and the video encoder that the vision signal behind the coding is exported;
Be used to receive the vision signal behind the coding of said video encoder output, and the video display that shows.
Further, said man-machine crosspoint further comprises:
Be used to the serial communication subelement that the information transmission channels is provided alternately of people's machine information;
Be used for the Man Machine Interface that the people imports control signal said iris recognition module.
The utility model provides a kind of automobile based on the iris verification mode to exempt from the key gate control system, and it is locked by light source module, iris image acquiring module, iris recognition module, digital to analog converter, gate inhibition's control circuit and gate inhibition and forms, and sends at light source module under the irradiation of light source; The iris image acquiring module is gathered the image of iris; To be input to through the iris image of image quality measure in the iris recognition module, after series of preprocessing such as location, normalization, illumination estimation and figure image intensifying, the characteristic of extraction iris image is also encoded; Again with database in iris feature mate; The output matching result, coupling or checking result change through digital to analog converter, the output control signal; And gate inhibition lock is controlled through gate inhibition's control circuit; Thereby realized exempting from key gate control system design based on the automobile of iris authentication, simple in structure, improved security, reliability, intellectuality and the ease of manageability of automotive door access control system.
Description of drawings
Fig. 1 is the structured flowchart that the automobile based on the iris verification mode that the utility model embodiment provides is exempted from the key gate control system;
Fig. 2 is the structured flowchart of iris image acquiring module among Fig. 1;
Fig. 3 is the structured flowchart of iris recognition module among Fig. 1.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The automobile based on the iris verification mode that Fig. 1 shows the utility model embodiment to be provided is exempted from the structure of key gate control system.For the ease of explanation, only show the part relevant with the utility model embodiment.
This system comprises:
Be used for the iris 11 that discriminates one's identification according to self textural characteristics;
Be used to gather the image of iris 11, the iris image acquiring module 12 that image is exported;
Be connected with iris image acquiring module 12; Be used to receive the image of iris 11; Image to iris 11 carries out pre-service, feature extraction, coding, matees with iris 11 characteristics in the database; Draw matching result, and the iris recognition module 13 of the said matching result corresponding electric signal of output representative;
Being connected with iris recognition module 13, being used to receive the electric signal of iris recognition module 13 outputs, is simulating signal with electrical signal conversion, and the digital to analog converter 14 that simulating signal is exported;
Be connected with digital to analog converter 14, be used to receive the simulating signal of digital to analog converter 14 outputs, and export gate inhibition's control circuit 15 of control signal corresponding according to simulating signal;
Be connected with gate inhibition's control circuit 15, be used to receive the control signal of gate inhibition's control circuit 15 outputs, and make the gate inhibition who opens or closes the car door action according to control signal and lock 16.
In the utility model embodiment, this system further comprises:
Be used for transmitting illuminant and illuminate iris 11, be convenient to the light source module that iris image acquiring module 12 is gathered iris 11 images.
As shown in Figure 2, in the utility model embodiment, iris image acquiring module 12 further comprises:
Be used to gather the iris image acquiring unit 121 of iris 11 images;
Be used to check the quality of 121 images acquired in iris image acquiring unit, when picture quality is undesirable, the image quality measure unit 122 of output focusing control signal;
Be used to receive the focusing control signal of image quality measure unit 122 outputs, the automatic focusing unit 123 of being focused in iris image acquiring unit 121 according to the focusing control signal.
As shown in Figure 3, in the utility model embodiment, iris recognition module 13 further comprises:
Be used for iris image display unit 131 that the image that iris image acquiring module 12 is gathered is shown;
Be used for iris 11 images are carried out feature extraction, coding, and mate, the iris information processing unit 132 of output matching result with iris 11 characteristics in the database;
Be used to realize the man-machine crosspoint 133 of alternating interface between man and computer message exchange;
Be used to manage the PMU 134 of said iris recognition module 13 supply of electrical energy.
In the utility model embodiment, iris image display unit 131 further comprises:
Be used for decoding video signal to receiving, and the Video Decoder 1311 that decoded vision signal is exported;
Be used for encoding video signal to receiving, and the video encoder 1312 that the vision signal behind the coding is exported;
Be used for the vision signal behind the coding of receiver, video scrambler 1312 output, and the video display 1313 that shows.
In the utility model embodiment, man-machine crosspoint 133 further comprises:
Be used to the serial communication subelement 1331 that the information transmission channels is provided alternately of people's machine information;
Be used for the Man Machine Interface 1332 that the people imports control signal said iris recognition module 13.
Further describe below in conjunction with accompanying drawing and specific embodiment application principle the utility model.
The automobile that the utility model embodiment provides based on iris 11 identification exempt from the key gate control system mainly by light source module, iris image acquiring module 12, adopt and lock several parts such as 16 based on the Embedded iris recognition module of DSP (DM642) 13, digital to analog converter 14, gate inhibition's control circuit 15 and gate inhibition and form; The total system structural drawing is as shown in Figure 1; Wherein embedded iris recognition module 13 designs are cores of whole gate inhibition system, and its technical scheme is:
Under the environment light source irradiation outside, vision signal is gathered and converted to iris 11 by cmos image sensor;
To be input to through iris 11 images of image quality measure based on the Embedded iris recognition module 13 of DM642; After series of preprocessing such as location, normalization, illumination estimation and figure image intensifying; The characteristic of extraction iris 11 images is also encoded; Again with database in iris 11 characteristics mate, output matching result;
Coupling or checking result be through digital to analog converter 14 conversion, output control signal, and lock 16 through 15 couples of gate inhibitions of gate inhibition's control circuit and control, thereby realize automobile exempt from the key unlocking function.
External environment light source selection aspect in order to obtain abundant and iris 11 images clearly of grain details, is gathered lighting source and is adopted near the near-infrared LED of peak wavelength 850nm, and with LED around the camera lens ring shooting, thereby realize evenly illumination; Iris image acquiring module 12 adopts cmos image sensor OV7120 chip; And have an automatic focusing module; And guide the focus adjusting mechanism control circuit to drive focus adjusting mechanism through the image quality measure evaluation and realize automatic focusing, thereby obtain high-quality iris 11 images.
In the utility model embodiment; The dsp chip that iris recognition module 13 adopts is the TMS320DM642 of TI company; And designing suitable peripheral circuit, this module mainly is made up of five important module: iris image display unit 131, iris information processing unit 132, man-machine interaction unit, data communication units and PMU 134.
The access control system aspect, through coupling or checking result are carried out digital to analog converter 14 conversions, the output control signal is locked 16 through 15 couples of gate inhibitions of gate inhibition's control circuit and is opened or closed.
Fig. 1 is for exempting from key gate control system structural representation based on the automobile of iris 11 identifications; Mainly comprise light source module, iris image acquiring module 12, lock 16 based on the Embedded iris recognition module of DSP (DM642) 13, gate inhibition's control circuit 15 and gate inhibition; Wherein iris recognition module 13 is cores of whole gate inhibition system; Its overall technological scheme is: environment light source irradiation outside down; Iris 11 is gathered and is input to based in the Embedded iris recognition module 13 of DM642 by cmos image sensor, after series of preprocessing such as location, normalization, illumination estimation and figure image intensifying, carries out iris 11 image characteristics extractions and coding; And mate the output matching result with iris 11 characteristics in the database; Coupling or checking result are through digital to analog converter 14 conversions, and the output control signal is locked 16 through 15 couples of gate inhibitions of gate inhibition's control circuit and controlled.Wherein, the embodiment of each module is following:
Gather the light source module selection aspect of illumination, adopt near the near-infrared LED of peak wavelength 850nm as light source, the iris of gathering this moment 11 is the highest with pupil contrast, and iris 11 images have abundant grain details information; In addition,, adopt 6 LED series connection, and insert current-limiting resistance and form a branch road, four branch roads are centered on the camera lens ring shooting, thereby realize evenly illumination for fear of the inhomogeneous adverse influence of bringing owing to lighting source.
Iris image acquiring module 12 can realize automatic focusing; Acquisition module adopts cmos image sensor OV7120 chip; Automatic focusing unit 123 mainly comprises: focus adjusting mechanism control circuit and focus adjusting mechanism; Iris 11 picture qualities after the automatic gauging of image focus quality appraisal procedure is gathered and guide the focus adjusting mechanism control circuit to drive focus adjusting mechanism and realize automatic focusing, thereby obtain high-quality iris 11 images.
Mainly comprise five significant element based on the Embedded iris recognition module 13 of DM642: iris image display unit 131, iris information processing unit 132, man-machine interaction unit, data communication units and PMU 134.Iris image acquiring module 12 is directly linked to each other with the VP0 mouth of DM642 by Video Decoder 1311SAA7115; Image is after the DM642 pre-service; Next step operation is carried out in order according to serial ports receives; And video display 1313 is to utilize video encoder 1312SAA7105 VP2 mouth seamless link direct and DM642 to realize, the vision signal of pal mode is provided, and shows through monitor.
In the utility model embodiment, iris recognition module 13 also comprises: SDRAM storer, FLASH storer, USB interface;
The SDRAM storer mainly is used as the storage of data in image processing and the program operation process; Take into account simultaneously and want a large amount of iris of access 11 condition codes in the system; Select the high capacity FLASH storer necessary, be used to solidify code and preserve iris 11 condition codes after subscriber-coded; USB interface is mainly used in the expansion and the debugging of system; CPLD is used for to Flash provides high-order address signal, simultaneously the I/O mouth of expanding system; Serial communication is realized the communication of main process chip and Man Machine Interface 1332, utilizes the external special chip MAX3111 of multichannel buffered serial port of DM642 to realize standard RS232 serial port logic.
The mode of operation of iris 11 message processing modules mainly comprises two kinds of registration and the identity tests of iris 11 characteristic informations.Registration mode is that iris 11 characteristics of extracting the user are set up iris 11 image data bases, and the foundation of iris 11 property data bases is prerequisites that the identity test is achieved; The identity test pattern is whether identifying user identity is effective; The correctness of identity test has determined the precision and the work efficiency of whole gate inhibition system; Its workflow is following: start iris image acquiring module 12 and obtain individual iris 11 images; Adopt iris 11 picture qualities after the automatic gauging of image focus quality appraisal procedure is gathered, do not pass through to start automatic focusing unit 123, drive focus adjusting mechanism through the focus adjusting mechanism control circuit and realize automatic focusing and collection again if estimate; Anti-then will be input in the iris recognition module 13 through iris 11 images of image quality measure; After series of preprocessing such as location, normalization, illumination estimation and figure image intensifying, extract the characteristic of iris 11 images and also encode, again with database in iris 11 characteristics mate; Show matching result, whole workflow can realize through software programming.
The course of work of whole access control system is: the initialization procedure of equipment at first; Detect the zone to be detected whether user gets into system,, carry out iris 11 characteristic matching if get into the processes such as collection, pre-service, feature extraction and coupling that then start image automatically; If coupling is then exported the control voltage signal of 5V through data collecting card; Through delay circuit, control has " door lock " of relay opens, if coupling is not passed through; Then " door lock " do not opened, thereby realized that automobile exempts from key gate control system function.
The beneficial effect of the utility model is: at first, iris 11 biometrics identification technologies and automobile are exempted from the design of key gate control system combine, improved security, reliability, intellectuality and the ease of manageability of automotive door access control system; Secondly; To this application example of automotive door access control system; The Embedded iris recognition module 13 that is based on DM642 that adopts; Functions such as collection, storage, pre-service, feature extraction and the coding of iris 11 images, identification that this module is integrated, system have miniaturization, are prone to advantages such as portable and convenient for installation and maintenance.
The utility model embodiment provides a kind of automobile based on iris 11 verification modes to exempt from the key gate control system, and it is locked 16 by light source module, iris image acquiring module 12, iris recognition module 13, digital to analog converter 14, gate inhibition's control circuit 15 and gate inhibition and forms, and sends at light source module under the irradiation of light source; Iris image acquiring module 12 is gathered the image of iris 11; To be input in the iris recognition module 13 through iris 11 images of image quality measure, after series of preprocessing such as location, normalization, illumination estimation and figure image intensifying, the characteristic of extraction iris 11 images is also encoded; Again with database in iris 11 characteristics mate; The output matching result, coupling or checking result are through digital to analog converter 14 conversions, output control signal; And lock 16 through 15 couples of gate inhibitions of gate inhibition's control circuit and control; Thereby realized exempting from the design of key gate control system based on the automobile of iris 11 authentications, simple in structure, reliability is high.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Claims (6)
1. the automobile based on the iris verification mode is exempted from the key gate control system, it is characterized in that, this system comprises:
Be used for the iris that discriminates one's identification according to self textural characteristics;
Be used to gather the image of said iris, the iris image acquiring module that said image is exported;
Be connected with said iris image acquiring module; Be used to receive the image of said iris; The image of said iris is carried out pre-service, feature extraction, coding, matees with iris feature in the database; Draw matching result, and the iris recognition module of the said matching result corresponding electric signal of output representative;
Being connected with said iris recognition module, being used to receive the electric signal of said iris recognition module output, is simulating signal with said electrical signal conversion, and the digital to analog converter that said simulating signal is exported;
Be connected with said digital to analog converter, be used to receive the simulating signal of said digital to analog converter output, and export gate inhibition's control circuit of control signal corresponding according to said simulating signal;
Be connected with said gate inhibition's control circuit, be used to receive the control signal of said gate inhibition's control circuit output, and make the gate inhibition's lock that opens or closes the car door action according to said control signal.
2. the system of claim 1 is characterized in that, said system further comprises:
Be used for transmitting illuminant and illuminate iris, be convenient to the light source module that said iris image acquiring module is gathered iris image.
3. the system of claim 1 is characterized in that, said iris image acquiring module further comprises:
Be used to gather the iris image acquiring unit of said iris image;
Be used to check the quality of said iris image acquiring unit institute images acquired, when picture quality is undesirable, the image quality measure unit of output focusing control signal;
Be used to receive the focusing control signal of said image quality measure unit output, the automatic focusing unit of being focused in said iris image acquiring unit according to said focusing control signal.
4. the system of claim 1 is characterized in that, said iris recognition module further comprises:
Be used for the iris image display unit that the image to the collection of said iris image acquiring module shows;
Be used for iris image is carried out feature extraction, coding, and mate, the iris information processing unit of output matching result with iris feature in the database;
Be used to realize the man-machine crosspoint of alternating interface between man and computer message exchange;
Be used to manage the PMU of said iris recognition module supply of electrical energy.
5. like claim 1 or 4 described systems, it is characterized in that said iris image display unit further comprises:
Be used for decoding video signal to receiving, and the Video Decoder that decoded vision signal is exported;
Be used for encoding video signal to receiving, and the video encoder that the vision signal behind the coding is exported;
Be used to receive the vision signal behind the coding of said video encoder output, and the video display that shows.
6. like claim 1 or 4 described systems, it is characterized in that said man-machine crosspoint further comprises:
Be used to the serial communication subelement that the information transmission channels is provided alternately of people's machine information;
Be used for the Man Machine Interface that the people imports control signal said iris recognition module.
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| CN201120406946XU CN202257711U (en) | 2011-10-24 | 2011-10-24 | Automobile keyless access control system based on iris verification mode |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163149A (en) * | 2013-05-15 | 2014-11-26 | 观致汽车有限公司 | Method and system for controlling opening of trunk lid of vehicle |
| CN104802753A (en) * | 2015-03-25 | 2015-07-29 | 上海扬梓投资管理有限公司 | Unlocking and security preventing method and system for car |
| CN105488462A (en) * | 2015-11-25 | 2016-04-13 | 努比亚技术有限公司 | Eye positioning identification device and method |
| CN105575008A (en) * | 2015-12-15 | 2016-05-11 | 宁波保众应急科技有限公司 | Intelligent storage cabinet |
| CN106295578A (en) * | 2016-08-12 | 2017-01-04 | 合肥虹视信息工程有限公司 | A kind of iris identification device of high integration |
| CN106326883A (en) * | 2016-09-30 | 2017-01-11 | 桂林师范高等专科学校 | Iris recognition processing module |
| CN106373221A (en) * | 2016-08-22 | 2017-02-01 | 冯玉国 | Iris identification-based entrance guard system and realization method thereof |
| CN110853171A (en) * | 2019-10-28 | 2020-02-28 | 武汉虹识技术有限公司 | Iris recognition device and access control system |
| CN112216008A (en) * | 2020-11-18 | 2021-01-12 | 郑州科技学院 | Intelligent management system for identity authentication service |
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2011
- 2011-10-24 CN CN201120406946XU patent/CN202257711U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163149A (en) * | 2013-05-15 | 2014-11-26 | 观致汽车有限公司 | Method and system for controlling opening of trunk lid of vehicle |
| CN104163149B (en) * | 2013-05-15 | 2016-08-10 | 观致汽车有限公司 | A kind of vehicle trunk lid method for controlling opening and closing and system |
| CN104802753A (en) * | 2015-03-25 | 2015-07-29 | 上海扬梓投资管理有限公司 | Unlocking and security preventing method and system for car |
| CN105488462A (en) * | 2015-11-25 | 2016-04-13 | 努比亚技术有限公司 | Eye positioning identification device and method |
| CN105575008A (en) * | 2015-12-15 | 2016-05-11 | 宁波保众应急科技有限公司 | Intelligent storage cabinet |
| CN106295578A (en) * | 2016-08-12 | 2017-01-04 | 合肥虹视信息工程有限公司 | A kind of iris identification device of high integration |
| CN106373221A (en) * | 2016-08-22 | 2017-02-01 | 冯玉国 | Iris identification-based entrance guard system and realization method thereof |
| CN106326883A (en) * | 2016-09-30 | 2017-01-11 | 桂林师范高等专科学校 | Iris recognition processing module |
| CN110853171A (en) * | 2019-10-28 | 2020-02-28 | 武汉虹识技术有限公司 | Iris recognition device and access control system |
| CN112216008A (en) * | 2020-11-18 | 2021-01-12 | 郑州科技学院 | Intelligent management system for identity authentication service |
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Granted publication date: 20120530 Termination date: 20121024 |