CN105608770B - A kind of electronic lock and its method for unlocking - Google Patents
A kind of electronic lock and its method for unlocking Download PDFInfo
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- CN105608770B CN105608770B CN201510966484.XA CN201510966484A CN105608770B CN 105608770 B CN105608770 B CN 105608770B CN 201510966484 A CN201510966484 A CN 201510966484A CN 105608770 B CN105608770 B CN 105608770B
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00563—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/14—Vascular patterns
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- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Collating Specific Patterns (AREA)
Abstract
The invention discloses a kind of electronic lock and its method for unlocking, comprise the following steps：S1. original image acquisition step：S2. original image pre-treatment step；S3. fingerprint image verification step；S4. vein image verification step；S5. unlock step.To realize that electronic lock is unlocked in the present invention, need successively to carry out the multiple-authentication such as fingerprint image checking and vein image checking, only when fingerprint image is verified just progress vein image checking, also needing to carry out the finger live body checking based on three-dimensional feature data after image vein is verified could unlock, and improve the security performance of electronic lock；Vein image checking overcomes the shortcoming that fingerprint authentication is easily imitated, and further increases the security of electronic lock.
Description
Technical field
The present invention relates to technical field of biometric identification, more particularly to a kind of electronic lock and its method for unlocking.
Background technology
Biometrics have been widely recognized as now, and by the certification of Recognizing NCB, and extensively
It is general to be applied to all trades and professions.Fingerprint has lifelong consistency, uniqueness and convenience due to it, almost turns into biological characteristic
The synonym of identification.Fingerprint refers to the convex uneven streakline produced of the positive surface skin fovea superior of the finger tips of people.The regular row of streakline
Row form different line types.Starting point, terminal, binding site and the bifurcation of streakline are referred to as the details of fingerprint.But it is existing
Fingerprint recognition there is following defect：（1）The fingerprint characteristic of some people or some colonies is few, it is difficult to be imaged；（2）Use each time
The finger mark of user can be all left during fingerprint on collection head, and there is the possibility for being used to replicate fingerprint in these finger marks
Fingerprint sleeve and fingerprint film in property, such as certain electric appliances store；（3）Fingerprint is the important personal information of user, some application scenarios
User worries information leakage, buries major safety risks.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of electronic lock and its method for unlocking, it is necessary to elder generation
The multiple-authentication such as fingerprint image checking and vein image checking is carried out afterwards, only just enters row vein figure when fingerprint image is verified
As checking, it could be unlocked after image vein is verified, not only increase the security performance of electronic lock, and it is convenient and swift.
The purpose of the present invention is achieved through the following technical solutions：A kind of method for unlocking of electronic lock, including fingerprint
Venous collection verifies device and electronics lock body, and fingerprint venous collection checking device includes shell, signal processing part, set outside
Cavity inside shell, the image acquisition device being arranged between cavity and shell and the motor for driving image acquisition device to rotate,
Signal processing part includes microprocessor and digital signal processor, and image acquisition device includes supporting part, outer casing inner wall and supporting part
Substrate layer is equipped with inwall, the first side of supporting part inwall is provided with imaging sensor and the first light source, and the first light source inclines
The surrounding of imaging sensor is tiltedly arranged on, the second side of supporting part inwall is provided with secondary light source, the first of supporting part inwall
Side and second side are relative, imaging sensor, the first light source, secondary light source, motor and digital signal processor with micro- place
Device connection is managed, microprocessor is connected with electronics lock body.
The installation seating face of described image sensor, the first light source and secondary light source is provided with substrate layer.
The substrate is made up of dulling material or black abrasive material.
The supporting part is in four trouble claw type or jacket casing type.
The shell is provided with cavity door.
A kind of method for unlocking of electronic lock, comprises the following steps：
S1. original image acquisition step：Image acquisition device enters rotation around finger, and finger is gathered in rotary course
Primitive character image, until complete 360 degree of finger primitive character IMAQ, the primitive character image include fingerprint image with
Vein image, vein image includes epidermis vein image and perspective vein image, and the storage of primitive character image is added to first
The extra buffer of close storage chip；
S2. original image pre-treatment step：With the digital signal processor of the first encryption storage chip binding access this
The extra buffer of one encryption storage chip, is filtered, image binaryzation and micronization processes successively to primitive character image；So
Afterwards, microprocessor to the primitive character image of the extra buffer of the first storage enciphered storage chip with registration when stay in the first encryption and deposit
The primitive character image for storing up the extra buffer of chip carries out contrast verification, when the authentication succeeds, by the first storage enciphered storage chip
The primitive character image of extra buffer dump to the encrypted data region of the first storage enciphered storage chip, until by the original of finger
Characteristic image collection is finished, while staying in the primitive character figure of the extra buffer of the first storage enciphered storage chip during more new registration
Picture；
S3. original image verification step：The primitive character image that microprocessor will be pre-processed by digital signal processor
The primitive character image that the encrypted data region of the first storage enciphered storage chip is stayed in during with registration carries out contrast verification, when being proved to be successful
When, characteristic is extracted from the primitive character image pre-processed by digital signal processor, this feature data include fingerprint
Characteristic, epidermis vein pattern number and perspective vein pattern data, then characteristic is encrypted, and by after encryption
Characteristic is stored to encryption data scratchpad area (SPA), while staying in the encryption data of the first storage enciphered storage chip during more new registration
The primitive character image in area；
S4. finger live body verification step：After original image is proved to be successful, microprocessor will be stored in encryption data and face
When memory block characteristic be fitted using 3D data fitting algorithms, obtain three-dimensional feature data to be verified；Obtain to be tested
Fingerprint central point and the veiny relative position of institute in three-dimensional feature data are demonstrate,proved, and by the relative position with registering three-dimensional feature number
Contrast verification is carried out according to the veiny relative position of middle fingerprint central point and institute, when both are consistent, is then proved to be successful, judges hand
Refer to as live body, microprocessor sends unlocking signal, while more new registration three-dimensional feature data；
S5. unlock step：Electronics lock body is unlocked according to unlocking signal.
Also include password authentification step between step S4 and step S5：After password authentification success, microprocessor will unlock
Signal is sent to electronic lock.
In step S2, when failing the authentication, microprocessor adds timestamp for the primitive character image of authentication failed, and will
The primitive character image dumps to the ephemeral data area of the second storage chip；In the range of certain time, microprocessor is detected
The quantity of the same biological primitive character image of the ephemeral data area storage of second storage chip is alarmed when exceeding threshold value
Processing；Alarmed when the storage of scratchpad area (SPA) exceedes threshold value to the quantity of original image.
In step S2, when primitive character IMAQ is not fully completed, if occurring authentication failed, microprocessor will be stored
Primitive character image complete deletion in the encrypted data region of the first storage enciphered storage chip.
In step S4,3D data fitting algorithms are 16 algorithms or 32 algorithms or 64 algorithms.
The beneficial effects of the invention are as follows：
（1）To realize that electronic lock is unlocked, it is necessary to successively carry out fingerprint image checking and vein image checking etc. in the present invention
Multiple-authentication, only when fingerprint image be verified just progress vein image checking, also needed after image vein is verified into
Finger live body checking of the row based on three-dimensional feature data could be unlocked, and improve the security performance of electronic lock；
（2）When carrying out vein image checking, verify what is be combined with perspective vein image checking using epidermis vein image
Mode, improves the security of experience image authentication；
（4）The verifying speed of the present invention is fast, is put into finger from user and authenticate to and is proved to be successful unlocking or authentication failed
Time be no more than 2s.
Brief description of the drawings
Fig. 1 is the schematic diagram that fingerprint venous collection of the present invention verifies device；
Fig. 2 is the schematic diagram of acquisition tables cutaneous vein vena cutanea image in the present invention；
Fig. 3 has an X-rayed the schematic diagram of vein image for collection in the present invention；
Fig. 4 is a kind of flow chart of the method for unlocking of electronic lock of the invention；
Fig. 5 is the schematic diagram of one embodiment of 3D data fitting algorithms in the present invention；
In figure, 1- shells, 2- supporting parts, 3- cavitys, the light sources of 4- the 4th, the light sources of 5- first, 6- imaging sensors, 7- second
Light source, the light sources of 8- the 3rd.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
It is as described below.
As shown in Figure 1, Figure 2 and Figure 3, a kind of method for unlocking of electronic lock, including fingerprint venous collection checking device and electricity
Sub- lock body, fingerprint venous collection checking device includes shell 1, signal processing part, the cavity 3 being arranged on inside shell 1, set
Image acquisition device between cavity 3 and shell 1 and the motor for driving image acquisition device to rotate, signal processing part includes micro-
Processor and digital signal processor, image acquisition device include being equipped with lining on supporting part 2, the inwall of shell 1 and the inwall of supporting part 2
Bottom, the first side of the inwall of supporting part 2 is provided with the light source 5 of imaging sensor 6 and first, and the first light source 5 is inclined at figure
As the surrounding of sensor 6, the second side of the inwall of supporting part 2 is provided with secondary light source 7, the first side of the inwall of supporting part 2 and
Second side is relative, and imaging sensor 6, the first light source 5, secondary light source 7, motor and digital signal processor are and microprocessor
Connection, microprocessor is connected with electronics lock body.
3rd side of the inwall of supporting part 2 is provided with the 4th side inside the 3rd light source 8, the supporting part 2
Provided with the 4th light source 4, the 3rd light source 8 and the 4th light source 4 are connected with microprocessor.First light source 5, secondary light source 7, the 3rd light
The light source 4 of source 8 and the 4th includes near-infrared LED lamp and white led lamps, the need for microprocessor is gathered according to imaging sensor 6
Light different near-infrared LED lamps or white led lamps.
The installation seating face of described image sensor 6, the first light source 5 and secondary light source 7 is provided with substrate layer.The substrate by
Dulling material or black abrasive material are made, and reduce influence of the substrate reflection light to IMAQ, the image that improvement is collected
Quality, is conducive to improving the accuracy of subsequent characteristics identification.
The supporting part 2 is in four trouble claw type or jacket casing type.
The shell 1 is provided with cavity door, and the open signal of cavity door is by the photo resistance of proximity test and another
In invention opal control, detect human body close to when, cavity door automatically open up.
The cavity 3 is made of clear material.
Further, in addition to disc-type slide ring, imaging sensor 6, the first light source 5, secondary light source 7, the 3rd light source 8 and
Four light sources 4 are connected by disc-type slide ring with microprocessor, and disc-type slide ring is used in the case where image acquisition device rotates at a high speed,
Ensure that image acquisition device can be promptly and accurately by the primitive character image transmitting collected to signal processing part.
The operation principle of the present apparatus is：Image acquisition device enters rotation around finger, and the original of finger is gathered in rotary course
Beginning characteristic image, the primitive character IMAQ until completing 360 degree of finger, primitive character image includes fingerprint image and quiet
Arteries and veins image, vein image includes epidermis vein image and perspective vein image, and the storage of primitive character image is encrypted to first
The extra buffer of storage chip；First encryption is accessed with the digital signal processor of the first encryption storage chip binding to store
The extra buffer of chip, is filtered, image binaryzation and micronization processes successively to primitive character image；Then, microprocessor
Device to the primitive character image of the extra buffer of the first storage enciphered storage chip with registration when stay in the first storage enciphered storage chip
The primitive character image of extra buffer carries out contrast verification, when the authentication succeeds, by the interim slow of the first storage enciphered storage chip
The primitive character image for rushing area dumps to the encrypted data region of the first storage enciphered storage chip, until by the primitive character image of finger
Collection is finished, while staying in the primitive character image of the extra buffer of the first storage enciphered storage chip during more new registration；Microprocessor
The encryption of the first storage enciphered storage chip is stayed in when device is by the primitive character image pre-processed by digital signal processor and registration
The primitive character image of data field carries out contrast verification, when the authentication succeeds, from the original pre-processed by digital signal processor
Characteristic is extracted in beginning characteristic image, this feature data include fingerprint characteristic data, epidermis vein pattern number and perspective vein
Characteristic, then characteristic is encrypted, and the characteristic after encryption is stored to encryption data scratchpad area (SPA),
The primitive character image of the encrypted data region of the first storage enciphered storage chip is stayed in during more new registration simultaneously；When original image is verified into
After work(, the characteristic that microprocessor will be stored in encryption data scratchpad area (SPA) is fitted using 3D data fitting algorithms,
Obtain three-dimensional feature data to be verified；Obtain fingerprint central point and the veiny relative position of institute in three-dimensional feature data to be verified
Put, and the relative position is subjected to contrast with fingerprint central point in registration three-dimensional feature data with a veiny relative position and test
Card, when both are consistent, is then proved to be successful, judges finger for live body；Microprocessor sends unlocking signal, while more new registration three
Dimensional feature data；Electronics lock body is unlocked according to unlocking signal.
As shown in figure 4, a kind of method for unlocking of electronic lock, comprises the following steps：
S1. original image acquisition step：Image acquisition device enters rotation around finger, and finger is gathered in rotary course
Primitive character image, until complete 360 degree of finger primitive character IMAQ, the primitive character image include fingerprint image with
Vein image, vein image includes epidermis vein image and perspective vein image, and the storage of primitive character image is added to first
The extra buffer of close storage chip.
Image acquisition device rotates to an angle around finger every time, until the primitive character image for completing 360 degree of finger is adopted
Collection, image acquisition device often rotates the characteristic image for once just gathering a finger.Use near infrared light（Wavelength 960nm~
980nm）Finger is irradiated, finger interior venous blood hemoglobin anoxic absorbs the light wave of the wavelength, in another side into shade shape
State；During acquisition tables cutaneous vein vena cutanea image, using near infrared light oblique illumination finger, the near infrared light reflected using finger obtains table
Cutaneous vein vena cutanea image；During collection perspective vein image, using near infrared light vertical irradiation finger, the near infrared light for penetrating finger is utilized
To obtain perspective vein image.Use near infrared light（Wavelength 960nm~980nm）Irradiate finger, finger interior venous blood blood
Lactoferrin anoxic, absorbs the light wave of the wavelength, in another side into shadow state；During acquisition tables cutaneous vein vena cutanea image, near-infrared is used
Light oblique illumination finger, the near infrared light reflected using finger obtains epidermis vein image；During collection perspective vein image, make
With near infrared light vertical irradiation finger, perspective vein image is obtained using the near infrared light of finger is penetrated.
S2. original image pre-treatment step：With the digital signal processor of the first encryption storage chip binding access this
The extra buffer of one encryption storage chip, is filtered, image binaryzation and refinement successively to primitive character image（Positioning is special
Levy a little, characteristic point includes end points and bifurcation）Processing；Then, extra buffer of the microprocessor to the first storage enciphered storage chip
In primitive character image with registration when stay in the first storage enciphered storage chip extra buffer primitive character image carry out pair
Than checking, when the authentication succeeds, the primitive character image of the extra buffer of the first storage enciphered storage chip is dumped to first and added
The encrypted data region of close storage chip, is finished until by the primitive character IMAQ of finger, while staying in during more new registration
The primitive character image of the extra buffer of one storage enciphered storage chip.
In step S2, when failing the authentication, microprocessor adds timestamp for the primitive character image of authentication failed, and will
The primitive character image dumps to the ephemeral data area of the second storage chip；In the range of certain time（The time range can be with
Sets itself as needed）, microprocessor detects the same biological original of the ephemeral data area storage of the second storage chip
The quantity of characteristic image carries out alert process when exceeding threshold value；When the quantity that original image is arrived in the storage of scratchpad area (SPA) exceedes threshold
Alarmed during value.The mode of the alarm includes the one or more in audible alarm or text alarm or light alarm.
In step S2, when primitive character IMAQ is not fully completed, if occurring authentication failed, microprocessor will be stored
Primitive character image complete deletion in the encrypted data region of the first storage enciphered storage chip.
S3. original image verification step：The primitive character image that microprocessor will be pre-processed by digital signal processor
The primitive character image that the encrypted data region of the first storage enciphered storage chip is stayed in during with registration carries out contrast verification, when being proved to be successful
When, characteristic is extracted from the primitive character image pre-processed by digital signal processor, this feature data include fingerprint
Characteristic, epidermis vein pattern number and perspective vein pattern data, then characteristic is encrypted, and by after encryption
Characteristic is stored to encryption data scratchpad area (SPA), while staying in the encryption data of the first storage enciphered storage chip during more new registration
The primitive character image in area.
S4. finger live body verification step：After original image is proved to be successful, microprocessor will be stored in encryption data and face
When memory block characteristic be fitted using 3D data fitting algorithms, obtain three-dimensional feature data to be verified；Obtain to be tested
Fingerprint central point and the veiny relative position of institute in three-dimensional feature data are demonstrate,proved, and by the relative position with registering three-dimensional feature number
Contrast verification is carried out according to the veiny relative position of middle fingerprint central point and institute, when both are consistent, is then proved to be successful, judges hand
Refer to as live body, microprocessor sends unlocking signal, while more new registration three-dimensional feature data.
The present invention stays in the extra buffer of the first storage enciphered storage chip in more new registrations after being proved to be successful every time
Primitive character image or the registration that the encrypted data region of the first storage enciphered storage chip is stayed in when primitive character image, registration are three-dimensional special
Data are levied, its update mode is by the number of the primitive character image for the extra buffer that the first storage enciphered storage chip is stayed in when registering
According to the primitive character image in the extra buffer replaced with by the first storage enciphered storage chip of checking, the will be stayed in during registration
The data of the primitive character image of the encrypted data region of one storage enciphered storage chip are replaced with the process data signal by checking
The primitive character image of device pretreatment is managed, registration three-dimensional feature data are replaced with to the three-dimensional feature number to be verified by checking
According to.It is possible thereby to avoid minor in growth course because fingerprint and vein profile become causes authentication failed greatly.
Also include password authentification step between step S4 and step S5：After password authentification success, microprocessor will unlock
Signal is sent to electronic lock.
In step S4,3D data fitting algorithms are 16 algorithms or 32 algorithms or 64 algorithms, and 3D data fitting is calculated
Method can also use the algorithm of other digits according to actual conditions.
3D data fitting algorithms are further described with an example below, the example is not intended as in the present invention
The restriction of 3D data fitting algorithms, as shown in figure 5, using 16 countings in this example（16 system microprocessors）, 1 in Fig. 3,2
Represent layering（01 represents fingerprint image layer, and 10 represent epidermis vein image layer, and 11 represent perspective vein image layer）；3~7 tables
Diagram is as tonal gradation（31 represent black, and 0 represents white）, 8~12 expression profile grades（31 represent that profile is 4 millimeters, often
One grade represents 0.125 millimeter）, 13~15 represent the data sequence number, 3 sequence numbers represent that position is coupled into 9, to feature
Points are counted, 16 expression feature vertex types（1 represents bifurcation, and 0 represents end points）.In the sequence number coupling of above-mentioned 13~15
After conjunction, the data are constituted with entirety, and the characteristic point data of adjacent serial number data is coherent, while by algorithm by each group of data
It is coupled, constitutes a bigger data group, while the data extracted on correspondence position is coupled, by interlayer data each
It is coupled into a three-dimensional array.
S5. unlock step：Electronics lock body is unlocked according to unlocking signal.The electronics lock body is driven by straight line coil
Dynamic, electronics lock body drives the lock bolt vibrations in electronics lock body when unlocking, first, then unlocks again, prevents door lock latch
In the case of lock bolt frictional force is excessive causes coil burnout.
Described above is only the preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form, is not to be taken as the exclusion to other embodiment, and available for various other combinations, modification and environment, and can be at this
In the text contemplated scope, it is modified by the technology or knowledge of above-mentioned teaching or association area.And those skilled in the art are entered
Capable change and change does not depart from the spirit and scope of the present invention, then all should appended claims of the present invention protection domain
It is interior.
Claims (9)
1. a kind of method for unlocking of electronic lock, the electronic lock includes fingerprint venous collection and verifies device and electronics lock body, fingerprint
Venous collection checking device includes shell（1）, signal processing part, be arranged on shell（1）Internal cavity（3）, be arranged on cavity
（3）And shell（1）Between image acquisition device and for drive image acquisition device rotate motor, signal processing part include micro- place
Device and digital signal processor are managed, image acquisition device includes supporting part（2）, shell（1）Inwall and supporting part（2）It is all provided with inwall
There are substrate layer, supporting part（2）The first side of inwall is provided with imaging sensor（6）With the first light source（5）, the first light source（5）
It is inclined at imaging sensor（6）Surrounding, supporting part（2）The second side of inwall is provided with secondary light source（7）, supporting part
（2）The first side and second side of inwall are relative, imaging sensor（6）, the first light source（5）, secondary light source（7）, motor and
Digital signal processor is connected with microprocessor, and microprocessor is connected with electronics lock body；It is characterized in that：This method includes
Following steps：
S1. original image acquisition step：Image acquisition device enters rotation around finger, and the original of finger is gathered in rotary course
Characteristic image, the primitive character IMAQ until completing 360 degree of finger, primitive character image includes fingerprint image and vein
Image, vein image includes epidermis vein image and perspective vein image, and the storage of primitive character image is stored up to the first encryption
Deposit the extra buffer of chip；
S2. original image pre-treatment step：With first encryption storage chip binding digital signal processor access this first plus
The extra buffer of close storage chip, is filtered, image binaryzation and micronization processes successively to primitive character image；Microprocessor
Device to the primitive character image of the extra buffer of the first storage enciphered storage chip with registration when stay in the first storage enciphered storage chip
The primitive character image of extra buffer carries out contrast verification, when the authentication succeeds, by the interim slow of the first storage enciphered storage chip
The primitive character image for rushing area dumps to the encrypted data region of the first storage enciphered storage chip, until by the primitive character image of finger
Collection is finished, while staying in the primitive character image of the extra buffer of the first storage enciphered storage chip during more new registration；
S3. original image verification step：Microprocessor is by the primitive character image pre-processed by digital signal processor with noting
The primitive character image that the encrypted data region of the first storage enciphered storage chip is stayed in during volume carries out contrast verification, when the authentication succeeds,
Characteristic is extracted from the primitive character image pre-processed by digital signal processor, this feature data include fingerprint characteristic
Data, epidermis vein pattern number and perspective vein pattern data, then characteristic is encrypted, and by the feature after encryption
Data storage is to encryption data scratchpad area (SPA), while staying in the encrypted data region of the first storage enciphered storage chip during more new registration
Primitive character image；
S4. finger live body verification step：After original image is proved to be successful, microprocessor will be stored in encryption data interim storage
The characteristic in area is fitted using 3D data fitting algorithms, obtains three-dimensional feature data to be verified；Obtain three-dimensional to be verified
Fingerprint central point and the veiny relative position of institute in characteristic, and by the relative position with registering three-dimensional feature data middle finger
The veiny relative position of line central point and institute carries out contrast verification, when both are consistent, is then proved to be successful, judges finger for work
Body, microprocessor sends unlocking signal, while more new registration three-dimensional feature data；
S5. unlock step：Electronics lock body is unlocked according to unlocking signal.
2. a kind of method for unlocking of electronic lock according to claim 1, it is characterised in that：Described image sensor（6）,
One light source（5）And secondary light source（7）Installation seating face be provided with substrate layer.
3. a kind of method for unlocking of electronic lock according to claim 1, it is characterised in that：The substrate by dulling material or
Black abrasive material is made.
4. a kind of method for unlocking of electronic lock according to claim 1, it is characterised in that：The supporting part（2）In four troubles
Claw type or jacket casing type.
5. a kind of method for unlocking of electronic lock according to claim 1, it is characterised in that：The shell（1）It is provided with chamber
Body door.
6. a kind of method for unlocking of electronic lock according to claim 1, it is characterised in that：Between step S4 and step S5 also
Including password authentification step：After password authentification success, microprocessor sends unlocking signal to electronic lock.
7. a kind of method for unlocking of electronic lock according to claim 1, it is characterised in that：In step S2, work as authentication failed
When, microprocessor adds timestamp for the primitive character image of authentication failed, and the primitive character image is dumped into second deposited
Store up the ephemeral data area of chip；In the range of certain time, the ephemeral data area that microprocessor detects the second storage chip is deposited
The quantity of the same biological primitive character image of storage carries out alert process when exceeding threshold value；When scratchpad area (SPA) storage to original
The quantity of beginning image is alarmed when exceeding threshold value.
8. a kind of method for unlocking of electronic lock according to claim 1, it is characterised in that：In step S2, work as primitive character
When IMAQ is not fully completed, if occurring authentication failed, microprocessor will be stored in the encryption number of the first storage enciphered storage chip
According to the primitive character image complete deletion in area.
9. a kind of method for unlocking of electronic lock according to claim 1, it is characterised in that：In step S4, the fitting of 3D data
Algorithm is 16 algorithms or 32 algorithms or 64 algorithms.
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| CN201510966484.XA CN105608770B (en) | 2015-12-22 | 2015-12-22 | A kind of electronic lock and its method for unlocking |
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|---|---|---|---|---|
| CN105427440B (en) * | 2015-12-22 | 2017-08-29 | 成都比善科技开发有限公司 | A kind of safe electronic lock and method for unlocking |
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