CN207216634U - A kind of living body finger print identification device - Google Patents
A kind of living body finger print identification device Download PDFInfo
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- CN207216634U CN207216634U CN201720818807.5U CN201720818807U CN207216634U CN 207216634 U CN207216634 U CN 207216634U CN 201720818807 U CN201720818807 U CN 201720818807U CN 207216634 U CN207216634 U CN 207216634U
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Abstract
The utility model discloses a kind of living body finger print identification device, including microcontroller and the phased array bio-identification module, detection module, memory and the power module that are connected with microcontroller；Microcontroller is used to handle real-time phased array bio-identification module and the information of detection module, phased array bio-identification module is used for fingerprint recognition, detection module is used for the physiological characteristic information for gathering user, memory is used for the finger print information and physiological characteristic information for storing user, and power module is used to power to microcontroller, phased array bio-identification module, detection module and memory.Phased array principle is applied on fingerprint sensor by the utility model, improve the discrimination and accuracy of fingerprint sensor, by increasing detection module, the risk that the false fingerprint spoof that fingerprint identification device is copied passes through is reduced, improves the security of fingerprint identification device.
Description
Technical field
It the utility model is related to fingerprint identification technology field, and in particular to a kind of living body finger print identification device.
Background technology
Fingerprint refers to streakline caused by the convex injustice of the positive surface skin fovea superior of the finger tips of people.The regular arrangement form of streakline
Different line types.The details of starting point, terminal, binding site and the bifurcation, referred to as fingerprint of streakline.Wherein it is possible to pass through
Compare the details of different fingerprints to be differentiated.Because everyone fingerprint is different, be exactly the ten of same people refer between,
Fingerprint also has significant difference, therefore fingerprint can be used for identity authentication.
Fingerprint identification technology is widely used to safety door inhibition, attendance, examination identification, safe, U at present
The fields such as disk data encryption.By the development of decades, fingerprint identification technology senses from previous optical recognition to the temperature difference
Formula identification technology, to semiconductor Silicon Capacitance Sensing Technology, then more advanced ultrasonic technology is arrived, all there is the safety being cracked
Risk.Only by identifying fingerprint pattern to be measured, the fingerprint pattern with being recorded in system is contrasted conventional fingerprint identification device,
If it is determined that unanimously then it is verified.But special imitation fingerprint film technology has occurred in the market, by the finger for replicating subject
Line pattern, fingerprint can be replicated on similar silica gel material, be then applied to make to be verified on fingerprint identification device, reach deception
The purpose of conventional fingerprint identification device so that intend the pass of the characteristics of using somatic fingerprint being uniqueness progress authentication originally
Card performs practically no function.
Utility model content
In order to solve the above problems, the utility model purpose is to provide a kind of vacation for reducing fingerprint identification device and being copied
The risk that fingerprint spoof passes through, and discrimination and safe living body finger print identification device.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of living body finger print identification device, including microcontroller and the phased array bio-identification mould that is connected with microcontroller
Block, detection module, memory and power module；Microcontroller is used to handle real-time phased array bio-identification module and detection module
Information, phased array bio-identification module is used for fingerprint recognition, and detection module is used for the physiological characteristic information for gathering user, storage
Device is used for the finger print information and physiological characteristic information for storing user, and power module is used for microcontroller, phased array bio-identification
Module, detection module and memory power supply.
Further, phased array bio-identification module includes multiple transmitting antennas, for sending multi-frequency and/or phase
Wireless signal, to finger print carry out wave beam electric scanning；Wireless signal generator, for inputting multi-frequency to transmitting antenna
And/or the wireless signal of phase wireless signal；Wireless signal adjuster, between wireless signal generator and transmitting antenna,
For adjusting the phase and/or frequency of wireless input signal；At least one reception antenna, finger is penetrated for receiving wireless signal
Multiple reflected signals for being loaded with finger print information are produced afterwards；Graphics processing unit, it is connected with reception antenna, for reception antenna to be connect
The reflected signal of receipts is processed into 3-D view.
Further, detection module is photoelectricity heart rate detection module, including light source, photoelectric sensor, amplifier module, mould
Number modular converter and chip one, source emissioning light signal to finger, photoelectric sensor are used to receive the photoelectricity transmitted through finger
Signal is simultaneously converted into electric signal, and amplifier module is used to convert the electrical signal to voltage signal and amplify, and analog-to-digital conversion module is used
Voltage signal after by amplification is converted into data signal, and chip one is used to receiving after data signal according to the algorithm being pre-designed
Carry out information processing.
Further, detection module is ECG detecting module, including dual-electrode sensor, filtration module, amplifier module,
Analog-to-digital conversion module and chip two, dual-electrode sensor are used to receive finger electrocardiosignal, and filtration module is done for filtering out low frequency
Signal is disturbed, amplifier module is used to filtered electric signal is changed into voltage signal and amplified, and analog-to-digital conversion module is used for will
Voltage signal after amplification is converted into data signal, and chip two is used to after receiving data signal carry out according to the algorithm being pre-designed
Information processing.
Further, living body finger print identification device also includes detection panel, phased array bio-identification module and detection module
It is arranged at the lower section of detection panel.
Preferably, light source is LED green light sources.
Compared with prior art, the beneficial effects of the utility model：
（1）Phased array principle is applied on fingerprint sensor by the utility model, multiple with not by launching to finger
The wireless signal of same-phase and frequency realizes wave beam electric scanning, so as to obtaining multiple reflections for being loaded with different depth finger print information
Signal, can obtain the 3-D view with abundant minutia after handling reflected signal, discrimination and accuracy are high；By
Finger print information is acquired in the wireless signal using more spectral coverages, therefore it is dry to exclude sweat, hand lotion, scar etc.
The factor of disturbing realizes the identification of information, improves discrimination；
（2）The utility model is simple to operate, and discrimination power and stability are high, and anti-counterfeit capability is strong, by increasing detection module, drop
The risk that the false fingerprint spoof that low fingerprint identification device is copied passes through, improve the security of fingerprint identification device.
Brief description of the drawings
Fig. 1 is principle schematic of the present utility model；
Fig. 2 is the structural representation of phased array bio-identification module；
Fig. 3 is the structural representation of photoelectricity heart rate detection module；
Fig. 4 is the structural representation of ECG detecting module；
Wherein, 1- transmitting antennas, 2- wireless signal generators, 3- wireless signals adjuster, 4- reception antennas, at 5- images
Manage unit.
Embodiment
With reference to Fig. 1 and Fig. 4, embodiment of the present utility model is elaborated, the present embodiment is new with this practicality
Implemented under premised on type technical scheme, give detailed embodiment and specific operating process, but the utility model
Protection domain be not limited to following embodiments.
The utility model discloses a kind of living body finger print identification device, as shown in figure 1, including microcontroller and and microcontroller
Phased array bio-identification module, detection module, memory and the power module of device connection.Microcontroller is phased in real time for handling
The information of battle array bio-identification module and detection module, memory are used for the finger print information and physiological characteristic information for storing user, electricity
Source module is used to power to microcontroller, phased array bio-identification module, detection module and memory.
It should be noted that living body finger print identification device also includes detection panel, phased array bio-identification module and detection
Module is arranged at the lower section of detection panel.
Phased array bio-identification module is used for fingerprint recognition, as shown in Fig. 2 including multiple transmitting antennas 1, it is more for sending
The wireless signal of kind frequency and/or phase, wave beam electric scanning is carried out to finger print, the frequency of wireless signal is in 1MHz ~ 5MHz
Between, the materials such as metal, plastics, glass can be penetrated, exclude the identification that the disturbing factors such as sweat, hand lotion, scar realize information,
Improve discrimination, the mode of wave beam electric scanning be mutually sweep, sweep frequently, phase/mutually sweep or phase/is swept, using a variety of wave beam electric scannings frequently
The combination of mode, the resolution and interference free performance of fingerprint can be further improved, realize adaptive collection, topology search and intelligence
The functions such as energy identification；Wireless signal generator 2, for inputting the nothing of multi-frequency and/or phase wireless signal to transmitting antenna
Line signal；Wireless signal adjuster 3, between wireless signal generator 2 and transmitting antenna 1, letter is wirelessly input to for adjusting
Number phase and/or frequency, the wireless signal for sending transmitting antenna 1 meets the needs of wave beam electric scanning；At least one reception
Antenna 4, multiple reflected signals for being loaded with finger print information are produced for receiving after wireless signal penetrates finger；Graphics processing unit 5,
It is connected with reception antenna 1, the reflected signal for reception antenna 1 to be received is processed into the three-dimensional with abundant details in fingerprint information
Image.
Detection module is used for the physiological characteristic information for gathering user, can be photoelectricity heart rate detection module or ECG detecting
Module, increase the detection of heart rate or cardiac electrophysiology parameter on the basis of phased array fingerprint recognition, improve the peace of fingerprint recognition
Quan Xing.
When detection module is photoelectricity heart rate detection module, as shown in figure 3, including light source, photoelectric sensor, amplifier mould
Block, analog-to-digital conversion module and chip one, finger is placed in detection panel, source emissioning light signal to finger, photoelectric sensor
For receiving the photosignal transmitted through finger and being converted into electric signal, amplifier module is used to convert the electrical signal to voltage letter
Number and amplify, analog-to-digital conversion module is used to the voltage signal after amplification being converted into data signal, and chip one is used to receive numeral
Information processing is carried out according to the algorithm being pre-designed after signal, obtains heart rate value.In order to improve the accuracy of heart rate detection, light source
Using LED green light sources.Chip one is transferred to microcontroller by obtained heart rate value is detected, then microcontroller by heart rate value with
Threshold value set in advance is contrasted, if the heart rate value detected, in threshold range, microcontroller is known to phased array biology
Other module sends sense command, proceeds by fingerprint detection, if the finger print information detected is with having previously been stored in memory
Finger print information is consistent, then detection passes through, if finger print information is inconsistent, detects and does not pass through；If heart rate value not in threshold range,
The fingerprint detection in next portion can not then be carried out.
When detection module is ECG detecting module, as shown in figure 4, including dual-electrode sensor, filtration module, amplifier
Module, analog-to-digital conversion module and chip two, finger is placed in detection panel, and the dual-electrode sensor below detection panel is used
In receiving finger electrocardiosignal, filtration module is used to filter out low-frequency interference signal, and amplifier module is used for filtered telecommunications
Number change into voltage signal and amplify, analog-to-digital conversion module is used to the voltage signal after amplification being converted into data signal, chip
Two are used to receive after data signal and carry out information processing according to the algorithm being pre-designed, and obtain heart rate value, chip two will detect
To heart rate value be transferred to microcontroller, then microcontroller is contrasted heart rate value and threshold value set in advance, if detection
For the heart rate value arrived in threshold range, then microcontroller sends sense command to phased array bio-identification module, proceeds by finger
Line detects, if the finger print information detected is consistent with having previously been stored in the finger print information in memory, detection passes through, if fingerprint
Information is inconsistent, then detects and do not pass through；If heart rate value not in threshold range, can not carry out the fingerprint detection in next portion.
When specifically used, finger is placed in detection panel, microcontroller sends order to detection module and carries out physiology
Parameter detecting, heart rate value is calculated by chip, then heart rate value is transferred to microcontroller by chip, and then microcontroller is by the heart
Rate value is contrasted with threshold value set in advance, if the heart rate value detected, in threshold range, microcontroller is to phased array
Bio-identification module sends sense command, proceeds by fingerprint detection, if the finger print information detected is with having previously been stored in storage
Finger print information in device is consistent, then detection passes through, if finger print information is inconsistent, detects and does not pass through；If heart rate value is not in threshold value
In the range of, then it can not carry out the fingerprint detection in next portion.
Phased array principle is applied on fingerprint sensor by the utility model, by having different phases to finger transmitting is multiple
The wireless signal of position and frequency realizes wave beam electric scanning, so as to obtain multiple reflections letters for being loaded with different depth finger print information
Number, the 3-D view with abundant minutia is obtained after handling reflected signal, discrimination and accuracy are high；Due to adopting
That the wireless signals of more spectral coverages is acquired to finger print information, thus can exclude the interference such as sweat, hand lotion, scar because
Element realizes the identification of information, improves discrimination.In addition, the utility model gathers the physiology of user by increasing detection module
Characteristic information, In vivo detection is realized, reduce the risk that the false fingerprint spoof that fingerprint identification device is copied passes through, improve finger
The security of line identification device.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (6)
- A kind of 1. living body finger print identification device, it is characterised in that the phased array life being connected including microcontroller and with microcontroller Thing identification module, detection module, memory and power module；Microcontroller be used for handle real-time phased array bio-identification module and The information of detection module, phased array bio-identification module are used for fingerprint recognition, and detection module is used for the physiological characteristic for gathering user Information, it is photoelectricity heart rate detection module or ECG detecting module；Memory is used for the finger print information and physiological characteristic for storing user Information, power module are used to power to microcontroller, phased array bio-identification module, detection module and memory.
- 2. living body finger print identification device according to claim 1, it is characterised in that phased array bio-identification module includes more Individual transmitting antenna, for sending the wireless signal of multi-frequency and/or phase, wave beam electric scanning is carried out to finger print；Wirelessly Signal generator, for inputting the wireless signal of multi-frequency and/or phase wireless signal to transmitting antenna；Wireless signal is adjusted Device, between wireless signal generator and transmitting antenna, for adjusting the phase and/or frequency of wireless input signal；At least One reception antenna, multiple reflected signals for being loaded with finger print information are produced for receiving after wireless signal penetrates finger；At image Unit is managed, is connected with reception antenna, the reflected signal for reception antenna to be received is processed into 3-D view.
- 3. living body finger print identification device according to claim 1, it is characterised in that detection module is photoelectricity heart rate detection mould Block, including light source, photoelectric sensor, amplifier module, analog-to-digital conversion module and chip one, source emissioning light signal to hand Refer to, photoelectric sensor is used for the photosignal received transmitted through finger and is converted into electric signal, and amplifier module is used for telecommunications Number it is converted into voltage signal and amplifies, analog-to-digital conversion module is used to the voltage signal after amplification being converted into data signal, chip One is used to receive after data signal and carries out information processing according to the algorithm being pre-designed.
- 4. living body finger print identification device according to claim 1, it is characterised in that detection module is ECG detecting module, Including dual-electrode sensor, filtration module, amplifier module, analog-to-digital conversion module and chip two, dual-electrode sensor is used to connect Finger electrocardiosignal is received, filtration module is used to filter out low-frequency interference signal, and amplifier module is used to turn filtered electric signal Formation voltage signal simultaneously amplifies, and analog-to-digital conversion module is used to the voltage signal after amplification being converted into data signal, and chip two is used After data signal is received information processing is carried out according to the algorithm being pre-designed.
- 5. the living body finger print identification device according to any one of Claims 1-4, it is characterised in that also including detection panel, Phased array bio-identification module and detection module are arranged at the lower section of detection panel.
- 6. living body finger print identification device according to claim 3, it is characterised in that light source is LED green light sources.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720818807.5U CN207216634U (en) | 2017-07-07 | 2017-07-07 | A kind of living body finger print identification device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720818807.5U CN207216634U (en) | 2017-07-07 | 2017-07-07 | A kind of living body finger print identification device |
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| CN207216634U true CN207216634U (en) | 2018-04-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107194382A (en) * | 2017-07-07 | 2017-09-22 | 合肥芯福传感器技术有限公司 | A kind of living body finger print identifying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107194382A (en) * | 2017-07-07 | 2017-09-22 | 合肥芯福传感器技术有限公司 | A kind of living body finger print identifying device |
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