CN107145881A - A kind of integrated form phased array fingerprint sensor - Google Patents
A kind of integrated form phased array fingerprint sensor Download PDFInfo
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- CN107145881A CN107145881A CN201710551160.9A CN201710551160A CN107145881A CN 107145881 A CN107145881 A CN 107145881A CN 201710551160 A CN201710551160 A CN 201710551160A CN 107145881 A CN107145881 A CN 107145881A
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- phased array
- fingerprint sensor
- gyroscope
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- 238000013461 design Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
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- 210000004209 hair Anatomy 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000030214 innervation Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000006210 lotion Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 231100000241 scar Toxicity 0.000 description 2
- 210000004243 sweat Anatomy 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000003542 behavioural effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Image Input (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The present invention discloses a kind of integrated form phased array fingerprint sensor, including a circuit board, microcontroller is set on the circuit board, phased array transceiver module for fingerprint recognition, gyroscope, acceleration transducer, the analog matrix switch switched for signal, A/D modular converters and the power module for power supply；Phased array transceiver module, gyroscope and acceleration transducer are electrically connected by analog matrix switch with the input of A/D modular converters, and the output end of A/D modular converters is electrically connected with microcontroller.Phased array principle is applied in fingerprint recognition by the present invention, improve discrimination and accuracy, gyroscope and acceleration transducer are integrated on phased array fingerprint sensor, integrated design, it is simple in construction, small volume, while reducing the influence of outer bound pair sensor signal, improves the stability of sensor.The present invention solves single fingerprint sensor high power consumption, can not wake up and the problems such as mobile alarm.
Description
Technical field
The present invention relates to sensor technology, and in particular to a kind of integrated form phased array fingerprint sensor.
Background technology
Fingerprint sensor is the Primary Component for realizing fingerprint automatic data collection.The spies such as uniqueness and portability due to fingerprint
Point, fingerprint sensor has been widely used for the identity information certifications such as financial payment, security protection facility, attendance checking system identification field.
Traditional fingerprint recognition mode has optical identification, electric capacity identification.The defect that wherein electric capacity identification method is present is pair
It is low in discriminations such as dirty finger, wet fingers.Current relatively advanced fingerprint identification technology is radio-frequency fingerprint identification technology, but is adopted
The frequency and phase of radiofrequency signal are single, cause its investigation depth and dimension to be confined to the finger of constant depth within tens μm
On wrinkle ridge line two dimensional image, can not further it collect including bio-identifications such as fingerprint ridge line, fine hair hole, capillary, bones
3-D view including information, limits the further raising of discrimination, accuracy and antifalsification.Biological identification technology refers to lead to
The high-tech means such as computer and optics, acoustics, biology sensor and biostatistics principle are crossed to be intimately associated, it is solid using human body
Some physiological properties, such as fingerprint, face as, iris and behavioural characteristic, carry out a person such as person's handwriting, sound, gait
The technological means of part identification, has the advantages that anti-interference factor is strong, discrimination is high.But, it is necessary to " move in special field
Dynamic, distance " detection technique, the problems such as to solve sensor wake-up, low-power consumption, mobile alarm, tracing of the movement, these problems
Solution rely solely on single biological identification technology and can not realize.
The content of the invention
In order to solve the above problems, the present invention provides a kind of fingerprint recognition rate and accuracy height and can solve the problem that single sensing
Device high power consumption, it can not wake up and integrated form phased array fingerprint sensor the problems such as mobile alarm.
To achieve these goals, the technical solution adopted by the present invention is：
Microcontroller is set on a kind of integrated form phased array fingerprint sensor, including a circuit board, circuit board, for launch and
The phased array transceiver module of wireless signal is received, gyroscope, acceleration transducer is switched for the analog matrix that signal switches,
A/D modular converters and the power module for power supply；Microcontroller is used to handle real-time phased array transceiver module, gyroscope and added
The information of velocity sensor, phased array transceiver module, gyroscope and acceleration transducer are changed by analog matrix switch with A/D
The input electrical connection of module, the output end of A/D modular converters is electrically connected with microcontroller.
Further, GPS module is set on circuit board, and GPS module is connected with microcontroller.
Further, phased array transceiver module includes multiple transmitting antennas, the nothing for sending multi-frequency and/or phase
Line signal, wave beam electric scanning is carried out to finger print；Wireless signal generator, for transmitting antenna input multi-frequency and/
Or the wireless signal of phase wireless signal；Unlimited signal adjuster, between unlimited signal generator and transmitting antenna, is used for
Adjust the phase and/or frequency of wireless input signal；At least one reception antenna, production after finger is penetrated for receiving wireless signal
Raw multiple reflected signals for being loaded with finger print information.
Preferably, microprocessor is the integrated chip based on MCU and DSP architecture.
Preferably, gyroscope is three-axis gyroscope.
Preferably, acceleration transducer is MEMS 3-axis acceleration sensors.
Preferably, microcontroller carries out information transfer by I2C interfaces or SPI interface.
Compared with prior art, beneficial effects of the present invention：
（1）Gyroscope and acceleration transducer are integrated on phased array fingerprint sensor by the present invention, integrated design, structure letter
Single, small volume saves installing space, maintains easily and install, and outer bound pair sensor signal is reduced using integration mode
Influence, improves the stability of sensor.It the composite can be widely applied to the plurality of devices such as mobile phone, automobile, Intelligent bracelet, seal
In, fingerprint authentication is can be not only used for, and innervation experiencing operation, the tracking of movement locus can be carried out or adjusted according to demand
Equipment state is dormancy or wake-up, so as to reduce power module power consumption, energy-conserving and environment-protective；
（2）The present invention phased array principle is applied on fingerprint sensor, by finger launch it is multiple have out of phase and
The wireless signal of frequency realizes wave beam electric scanning, so that obtain multiple reflected signals for being loaded with different depth finger print information, it is right
Reflected signal can obtain the 3-D view with abundant minutia after being handled, discrimination and accuracy are high；Due to using
Be that the wireless signals of many spectral coverages is acquired to finger print information, therefore the disturbing factors such as sweat, hand lotion, scar can be excluded
The identification of information is realized, discrimination is improved.
Brief description of the drawings
Fig. 1 is the principle schematic of the present invention；
Fig. 2 is the structural representation of phased array transceiver module in the present invention；
Wherein, 1- transmitting antennas, 2- reception antennas, 3- unlimited signals generator, 4- wireless signal adjusters.
Embodiment
With reference to Fig. 1 and Fig. 2, embodiments of the invention are elaborated, the present embodiment is with the technology of the present invention side
It is lower premised on case to be implemented, detailed embodiment and specific operating process are given, but protection scope of the present invention is not
It is limited to following embodiments.
The invention discloses a kind of integrated form phased array fingerprint sensor, including a circuit board, as shown in figure 1, circuit
Microcontroller is set on plate, the phased array transceiver module for launching and receiving wireless signal, gyroscope, acceleration transducer,
The analog matrix switch switched for signal, A/D modular converters and power module.Microcontroller is used to handle real-time phased array receipts
The information of module, gyroscope and acceleration transducer is sent out, power module is used to power for whole circuit system.
Phased array transceiver module is used to launching and receiving wireless signal progress fingerprint recognition, as shown in Fig. 2 including multiple hairs
Antenna 1 is penetrated, the wireless signal for sending multi-frequency and/or phase carries out wave beam electric scanning, wireless signal to finger print
Frequency between 1MHz ~ 5MHz, can penetrate the materials such as metal, plastics, glass, exclude the interference such as sweat, hand lotion, scar because
Element realizes the identification of information, improves discrimination, the mode of wave beam electric scanning be mutually sweep, sweep frequently, phase/mutually sweeping or phase/is swept, adopted frequently
With the combination of a variety of wave beam electric scanning modes, the resolution and interference free performance of fingerprint can be further improved, is realized adaptive
The functions such as collection, topology search and Intelligent Recognition；Wireless signal generator 3, for transmitting antenna input multi-frequency and/or
The wireless signal of phase wireless signal；Unlimited signal adjuster 4, between unlimited signal generator 3 and transmitting antenna 1, is used
In the phase and/or frequency of regulation wireless input signal；At least one reception antenna 2, finger is penetrated for receiving wireless signal
Multiple reflected signals for being loaded with finger print information are produced afterwards.
Analog matrix switch is connected by transmission circuit with phased array transceiver module, and what reception antenna 2 was received is loaded with fingerprint
The reflected signal of information is filtered after noise reduction and enhanced processing by transmission circuit is conveyed to analog matrix switch, and phased array is received
Hair module, gyroscope and acceleration transducer are electrically connected by analog matrix switch with the input of A/D modular converters, and A/D turns
The output end of mold changing block is electrically connected with microcontroller.Analog matrix switch is ordered phased array transceiver module, gyro according to demand
Instrument, the signal of acceleration transducer are switched over, and selectively transmit a signal to A/D modular converters, and A/D modular converters will be received
Electric signal be converted into data signal；Microprocessor receives data signal and carries out image procossing or calculating to signal as needed
Draw corresponding data.In the present embodiment, microprocessor is the integrated chip based on MCU and DSP architecture, with powerful letter
Number processing function, and there is low-power consumption, low cost and small package；Gyroscope uses three-axis gyroscope, acceleration
Sensor is MEMS 3-axis acceleration sensors.Microcontroller carries out information transfer by I2C interfaces or SPI interface.
GPS module also can be set on circuit board, for positioning position information, GPS module is connected with microcontroller, works as GPS
During the dropout of module, microcontroller also can carry out tracing of the movement according to the signal of gyroscope and acceleration transducer.
It the composite can be widely applied in the plurality of devices such as mobile phone, automobile, Intelligent bracelet, seal, can be not only used for referring to
Line verify, and can carry out innervation experiencing operation, the tracking of movement locus or according to demand adjusting device state be dormancy or
Wake up, so as to reduce power module power consumption, energy-conserving and environment-protective.
, it is necessary to which during using seal, fingerprint authentication, phased array transceiver module are carried out first so that the present invention is applied to seal as an example
Start, treat that the consistent rear of fingerprint authentication can be used.When seal is kept flat, gyroscope and acceleration transducer detect seal in quiet
Only state, is transferred to microcontroller, microcontroller adjustment power module is low-power consumption powering mode, i.e. dormancy mould by this signal
Formula, reduces power module power consumption, energy-conserving and environment-protective；When needing to use seal, gyroscope and acceleration transducer detect seal
It is mobile, this signal is transferred to microcontroller, microcontroller adjusts power module for normal power supply pattern, i.e. awakening mode again,
It is easy to use.
, it is necessary to which during unlocked by fingerprint, phased array transceiver module starts, and carries out so that the present invention is applied to automobile or electric car as an example
Fingerprint authentication；When needing the positional information of positioning automobile or electric car, GPS module starts, and obtains positional information；It should be understood that vapour
The movement locus of car or electric car, and the signal of GPS module is weaker or during dropout, gyroscope and acceleration transducer detection
Signal simultaneously transmits a signal to microcontroller, obtains their movement locus.
By the present invention applied to the elderly with intelligent watch exemplified by, it is necessary to start intelligent watch carry out unlocked by fingerprint when,
Phased array transceiver module starts, and carries out fingerprint authentication；When needing positioning position information, GPS module starts, and obtains positional information；
When gyroscope and acceleration transducer detect the weightless twinkling signal of Falls Among Old People, this signal is transferred to microcontroller,
Microcontroller can control external siren to send alarm, remind other people that tumble old man is propped up and given treatment in time.
Gyroscope and acceleration transducer are integrated on phased array fingerprint sensor by the present invention, integrated design, structure
Simply, small volume, saves installing space, maintains easily and installs, and outer bound pair sensor signal is reduced using integration mode
Influence, improve the stability of sensor.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. a kind of integrated form phased array fingerprint sensor, including a circuit board, it is characterised in that set micro- on the circuit board
Controller, the phased array transceiver module for launching and receiving wireless signal, gyroscope, acceleration transducer is cut for signal
The analog matrix switch changed, A/D modular converters and the power module for power supply；Microcontroller is used to handle real-time phased array receipts
The information of module, gyroscope and acceleration transducer is sent out, phased array transceiver module, gyroscope and acceleration transducer pass through simulation
Matrix switch is electrically connected with the input of A/D modular converters, and the output end of A/D modular converters is electrically connected with microcontroller.
2. the integrated form phased array fingerprint sensor according to claim requirement 1, it is characterised in that set on circuit board
GPS module, GPS module is connected with microcontroller.
3. integrated form phased array fingerprint sensor according to claim 1 or 2, it is characterised in that phased array transceiver module
Including multiple transmitting antennas, the wireless signal for sending multi-frequency and/or phase carries out wave beam electricity to finger print and swept
Retouch；Wireless signal generator, the wireless signal for inputting multi-frequency and/or phase wireless signal to transmitting antenna；Infinitely
Signal conditioner, between unlimited signal generator and transmitting antenna, phase and/or frequency for adjusting wireless input signal
Rate；At least one reception antenna, penetrates for receiving wireless signal and multiple reflected signals for being loaded with finger print information is produced after finger.
4. integrated form phased array fingerprint sensor according to claim 1 or 2, it is characterised in that microprocessor is to be based on
MCU and DSP architecture integrated chip.
5. integrated form phased array fingerprint sensor according to claim 1 or 2, it is characterised in that gyroscope is three axle tops
Spiral shell instrument.
6. integrated form phased array fingerprint sensor according to claim 1 or 2, it is characterised in that acceleration transducer is
MEMS 3-axis acceleration sensors.
7. integrated form phased array fingerprint sensor according to claim 1 or 2, it is characterised in that microcontroller passes through I2C
Interface or SPI interface carry out information transfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710551160.9A CN107145881A (en) | 2017-07-07 | 2017-07-07 | A kind of integrated form phased array fingerprint sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710551160.9A CN107145881A (en) | 2017-07-07 | 2017-07-07 | A kind of integrated form phased array fingerprint sensor |
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| CN107145881A true CN107145881A (en) | 2017-09-08 |
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| CN201710551160.9A Pending CN107145881A (en) | 2017-07-07 | 2017-07-07 | A kind of integrated form phased array fingerprint sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110675607A (en) * | 2019-10-21 | 2020-01-10 | 珠海优特物联科技有限公司 | Information prompting method and device based on seal |
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| TW528854B (en) * | 2001-09-04 | 2003-04-21 | American Gnc Corp | Digital signal processing method and system thereof for precision orientation measurements |
| CN102541307A (en) * | 2011-12-31 | 2012-07-04 | 惠州市德赛视听科技有限公司 | Integrated sensor |
| CN205621019U (en) * | 2016-03-07 | 2016-10-05 | 合肥芯福传感器技术有限公司 | Phased array biological identification information acquisition module |
| CN106469290A (en) * | 2015-08-17 | 2017-03-01 | 小米科技有限责任公司 | Touch key-press and fingerprint recognition compatibility implementation method, device and terminal unit |
| CN206209622U (en) * | 2016-07-05 | 2017-05-31 | 陕西科技大学 | A kind of wireless midair mouse based on STM32 microcontrollers |
| CN206907051U (en) * | 2017-07-07 | 2018-01-19 | 合肥芯福传感器技术有限公司 | A kind of integrated form phased array fingerprint sensor |
-
2017
- 2017-07-07 CN CN201710551160.9A patent/CN107145881A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW528854B (en) * | 2001-09-04 | 2003-04-21 | American Gnc Corp | Digital signal processing method and system thereof for precision orientation measurements |
| CN102541307A (en) * | 2011-12-31 | 2012-07-04 | 惠州市德赛视听科技有限公司 | Integrated sensor |
| CN106469290A (en) * | 2015-08-17 | 2017-03-01 | 小米科技有限责任公司 | Touch key-press and fingerprint recognition compatibility implementation method, device and terminal unit |
| CN205621019U (en) * | 2016-03-07 | 2016-10-05 | 合肥芯福传感器技术有限公司 | Phased array biological identification information acquisition module |
| CN206209622U (en) * | 2016-07-05 | 2017-05-31 | 陕西科技大学 | A kind of wireless midair mouse based on STM32 microcontrollers |
| CN206907051U (en) * | 2017-07-07 | 2018-01-19 | 合肥芯福传感器技术有限公司 | A kind of integrated form phased array fingerprint sensor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110675607A (en) * | 2019-10-21 | 2020-01-10 | 珠海优特物联科技有限公司 | Information prompting method and device based on seal |
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Application publication date: 20170908 |