CN107169396A - Phased array biometric information gathers module and acquisition method - Google Patents
Phased array biometric information gathers module and acquisition method Download PDFInfo
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- CN107169396A CN107169396A CN201610127094.8A CN201610127094A CN107169396A CN 107169396 A CN107169396 A CN 107169396A CN 201610127094 A CN201610127094 A CN 201610127094A CN 107169396 A CN107169396 A CN 107169396A
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- biometric information
- phased array
- transmitting antenna
- reception antenna
- wireless signal
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims description 9
- 238000010408 sweeping Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 238000011161 development Methods 0.000 abstract description 2
- 210000002615 epidermis Anatomy 0.000 description 5
- 210000003491 skin Anatomy 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 231100000241 scar Toxicity 0.000 description 3
- 210000004243 sweat Anatomy 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 239000006210 lotion Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000003666 anti-fingerprint Effects 0.000 description 1
- 230000003542 behavioural effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005021 gait Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- 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
Abstract
The present invention provides a kind of phased array biometric information collection module and acquisition method, the phased array biometric information collection module includes multiple transmitting antennas and at least one reception antenna, the multiple transmitting antenna is used to send multi-frequency and/or the wireless signal of phase, multiple reflected signals for being loaded with different depth biometric information are produced after wave beam electric scanning, position where the wireless signal penetrates biometric information are carried out to position where biometric information;The reception antenna is used to receive multiple reflected signals for being loaded with different depth biometric information;The multiple reflected signal for being loaded with different depth biometric information can be processed into 3-D view.The present invention applies phased array principle into biological identification technology, there is abundant minutia and be difficult to imitated 3-D view including fingerprint ridge line, fine hair hole, capillary, bone can be obtained, prevent the forgery behavior of the biometric informations such as false fingerprint, fingerprint film, be that the development of future biological identification technology specifies direction.
Description
Technical field
The present invention relates to a kind of bio-identification collection module and acquisition method, and in particular to a kind of phased array biometric information collection module and acquisition method.
Background technology
Biological identification technology refers to be intimately associated by high-tech means such as computer and optics, acoustics, biology sensor and biostatistics principles, utilize the intrinsic physiological property of human body, such as fingerprint, face as, iris and behavioural characteristic, the technological means of personal identification identification is carried out such as person's handwriting, sound, gait.Wherein, due to the uniqueness and portability of fingerprint the features such as, fingerprint recognition has become the major part of numerous biometric informations, is widely used in the identity information certifications such as financial payment, security protection facility, attendance checking system identification field.
Fingerprint is by the projection in the linear alignment on finger epidermis(Line peak)With depression(Line paddy)The lines formed, is typical living thing's skins lines.Traditional fingerprint recognition mode has optical identification, electric capacity identification.Wherein, electric capacity identification method is imaged by forming the difference of electric capacity between the convex-concave and electrode between the line peak of fingerprint and line paddy, and then the fingerprint pattern contacted with fingerprint Identification sensor is obtained, but the defect that electric capacity identification method is present is low for the difficult finger discrimination such as dirty finger, wet finger.And current relatively advanced fingerprint identification technology is ultrasound and radio-frequency fingerprint identification technology, wherein, radio-frequency fingerprint identification technology is the micro radiofrequency signal launched by radio frequency sensor, penetrating finger epidermis goes control to survey nexine lines to obtain fingerprint image, and the spots such as the sweat in anti-fingerprint, grease, scar can be remained.
At present, radio-frequency fingerprint acquisition technique only has a small number of offshore companies to realize, such as United States Patent (USP) US6512381, radio-frequency fingerprint collection can be achieved, but the frequency and phase of its radiofrequency signal used are single, its investigation depth and dimension is caused to be confined on the fingerprint ridge line two dimensional image of constant depth within tens μm, can not further it collect including fingerprint ridge line, fine hair hole, capillary, 3-D view including the biometric informations such as bone, limit the discrimination of biological identification technology, accuracy, the further raising of antifalsification, demand of the market to higher performance biological identification technology can not be met.
The content of the invention
In order to solve the above problems, module is gathered it is an object of the invention to provide a kind of phased array biometric information, wave beam electric scanning is carried out using the frequency and phase place change of phased array antenna, final collection obtains the 3-D view with abundant minutia.
The technical solution adopted by the present invention:A kind of phased array biometric information gathers module, including multiple transmitting antennas and at least one reception antenna, the multiple transmitting antenna is used to send multi-frequency and/or the wireless signal of phase, multiple reflected signals for being loaded with different depth biometric information are produced after wave beam electric scanning, position where the wireless signal penetrates biometric information are carried out to position where biometric information;The reception antenna is used to receive multiple reflected signals for being loaded with different depth biometric information, and the multiple reflected signal for being loaded with different depth biometric information can be processed into 3-D view.
Preferably, the biometric information is the one or more in fingerprint, pore, capillary, bone.
Preferably, the phased array biometric information collection module also includes the wireless signal generating unit for being used to input multi-frequency and/or phase wireless signal to transmitting antenna, the wireless signal generating unit is made up of wireless signal generator and controller, the controller is connected between wireless signal generator and transmitting antenna, phase and/or frequency for adjusting wireless input signal.
Preferably, the number of the controller is 1, and multiple transmitting antennas share same controller;Or the number of the controller is equal to the number of transmitting antenna, each transmitting antenna configures a controller.
Preferably, the phased array biomedical information acquisition module also includes the graphics processing unit being connected with reception antenna, and multiple reflected signals for being loaded with different depth biometric information for reception antenna to be received are processed into 3-D view.
Preferably, the transmitting antenna and reception antenna are aligned in the linear array in one-dimensional square;Or, the planar array of transmitting antenna and the reception antenna arrangement in the two-dimensional direction;Or, the transmitting antenna and reception antenna are aligned in the conformal array on curve or curved surface.
Preferably, the number ratio of the transmitting antenna and reception antenna is 1:1、2:1 or 1:2.
Preferably, the pattern of the transmitting antenna and the reception antenna can be triangle, square, rhombus, rectangle, regular hexagon, circle or ellipse.
Preferably, the frequency for the wireless signal that the transmitting antenna is sent is between 1MHz ~ 5GHz;The mode of the wave beam electric scanning be mutually sweep, sweep frequently, phase/mutually sweeping or phase/is swept frequently.
It is a further object to provide a kind of biometric information acquisition method, wave beam electric scanning is carried out using the frequency and phase place change of phased array antenna, it is final to obtain the 3-D view with abundant minutia.
The technical solution adopted by the present invention is:A kind of biometric information acquisition method, comprises the following steps:A) transmitting antenna in phased array radiator realizes the wave beam electric scanning to position where biometric information to a variety of wireless signals with out of phase and/or frequency of position transmitting where biometric information;B) multiple reflected signals for being loaded with different depth biometric information are produced behind position where the wireless signal of a variety of phases and/or frequency penetrates biometric information, the multiple reflected signal for being loaded with different depth biometric information can be processed into 3-D view;C) the multiple reflected signal for being loaded with different depth biometric information is received by reception antenna.
Preferably, in addition to step d:Multiple reflected signals for being loaded with different depth biometric information that reception antenna is received are transmitted to graphics processing unit, and 3-D view is processed into by graphics processing unit.
Preferably, the biometric information is the one or more in fingerprint, fine hair hole, capillary, bone.
Preferably, the mode of the wave beam electric scanning be mutually sweep, sweep frequently, phase/mutually sweeping or phase/is swept frequently.
Compared with prior art, the beneficial effects of the present invention are:
Phased array principle is applied in the acquisition technique of biometric information by the present invention pioneeringly, by to position where biometric information, such as finger print position sends multiple wireless signals with out of phase and frequency to realize wave beam electric scanning, so as to obtain multiple reflected signals for being loaded with different depth biometric information, carrying out post-processing to reflected signal can obtain including fingerprint ridge line, fine hair hole, capillary, there is abundant minutia and be difficult to imitated 3-D view including bone, prevent false fingerprint, the forgery behavior of the biometric informations such as fingerprint film;In addition, the shell of the materials such as metal, plastics, glass preparation can be easily penetrated using the wireless signal acquiring biometric information of many spectral coverages, exclude the identification that biological information is realized in the interference such as sweat, hand lotion, scar, the problem of traditional biological identification technology discrimination is low is solved, is that the development of future biological identification technology specifies direction.
Brief description of the drawings
Fig. 1 is the structural representation that phased array biometric information gathers module;
Fig. 2 is phased array biometric information collection module principle schematic 1;
Fig. 3 is phased array biometric information collection module principle schematic 2;
Fig. 4(a)It is the arrangement mode one of transmitting antenna and reception antenna in a kind of phased array biometric information collection module provided in an embodiment of the present invention;
Fig. 4(b)It is the arrangement mode two of transmitting antenna and reception antenna in a kind of phased array biometric information collection module provided in an embodiment of the present invention;
Fig. 5(a)It is the arrangement mode three of transmitting antenna and reception antenna in a kind of phased array biometric information collection module provided in an embodiment of the present invention;
Fig. 5(b)It is the arrangement mode four of transmitting antenna and reception antenna in a kind of phased array biometric information collection module provided in an embodiment of the present invention;
Fig. 5(c)It is the arrangement mode five of transmitting antenna and reception antenna in a kind of phased array biometric information collection module provided in an embodiment of the present invention;
Fig. 6 is the arrangement mode six of transmitting antenna and reception antenna in a kind of phased array biometric information collection module provided in an embodiment of the present invention;
Fig. 7 is the arrangement mode seven of transmitting antenna and reception antenna in a kind of phased array biometric information collection module provided in an embodiment of the present invention;
Fig. 8 is the arrangement mode eight of transmitting antenna and reception antenna in a kind of phased array biometric information collection module provided in an embodiment of the present invention;
Fig. 9 is the arrangement mode nine of transmitting antenna and reception antenna in a kind of phased array biometric information collection module provided in an embodiment of the present invention;
Figure 10 is the arrangement mode ten of transmitting antenna and reception antenna in a kind of phased array biometric information collection module provided in an embodiment of the present invention;
Figure 11 is the arrangement mode 11 of transmitting antenna and reception antenna in a kind of phased array biometric information collection module provided in an embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Referring to Fig. 1, a kind of phased array biometric information gathers module, including multiple transmitting antennas 21 and at least one reception antenna 22, the multiple transmitting antenna is used to send multi-frequency and/or the wireless signal of phase, wave beam electric scanning is carried out to position where biometric information, in the present embodiment, position where the biometric information is the fingerprint position of finger 10, the wireless signal, which is penetrated, produces multiple reflected signals for being loaded with different depth biometric information after finger 10, the biometric information includes fingerprint, pore, one or more in capillary and bone;The reception antenna 22 is used to receive multiple reflected signals for being loaded with different depth biometric information;The multiple reflected signal of different depth biometric information that is loaded with can be processed into having abundant minutia and being difficult to imitated 3-D view including fingerprint ridge line, fine hair hole, capillary, bone, prevent the forgery behavior of the biometric informations such as false fingerprint, fingerprint film.
It should be noted that the phased array biometric information collection module may also include covering transmitting antenna and reception antenna, and the test panel or protection screen being in contact with measured's finger 10 etc. certainly.
Referring to Fig. 2 and Fig. 3, the phased array biometric information collection module also includes the wireless signal generating unit 30 for being used to input multi-frequency and/or phase wireless signal to transmitting antenna 21, the wireless signal generating unit is made up of wireless signal generator 31 and controller 32, the controller 32 is connected between wireless signal generator 31 and multiple transmitting antennas 21, phase and/or frequency for adjusting wireless input signal, the wireless signal for sending transmitting antenna 21 meet the demand of wave beam electric scanning.In the present embodiment, the number of the controller is equal to the number of transmitting antenna, that is, each transmitting antenna is equipped with the regulation that a controller enters line frequency and/or phase to wireless input signal.Referring to Fig. 3, the multiple transmitting antenna 21 can also share same controller 32 to save controller, simplified control circuit.It should be noted that the number of controller is not limited thereto, the present invention is not specifically limited.
Referring to Fig. 3; the frequency for the wireless signal that the transmitting antenna 21 is sent is between 1MHz ~ 5GHz; the test panel or protection screen being made up of materials such as metal, plastics, glass can easily be penetrated; exclude the relevant finger print information in interference detection the finger epidermis 10a and skin corium 10b such as sweat, hand lotion, scar, the information such as the crest 11 and trough 12 of fingerprint ridge line, fine hair hole, capillary or bone.The mode of wave beam electric scanning can be specifically mutually sweep, sweep frequently, phase/mutually sweeping or phase/is swept frequently.Wherein, mutually sweep is to change phase relation to realize that wave beam electricity is swept using phase shifter;It is to realize that wave beam electricity is swept using the method for working frequency is changed that frequency, which is swept,;Phase/mutually sweep is to realize that wave beam electricity is swept using phase shifter control plane two angular coordinates of battle array;And phase/sweep frequently is that another coordinate changes control to realize that wave beam electricity is swept using frequency using phase shifter control plane one coordinate of battle array.The combination of a variety of wave beam electric scanning modes can further improve the resolution and interference free performance that biometric information gathers module, realize the functions such as adaptive collection, topology search and Intelligent Recognition.
Further, the phased array fingerprint collecting module also includes the graphics processing unit 40 being connected with reception antenna 22, multiple reflected signals of different depth biometric information that are loaded with for reception antenna 22 to be received are processed into having abundant details and be difficult to imitated 3-D view including fingerprint, fine hair hole, capillary, bone, prevent the forgery behavior of the biometric informations such as false fingerprint, fingerprint film.
In the present embodiment, the ratio of the transmitting antenna and reception antenna is 1:1, each transmitting antenna 21 and reception antenna 22 constitute a phased array radiator 20, and the arrangement of the transmitting antenna and reception antenna can be various ways.
Example, the linear array on one-dimensional square D1 or D2, such as Fig. 4 (a) and 4 can be aligned in(b)Shown, the transmitting antenna and reception antenna are in a row arranged alternately on D1 or D2 directions.
Or, the phased array radiator can be aligned in the planar array on two-dimensional directional D1 and D2, such as Fig. 5(a)To 5(c)Shown, the transmitting antenna and reception antenna are in a row arranged alternately on D1 and/or D2 directions, and wherein D1 and D2 directions intersect, but its intersecting angle is not limited;
Or, the transmitting antenna and reception antenna can also be the conformal array being arranged on curve or curved surface, as shown in fig. 6, the transmitting antenna and reception antenna are in a row arranged alternately on concave curvatures D3 directions.The advantage of the conformal array arranged with concave curvatures is:The trickle finger print information at the finger tip that plane identification instrument can not be obtained can be obtained when finger is touched on concave curvatures shape test panel, fingerprint recognition accuracy is further improved.
Also, Fig. 4 to Fig. 6 is only identical with the shape of reception antenna and exemplified by being square by transmitting antenna.But the shape of transmitting antenna and reception antenna is in addition to square, the other shapes such as triangle, rectangle, rhombus, regular hexagon, circle or ellipse are can also be, as shown in Fig. 6 to Figure 10.In addition, the shape of transmitting antenna and reception antenna can also be differed, the present invention is not limited.
Here, the ratio of the transmitting antenna and reception antenna is not limited to 1:1, it can also be 2:1, that is, every 2 transmitting antennas and 1 reception antenna one phased array radiator of composition, as shown in figure 11, or other arbitrary proportions, but at least to ensure there is multiple transmitting antennas and at least one reception antenna.In addition, the size of transmitting antenna and reception antenna is smaller, then the acquisition precision of biometric information is higher, but it is also bigger to prepare difficulty, therefore, considers, the transmitting antenna and reception antenna are preferred to use MEMS technology and are fabricated by, and size is in nanometer to micrometer range.In a word, shape, size, ratio and the arrangement mode of the transmitting antenna and reception antenna have multiple choices, and the present invention can not be exhaustive.
The biometric information acquisition method of the present invention comprises the following steps:
A) transmitting antenna realizes the wave beam electric scanning to position where biometric information to wireless signal of the position transmitting with a variety of phases and/or frequency where biometric information.In the present embodiment, the biometric information to be gathered is fingerprint ridge line, pore, capillary, bone etc., position where the biometric information is finger print position, and the mode of the wave beam electric scanning can mutually be swept, sweep frequently, phase/mutually sweeping or phase/is swept, concrete meaning is as described above frequently;
B) wireless signal of a variety of phases and/or frequency penetrates and multiple reflected signals for being loaded with different depth biometric information is produced after finger epidermis and skin corium, and the multiple reflected signal for being loaded with different depth biometric information can be processed into 3-D view.Specifically, the frequency that the transmitting antenna sends wireless signal is 1MHz ~ 5GHz, the biometric information being present in finger epidermis and skin corium can be detected, such as the crest 11 and trough 12, fine hair hole, capillary or bone of fingerprint ridge line;
C) the multiple reflected signal for being loaded with different depth biometric information is received by reception antenna.
Preferably, in addition to step d:Multiple reflected signals for being loaded with different depth biometric information that reception antenna is received are transmitted to graphics processing unit, having abundant details and be difficult to imitated 3-D view including fingerprint ridge line, fine hair hole, capillary, bone is processed into by graphics processing unit, prevents the forgery behavior of the biometric informations such as false fingerprint, fingerprint film.
It should be noted that, due to the uniqueness of fingerprint, therefore the fingerprint identification function of superhigh precision can be realized when the present invention is applied to finger print position, but the present invention still can apply to other positions of organism surface, for gathering the image informations such as skin lines, pore, blood vessel, bone, rough biological information identification is realized.
In addition, all accompanying drawings of the present invention are only the simple schematic diagrames that biometric information gathers module, it is existing structure for other structures unrelated with inventive point only to clearly describe this programme structure related to inventive point, not embodiment or only realizational portion in the accompanying drawings.
In a word, preferred embodiments of the present invention are these are only, are not intended to limit the scope of the present invention, within the scope of the present invention, the equivalents or modification made to the present invention should be included in the scope of the protection.
Claims (13)
1. a kind of phased array biometric information gathers module, it is characterised in that:Including multiple transmitting antennas and at least one reception antenna, the multiple transmitting antenna is used to send multi-frequency and/or the wireless signal of phase, multiple reflected signals for being loaded with different depth biometric information are produced after wave beam electric scanning, position where the wireless signal penetrates biometric information are carried out to position where biometric information;The reception antenna is used to receive multiple reflected signals for being loaded with different depth biometric information, and the multiple reflected signal for being loaded with different depth biometric information can be processed into 3-D view.
2. a kind of phased array biometric information collection module according to claim 1, it is characterised in that:The biometric information is the one or more in fingerprint, pore, capillary, bone.
3. a kind of phased array biometric information collection module according to claim 1 or 2, it is characterised in that:The phased array biometric information collection module also includes the wireless signal generating unit for being used to input multi-frequency and/or phase wireless signal to transmitting antenna, the wireless signal generating unit is made up of wireless signal generator and controller, the controller is connected between wireless signal generator and transmitting antenna, phase and/or frequency for adjusting wireless input signal.
4. a kind of phased array biometric information collection module according to claim 3, it is characterised in that:The number of the controller is 1, and multiple transmitting antennas share same controller;Or the number of the controller is equal to the number of transmitting antenna, each transmitting antenna configures a controller.
5. a kind of phased array biometric information collection module according to claim 1 or 2, it is characterised in that:The phased array biomedical information acquisition module also includes the graphics processing unit being connected with reception antenna, and multiple reflected signals for being loaded with different depth biometric information for reception antenna to be received are processed into 3-D view.
6. a kind of phased array biometric information collection module according to claim 1 or 2, it is characterised in that:The transmitting antenna and reception antenna are aligned in the linear array in one-dimensional square;Or, the planar array of transmitting antenna and the reception antenna arrangement in the two-dimensional direction;Or, the transmitting antenna and reception antenna are aligned in the conformal array on curve or curved surface.
7. a kind of phased array biometric information collection module according to claim 1 or 2, it is characterised in that:The number ratio of the transmitting antenna and reception antenna is 1:1、2:1 or 1:2.
8. a kind of phased array biometric information collection module according to claim 1 or 2, it is characterised in that:The pattern of the transmitting antenna and the reception antenna can be triangle, square, rhombus, rectangle, regular hexagon, circle or ellipse.
9. a kind of phased array biometric information collection module according to claim 1 or 2, it is characterised in that:The frequency for the wireless signal that the transmitting antenna is sent is between 1MHz ~ 5GHz;The mode of the wave beam electric scanning be mutually sweep, sweep frequently, phase/mutually sweeping or phase/is swept frequently.
10. a kind of phased array biometric information acquisition method, it is characterised in that:Comprise the following steps:A) transmitting antenna in phased array radiator realizes the wave beam electric scanning to position where biometric information to a variety of wireless signals with out of phase and/or frequency of position transmitting where biometric information;B) multiple reflected signals for being loaded with different depth biometric information are produced behind position where the wireless signal of a variety of phases and/or frequency penetrates biometric information, the multiple reflected signal for being loaded with different depth biometric information can be processed into 3-D view;C) the multiple reflected signal for being loaded with different depth biometric information is received by reception antenna.
11. a kind of phased array biometric information acquisition method according to claim 10, it is characterised in that:Also include step d:Multiple reflected signals for being loaded with different depth biometric information that reception antenna is received are transmitted to graphics processing unit, and 3-D view is processed into by graphics processing unit.
12. a kind of phased array biometric information acquisition method according to claim 10 or 11, it is characterised in that:The biometric information is the one or more in fingerprint, fine hair hole, capillary, bone.
13. a kind of phased array biometric information acquisition method according to claim 10 or 11, it is characterised in that:The frequency range for the wireless signal that the transmitting antenna is sent is between 1MHz ~ 5GHz;The mode of the wave beam electric scanning be mutually sweep, sweep frequently, phase/mutually sweeping or phase/is swept frequently.
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