CN206805565U - A kind of vein identification device - Google Patents
A kind of vein identification device Download PDFInfo
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- CN206805565U CN206805565U CN201720295695.XU CN201720295695U CN206805565U CN 206805565 U CN206805565 U CN 206805565U CN 201720295695 U CN201720295695 U CN 201720295695U CN 206805565 U CN206805565 U CN 206805565U
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Abstract
A kind of vein identification device, it is related to a kind of vein identification technology, including housing, finger groove and radiation source module and image-forming module are provided with described housing, it is characterized in that, identification enhancing module is additionally provided with described housing, described identification enhancing module includes the one or more of finger positioner, irradiation intensifier and image enhancement device.Compared with prior art, the present apparatus has identification enhancing module, identification enhancing module includes the one or more of finger positioner, irradiation intensifier and image enhancement device, finger positioner is by structure light irradiation finger tip and refers to the last angle of pitch and deviation angle for measuring finger, obtains good finger position information；Intensifier is irradiated by condenser by light-resource fousing to finger, obtains good picture quality；Image enhancement device obtains enough marginal informations and longer light path by catoptric arrangement, obtains good image contrast.
Description
Technical field
A kind of vein identification technology is the utility model is related to, especially one kind refers to vein identification technology.
Background technology
Finger vena identification is biometrics identification technology of new generation, and its main advantage is that vein is concealed in body
Portion, it is not easy to steal and replicates, and only live body just has vein.Relative to the traditional identity authentication technique such as fingerprint, its security performance
It is higher, before safety door inhibition, credit card validation, medical verification, criminal's identification and file administration etc. have huge application
Scape.Finger venous image obtains when passing through finger according near infrared ray part ray by mechanism that hemochrome absorbs so as to realize hand
Refer to the display of vein image.
In this specific identification process, because finger thickness, vein thickness difference are obvious, and finger swings and caused
Image-forming range change, and be imaged when vein train of thought it is big by the interference of muscle, bone and other noises, the error having influence on can be led
Cause finger venous image definition low, uneven.And the too poor vein image of quality is not easy to extract feature, has a strong impact on follow-up spy
Levy the performance of identification.Therefore, how in identification to ensure that finger image-forming range is stable, the intensity of light source is stably one and new asked
Topic.
The content of the invention
The utility model is directed to deficiency of the prior art, there is provided a kind of vein identification device, the present apparatus have identification
Strengthening module, identification enhancing module includes the one or more of finger positioner, irradiation intensifier and image enhancement device,
Finger positioner is by structure light irradiation finger tip and refers to the last angle of pitch and deviation angle for measuring finger, obtains good finger position
Confidence ceases；Intensifier is irradiated by condenser by light-resource fousing to finger, obtains good picture quality；Image enhancement fills
Put and enough marginal informations and longer light path are obtained by catoptric arrangement, obtain good image contrast.
In order to solve the above-mentioned technical problem, the utility model is addressed by following technical proposals：A kind of hand vein recognition
Device, including housing, are provided with finger groove and radiation source module and image-forming module in described housing, in described housing
Identification enhancing module is additionally provided with, described identification enhancing module includes finger positioner, irradiation intensifier and imaging and increased
The one or more of intensity device.
In above-mentioned technical proposal, it is preferred that described finger positioner includes reflection source group, described reflection source
Group includes being provided with relatively described finger groove tip portion and refers to the positioned light source of last part, and described positioned light source is to described
Near infrared light is irradiated in finger groove direction.
In above-mentioned technical proposal, it is preferred that the lens to form structure light are provided with above described positioned light source, it is described fixed
The light source near infrared light that irradiates in position is by lens forming structure light irradiation to finger groove.
In above-mentioned technical proposal, it is preferred that described irradiation intensifier includes condenser, described radiation source module
Irradiated by the condenser to finger groove direction.
In above-mentioned technical proposal, it is preferred that described radiation source module includes LED array, and described LED array passes through
The condenser irradiates to finger groove direction.
In above-mentioned technical proposal, it is preferred that described image enhancement device includes first secondary mirror, described first secondary reflection
Mirror is arranged on the lower section of the finger groove, has 45 degree of angles between described first secondary mirror and described finger groove, described
Image-forming module towards described speculum.
In above-mentioned technical proposal, it is preferred that described image enhancement device includes first secondary mirror and secondary reflection mirror, institute
The first secondary mirror stated is arranged on the lower section of the finger groove, has 53 between described first secondary mirror and described finger groove
Spend angle, the secondary reflection mirror be arranged on it is described just above secondary mirror and with described first mirror parallel, it is described
Image-forming module faces described secondary reflection mirror.
In above-mentioned technical proposal, it is preferred that described image-forming module includes camera device and infrared fileter.
In above-mentioned technical proposal, it is preferred that the Micro-touch switch being engaged with finger tip is provided with described finger groove, it is described
Described radiation source module, described image-forming module and the described identification enhancing module of Micro-touch switch control open.
In above-mentioned technical proposal, it is preferred that vibrational feedback device is additionally provided with described Micro-touch switch.
The cardinal principle for referring to hand vein recognition is part ray when near infrared ray passes through finger by near infrared light finger
Absorbed by hemochrome so as to realize the display of finger venous image, be subsequently identified according to vein image.Shone referring to vein
Finger needs that forbids to be placed on suitable image distance and object distance position when penetrating, and could so obtain preferable image quality and finger
Marginal information, the interference for excluding veiling glare, so as to quickly accurately be identified.In the identification process of reality, whether finger moves
Whether dynamic, image distance and object distance properly seriously affect the accuracy and speed of identification.In the prior art in order to overcome this shortcoming past
Toward complicated cumbersome algorithm can be designed, the image of high quality is obtained by largely calculating, but these complicated algorithms can only
It is relative to improve the precision of images, influence of these problems to image quality can not be prevented completely, while error rate is also higher.
The utility model is then the increase identification enhancing module in vein identification device, and identification enhancing module is determined including finger
The one or more of position device, irradiation intensifier and image enhancement device.The effect of finger positioner is true in shooting
Determine the positional information of finger, now the positional information of finger is exactly known parameter, in identification without carrying out complicated calculating
Relative positional information with regard to finger can be obtained, location parameter can be introduced directly into thereafter space conversion is carried out to image, so
Not only can significantly optimized algorithm, enhancing recognition capability, also overcome influence of the finger movement to accuracy of identification.This practicality is new
Finger positioner in type includes being arranged on the positioned light source with camera device homonymy, and positioned light source is divided into two parts, respectively
It is directed at fingertip location and refers to last position.In actual use, after finger is inserted into finger groove, radiation source module opens first
It is dynamic, finger orientation is irradiated, then radiation source module is closed rapidly, and locating module starts also to enter finger orientation at once
Row irradiation.This irradiation time interval twice is very of short duration, of short duration to capture the two different light simultaneously to camera device
Source signal and finger have little time to make displacement within this time.The image that now camera device is obtained just does not refer to vein only
Information also have finger positional information, so as to more accurately be rapidly performed by identifying.
It can also set to form the lens of structure light on positioned light source, if it can not form the lens of structure light
What positioned light source was irradiated to finger is divergent light source, and the angle of pitch that camera device can only obtain finger fingertip and refer between end is believed
Breath.If with the lens that can form structure light, positioned light source directive hand refers to the structure light with given shape,
This structure light it is generally rectangular in shape, be radiated at the change occurred on finger by structure light, camera device not only can be with
Skew angle information can also be obtained by obtaining pitching angle information, can preferably be obtained to finger edge feature information so that be calculated
It is more accurate.
Irradiation intensifier includes condenser, and condenser is arranged between LED array and finger groove, condenser and finger groove
Distance is needed by calculating, and optimal distance is that the near infrared light light source irradiated can be allowed in LED array to assemble after condenser
Onto finger groove.It can so allow light source to gather and influence of the contrast to finger is excluded on finger, while finger can also be strengthened
The display effect at edge, make image quality higher.
Image enhancement device could be arranged to primary event and secondary reflection, and just secondary mirror is needed in primary event,
First secondary mirror is arranged on the lower section of finger groove, and just has 45 degree of angles between secondary mirror and finger groove, draws during identification
Face enters back into image-forming module after first secondary mirror, so that the Distance Shortened of finger lower end and image-forming module, allows dress
Put volume does not influence image quality while can reducing.But image-forming module can not be placed into finger groove just during primary event
Lower section is, it is necessary to other space.
Just secondary mirror and secondary reflection mirror are needed during secondary reflection, is just had at this moment between secondary mirror and finger groove
53 degree of angles, both have 37 degree of angle, secondary reflection mirror and a first mirror parallel between horizontal plane, imaging device towards
Secondary reflection mirror and parallel with finger groove.Now just the light path of secondary mirror finger in one's hands is l1, first secondary mirror to secondary counter
The light path for penetrating mirror is l2, and the light path of secondary reflection mirror to imaging device is l3, and the distance of finger to imaging device is s.Normal
45 degree of angles in, total optical path with apart from equal, and the s in the utility model<L1+ l2+ l3, greatly shorten whole dress
The length put, while and can ensures the contrast at edge under 37 degree of angle, it is ensured that finger edge under 3-4 cm widths
Definition.If angle during secondary reflection causes visual field to diminish in too small or conference excessively, the contrast at edge extremely declines,
Therefore at 37 degree, whole device can obtain suitable light path and visual field.
Compared with prior art, the beneficial effects of the utility model are：The present apparatus has identification enhancing module, identification enhancing
Module includes the one or more of finger positioner, irradiation intensifier and image enhancement device, and finger positioner passes through
Structure light irradiation finger tip and finger end measure the angle of pitch and deviation angle of finger, obtain good finger position information；Irradiation enhancing
Device, by light-resource fousing to finger, obtains good picture quality by condenser；Image enhancement device passes through catoptric arrangement
Enough marginal informations and longer light path are obtained, obtains good image contrast.
Brief description of the drawings
Fig. 1 is the schematic side view of the utility model embodiment 1.
Fig. 2 is the schematic side view of the utility model embodiment 2.
Fig. 3 is the schematic side view of the utility model embodiment 3.
Fig. 4 is the schematic diagram of the utility model embodiment 4.
Fig. 5 is the schematic diagram of the utility model embodiment 5.
Fig. 6 is the schematic side view of the utility model embodiment 6.
Fig. 7 is the schematic elevation view of the utility model embodiment 6.
Fig. 8 is the schematic side view of the utility model embodiment 7.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Embodiment 1, as shown in figure 1, a kind of vein identification device, including housing 1, the described internal upper part of housing 1 are provided with
Finger groove 2, the top of finger groove 2 is provided with radiation source module, image-forming module and finger are provided with below finger groove
Positioner.Described radiation source module includes LED array 31, and several evenly distributed LED are provided with LED array 31
Lamp, described LED array 31 are irradiated to the direction of finger groove 2.Described finger positioner includes reflection source group, and described is anti-
Penetrating light source group is included towards the positioned light source 51 in the tip portion of finger groove 2 and the last part of finger, described positioned light source 51
Near infrared light is irradiated to the described direction of finger groove 2.Described image-forming module includes CMOS cameras 41 and infrared fileter 42, institute
The infrared fileter 42 stated is between described CMOS cameras 41 and described finger groove 2.Also there is hand vein recognition in housing 1
System, vein recognition system include processor, memory, picture recognition module, network connecting module etc..Obtained from CMOS cameras 41
Location drawing picture and vein image is obtained all to handle by vein recognition system.Vein recognition system can also pass through network connection mould
Block connected network carries out networking work or can also worked independently.
In use, finger 100 has been inserted into finger groove 2, the positioned light source 51 of finger positioner starts this moment, point
Tip portion and the last partial illumination infrared light of finger not to finger 100, the location drawing picture that CMOS cameras 41 gather now obtain hand
Refer to 100 positional information, positional information in the present embodiment only includes the position letter drawn according to the angle of pitch of finger 100
Breath.Finger positioner is then shut off, starts radiation source module, the open and close time between both is very fast, allows
LED array 31 is irradiated to finger 100, and light-source brightness is adjusted in irradiation process, makes vein imaging clear.Then hand vein recognition system
System processing image carries out feature extraction, subsequently according to pre-set threshold value, and feeds back matching result.The progress one by one from Sample Storehouse
Match somebody with somebody.
Then the flow of images match is entered the vein image of acquisition for the angle of pitch is calculated according to location drawing picture first
The appropriate spatial alternation of row, subsequently carries out multimode identification to the image after conversion.Idiographic flow is：1st, carried according to location drawing picture
Take finger elevation information, finger mean breadth and each regional luminance information.2nd, noise reduction is carried out to vein image, then according to step
Information in rapid 1 carries out spatial alternation to vein image.3rd, vein image is normalized, makes size suitable.4th, it is right
Vein image carries out FFT and obtains characteristic value.5th, template matches are carried out, select similarity big according to the matching way of decision tree
In the result of threshold values, then more each similarity degree, optimum is obtained.
Embodiment 2, as shown in Fig. 2 a kind of vein identification device, including housing 1, the described internal upper part of housing 1 are provided with
Finger groove 2, the top of finger groove 2 is provided with radiation source module, image-forming module and finger are provided with below finger groove
Positioner.Described radiation source module includes LED array 31, and several evenly distributed LED are provided with LED array 31
Lamp, described LED array 31 are irradiated to the direction of finger groove 2.Described finger positioner includes reflection source group, and described is anti-
Penetrating light source group includes being arranged on the tip portion of finger groove 2 and refers to the positioned light source 51 of last part, described positioned light source 51
Top is provided with the lens 52 to form structure light, and the near infrared light that the positioned light source 51 irradiates forms structure by lens 52
Illumination directive finger groove 2.Described image-forming module includes CMOS cameras 41 and infrared fileter 42, described infrared fileter 42
Between described CMOS cameras 41 and described finger groove 2.Also there is vein recognition system, hand vein recognition system in housing 1
System includes processor, memory, picture recognition module, network connecting module etc..From CMOS cameras 41 obtain location drawing picture and
Vein image is all handled by vein recognition system.Vein recognition system can also be carried out by network connecting module connected network
Networking work can also work independently.
In use, finger 100 has been inserted into finger groove 2, the positioned light source 51 of locating module starts this moment, respectively to
The tip portion and the last partial illumination infrared light of finger of finger 100, positioned light source 51 form structure light in irradiation using lens 52,
The location drawing picture that CMOS cameras 41 gather now obtains the positional information of finger 100, and positional information in the present embodiment includes
The positional information drawn according to the angle of pitch of finger 100, and the finger edge information that deviation angle is drawn.Finger is then shut off to determine
Position device, starts radiation source module, and the open and close time between both is very fast, allows LED array 31 to finger 100
Irradiation, light-source brightness is adjusted in irradiation process, makes vein imaging clear.Then vein recognition system processing image carries out feature
Extraction, subsequently according to pre-set threshold value, is matched one by one from Sample Storehouse.And feed back matching result.
Then the flow of images match is entered the vein image of acquisition for the angle of pitch is calculated according to location drawing picture first
The appropriate spatial alternation of row, subsequently carries out multimode identification to the image after conversion.Idiographic flow is：1st, carried according to location drawing picture
Take finger elevation information, finger edge information, finger mean breadth and each regional luminance information.2nd, vein image is dropped
Make an uproar, spatial alternation is then carried out to vein image according to the information in step 1.3rd, vein image is normalized, made
Size is suitable.4th, FFT is carried out to vein image and obtains characteristic value.5th, template matches are carried out, according to the match party of decision tree
Formula selection similarity is more than the result of threshold values, then more each similarity degree, obtains optimum.
Embodiment 3, as shown in figure 3, a kind of vein identification device, including housing 1, the described internal upper part of housing 1 are provided with
Finger groove 2, radiation source module and irradiation intensifier are provided with the top of finger groove 2, is provided with below finger groove
Image-forming module and finger positioner.Described radiation source module includes LED array 31, and described irradiation intensifier includes
Condenser 32, several evenly distributed LEDs is provided with LED array 31, described LED array 31 passes through the condenser
32 irradiate to the direction of finger groove 2.Described finger positioner includes reflection source group, and described reflection source group includes setting
Positioned light source 51 in the tip portion of finger groove 2 and the last part of finger, the described top of positioned light source 51 are provided with to form knot
The lens 52 of structure light, the near infrared light that the positioned light source 51 irradiates form structure light irradiation to finger groove 2 by lens 52.
Described image-forming module includes CMOS cameras 41 and infrared fileter 42, and described infrared fileter 42 is in described CMOS cameras
Between 41 and described finger groove 2.Also there is vein recognition system in housing 1, vein recognition system includes processor, storage
Device, picture recognition module, network connecting module etc..Location drawing picture and vein image, which are obtained, from CMOS cameras 41 all passes through vein
Identifying system processing.Vein recognition system can also be carried out networking work by network connecting module connected network or can also
Work independently.
In use, finger 100 has been inserted into finger groove 2, the positioned light source 51 of locating module starts this moment, respectively to
The tip portion and the last partial illumination infrared light of finger of finger 100, positioned light source 51 form structure light in irradiation using lens 52,
The location drawing picture that CMOS cameras 41 gather now obtains the positional information of finger 100, and positional information in the present embodiment includes
The positional information drawn according to the angle of pitch of finger 100, and the finger edge information that deviation angle is drawn.It is then shut off positioning mould
Block, start radiation source module, the open and close time between both is very fast, allows LED array 31 to be shone to finger 100
Penetrate, light source can be D type optically focused rods by condenser 32, condenser 32 when LED array 31 is irradiated, and radiation source passes through condenser
With regard to light-resource fousing can be allowed to obtain more preferable display effect on finger 100 after 32.It is bright that light source can also be adjusted in irradiation process
Degree, makes vein imaging clear.Then vein recognition system processing image carries out feature extraction, subsequently according to pre-set threshold value, and
Matching result is fed back, the flow of images match is same as Example 2.
Embodiment 4, as shown in figure 4, a kind of vein identification device, in addition to image enhancement device, image enhancement device bag
Include just secondary mirror 44, described first secondary mirror 44 and be arranged on the lower section of the finger groove 2, described first secondary mirror 44 with
There are 45 degree of angles between described finger groove 2, both just there is 45 degree of angle between secondary mirror 44 and horizontal plane, it is described
Image-forming module is towards described speculum.Remaining device is same as Example 3 in the present embodiment.
In use, finger 100 has been inserted into finger groove 2, the positioned light source of locating module starts this moment, respectively to hand
Refer to 100 tip portion and the last partial illumination infrared light of finger, positioned light source utilizes lens forming structure light, CMOS phases in irradiation
The location drawing picture that machine 41 gathers now obtains the positional information of finger 100, and positional information in the present embodiment is included according to hand
Refer to the positional information that 100 angle of pitch is drawn, and the finger edge information that deviation angle is drawn.Locating module is then shut off, is opened
Dynamic radiation source module, the open and close time between both is very fast, allows LED array to be irradiated to finger 100, LED battle arrays
For light source by condenser, condenser can be D type optically focused rods during row irradiation, radiation source by after condenser with regard to that light source can be allowed to gather
It is burnt on finger 100, obtain more preferable display effect.Imaging passes through first secondary mirror caused by positioned light source and radiation source
44 are reflexed in CMOS cameras 41, and the volume of whole device, while not shadow can be so reduced in the case where not shortening light path
Ring image quality.Light-source brightness can also be adjusted in irradiation process, makes vein imaging clear.Then vein recognition system is handled
Image carries out feature extraction, subsequently according to pre-set threshold value, and feeds back matching result, flow and the phase of embodiment 2 of images match
Together.
Embodiment 5, as shown in figure 5, a kind of vein identification device, in addition to image enhancement device, described image enhancement
Device includes first secondary mirror 44 and secondary reflection mirror 45, and described first secondary mirror 44 is arranged on the lower section of the finger groove 2,
There are 53 degree of angles between described first secondary mirror 44 and described finger groove 2, both there is 37 degree of angle, institute with horizontal plane
State secondary reflection mirror 45 and be arranged on just secondary mirror 44 top and the imaging parallel, described with described first secondary mirror 45
Module faces are to described secondary reflection mirror.Remaining device is same as Example 3 in the present embodiment.
In use, finger 100 has been inserted into finger groove 2, the positioned light source of locating module starts this moment, respectively to hand
Refer to 100 tip portion and the last partial illumination infrared light of finger, positioned light source utilizes lens forming structure light, CMOS phases in irradiation
The location drawing picture of machine collection now obtains the positional information of finger 100, and positional information in the present embodiment is included according to finger
The positional information that 100 angle of pitch is drawn, and the finger edge information that deviation angle is drawn.Locating module is then shut off, is started
Radiation source module, the open and close time between both is very fast, allows LED array to be irradiated to finger 100, LED array
Light source is by condenser during irradiation, and condenser can be D type optically focused rods, and radiation source after condenser by that just can allow light-resource fousing
Onto finger 100, more preferable display effect is obtained.Imaging passes through first secondary mirror 44 caused by positioned light source and radiation source
Reflex in secondary reflection mirror 45, then reflexed to from secondary reflection mirror 45 in CMOS cameras 41, so that total optical path exceedes
CMOS cameras 41 arrive the air line distance of finger 100, can obtain preferably imaging figure, at the same just secondary mirror 44 with it is horizontal
Face is in 37 degree of angles, and the picture contrast of finger frontside edge is still good under this angle, can't extend shadow because of total optical path
Ring the image quality of finger frontside edge.Light-source brightness can also be adjusted in irradiation process, makes vein imaging clear.Then it is quiet
Arteries and veins identifying system processing image carries out feature extraction, subsequently according to pre-set threshold value, and feeds back matching result, the stream of images match
Journey is same as Example 2.
Embodiment 6, as shown in Figure 6 and Figure 7, a kind of vein identification device, including housing 1, the described internal upper part of housing 1 are set
Finger groove 2 is equipped with, radiation source module and irradiation intensifier are provided with the top of finger groove 2, is set in the lower section of finger groove 2
It is equipped with image-forming module and finger positioner.Described radiation source module includes LED array 31, is provided with LED array 31
Several evenly distributed LEDs, described irradiation intensifier include condenser 32, and described LED array 31 is by described
Condenser 32 irradiates to the direction of finger groove 2.Described finger positioner includes reflection source group, described reflection source group bag
The positioned light source 51 for being arranged on the tip portion of finger groove 2 and referring to last part is included, the described top of positioned light source 51 is provided with
The lens 52 of structure light are formed, the near infrared light that the positioned light source 51 irradiates forms structure light irradiation to hand by lens 52
Refer to groove 2.Described image-forming module includes CMOS cameras 41 and infrared fileter 42, and described infrared fileter 42 is described
2 are provided with the finger support 6 coordinated with finger in finger groove described between CMOS cameras 41 and described finger groove 2, refer to and are set in support 6
Be equipped with the Micro-touch switch 61 being engaged with finger tip, described Micro-touch switch 61 control described radiation source module, it is described into
As module and the unlatching of described finger positioner, vibrational feedback device is additionally provided with Micro-touch switch 61.Also have in housing 1
There is vein recognition system, vein recognition system includes processor, memory, picture recognition module, network connecting module etc..From
CMOS cameras 41 obtain location drawing picture and vein image and all handled by vein recognition system.Vein recognition system can also lead to
Network connecting module connected network is crossed to carry out networking work or can also work independently.
In use, finger 100 has been inserted into finger groove 2, only opened when finger 100 touches the micro-touch in finger support 6
Whole device just starts to start after closing 61, and otherwise whole device is in the holding state of energy-conservation.Moreover when finger 100 contacts
During Micro-touch switch 61, the vibrational feedback device in Micro-touch switch 61 is given finger 100 and fed back, and tells user's finger 100 to place
Correct whole system is opened.Micro-touch switch 61 allows the positioned light source 51 of locating module to start first after being touched, respectively to finger
100 tip portion and the last partial illumination infrared light of finger, positioned light source 51 form structure light, CMOS in irradiation using lens 52
The location drawing picture that camera 41 gathers now obtains the positional information of finger 100, and positional information in the present embodiment includes basis
The positional information that the angle of pitch of finger 100 is drawn, and the finger edge information that deviation angle is drawn.It is then shut off locating module,
Starting radiation source module, the open and close time between both is very fast, allows LED array 31 to be irradiated to finger 100,
Light source can be D type optically focused rods by condenser 32, condenser 32 when LED array 31 is irradiated, and radiation source passes through condenser 32
Just wasteland can be allowed to focus on finger 100 afterwards, obtain more preferable display effect.It is bright that light source can also be adjusted in irradiation process
Degree, makes vein imaging clear.Then vein recognition system processing image carries out feature extraction, subsequently according to pre-set threshold value, and
Matching result is fed back, the flow of images match is same as Example 2.
Embodiment 7, as shown in figure 8, a kind of vein identification device, including housing 1, bottom is provided with described housing 1
Finger groove 2, the lower section of finger groove 2 is provided with radiation source module, image-forming module and finger are provided with above finger groove
Positioner.Described radiation source module includes LED array 31, and several evenly distributed LED are provided with LED array 31
Lamp, described LED array 31 are irradiated to the direction of finger groove 2.Described finger positioner includes reflection source group, and described is anti-
Penetrating light source group includes being arranged on the tip portion of finger groove 2 and refers to the positioned light source 51 of last part, described positioned light source 51
Top is provided with the lens 52 to form structure light, and the near infrared light that the positioned light source 51 irradiates forms structure by lens 52
Illumination directive finger groove 2.Described image-forming module includes CMOS cameras 41 and infrared fileter 42, described infrared fileter 42
Between described CMOS cameras 41 and described finger groove 2.Position just phase of this implementation compared to embodiment 1-6 internal modules
Instead, radiation source module is so arranged on bottom, object distance bigger between LED array 31 and finger 100 can be obtained, obtained
The image of better quality.Other constructions of equipment, application method and matching algorithm are consistent with previous embodiment in the present embodiment.
Above-described embodiment is several embodiments of the present utility model, does not include all implementations of the present utility model
Example.The light source of LED in embodiment 1 to 7 in LED array 31 can be that wavelength is near red between 750 mm -940mm
Outer light section, now using the infrared fileter of narrow bandpass.If the LED in LED array 31 uses multispectral light source, need
Using long wave pass filter.Whole device without installing filtration additional again if image-forming module is using infrared CMOS cameras 41
Piece.Can be piezoelectric ceramics, capacitive sensing or mechanical Micro-touch switch in selection of the embodiment 6 to Micro-touch switch, this will
With reference to benefiting from life-span and cost consideration.Application field of the present utility model is extensive, cannot be only used for door lock, gate inhibition, registers and examine
The equipment such as diligent instrument, gate, it can be also used in medical treatment, police service etc..
Claims (10)
1. a kind of vein identification device, including housing（1）, described housing（1）Inside it is provided with finger groove（2）And radiation source
Module and image-forming module, it is characterized in that, described housing（1）Inside it is additionally provided with identification enhancing module, described identification enhancing mould
Block includes the one or more of finger positioner, irradiation intensifier and image enhancement device.
2. a kind of vein identification device according to claim 1, it is characterized in that, described finger positioner includes reflection
Light source group, described reflection source group include being provided with relatively described finger groove（2）Tip portion and the positioning light for referring to last part
Source（51）, described positioned light source（51）To described finger groove（2）Near infrared light is irradiated in direction.
3. a kind of vein identification device according to claim 2, it is characterized in that, described positioned light source（51）Top is set
Have to form the lens of structure light（52）, the positioned light source（51）The near infrared light irradiated passes through lens（52）Form structure light
Irradiate to finger groove（2）.
4. a kind of vein identification device according to claim 1, it is characterized in that, described irradiation intensifier includes optically focused
Mirror（32）, described radiation source module passes through the condenser（32）To finger groove（2）Direction is irradiated.
5. a kind of vein identification device according to claim 4, it is characterized in that, described radiation source module includes LED
Array（31）, described LED array（31）Pass through the condenser（32）To finger groove（2）Direction is irradiated.
6. a kind of vein identification device according to claim 1, it is characterized in that, described image enhancement device includes first
Speculum（44）, described first secondary mirror is arranged on the finger groove（2）Lower section, described first secondary mirror（44）With institute
The finger groove stated（2）Between there are 45 degree of angles, described image-forming module is towards described first secondary mirror（44）.
7. a kind of vein identification device according to claim 1, it is characterized in that, described image enhancement device includes first
Speculum（44）And secondary reflection mirror（45）, described first secondary mirror（44）It is arranged on the finger groove（2）Lower section, it is described
First secondary mirror（44）With described finger groove（2）Between there is 53 degree of angles, the secondary reflection mirror（45）It is arranged on institute
State just secondary mirror（44）Top and with described first secondary mirror（44）Parallel, described image-forming module is in face of described secondary
Speculum（45）.
8. a kind of vein identification device according to claim 6 or 7, it is characterized in that, described image-forming module includes shooting
Device and infrared fileter（42）.
9. a kind of vein identification device according to claim 1, it is characterized in that, described finger groove（2）Inside be provided with
The Micro-touch switch that finger tip is engaged（61）, described Micro-touch switch（61）The described radiation source module of control, described imaging
Module and described identification enhancing module are opened.
10. a kind of vein identification device according to claim 9, it is characterized in that, described Micro-touch switch（61）On also set
It is equipped with vibrational feedback device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720295695.XU CN206805565U (en) | 2017-03-24 | 2017-03-24 | A kind of vein identification device |
Applications Claiming Priority (1)
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