CN206236109U - Multi-light spectrum palm print Acquisition Instrument - Google Patents
Multi-light spectrum palm print Acquisition Instrument Download PDFInfo
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- CN206236109U CN206236109U CN201620677938.1U CN201620677938U CN206236109U CN 206236109 U CN206236109 U CN 206236109U CN 201620677938 U CN201620677938 U CN 201620677938U CN 206236109 U CN206236109 U CN 206236109U
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- aluminium alloy
- alloy extrusions
- screw mandrel
- stepper motor
- screw
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Abstract
A kind of multi-light spectrum palm print Acquisition Instrument, belongs to collecting device field.The utility model is installed with cylindrical linear rail in frame, stepper motor is fixedly mounted on frame side, the axle of stepper motor is provided with screw mandrel by shaft coupling, screw thread is provided with ball slider on screw mandrel, ball screw slide unit is installed on ball slider, longitudinal screw mandrel is provided with by motor coaxle on ball screw slide unit, screw thread Matching installation has longitudinal ball slider in longitudinal screw mandrel, connecting plate is installed on longitudinal ball slider, stringer aluminium alloy extrusions and row aluminium alloy extrusions are installed on connecting plate, T-shaped iron plate is installed between top aluminium alloy extrusions and triangle joint frame and stringer aluminium alloy extrusions, digital camera is positioned on multispectral lens barrel, installation upright pole section bar is screwed in frame；Upright pole section bar top fixed installation screw mandrel stepper motor, triangle joint frame and Long Irons are installed in upright pole section bar side.The utility model can either more fully covering visible light and infrared range of spectrum, can make again acquisition operations it is simple, efficiently, it is accurate, it is easy to be easily accepted by a user, be easy to popularize in an all-round way and apply.
Description
Technical field
The utility model belongs to collecting device field.
Background technology
Traditional palm print image information collection is usually that palm is placed under single spectroscopic light source irradiation, uses IMAQ
Equipment directly shoots palmprint image.But reflection of the skin of palm of hand to different spectrum is different with absorption characteristic.The skin of the mankind has three
Layer:Epidermis, corium and hypodermis, each layer include the blood and fat of different proportion, and epidermis also contains melanin,
And hypodermis includes vein, the light of different wave length can penetrate different skin layers.In general, wavelength is more long, ray pair
The penetrability of human body skin is stronger, is more readily obtained the information goed deep under skin surface.Under the light irradiation of near-infrared, can
See the information of metacarpus blood vessel, this is palm information unavailable under visible light.Wavelength is shorter, and imaging is more directed to a certain table
Layer, the detailed information for obtaining image is just more rich such that it is able to make full use of the information of the tiny streakline of palm surface.And single light
Palmprint image under spectrum can only include the information of certain level of palm, therefore, the information content of acquisition is small, and information has limitation,
Cause accuracy of identification low.And, when the need of work in terms of many image procossings carries out IMAQ, it is substantially simple
Ground is gathered using the photograph of common mode, the Local map under several enlarged drawings of the same area or different spectrum are needed
During picture, due to being influenceed exactly make regional fit like a glove by condition, the multiple image of acquisition can thus produced
Raw deviation.
The error problem of multiple image is shot for the limitation and the same area that overcome palmprint image under single spectrum,
People have begun to study multi-light spectrum palm print image.Multi-light spectrum palm print image can combine the palmmprint figure under different wave length
Picture, obtains palm information at all levels, so as to bring accuracy rate higher to identification, is applied to wider occasion.Therefore,
In the urgent need to inventing a kind of multi-light spectrum palm print harvester that can gather the palmprint image under multiple spectrum.
At present, people have just just started for the research of multi-light spectrum palm print harvester, although achieve some achievements, but
Still there are problems that a lot.2008, a kind of multi-light spectrum palm print identity authentication method and its special-purpose collection instrument were suggested, this special
With Acquisition Instrument using computer controls are infrared, four kinds of switchings of spectroscopic light source of red, green, blue, spectrum quantity is few, is not enough to covering whole
The spectral region of individual visible ray and near-infrared；The palm of user needs to be fixed by gim peg, poor user experience.It is 2012, a kind of
It is suggested with the high-resolution multi-spectral acquisition system of double Amici Prisms based on mask, this multispectral acquisition system needs to make
It is the spectrum on multiple wavelength by transmitted ray dispersion, in addition it is also necessary to demarcate with Prism spectroscope, apparatus structure is complicated, collection
Process is cumbersome, is unfavorable for promoting the use of for device.2014, a kind of multi-light spectrum palm print picking platform was suggested, this picking platform by
Wood frame and lead screw motor are constituted, and transmission efficiency and precision are low, it is difficult to reach control camera and multispectral lens barrel accurately fixed
The purpose of position.
The content of the invention
The purpose of this utility model is to provide one kind and can automatically and accurately shoot palm different zones, and makes same area
The multi-light spectrum palm print image capture instrument that several multispectral images of domain fit like a glove.
The utility model is installed with cylindrical linear rail in frame, and stepper motor is fixedly mounted on frame side,
The axle of stepper motor is provided with screw mandrel by shaft coupling, and the screw mandrel other end is arranged on frame opposite side by support, on screw mandrel
Screw thread is provided with ball slider, and ball screw slide unit is provided with ball slider, and ball screw slide unit is mounted below and cylinder
The opening linear slide unit of line slideway matching, longitudinal screw mandrel is provided with ball screw slide unit by motor coaxle, vertical
There is longitudinal ball slider to screw thread Matching installation on screw mandrel, connecting plate be provided with by Philip's head screw on longitudinal ball slider,
Stringer aluminium alloy extrusions and row aluminium alloy extrusions are installed on connecting plate, row aluminium alloy extrusions is arranged on multispectral lens barrel
On, top aluminium alloy extrusions, the aluminium alloy extrusions and three at top are provided with by triangle joint frame on stringer aluminium alloy extrusions
T-shaped iron plate is installed between angle link and stringer aluminium alloy extrusions, iron wire one end is fixed on T-shaped iron plate, the other end
The circular lower edge for being enclosed within multispectral lens barrel is surrounded, digital camera is positioned on multispectral lens barrel, and in digital camera
The heart is aligned with the center of multispectral lens barrel；Installation upright pole section bar is screwed in frame；The fixed peace in upright pole section bar top
Dress screw mandrel stepper motor, triangle joint frame and Long Irons are installed in upright pole section bar side；Connected by screw thread on the screw mandrel of stepper motor
Transmission bracket is connected to, transmission bracket bottom is fixedly connected semi-circular plate, and voltage-stabilized power supply is connected by wire with three drivers, installed
The personal computer for having motion control card is connected by signal transmssion line with three drivers.
The utility model can either more fully covering visible light and infrared range of spectrum, acquisition operations letter can be made again
It is single, efficient, accurate, it is easy to be easily accepted by a user, be easy to popularize in an all-round way and apply.The utility model reasonable in design, user
Just, the palmprint image under white light, feux rouges, gold-tinted, green glow, blue light, six kinds of wave spectrums of purple light can be collected；What is collected is more
Spectrum palmprint image is amplified by lens group, and the palmprint image of shooting more direct than ordinary digital camera is apparent；Collection
Digital camera can be moved with multispectral camera lens under the drive of ball screw slide unit during image, can be with automatic data collection to palmar hand
The palmprint image of optional position；Shine the multiple image for taking to fit like a glove, error will not be produced.
Brief description of the drawings
Fig. 1 is the utility model structural upright view；
In figure：1. aluminium alloy extrusions, 2. cylindrical linear rail, 3. T-shaped screw, 4. stepper motor, 5. shaft joint, 6.
Screw mandrel, 7. ball slider, be 8. open linear slide unit, 9. ball screw slide unit, 10. connecting plate, 11. Philip's head screws,
12. stringer aluminium alloy extrusions, 13. row aluminium alloy extrusions, 14. top aluminium alloy extrusions, 15. triangle joint framves, 16. T
Sections plate, 17. iron wires, 18. multispectral lens barrels, 19. digital cameras, 20. upright pole section bars, 21. triangle joint framves, 22.
Stepper motor, 23. Long Irons, 24. transmission brackets, 25. semi-circular plates；
Fig. 2 is the utility model polycrystalline substance schematic diagram；
Fig. 3 is the utility model all parts line schematic diagram.In figure：26. voltage-stabilized power supplies, 27. are provided with motion control
The personal computer of card.
Specific embodiment
The utility model is installed with cylindrical linear rail 2 in frame 1, and stepper motor 4 is fixedly mounted on frame 1 one
Side, the axle of stepper motor 4 is provided with screw mandrel 6 by shaft coupling 5, and the other end of screw mandrel 6 is arranged on the opposite side of frame 1 by support,
Screw thread is provided with ball slider 7 on screw mandrel 6, ball screw slide unit 9 is provided with ball slider 7, below ball screw slide unit 9
The opening linear slide unit 8 matched with cylindrical linear rail 2 is installed, is coaxially pacified by motor 93 on ball screw slide unit 9
Equipped with longitudinal screw mandrel 91, screw thread Matching installation has longitudinal ball slider 92 in longitudinal screw mandrel 91, on longitudinal ball slider 92
Connecting plate 10 is provided with by Philip's head screw 11, stringer aluminium alloy extrusions 12 and row aluminium alloy type are installed on connecting plate 10
Material 13, row aluminium alloy extrusions 13 is arranged on multispectral lens barrel 18, and triangle joint frame is passed through on stringer aluminium alloy extrusions 12
15 are provided with top aluminium alloy extrusions 14, at top aluminium alloy extrusions 14 and triangle joint frame 15 and stringer aluminium alloy extrusions 12 it
Between be installed with T-shaped iron plate 16, the one end of iron wire 17 is fixed on T-shaped iron plate 16, and the other end surrounds circle and is enclosed within multispectral mirror
The lower edge of cylinder 18, digital camera 19 is positioned on multispectral lens barrel 18, and the center of digital camera 19 and multispectral mirror
The center alignment of cylinder 18；Installation upright pole section bar 20 is screwed in frame 1；The top of upright pole section bar 20 fixed installation silk
Bar stepper motor 22, the side of upright pole section bar 20 is installed by triangle joint frame 21 and Long Irons 23；Pass through on the screw mandrel of stepper motor 22
Transmission bracket 24 is threaded with, the bottom of transmission bracket 24 is fixedly connected semi-circular plate 25, and voltage-stabilized power supply 26 passes through wire and three
Driver is connected, and the personal computer 27 for being provided with motion control card is connected by signal transmssion line with three drivers.
The utility model is described in further details below：
The utility model mainly includes being provided with personal computer, digital camera, multispectral lens barrel, the circle of motion control card
Post line slideway, ball screw slide unit, stepper motor driver, voltage-stabilized power supply etc..
Wherein, described personal computer is used to be connected by data wire with digital camera, and observation digital camera is collected
Image information and preserve image information, while controlling three steppings to driver by motion control card output pulse signal
The motion of motor.
Digital camera is used to gather the full palm image and the local clear palmprint image for amplifying of user.
Multispectral lens barrel is used to provide the light source of various different wave lengths and amplifies the palmprint image of user.It includes six light
Spectrum light source, they are six groups of LEDs of different wave length, are respectively white light, feux rouges, gold-tinted, green glow, blue light, purple light；One group can put
The amplifying lens group of big image；Annular cover, six groups of LEDs of different wave length are uniform staggered on annular cover；It is built-in
Light source control box, is responsible for being powered to all of LED and being switched the light source of different spectrum.
Cylindrical linear rail is used to bear the lower pressure that stepper motor is transmitted to it, and ensures that screw mandrel slide unit does directly thereon
Line is moved back and forth.
Ball screw slide unit is used to drive object disposing platform thereon to move together.When lead screw motor is rotated, by connecting shaft
Device drives screw mandrel to rotate, and has rotation screw thread in sliding block, and axle is converted into the rectilinear movement of sliding block.Therefore, lead screw motor is worked as
During rotation, drive connecting plate to move by driving block, also just driven the movement of digital camera and multispectral lens barrel, and use
The palm at family is motionless, therefore can just collect the palmprint image of diverse location.
Stepper motor driver is used to receive the pulse signal of motion control card output and be provided to stepper motor to drive control
Pulse processed.
Transmission bracket is used to change the position of digital camera.
The stable DC voltage that voltage-stabilized power supply is used for needed for being provided to stepper motor driver.
Base is made up of aluminium alloy extrusions and cylindrical linear rail, and vertical rod and driving stepper motor are provided with base
Device；
Stepper motor is installed on aluminium alloy extrusions, stepper motor is connected with drive lead screw by shaft joint, on screw mandrel
Ball slider is installed, ball slider is fixed with the bottom of ball screw slide unit, ball screw slide unit is built up with bottom screw mandrel
" ten " word, ball screw slide unit is connected with cylindrical linear rail by opening linear slide unit；
Connecting plate is fixedly installed on the sliding block of ball screw slide unit by Philip's head screw；Stringer aluminium alloy extrusions and row
Aluminium alloy extrusions is fixedly installed on connecting plate；Aluminium alloy extrusions is fixed by triangle joint frame with stringer aluminium alloy extrusions and connected
Connect；T-shaped iron plate is fixed between aluminium alloy extrusions and triangle joint frame and stringer aluminium alloy extrusions；Iron wire one end is fixed on T-shaped
On iron plate, the other end surrounds the circular lower edge for being enclosed within multispectral lens barrel；Digital camera is positioned on multispectral lens barrel, digital
The center of camera is aligned with the center of multispectral lens barrel；
Installation upright pole section bar is screwed on the aluminium alloy extrusions of bottom；Upright pole section bar top fixed installation screw mandrel step
Stepper motor, upright pole section bar side is installed by triangle joint frame and stock；Transmission branch has been connected through a screw thread on the screw mandrel of stepper motor
Frame, transmission bracket bottom is fixedly connected semi-circular plate.
The utility model base is made up of frame 1 and cylindrical linear rail 2, and upright pole section bar is provided with base
20 and stepper motor driver 26；
Stepper motor 4 is installed in frame 1, stepper motor 4 is connected with drive lead screw 6 by shaft joint 5
Connect, ball slider 7 is installed on screw mandrel 6, ball slider 7 is fixed with the bottom of ball screw slide unit 9, makes ball wire
Bar slide unit 9 builds up " ten " word with bottom screw mandrel 6, and ball screw slide unit 9 passes through opening straight line with cylindrical linear rail 2
Sliding unit 8 is connected；
Connecting plate 10 is fixedly installed on the sliding block of ball screw slide unit 9 by Philip's head screw 11；Stringer aluminium is closed
Metal type material 12 is fixedly installed on connecting plate 10 with row aluminium alloy extrusions 13；Top aluminium alloy extrusions 14 with it is vertical
Row aluminium alloy extrusions 12 is fixedly connected by triangle joint frame 15；T-shaped iron plate 16 be fixed on aluminium alloy extrusions 14 with
Between triangle joint frame 15 and stringer aluminium alloy extrusions 12；The one end of iron wire 17 is fixed on T-shaped iron plate 16, the other end
Surround the circular lower edge for being enclosed within multispectral lens barrel 18；Digital camera 19 is positioned on multispectral lens barrel 18, digital
The center of camera 19 is aligned with the center of multispectral lens barrel 18；
Installation upright pole section bar 20 is screwed on bottom bay 1；The top of upright pole section bar 20 fixed installation silk
Bar stepper motor 22, the side of upright pole section bar 20 is installed by triangle joint frame 21 and Long Irons 23；Stepper motor 22
Transmission bracket 24 is connected through a screw thread on screw mandrel, the bottom of transmission bracket 24 is fixedly connected semi-circular plate 25, voltage-stabilized power supply
26 are connected by wire with three drivers, be provided with the personal computer 27 of motion control card by signal transmssion line with
Three driver connections.
Be perpendicularly fixed at multispectral lens barrel in iron wire circle by the utility model, and the lamp of six groups of different wave lengths is arranged into
Even annular array staggeredly is fixed on lens barrel inner plane.Light source control box is fixed on annular lens barrel downside, light source control box
Built with the battery and the button switch of control light source switching powered to lamp.Digital camera lens are first placed in semi-circular plate down
On, the palm print image information that digital camera is collected carries out the data transfer of real-time synchronization by data wire and personal computer,
And palmprint image is observed by personal computer, the collection of selectivity simultaneously stores palm print image information.
The ball screw slide unit two ends of bottom are fixed on aluminium alloy wider, ball screw slide unit bottom surface thereon respectively with
Two linear slide units and bottom slide unit are fixed, and two ball screw slide units are mutually perpendicular to, that is, build up " ten " word.
During collection palm print image information, user opens palm naturally, and be positioned over the back of the hand on aluminium section bar upward by the palm of the hand, together
When make finger parallel to the direction of cylindrical linear rail.Shooting image in observation digital camera, makes palm image be in the visual field
The heart simultaneously shoots hand images.Simultaneous computer controls two stepper motors to drive multispectral camera motion to digital camera lower section,
Should ensure that lens barrel center is aligned with the optical center of digital camera, stepper motor 22 is moved and causes that digital camera naturally falls in light more
Among spectrum lens barrel.The subsequent vertical screw mandrel slide unit of computer controls two is planar moved, and gathers the multispectral of diverse location
Palmprint image.
The motion control portion of ball screw slide unit：
The collection lenses of multi-light spectrum palm print Acquisition Instrument determine specific position by two stepper motors, and control principle is just
It is that any point in a plane can be by coordinate（X, y）To represent.Wherein, x-axis and y-axis correspond to picking platform bottom respectively
Two ball screw slide units.Assuming that stepper motor A control x-axis direction, stepper motor B control y-axis direction.First, model is set up
Need to initialize two stepper motors before, the multispectral optical center position of multispectral picking platform is determined in coordinate
Origin（0,0）Place；Starting motor A makes its Positive work, and it is Positive work to set along the rotation direction of x-axis positive direction, to coordinate
（0, n）, write down the step number a of motor operation；Make motor static, start motor B Positive works, the square operating of same setting y-axis
Direction is Positive work, to coordinate（M, n）, the operation step number for now writing down motor is b.If so we make camera exist（X,
y）Place's collection image, need to only control the positive operation a*x/n of stepper motor A to walk, and walk the positive operation b*y/m of stepper motor B, so
The calculation machine that can just use tricks first calculates the step number of operation, then by motion control card export pulse come so that control stepper motor to transport
Capable distance, any station acquisition hand image for alloing the collection camera lens part of multispectral Acquisition Instrument to move in region.
Claims (1)
1. a kind of multi-light spectrum palm print Acquisition Instrument, it is characterised in that：In frame（1）On be installed with cylindrical linear rail（2）, step
Stepper motor（4）It is fixedly mounted on frame（1）Side, stepper motor（4）Axle pass through shaft coupling（5）Screw mandrel is installed（6）, screw mandrel
（6）The other end is arranged on frame by support（1）Opposite side, in screw mandrel（6）Upper screw thread is provided with ball slider（7）, ball cunning
Block（7）On ball screw slide unit is installed（9）, ball screw slide unit（9）It is mounted below and cylindrical linear rail（2）Matching
Opening linear slide unit（8）, ball screw slide unit（9）It is upper to pass through motor（93）It is coaxially installed with longitudinal screw mandrel（91）, vertical
To screw mandrel（91）Upper screw thread Matching installation has longitudinal ball slider（92）, in longitudinal ball slider（92）It is upper to pass through Philip's head screw
（11）Connecting plate is installed（10）, in connecting plate（10）On stringer aluminium alloy extrusions is installed（12）With row aluminium alloy extrusions
（13）, row aluminium alloy extrusions（13）Installed in multispectral lens barrel（18）On, in stringer aluminium alloy extrusions（12）It is upper to pass through triangle
Link（15）Top aluminium alloy extrusions is installed（14）, in top aluminium alloy extrusions（14）With triangle joint frame（15）And stringer
Aluminium alloy extrusions（12）Between be installed with T-shaped iron plate（16）, iron wire（17）T-shaped iron plate is fixed in one end（16）On, it is another
End surrounds circle and is enclosed within multispectral lens barrel（18）Lower edge, digital camera（19）It is positioned over multispectral lens barrel（18）On, and
And digital camera（19）Center and multispectral lens barrel（18）Center alignment；In frame（1）On to be screwed installation perpendicular
Rod-type material（20）；Upright pole section bar（20）Top fixedly mounts screw mandrel stepper motor（22）, upright pole section bar（20）Install three in side
Angle link（21）And Long Irons（23）；Stepper motor（22）Screw mandrel on be connected through a screw thread transmission bracket（24）, transmission
Support（24）Bottom is fixedly connected semi-circular plate（25）, voltage-stabilized power supply（26）It is connected with three drivers by wire, fortune is installed
The personal computer of dynamic control card（27）It is connected with three drivers by signal transmssion line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620677938.1U CN206236109U (en) | 2016-07-01 | 2016-07-01 | Multi-light spectrum palm print Acquisition Instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620677938.1U CN206236109U (en) | 2016-07-01 | 2016-07-01 | Multi-light spectrum palm print Acquisition Instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206236109U true CN206236109U (en) | 2017-06-09 |
Family
ID=58986125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620677938.1U Expired - Fee Related CN206236109U (en) | 2016-07-01 | 2016-07-01 | Multi-light spectrum palm print Acquisition Instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206236109U (en) |
-
2016
- 2016-07-01 CN CN201620677938.1U patent/CN206236109U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20210701 |
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| CF01 | Termination of patent right due to non-payment of annual fee |