WO2020114461A1 - 虹膜采集设备及其采集方法 - Google Patents

虹膜采集设备及其采集方法 Download PDF

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Publication number
WO2020114461A1
WO2020114461A1 PCT/CN2019/123331 CN2019123331W WO2020114461A1 WO 2020114461 A1 WO2020114461 A1 WO 2020114461A1 CN 2019123331 W CN2019123331 W CN 2019123331W WO 2020114461 A1 WO2020114461 A1 WO 2020114461A1
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WIPO (PCT)
Prior art keywords
iris
collection device
transmission
iris collection
fixedly connected
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PCT/CN2019/123331
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English (en)
French (fr)
Inventor
刘鹏
焦国华
章逸舟
陈巍
陈良培
周志盛
鲁远甫
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Shenzhen Institute of Advanced Technology of CAS
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Shenzhen Institute of Advanced Technology of CAS
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Publication of WO2020114461A1 publication Critical patent/WO2020114461A1/zh
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06V40/18—Eye characteristics, e.g. of the iris
    • G06V40/19—Sensors therefor
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06V40/18—Eye characteristics, e.g. of the iris
    • G06V40/197—Matching; Classification

Definitions

  • the invention relates to the technical field of iris collection, in particular to an iris collection device and a collection method thereof.
  • Iris collection is the basis of iris recognition technology.
  • the iris recognition process generally collects the user's binocular iris image first, and then matches the binocular iris image with the user's basic information (such as name, gender, etc.) and uploads it to the database.
  • the user After the iris collection is completed, as long as the new collected iris image is searched in the database again, the basic information of the user to whom the newly collected iris image belongs can be determined.
  • iris collection equipment Most of the existing iris collection equipment is a fixed-focus system with a small depth of field. It is necessary to actively cooperate with the collection object and the iris collection equipment.
  • the artificial hand-held collection equipment is aimed at the identification lens for iris collection.
  • the entire iris collection process is cumbersome. Reduce the comfort and efficiency of iris collection.
  • the present invention provides an iris collection device and a collection method thereof, which can improve the comfort and efficiency of iris collection.
  • the specific technical solution proposed by the present invention is to provide an iris collection device including a base, a transmission device, and an iris collection device, one end of the transmission device is connected to the base, and the other end is connected to the iris collection The device is connected, and the transmission device drives the iris collection device to move away from/close to the base.
  • the transmission device includes a drive motor and a transmission mechanism, the drive motor is located in the base, and the transmission mechanism is connected to the drive motor.
  • the transmission mechanism is a ball screw transmission mechanism;
  • the ball screw transmission mechanism includes a screw, a nut, and a ball, the screw is connected to the drive motor, and the nut is sleeved on the wire
  • the surface of the rod; the surface of the screw is provided with an external thread, the internal surface of the nut is provided with an internal thread corresponding to the external thread, the ball is located between the external thread and the internal thread, so The iris collection device is fixedly connected with the nut.
  • the ball screw drive mechanism further includes a connection sleeve and a slider, the slider is fixedly connected to the iris collection device, one end of the connection sleeve is fixedly connected to the slider, and the other end is connected to the Nut fixed connection.
  • the ball screw drive mechanism further includes a main gear and a sub gear; the main gear is connected to the drive motor, the sub gear is connected to the end of the screw, and the main gear is connected to the The secondary gears mesh with each other.
  • the transmission mechanism is a synchronous belt transmission mechanism;
  • the synchronous belt transmission mechanism includes a transmission gear, a transmission belt and a connection block, the transmission gear is fixedly connected to the drive motor, and the transmission belt and the transmission gear are mutually connected Engagement, the connection block is fixedly connected with the transmission belt, and the iris collection device is fixedly connected with the connection block.
  • the iris collection device includes a housing, an infrared light source and an iris camera, the housing is fixedly connected to the transmission device, and the infrared light source and the iris camera are both disposed in the housing.
  • the lens of the iris camera is a long-focus high-resolution iris lens
  • the iris collection device further includes an optical filter provided on the housing.
  • the direction of the optical axis of the iris camera is consistent with the moving direction of the iris collection device; the iris collection device further includes a reflecting mirror disposed in the housing, the reflecting mirror and the iris camera The angle between the optical axes is 45°.
  • the invention also provides a collection method of the iris collection device as described in any one of the above, the collection method includes the steps of:
  • the distance between the iris collection device and the base is adjusted by the transmission device, and the human eye is imaged when it appears in the field of view of the iris collection device.
  • the iris collection device proposed by the present invention includes a base, a transmission device and an iris collection device. One end of the transmission device is connected to the base and the other end is connected to the iris collection device.
  • the transmission device adjusts the distance between the iris collection device and the base The distance is such that the iris collection device is aligned with the human eye, so that no artificial hand-held collection device is needed to align the eye with the recognition lens, which improves the comfort and efficiency of iris collection.
  • FIG. 1 is a schematic structural diagram of an iris collection device of this embodiment
  • FIG. 2 is another schematic structural diagram of the iris collection device of this embodiment
  • FIG. 3 is a cross-sectional view of the iris collection device in the first implementation of this embodiment
  • Figure 5 is a schematic diagram of an iris collection system.
  • the iris collection device 10 in this embodiment includes a base 1, a transmission device 2 and an iris collection device 3. One end of the transmission device 2 is connected to the base 1, and the other end is connected to the iris collection device 3. The transmission device 2 drives the iris collection device 3 to move away from/near the base 1.
  • the iris collection device 10 in this embodiment is a desktop iris collection device, that is, during the iris collection process, the iris collection device 10 is placed on the desktop to collect iris information of the human eye.
  • the collecting object wants to collect the iris in a standing posture, it is only necessary to place the iris collecting device 10 on a table with a high height, and let the iris collecting device 3 aim at the eye of the collecting object.
  • the collection object wants to perform iris collection in a sitting posture, it is only necessary to place the iris collection device 10 on a table with a low height, and align the iris collection device 3 with the eyes of the collection object.
  • the iris collection device 10 in this embodiment may also be a floor-standing type, that is, during the iris collection process, the iris collection device 10 is directly placed on the ground.
  • the distance between the iris collection device 3 and the base 1 is adjusted by the transmission device 2 to realize the iris collection of objects of different heights without the need for active collection objects
  • an artificial handheld collection device the comfort and efficiency of iris collection are improved.
  • the transmission device 2 drives the iris collection device 3 to move away from the base 1, so that the iris collection device 3 is aimed at the collection object's eyes.
  • the iris collection device 3 is driven to move toward the base 1 by the transmission device, so that the iris collection device 3 is aimed at the eyes of the collection object.
  • the transmission device 2 includes a drive motor 21 and a transmission mechanism 22.
  • the drive motor 21 is located in the base 1, and the transmission mechanism 22 is connected to the drive motor 21.
  • the driving motor 21 is used to drive the transmission mechanism 22 so that the transmission mechanism 22 drives the iris collection device 3 to move away from/near the base 1.
  • the transmission mechanism 22 is a ball screw transmission mechanism.
  • the ball screw drive mechanism includes a screw 220, a nut 221, and balls (not shown).
  • the screw rod 220 is axially connected to the driving motor 21, the nut 221 is sleeved on the surface of the screw rod 220, the surface of the screw rod 220 is provided with an external thread 200, and the inner surface of the nut 221 is provided with an internal thread (not shown), the internal thread Corresponding to the external thread 200, there is a thread fit between the internal thread and the external thread 200.
  • the balls are located between the external thread 200 and the internal thread, and the balls are in rolling fit between the screw rod 220 and the nut 221.
  • the iris collection device 3 is fixedly connected to the nut 221, and the driving motor 21 drives the screw 220 to rotate, and the rotation of the screw 220 drives the nut 221 to move linearly away from/near the base 1.
  • the driving motor rotates in a horizontal plane.
  • the driving motor 21 rotates clockwise
  • the screw 220 rotates clockwise with the driving motor 21.
  • the nut 221 moves away from the base 1 and drives the iris collection
  • the device 3 moves away from the base 1.
  • the driving motor 21 rotates counterclockwise
  • the screw 220 rotates counterclockwise along with the driving motor 21.
  • the nut 221 moves toward the base 1 and drives the iris collection device 3 toward the base 1.
  • the ball screw transmission mechanism further includes a connecting sleeve 222 and a slider 223.
  • the slider 223 is fixedly connected to the iris collecting device 3, one end of the connecting sleeve 222 is fixedly connected to the slider 223, and the other end is fixedly connected to the nut 221.
  • the connecting sleeve 222 is sleeved on the surface of the screw rod 220, and the connecting sleeve 222 and the nut 221 and the connecting sleeve 222 and the slider 223 are fixed by screw connection. Fixing the iris collection device 3 on the slider 223 can increase the stability of the iris collection device 3.
  • the screw rod 220 in this embodiment may be directly connected to the drive motor 21, or may be connected to the drive motor 21 through a gear transmission method.
  • the ball screw transmission mechanism further includes a main gear 224 and a sub gear (not shown).
  • the main gear 224 is connected to the drive motor 21, and the sub gear is connected to the end of the screw 220.
  • the main gear 224 and the auxiliary gear mesh with each other, and the driving motor drives the main gear 224 to rotate.
  • the main gear 224 drives the auxiliary gear to rotate while meshing, and drives the screw 220 to rotate.
  • the screw rod 220 is connected to the driving motor 21 through a gear transmission method to improve the stability and accuracy of the transmission, and at the same time increase the efficiency and service life of the transmission.
  • the transmission device 2 further includes a protective shell 23 which is sleeved on the surface of the connection sleeve 222 and is used to encapsulate the transmission mechanism 22.
  • the iris collection device 3 in this embodiment includes a housing 31, an infrared light source 32, and an iris camera 33.
  • the housing 31 is fixedly connected to the transmission device 2, specifically, the housing 31 is fixedly connected to the slider 223.
  • the infrared light source 32 and the iris camera 33 are both installed in the housing 31.
  • the infrared light source 32 and the iris camera 33 are encapsulated through the housing 31 to prevent dust or moisture from entering and damaging the infrared light source 32 and the iris camera 33.
  • the side of the housing 31 facing the collection object is a light-transmitting surface, and the infrared light source 32 is used to emit infrared light, and the infrared light it emits exits from the light-transmitting surface of the housing 31 to optically compensate for the iris imaging.
  • the infrared light source 32 is at an angle to the direct viewing direction of the eyes of the collecting object, so that the infrared light emitted by the infrared light source 32 will not directly irradiate the eyes of the collecting object and cause discomfort, that is, the infrared light source 32
  • the emitted infrared light enters the eyes of the collecting object diagonally from below the eyes of the collecting object.
  • the infrared light emitted by the infrared light source 32 can also enter the eyes of the collecting object from diagonally above the collecting object.
  • the infrared light can compensate for the iris imaging and does not directly illuminate the eye of the subject.
  • the iris camera 33 is used to obtain an image of the eye of the collecting object.
  • the lens of the iris camera 33 can be directly aimed at the eye of the collecting object, or it can be at a certain angle from the direct viewing direction of the eye of the collecting object and the eye of the collecting object can be collected by the optical element The light is reflected to the lens of the iris camera 33.
  • the optical axis direction of the iris camera 33 in this embodiment is consistent with the movement direction of the iris collection device 3, and the movement direction of the iris collection device 3 is the vertical direction.
  • the optical axis direction is also the vertical direction, that is, the iris camera 33 is placed vertically with its lens facing upward.
  • the iris collecting device 3 in this embodiment further includes a reflecting mirror 34 disposed in the housing 31, the reflecting mirror 34 It is used to reflect the light of the eye of the collecting object to the iris camera 33.
  • the direction of the light of the subject's eyes is horizontal, and the lens of the iris camera 33 faces upward. Therefore, the reflector 34 is located above the iris camera 33 and is clamped between the optical axis of the iris camera 33 When the angle is 45°, the light of the eyes of the collecting object can be reflected on the iris camera 33.
  • the lens of the iris camera 33 in this embodiment may also face downward.
  • the mirror 34 is located below the iris camera 33 and the angle between the optical axis of the iris camera 33 is 45°.
  • the exit direction of the infrared light emitted by the infrared light source 32 is away from the reflection surface of the mirror 34, thereby preventing the infrared light emitted by the infrared light source 32 from directly entering the reflection The reflecting surface of the mirror 34.
  • the lens of the iris camera 33 in this embodiment is a long focal length high-resolution iris lens, where the depth of field of the iris camera 33 refers to the distance range that the iris camera can clearly image, so that the iris The camera 33 can clearly image the eyes of a distant collection object, which improves the comfort and portability of iris collection.
  • the iris collection device 3 further includes a filter 35 disposed on the housing 31.
  • the housing 31 has an opening on the side facing the collection object.
  • the filter 35 is embedded in the opening and forms a closed cavity with the housing 31. Among them, the filter 35 is used to filter out the interference light in other wavelength bands.
  • the transmission mechanism 22 is a synchronous belt transmission mechanism.
  • the synchronous belt transmission mechanism includes a transmission gear 300, a transmission belt 301, and a connection block 302.
  • the transmission gear 300 is fixedly connected to the drive motor 21, the transmission belt 301 and the transmission gear 300 mesh with each other, the connection block 302 is fixedly connected to the transmission belt 301, and the iris collection device 3 is connected to Block 302 is fixedly connected.
  • the driving motor 21 rotates in a vertical plane.
  • the transmission gear 300 rotates clockwise with the driving motor 21.
  • the transmission belt 301 also rotates clockwise, and the connecting block 302 faces It moves closer to the base 1 and drives the iris collection device 3 to move closer to the base 1.
  • the transmission gear 300 rotates counterclockwise along with the drive motor 21.
  • the transmission belt 301 also rotates counterclockwise, and the connecting block 302 moves away from the base 1 and drives the iris collection device 3 toward Move away from the base 1.
  • the transmission mechanism 22 in this embodiment is not limited to the ball screw transmission mechanism and the synchronous belt transmission mechanism, as long as it can drive the iris collection device 3 to move in the vertical direction of other transmission mechanisms, which is not limited herein.
  • the iris collection device 10 in this embodiment further includes a control button 4.
  • the control button 4 is provided on the base and is used to control the rotation direction of the drive motor 21.
  • the control button 4 includes two buttons, one button is used to control the drive motor 21 to rotate clockwise, and the other button is used to control the drive motor 21 Turn counterclockwise.
  • the iris collection device 10 in this embodiment may further include an infrared ranging device (not shown).
  • the collection object and the iris collection device 3 may be acquired through the infrared ranging device The distance between them, and then move the iris collection device 10 to the focus position of the iris camera 33 according to the obtained distance to obtain a clear iris image.
  • this embodiment also provides an iris collection system, which includes a processor 20, a power supply 30, and the iris collection device 10 described above.
  • the power supply 30 is used to supply power to the driving motor 21, the infrared light source 32 and the processor 20.
  • the base 1 is provided with a wiring port 11.
  • the processor 20 is connected to the iris camera 33 through the wiring port 11.
  • the iris camera 33 sends the captured human eye image of the collected object to the processor 20, and the processor 20 extracts people from the human eye image.
  • the iris information of the eye is stored and uploaded to the iris database.
  • the processor 20 is a computer.
  • the processor 20 may also be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf Programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • This embodiment also provides a collection method of the iris collection device as described above.
  • the collection method includes the steps of:
  • the predetermined position refers to a position where the iris camera 33 can clearly image the human eye, that is, the predetermined position refers to a position within the depth of field of the iris camera 33;
  • Step S2 is to adjust the distance between the iris collection device 10 and the collection object, so that the collection object is within the depth of field of the iris camera
  • step S3 is to adjust the distance between the iris collection device 3 and the base 1, so that the collection object The eye is in the lens of the iris camera 33.

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Abstract

本发明提供一种虹膜采集设备及其采集方法，所述虹膜采集设备包括底座、传动装置及虹膜采集装置，所述传动装置的一端与所述底座连接、另一端与所述虹膜采集装置连接，所述传动装置带动所述虹膜采集装置朝着远离/靠近所述底座的方向运动。本发明提出的虹膜采集设备包括底座、传动装置及虹膜采集装置，所述传动装置的一端与所述底座连接、另一端与所述虹膜采集装置连接，通过传动装置调节虹膜采集装置与底座之间的距离，以使得虹膜采集装置与人眼对准，从而不需要人为的手持采集设备来将眼睛对准识别镜头，提升了虹膜采集的舒适度和效率。

Description

虹膜采集设备及其采集方法 技术领域
本发明涉及虹膜采集技术领域，尤其涉及一种虹膜采集设备及其采集方法。
背景技术
由于指纹识别技术自身固有的特性而存在一定的缺陷，其在实际应用中与用户需求的不相适应已越来越明显，因此，更先进、更精确、更可靠、更稳定的高端人体生物识别技术-虹膜识别开始逐渐取代指纹识别技术，占据更多的人体生物识别、身份认证市场。
虹膜采集是虹膜识别技术的基础，虹膜识别过程一般是先采集用户的双目虹膜图像，再将双目虹膜图像与该用户的基本信息(如名字、性别等)相匹配并上传到数据库，用户完成虹膜采集后，只要再次根据新采集的虹膜图像在数据库中进行查找，就可以判断出最新采集的虹膜图像所属用户的基本信息。
现有的虹膜采集设备大部分为景深较小的定焦系统，需要采集对象与虹膜采集设备主动配合，人为的手持采集设备，将眼睛对准识别镜头进行虹膜采集，整个虹膜采集过程比较繁琐，降低了虹膜采集的舒适度和效率。
发明内容
为了解决现有技术的不足，本发明提供一种虹膜采集设备及其采集方法，能够提升虹膜采集的舒适度和效率。
本发明提出的具体技术方案为：提供一种虹膜采集设备，所述虹膜采集设备包括底座、传动装置及虹膜采集装置，所述传动装置的一端与所述底座连接、另一端与所述虹膜采集装置连接，所述传动装置带动所述虹膜采集装置朝着远离/靠近所述底座的方向运动。
可选地，所述传动装置包括驱动电机和传动机构，所述驱动电机位于所述 底座内，所述传动机构与所述驱动电机连接。
可选地，所述传动机构为滚珠丝杆传动机构；所述滚珠丝杆传动机构包括丝杆、螺母及滚珠，所述丝杆与所述驱动电机连接，所述螺母套设于所述丝杆的表面；所述丝杆的表面设有外螺纹，所述螺母的内表面设有与所述外螺纹对应的内螺纹，所述滚珠位于所述外螺纹与所述内螺纹之间，所述虹膜采集装置与所述螺母固定连接。
可选地，所述滚珠丝杆传动机构还包括连接套和滑块，所述滑块与所述虹膜采集装置固定连接，所述连接套一端与所述滑块固定连接、另一端与所述螺母固定连接。
可选地，所述滚珠丝杆传动机构还包括主齿轮和副齿轮；所述主齿轮与所述驱动电机连接，所述副齿轮与所述丝杆的端部连接，所述主齿轮与所述副齿轮互相啮合。
可选地，所述传动机构为同步带传动机构；所述同步带传动机构包括传动齿轮、传动带及连接块，所述传动齿轮与所述驱动电机固定连接，所述传动带与所述传动齿轮互相啮合，所述连接块与所述传动带固定连接，所述虹膜采集装置与所述连接块固定连接。
可选地，所述虹膜采集装置包括外壳、红外光源及虹膜相机，所述外壳与所述传动装置固定连接，所述红外光源、虹膜相机均设置于所述外壳内。
可选地，所述虹膜相机的镜头为长焦距高分辨率的虹膜镜头，和/或所述虹膜采集装置还包括设置于所述外壳上的滤光片。
可选地，所述虹膜相机的光轴方向与所述虹膜采集装置的运动方向一致；所述虹膜采集装置还包括设置于所述外壳内的反射镜，所述反射镜与所述虹膜相机的光轴之间的夹角为45°。
本发明还提供了一种如上任一项所述的虹膜采集设备的采集方法，所述采集方法包括步骤：
将所述虹膜采集设备放置在预定位置，所述预定位置能够对人眼进行清晰成像；
判断人眼是否在虹膜采集装置的视野内；
若人眼不在虹膜采集装置的视野内，则通过传动装置调节虹膜采集装置与底座之间的距离，并在人眼出现在虹膜采集装置的视野内时对人眼进行成像。
本发明提出的虹膜采集设备包括底座、传动装置及虹膜采集装置，所述传动装置的一端与所述底座连接、另一端与所述虹膜采集装置连接，通过传动装置调节虹膜采集装置与底座之间的距离，以使得虹膜采集装置与人眼对准，从而不需要人为的手持采集设备来将眼睛对准识别镜头，提升了虹膜采集的舒适度和效率。
附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其它有益效果显而易见。
图1为本实施例的虹膜采集设备的结构示意图；
图2为本实施例的虹膜采集设备的另一结构示意图；
图3为本实施例的第一实施方式中的虹膜采集设备的剖面图；
图4为本实施例的第二实施方式中的传动机构的结构示意图；
图5为虹膜采集系统的示意图。
具体实施方式
以下，将参照附图来详细描述本发明的实施例。然而，可以以许多不同的形式来实施本发明，并且本发明不应该被解释为限制于这里阐述的具体实施例。相反，提供这些实施例是为了解释本发明的原理及其实际应用，从而使本领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的各种修改。在附图中，相同的标号将始终被用于表示相同的元件。
参照图1～2，本实施例中的虹膜采集设备10包括底座1、传动装置2及虹膜采集装置3。传动装置2的一端与底座1连接、另一端与虹膜采集装置3连接，传动装置2带动虹膜采集装置3朝着远离/靠近底座1的方向运动。
本实施例中的虹膜采集设备10为桌面式虹膜采集设备，即在虹膜采集过程中，虹膜采集设备10放置在桌面上对人眼的虹膜信息进行采集。当采集对象想以站立的姿态进行虹膜采集时，只需要将虹膜采集设备10放置在高度较高的桌面上，让虹膜采集装置3对准采集对象的眼睛即可。当采集对象想以坐着的姿态进行虹膜采集时，只需要将虹膜采集设备10放置在高度较低的桌面上，让虹膜采集装置3对准采集对象的眼睛即可。当然，本实施例中的虹膜采集设备10也可以是落地式，即在虹膜采集过程中，虹膜采集设备10直接放置在地面。
由于虹膜采集设备10需要对不同身高的采集对象进行虹膜采集，通过传动装置2调节虹膜采集装置3与底座1之间的距离来实现对不同身高的采集对象进行虹膜采集，而不需要采集对象主动配合虹膜采集设备10，人为的手持采集设备，从而提升了虹膜采集的舒适度和效率。
具体地，当采集对象的身高较高时，通过传动装置2带动虹膜采集装置3朝着远离底座1的方向运动，以使得虹膜采集装置3对准采集对象的眼睛。当采集对象的身高较低时，通过传动装置带动虹膜采集装置3朝着靠近底座1的方向运动，以使得虹膜采集装置3对准采集对象的眼睛。
为了实现自动调节，传动装置2包括驱动电机21和传动机构22，驱动电机21位于底座1内，传动机构22与驱动电机21连接。驱动电机21用于驱动传动机构22，以使得传动机构22带动虹膜采集装置3朝着远离/靠近底座1的方向运动。
参照图3，在本实施例的第一实施方式中，传动机构22为滚珠丝杆传动机构。滚珠丝杆传动机构包括丝杆220、螺母221及滚珠(图未示)。丝杆220与驱动电机21轴向连接，螺母221套设于丝杆220的表面，丝杆220的表面设有外螺纹200，螺母221的内表面设有内螺纹(图未示)，内螺纹与外螺纹200对应，内螺纹与外螺纹200之间为螺纹配合。滚珠位于外螺纹200与内螺纹之间，滚珠与丝杆220和螺母221之间均为滚动配合。虹膜采集装置3与螺母221固定连接，驱动电机21带动丝杆220转动，丝杆220转动带动螺母221沿远离/靠近底座1做直线运动。
具体地，驱动电机在水平面内做旋转运动，当驱动电机21顺时针转动时，丝杆220跟着驱动电机21一起顺时针转动，此时，螺母221朝着远离底座1的方向运动并带动虹膜采集装置3朝着远离底座1的方向运动。当驱动电机21逆时针转动时，丝杆220跟着驱动电机21一起逆时针转动，此时，螺母221朝着靠近底座1的方向运动并带动虹膜采集装置3朝着靠近底座1的方向运动。
为了保证螺母221具有足够长的行程，滚珠丝杆传动机构还包括连接套222和滑块223。滑块223与虹膜采集装置3固定连接，连接套222一端与滑块223固定连接、另一端与螺母221固定连接。连接套222套设在丝杆220的表面，连接套222与螺母221之间以及连接套222与滑块223之间均通过螺纹连接的方式进行固定。将虹膜采集装置3固定在滑块223上可以增加虹膜采集装置3的稳定性。
本实施例中的丝杆220可以直接与驱动电机21连接，也可以通过齿轮传动的方式与驱动电机21连接。
具体地，滚珠丝杆传动机构还包括主齿轮224和副齿轮(图未示)。主齿轮224与驱动电机21连接，副齿轮与丝杆220的端部连接。主齿轮224与副齿轮互相啮合，驱动电机驱动主齿轮224转动，主齿轮224通过啮合的方式带动副齿轮转动的同时带动丝杆220的转动。丝杆220通过齿轮传动的方式与驱动电机21连接可以提升传动的平稳性和精确性，同时可以增加传动的效率和使用寿命。
传动装置2还包括保护壳23，保护壳23套设于连接套222的表面，用于对传动机构22进行封装。
本实施例中的虹膜采集装置3包括外壳31、红外光源32及虹膜相机33，外壳31与传动装置2固定连接，具体地，外壳31与滑块223固定连接。红外光源32、虹膜相机33均设置于外壳31内。通过外壳31将红外光源32和虹膜相机33进行封装，避免灰尘或水汽进入而损坏红外光源32和虹膜相机33。
外壳31朝向采集对象的一面为透光面，红外光源32用于发射红外光，其发射的红外光从外壳31的透光面出射，从而对虹膜成像进行光补偿。为了提升虹膜采集的舒适度，红外光源32与采集对象的眼睛的直视方向呈一定角度，这样，红外光源32发射的红外光不会直接照射至采集对象的眼睛而引起不适，即红外光源32发射的红外光从采集对象的眼睛的斜下方入射至采集对象的眼睛，当然，红外光源32发射的红外光也可以从采集对象的斜上方入射至采集对象的眼睛，这里只要可以红外光源32发射的红外光能够对虹膜成像进行光补偿且不是直接照射至采集对象的眼睛均可。
虹膜相机33用于获取采集对象的眼睛的图像，虹膜相机33的镜头可以直接对准采集对象的眼睛，也可以与采集对象的眼睛的直视方向呈一定角度并通过光学元件将采集对象的眼睛的光线反射至虹膜相机33的镜头。
为了减小整个虹膜采集设备10的体积，本实施例中的虹膜相机33的光轴方向与虹膜采集装置3的运动方向一致，虹膜采集装置3的运动方向为竖直方向，则虹膜相机33的光轴方向也是竖直方向，即虹膜相机33竖直放置，其镜头朝上。
由于虹膜镜头33的镜头朝上，为了能够使得采集对象的眼睛的光线能够入射至虹膜相机33上，本实施例中的虹膜采集装置3还包括设置于外壳31内的反射镜34，反射镜34用于将采集对象的眼睛的光线反射至虹膜相机33上。在虹膜采集过程中，采集对象的眼睛的光线的方向是水平方向，而虹膜相机33的镜头朝上，因此，反射镜34位于虹膜相机33的上方并与虹膜相机33的光轴之间的夹角为45°时，才能将采集对象的眼睛的光线反射至虹膜相机33上。
当然，本实施例中的虹膜相机33的镜头也可以朝下，此时，反射镜34位于虹膜相机33的下方并与虹膜相机33的光轴之间的夹角为45°。
较佳地，为了避免红外光源32发射的红外光对虹膜成像造成影响，红外光源32发射的红外光的出射方向背离反射镜34的反射面，从而避免红外光源32发射的红外光直接入射至反射镜34的反射面上。
为了增加虹膜相机33的景深，本实施例中的虹膜相机33的镜头为长焦距高分辨率的虹膜镜头，其中，虹膜相机33的景深指的是虹膜相机能够清晰成像的距离范围，这样，虹膜相机33便可以对较远距离的采集对象的眼睛进行清晰成像，提升了虹膜采集的舒适度和便携性。
虹膜采集装置3还包括设置于外壳31上的滤光片35，外壳31朝向采集对象的一面开设有开口，滤光片35嵌设于该开口中并与外壳31形成一个封闭的腔体。其中，滤光片35用于滤除其它波段的干扰光。
参照图4，在本实施例的第二实施方式中，传动机构22为同步带传动机构。同步带传动机构包括传动齿轮300、传动带301及连接块302，传动齿轮300与驱动电机21固定连接，传动带301与传动齿轮300互相啮合，连接块302与传动带301固定连接，虹膜采集装置3与连接块302固定连接。
具体地，驱动电机21在竖直平面内做旋转运动，当驱动电机21顺时针转动时，传动齿轮300跟着驱动电机21一起顺时针转动，此时，传动带301也顺时针转动，连接块302朝着靠近底座1的方向运动并带动虹膜采集装置3朝着靠近底座1的方向运动。当驱动电机21逆时针转动时，传动齿轮300跟着驱动电机21一起逆时针转动，此时，传动带301也逆时针转动，连接块302朝着远离底座1的方向运动并带动虹膜采集装置3朝着远离底座1的方向运动。
当然，本实施例中传动机构22并不仅限于滚珠丝杆传动机构和同步带传动机构，只要能够带动虹膜采集装置3在竖直方向运动的其他传动机构也可以，这里不做限定。
本实施例中的虹膜采集设备10还包括和控制按钮4。控制按钮4设置在底座上，其用于控制驱动电机21的转动方向，具体地，控制按钮4包括两个按键，一个按键用于控制驱动电机21顺时针转动，另一个按键用于控制驱动电机21逆时针转动。
此外，本实施例中的虹膜采集设备10还可以包括红外测距装置(图未示)，当采集对象不在虹膜相机33的景深内时，可以通过红外测距装置获取采集对象与虹膜采集装置3之间的距离，再根据获得的距离将虹膜采集设备10移动至虹膜相机33的聚焦位置，以获得清晰的虹膜图像。
参照图5，本实施例还提供了一种虹膜采集系统，其包括处理器20、电源30及如上所述的虹膜采集设备10。电源30用于给驱动电机21、红外光源32及处理器20供电。
底座1上设有接线口11，处理器20通过接线口11与虹膜相机33连接，虹膜相机33将拍摄的采集对象的人眼图像发送给处理器20，处理器20从人眼图像中提取人眼的虹膜信息存储并上传至虹膜数据库。其中，处理器20为计算机。
处理器20还可以是中央处理单元(Central Processing Unit，CPU)，也可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
本实施例还提供了一种如上所述的虹膜采集设备的采集方法，所述采集方法包括步骤：
S1、将虹膜采集设备10放置在预定位置，预定位置指的是虹膜相机33能够对人眼进行清晰成像的位置，即预定位置指的是在虹膜相机33的景深内的位置；
S2、判断人眼是否在虹膜采集装置3的视野内，即判断虹膜相机33的镜头是否能够捕捉到采集对象的眼睛；
S3、若人眼不在虹膜采集装置的视野内，则通过传动装置2调节虹膜采集装置3与底座1之间的距离，并在人眼出现在虹膜采集装置3的视野内时对人眼进行成像。
步骤S2是为了调节虹膜采集设备10与采集对象之间的距离，以使得采集对象位于虹膜相机的景深内，步骤S3是为了调节虹膜采集装置3与底座1之间的距离，以使得采集对象的眼睛位于虹膜相机33的镜头中。在虹膜采集设备10与采集对象的位置固定后，对不同的采集对象进行采集时，不再需要进行步骤S2，只需要进行步骤S3即可，即只需要根据采集对象的身高调节虹膜采集装置3与底座1之间的距离即可。
以上所述仅是本申请的具体实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。

Claims (20)

  1. 一种虹膜采集设备，其中，包括底座、传动装置及虹膜采集装置，所述传动装置的一端与所述底座连接、另一端与所述虹膜采集装置连接，所述传动装置带动所述虹膜采集装置朝着远离/靠近所述底座的方向运动。
  2. 根据权利要求1所述的虹膜采集设备，其中，所述传动装置包括驱动电机和传动机构，所述驱动电机位于所述底座内，所述传动机构与所述驱动电机连接。
  3. 根据权利要求2所述的虹膜采集设备，其中，所述传动机构为滚珠丝杆传动机构；所述滚珠丝杆传动机构包括丝杆、螺母及滚珠，所述丝杆与所述驱动电机连接，所述螺母套设于所述丝杆的表面；所述丝杆的表面设有外螺纹，所述螺母的内表面设有与所述外螺纹对应的内螺纹，所述滚珠位于所述外螺纹与所述内螺纹之间，所述虹膜采集装置与所述螺母固定连接。
  4. 根据权利要求3所述的虹膜采集设备，其中，所述滚珠丝杆传动机构还包括连接套和滑块，所述滑块与所述虹膜采集装置固定连接，所述连接套一端与所述滑块固定连接、另一端与所述螺母固定连接。
  5. 根据权利要求4所述的虹膜采集设备，其中，所述滚珠丝杆传动机构还包括主齿轮和副齿轮；所述主齿轮与所述驱动电机连接，所述副齿轮与所述丝杆的端部连接，所述主齿轮与所述副齿轮互相啮合。
  6. 根据权利要求2所述的虹膜采集设备，其中，所述传动机构为同步带传动机构；所述同步带传动机构包括传动齿轮、传动带及连接块，所述传动齿轮与所述驱动电机固定连接，所述传动带与所述传动齿轮互相啮合，所述连接块与所述传动带固定连接，所述虹膜采集装置与所述连接块固定连接。
  7. 根据权利要求1所述的虹膜采集设备，其中，所述虹膜采集装置包括外壳、红外光源及虹膜相机，所述外壳与所述传动装置固定连接，所述红外光源、虹膜相机均设置于所述外壳内。
  8. 根据权利要求3所述的虹膜采集设备，其中，所述虹膜采集装置包括外壳、红外光源及虹膜相机，所述外壳与所述传动装置固定连接，所述红外光源、虹膜相机均设置于所述外壳内。
  9. 根据权利要求6所述的虹膜采集设备，其中，所述虹膜采集装置包括外壳、红外光源及虹膜相机，所述外壳与所述传动装置固定连接，所述红外光源、虹膜相机均设置于所述外壳内。
  10. 根据权利要求7所述的虹膜采集设备，其中，所述虹膜相机的镜头为长焦距高分辨率的虹膜镜头，和/或所述虹膜采集装置还包括设置于所述外壳上的滤光片。
  11. 根据权利要求10所述的虹膜采集设备，其中，所述虹膜相机的光轴方向与所述虹膜采集装置的运动方向一致；所述虹膜采集装置还包括设置于所述外壳内的反射镜，所述反射镜与所述虹膜相机的光轴之间的夹角为45°。
  12. 一种虹膜采集设备的采集方法，其中，所述虹膜采集设备包括底座、传动装置及虹膜采集装置，所述传动装置的一端与所述底座连接、另一端与所述虹膜采集装置连接，所述传动装置带动所述虹膜采集装置朝着远离/靠近所述底座的方向运动；所述采集方法包括步骤：
    将所述虹膜采集设备放置在预定位置，所述预定位置能够对人眼进行清晰成像；
    判断人眼是否在虹膜采集装置的视野内；
    若人眼不在虹膜采集装置的视野内，则通过传动装置调节虹膜采集装置与底座之间的距离，并在人眼出现在虹膜采集装置的视野内时对人眼进行成像。
  13. 根据权利要求12所述的采集方法，其中，所述传动装置包括驱动电机和传动机构，所述驱动电机位于所述底座内，所述传动机构与所述驱动电机连接。
  14. 根据权利要求13所述的采集方法，其中，所述传动机构为滚珠丝杆传动机构；所述滚珠丝杆传动机构包括丝杆、螺母及滚珠，所述丝杆与所述驱动电机连接，所述螺母套设于所述丝杆的表面；所述丝杆的表面设有外螺纹，所述螺母的内表面设有与所述外螺纹对应的内螺纹，所述滚珠位于所述外螺纹与所述内螺纹之间，所述虹膜采集装置与所述螺母固定连接。
  15. 根据权利要求14所述的采集方法，其中，所述滚珠丝杆传动机构还包括连接套和滑块，所述滑块与所述虹膜采集装置固定连接，所述连接套一端与所述滑块固定连接、另一端与所述螺母固定连接。
  16. 根据权利要求15所述的采集方法，其中，所述滚珠丝杆传动机构还包括主齿轮和副齿轮；所述主齿轮与所述驱动电机连接，所述副齿轮与所述丝杆的端部连接，所述主齿轮与所述副齿轮互相啮合。
  17. 根据权利要求13所述的采集方法，其中，所述传动机构为同步带传动机构；所述同步带传动机构包括传动齿轮、传动带及连接块，所述传动齿轮与所述驱动电机固定连接，所述传动带与所述传动齿轮互相啮合，所述连接块与所述传动带固定连接，所述虹膜采集装置与所述连接块固定连接。
  18. 根据权利要求12所述的采集方法，其中，所述虹膜采集装置包括外壳、红外光源及虹膜相机，所述外壳与所述传动装置固定连接，所述红外光源、虹膜相机均设置于所述外壳内。
  19. 根据权利要求18所述的采集方法，其中，所述虹膜相机的镜头为长焦距高分辨率的虹膜镜头，和/或所述虹膜采集装置还包括设置于所述外壳上的滤光片。
  20. 根据权利要求19所述的采集方法，其中，所述虹膜相机的光轴方向与所述虹膜采集装置的运动方向一致；所述虹膜采集装置还包括设置于所述外壳内的反射镜，所述反射镜与所述虹膜相机的光轴之间的夹角为45°。
PCT/CN2019/123331 2018-12-07 2019-12-05 虹膜采集设备及其采集方法 Ceased WO2020114461A1 (zh)

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