CN219179964U

CN219179964U - Palm print palm vein recognition equipment

Info

Publication number: CN219179964U
Application number: CN202320241978.1U
Authority: CN
Inventors: 姜尚文; 赵华杨; 高岩
Original assignee: Alipay Hangzhou Information Technology Co Ltd
Current assignee: Alipay Hangzhou Information Technology Co Ltd
Priority date: 2023-02-01
Filing date: 2023-02-01
Publication date: 2023-06-13
Anticipated expiration: 2033-02-01

Abstract

The application provides palm print palm vein recognition equipment. The palm print palm vein recognition device comprises a control module, a display module which is in signal connection with the control module and is used for displaying guide images, and an imaging plate which is used for converging the guide images into real images; wherein the imaging plate is parallel to the mounting surface of the palm print palm vein recognition device; the display module is used for displaying one surface of the image towards the imaging plate. In the technical scheme, the display module is adopted to display the guide image, and the light of the guide image is refracted through the imaging plate to be converged into a real image in the air, so that the position where the palm of the user is placed is guided, and the efficiency of identifying the palm information of the user is improved.

Description

Palm print palm vein recognition equipment

Technical Field

The application relates to the field of recognition equipment, in particular to palm print palm vein recognition equipment.

Background

With the rapid development of the biological recognition technology, the palm print and palm vein recognition technology has the advantages of difficult counterfeiting, high recognition rate, high recognition speed, non-contact characteristic and the like, and avoids the risks of cross infection and the like caused by contact with recognition equipment.

However, in the existing palm print palm vein recognition device, a clear image can be acquired and recognized within a certain distance due to the depth of field of a lens, and a user needs to repeatedly change the distance from the palm to the device and the gesture of the palm in the use process to recognize and pass through the palm, so that the recognition time is long, and the user experience is poor.

Disclosure of Invention

The application provides palm print palm vein recognition equipment, which realizes the position for guiding the palm of a user to be placed, and further improves the condition that the time for recognizing palm information is longer.

The application provides palm print palm vein recognition equipment, which comprises a control module, a display module and an imaging plate, wherein the display module is in signal connection with the control module and is used for displaying guide images, and the imaging plate is used for converging the guide images into real images; wherein the imaging plate is parallel to the mounting surface of the palm print palm vein recognition device; the display module is used for displaying one surface of the image towards the imaging plate.

In the technical scheme, the display module is adopted to display the guide image, and the light of the guide image is refracted through the imaging plate to be converged into a real image in the air, so that the position where the palm of the user is placed is guided, and the efficiency of identifying the palm information of the user is improved.

In a specific embodiment, the system further comprises an identification module; the recognition module comprises a camera module which is in signal connection with the control module and is used for collecting palm information, and a plurality of light supplementing lamps which are in signal connection with the control module and are circumferentially distributed around the camera module; the control module is used for controlling the on/off of the light supplementing lamps.

In the above technical scheme, the plurality of light supplementing lamps are distributed around the camera module in a surrounding mode, and when the camera module collects palm information, the plurality of light supplementing lamps distributed in a surrounding mode can uniformly supplement light to the palm.

In a specific embodiment, a plurality of the light supplement lamps face the real image.

In a specific embodiment, the light emission angles of the plurality of light-compensating lamps are each set to 90 degrees, and the edge regions where the plurality of light-compensating lamps emit light overlap.

In the above technical scheme, through setting up the luminous angle of a plurality of light filling lamps for 90 degrees, and a plurality of the luminous marginal area of light filling lamps overlaps, can make the marginal area's of every light filling lamp intensity equal with the intensity in central area, realizes the even light filling of light filling lamp to the palm.

In a specific embodiment, the angle between the plane of the display module and the plane of the imaging plate is 45 °.

In the technical scheme, the display module and the real image are axisymmetric relative to the imaging plate, so that the included angle between the plane where the display module is arranged and the plane where the imaging plate is arranged is 45 degrees, the included angle between the real image and the plane where the imaging plate is arranged is 45 degrees, and a user can conveniently place a palm.

In a specific implementation manner, the camera module comprises a first camera which is in signal connection with the control module and is used for collecting palm print information, and a second camera which is in signal connection with the control module and is used for collecting palm vein information; the first camera, the second camera and the central axis of the identification module are symmetrically arranged.

In the technical scheme, because the palm print information and the palm vein information have the characteristics of high user acceptance degree, difficult counterfeiting, high identification accuracy and the like, the identity of a user can be better identified by setting the first camera for collecting the palm print information and the second camera for collecting the palm vein information to collect the palm information of the user.

In a specific implementation manner, the lens view angles of the first camera and the second camera are respectively 75 ° -135 °, and the lens view angles of the first camera and the second camera are respectively in a range covering the whole real image.

In a specific embodiment, the vertical distance from the lenses of the first camera and the second camera to the real image is 10cm.

In a specific implementation manner, an included angle between a plane of the lenses of the first camera and the second camera and a plane of the imaging plate is 30-45 degrees.

In a specific implementation manner, the recognition module is further provided with an audio device connected with the control module in a signal manner and a plurality of ranging sensors for measuring the height and the posture of the palm; the ranging sensors are in signal connection with the control module and transmit measured data to the control module;

the control module is used for judging the data and obtaining a judging result after receiving the data, and controlling the audio device to send out prompt information corresponding to the judging result, or controlling the display module to display the prompt information corresponding to the judging result and converging the prompt information into a real image through the imaging plate.

The guiding image is displayed by the display module, and light of the guiding image is refracted by the imaging plate and converged into a real image in the air, so that the palm placement position of the user is guided. The plurality of light supplementing lamps are distributed around the camera module in a surrounding mode, and when the camera module collects palm information, the plurality of light supplementing lamps distributed in a surrounding mode can evenly supplement light to the palm, so that the palm information collected by the camera module is clearer.

Drawings

Fig. 1 is a schematic structural diagram of a palmprint palmvein recognition device according to an embodiment of the present application;

fig. 2 is a schematic diagram of an included angle in a palmprint palmvein recognition device according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of an identification module in a palmprint palmvein identification device according to an embodiment of the present application;

fig. 4 is a schematic diagram of a palm recognition area in a palm print palm vein recognition device according to an embodiment of the present application;

fig. 5 is a schematic diagram of light supplement to palm of a light supplement lamp in a palm print palm vein recognition device according to an embodiment of the present application.

In the figure: 1. an identification module; 2. a control module; 3. a display module; 4. an imaging plate; 5. real images; 6. a first camera; 7. a second camera; 8. a detection device; 9. a light supplementing lamp; 10. palm; 11. a housing; 12. a mounting surface; 13. a central region; 14. an edge region; 15. a camera module; 16. an audio device; 17. identifying an area; A. the included angle between the plane of the display module 3 and the plane of the imaging plate 4; B. the included angle between the plane of the lens of the first camera 6 and the second camera 7 and the plane of the imaging plate 4.

Detailed Description

The present application is further described in detail below by way of the accompanying drawings and examples. The features and advantages of the present application will become more apparent from the description.

The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not collide with each other.

In order to facilitate understanding of the palm print palm vein recognition equipment provided by the embodiment of the application, an application scene of the palm print palm vein recognition equipment is described first, and the palm print palm vein recognition equipment provided by the embodiment of the application is applied to a device for biological feature recognition and is used as a main structure of a device for palm brushing payment, an access control, a gate, an attendance machine and the like. In the prior art, because the clear image can be acquired and identified within a specific distance due to the depth of field of the lens of the identification device, the user needs to repeatedly change the distance from the palm to the device and the gesture of the palm in the use process to identify and pass, so that the identification time is long and the user experience is poor. Therefore, the embodiment of the application provides palm print and palm vein recognition equipment, which is used for improving the condition that a user needs to repeatedly change the distance from the palm to the equipment and the gesture of the palm in the using process, so that the recognition time is longer. The following detailed description is made with reference to the specific drawings and examples.

Referring to fig. 1 and fig. 2 together, fig. 1 shows a schematic structural diagram of a palm print palm vein recognition device provided in an embodiment of the present application, and fig. 2 shows a schematic diagram of an included angle in the palm print palm vein recognition device provided in an embodiment of the present application.

In a specific implementation manner of the embodiment of the application, the palmprint palmvein recognition device comprises a control module 2, a display module 3 which is in signal connection with the control module 2 and is used for displaying a guide image, and an imaging plate 4 which is used for converging the guide image into a real image.

In this embodiment, the control module 2 is a conventional control module that is provided with a single-chip microcomputer or a chip embedded with a software program and can implement logic judgment, operation and command execution of a control circuit and an electronic device, and the control logic is an existing control logic.

The specific structure of the display module 3 is not limited in this embodiment, and may be a structure capable of displaying an image, for example: in the present embodiment, a specific structure of the display module 3 is described as a liquid crystal display.

The display module 3 is used for displaying an image with one side facing the imaging plate 4. It should be understood that the surface of the display module 3 for displaying an image is parallel to the plane of the imaging plate 4 or the angle between the surface of the display module 3 for displaying an image and the plane of the imaging plate 4 is smaller than 90 °. For example, the included angle between the plane of the display module 3 and the plane of the imaging plate 4 is 30 °, 45 °, 50 °, 55 °, 75 °, and the like, and in the embodiment of the present application, an included angle between the plane of the display module 3 and the plane of the imaging plate 4 is 45 ° is described as an example.

It should be noted that, in a specific implementation manner of the embodiment of the present application, the imaging plate 4 is a negative refractive index glass, and the negative refractive index glass can make the light ray gather again in the air to form a real image after being deflected.

Specifically, the imaging plate 4 is disposed in parallel with the mounting surface 12 of the palm print palmar vein recognition apparatus. For convenience of use, there are various ways to install the palmprint palmvein recognition device, such as: the palm print palm vein recognition apparatus is installed in the horizontal direction or rotated 90 ° in the clockwise direction in the vertical direction, and is described in the embodiment of the present application as an example. Since the palmprint palmvein recognition apparatus is mounted in the horizontal direction, the plane in which the mount surface 12 is located is parallel to the horizontal direction, and thus the plane in which the imaging plate 4 is located is parallel to the horizontal direction.

Referring to fig. 3 and fig. 4 together, fig. 3 shows a schematic structural diagram of an identification module in a palm print palm vein identification device provided in an embodiment of the present application, and fig. 4 shows a schematic diagram of a palm identification area in the palm print palm vein identification device provided in an embodiment of the present application.

In a specific implementation of the embodiment of the present application, the palmprint palmvein recognition device further includes a recognition module 1.

Specifically, the recognition module 1 includes a camera module 15 in signal connection with the control module 2 and used for collecting palm information, and a plurality of light supplementing lamps 9 in signal connection with the control module 2 and distributed around the camera module 15. Wherein, the control module 2 is used for controlling the on/off of the light supplementing lamps 9.

The display module 3 displays a developed palm-shaped guide image when the palm print and palm vein recognition apparatus is in operation. Wherein the size of this developed palm-shaped guide image is larger than the size of a normal palm. The light rays of the guide image pass through the negative refractive index glass and then are converged into a real image 5 in the air at the other side of the negative refractive index glass. Wherein the guiding image displayed in the display module 3 is mirror-symmetrical with the real image 5 with respect to the negative refractive index glass. The palm is placed on the position of the real image 5 by the user, and after the control module 2 controls the guide image displayed in the display module 3 to be closed, the control module 2 controls the light supplementing lamps 9 to supplement light to the palm of the user. Since the light compensating lamps 9 are circumferentially distributed around the camera module 15, the light compensating lamps 9 face the real image 5. The palm in the range of the view angle of the camera module 15 can realize uniform light filling.

Referring to fig. 5, fig. 5 shows a schematic diagram of light supplement from a light supplement lamp to palm light supplement in a palm print palm vein recognition device according to an embodiment of the present application.

As an alternative, the light emission angles of the plurality of light supplement lamps 9 are each set to 90 °, and the light emission viewing angles of the plurality of light supplement lamps 9 partially overlap. Since the light compensating lamps 9 are circumferentially distributed around the camera module 15, gaps exist between the light compensating lamps 9. Since the intensity of light irradiated on the palm 10 by each light supplement lamp 9 is uneven, the intensity of light of the center region 13 is strong relative to the intensity of light of the edge region 14. Therefore, the light emission viewing angles of the plurality of light supplement lamps 9 are partially overlapped so that the light rays emitted from the plurality of light supplement lamps 9 intersect before reaching the palm 10, and the light of the edge region 14 irradiated by the different light supplement lamps 9 are superimposed together so that the intensity of the light of the superimposed edge region 14 is equal to the intensity of the light of the center region 13, so that the intensity of the light irradiated on the palm 10 is uniform. It is understood that the light emission angles of the plurality of light supplement lamps 9 may be set to the same angle or may be set to different angles.

In one specific implementation of the embodiment of the present application, the camera module 15 includes a first camera 6 in signal connection with the control module 2 and used for collecting palm print information, and a second camera 7 in signal connection with the control module 2 and used for collecting palm vein information.

Specifically, the first camera 6 and the second camera 7 are symmetrically arranged with the central axis of the identification module 1. The first camera 6 is a color RGB camera. The second camera 7 is of the infrared camera type.

Specifically, the angles of view of the lenses of the first camera 6 and the second camera 7 are set to 75-135 degrees. Illustratively, the lens view angle of the first camera 6 is set to 75 °, 90 °, 100 °, 120 °, 135 °, and the like, the lens view angle of the second camera 7 is set to 75 °, 90 °, 100 °, 120 °, 135 °, and the like, and in the embodiment of the present application, the lens view angle of the first camera 6 is set to 90 °, and the lens view angle of the second camera 7 is set to 90 ° for illustration.

The vertical distance from the lenses of the first camera 6 and the second camera 7 to the real image 5 is 5cm-10cm. The vertical distances from the lenses of the first camera 6 and the second camera 7 to the real image 5 are 5cm, 6cm, 8cm and 10cm. In the embodiment of the present application, the vertical distance from the lenses of the first camera 6 and the second camera 7 to the real image 5 is 10cm. Through setting up the camera lens field angle of first camera 6 and second camera 7 and all setting to 90, and the perpendicular distance of camera lens of first camera 6 and second camera 7 to real image 5 is 10cm for the camera lens field angle scope of first camera 6 and second camera 7 all covers whole real image 5. The palm of the user can be positioned between 9cm and 11cm from the vertical distance between the first camera 6 and the lens of the second camera 7, so that palm information can be collected.

In a specific implementation manner of the embodiment of the present application, the included angle between the planes of the lenses of the first camera 6 and the second camera 7 and the plane of the imaging plate 4 is 30 ° -45 °. For example, the angles between the planes of the lenses of the first camera 6 and the second camera 7 and the plane of the imaging plate 4 are 30 °, 35 °, 40 °, 42 °, 45 °, and the like, and in the embodiment of the present application, an angle between the planes of the lenses of the first camera 6 and the second camera 7 and the plane of the imaging plate 4 is 45 ° will be described as an example. The included angle between the plane where the lenses of the first camera 6 and the second camera 7 are arranged and the plane where the imaging plate 4 is arranged is 30-45 degrees, so that the palm information can be conveniently identified by a user by lifting the hands.

In a specific implementation of the embodiment of the present application, the recognition module 1 is further provided with an audio device 16 in signal connection with the control module 2, and a plurality of ranging sensors 8 for measuring the height and posture of the palm.

Wherein, a plurality of range finding sensors 8 are all connected with the control module 2 by signals and send measured data to the control module 2. The control module 2 judges the data after receiving the data and obtains the judging result, and the control module 2 controls the audio device 16 to send out prompt information corresponding to the judging result.

In the above-mentioned structure, the specific structure of the ranging sensor 8 is not limited in the embodiment of the present application, and may be a structure capable of detecting the distance or position of the palm, for example: laser ranging sensor, ultrasonic ranging sensor, infrared ranging sensor, millimeter wave radar, etc.

As an alternative, the detection device 8 is a laser distance measuring sensor, a plurality of which are distributed in the identification module 1. When the user sees the real image 5 of the palm on the front of the palmprint palmar vein recognition device, the user places the palm on the real image 5 in registration with the palm pattern. At this time, the laser ranging sensor measures the palm distance and palm posture and transmits the measured data to the control module 2. The control module 2 judges the data after receiving the data and obtains the judging result, and the control module 2 controls the audio device 16 to send out prompt information corresponding to the judging result, or the control module 2 controls the display module 3 to display the prompt information corresponding to the judging result and gather the prompt information into a real image through the imaging plate 4. Such as: after receiving the data, the control module 2 determines that the data does not meet the condition, and the control module 2 controls the audio device 16 to send out voice information of 'please overlap the palm with the real image' to guide the user to move the position of the palm. In the embodiment of the present application, the condition that the user palm is satisfied specifically means that the measured distance from the user palm to the recognition module 1 is consistent with the measured distance from the real image to the recognition module 1, and even if there is a small error, the error is within the allowable range.

After receiving the data, the control module 2 judges that the data meets the condition, the control module 2 controls the audio device 16 to send out voice information requesting to keep the current palm position, the control module 2 closes the display module 3, controls the palm print palm vein recognition module 1 to start a light supplementing lamp to supplement light to the palm, and collects palm print and palm vein images of the palm 10 through the color RGB camera 6 and the infrared camera 7. And comparing and identifying the acquired image with a palm print palm vein library registered on the cloud, and feeding back whether the acquired image passes the identification or not.

In another specific implementation manner of the embodiment of the application, the palm print and palm vein recognition device is further provided with a local storage device or a cloud server for storing palm print and palm vein information. When the camera module 15 collects the image, the collected image is sent to the control module 2, and the control module 2 matches the collected image with the image stored in the local storage device or the cloud server. If the matching is successful, the user identification is passed; if the matching is unsuccessful, the user identification is not passed. The control module 2 prompts the recognition result by controlling the audio device 16 or the control module 2 controls the display module 3 to display prompt information corresponding to the judgment result and the prompt information is converged into a real image through the imaging plate 4.

In one implementation of the embodiments of the present application, the palmprint palmvein recognition device further includes a housing 11. Wherein, control module 2, display module 3, identification module 1 are installed inside casing 11, are provided with the mounting hole on the casing and are used for installing imaging plate 4.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "left", "right", etc. are based on the directions or positional relationships in the working state of the present application, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, unless explicitly specified and limited otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The present application has been described in connection with the preferred embodiments, but these embodiments are merely exemplary and serve only as illustrations. On the basis of this, many alternatives and improvements can be made to the present application, which fall within the scope of protection of the present application.

Claims

1. The palm print palm vein recognition device is characterized by comprising a control module, a display module which is in signal connection with the control module and is used for displaying guide images, and an imaging plate which is used for converging the guide images into real images;

wherein the imaging plate is parallel to the mounting surface of the palm print palm vein recognition device;

the display module is used for displaying one surface of the image towards the imaging plate.

2. The palmprint palmvein recognition apparatus of claim 1, further comprising a recognition module;

the recognition module comprises a camera module which is in signal connection with the control module and is used for collecting palm information, and a plurality of light supplementing lamps which are in signal connection with the control module and are circumferentially distributed around the camera module;

the control module is used for controlling the on/off of the light supplementing lamps.

3. The palmprint palmvein recognition apparatus of claim 2, wherein a plurality of the light supplement lamps face the real image.

4. The palm print palmvein recognition apparatus according to claim 2, wherein the light emission angles of the plurality of light supplement lamps are each set to 90 degrees, and edge regions where the plurality of light supplement lamps emit light overlap.

5. The palmprint palmvein recognition device of claim 1, wherein the display module is disposed at an angle of 45 ° to a plane of the imaging plate.

6. The palmprint palmvein recognition device of claim 2, wherein the camera module includes a first camera in signal connection with the control module for collecting palmprint information, and a second camera in signal connection with the control module for collecting palmvein information; the first camera, the second camera and the central axis of the identification module are symmetrically arranged.

7. The palmprint palmvein recognition apparatus of claim 6, wherein lens view angles of the first camera and the second camera are each set to 75 ° -135 °, and lens view angles of the first camera and the second camera are each in a range covering the entire real image.

8. The palmprint palmvein recognition apparatus of claim 6, wherein the first camera and the second camera each have a vertical distance of 10cm from the real image.

9. The palmprint palmvein recognition apparatus of any one of claims 6 to 8, wherein an angle between a plane in which lenses of the first camera and the second camera are located and a plane in which the imaging plate is located is 30 ° -45 °.

10. The palmprint palmvein recognition apparatus of claim 9, wherein the recognition module is further provided with an audio device in signal connection with the control module, a plurality of ranging sensors for detecting the height and posture of the palm; the ranging sensors are in signal connection with the control module and send measured data to the control module;