CN215642822U

CN215642822U - Multi-mode face recognition all-in-one machine

Info

Publication number: CN215642822U
Application number: CN202121675400.4U
Authority: CN
Inventors: 周坤明; 彭程
Original assignee: Beijing Eyes Intelligent Technology Co ltd; Shenzhen Aiku Smart Technology Co ltd; Beijing Eyecool Technology Co Ltd
Current assignee: Beijing Eyes Intelligent Technology Co ltd; Shenzhen Aiku Smart Technology Co ltd; Beijing Eyecool Technology Co Ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-01-25
Anticipated expiration: 2031-07-22

Abstract

The utility model discloses a multi-mode face recognition all-in-one machine, which belongs to the technical field of biological feature recognition, and comprises a display screen, a middle frame and a rear shell in sequence from front to back, wherein the upper part of the middle frame is provided with an image acquisition module, and the image acquisition module comprises a motor set bracket fixedly arranged on the middle frame, a lens bracket positioned in the motor set bracket and capable of horizontally rotating, and a motor positioned on the motor set bracket and connected with the lens bracket in a driving way; one end of the lens bracket is hinged on the motor set bracket, the motor is fixedly arranged on the motor set bracket through the motor bracket, and the output shaft of the motor is in driving connection with the other end of the lens bracket; the lens bracket is fixedly provided with a face lens PCBA, an iris lens PCBA and a temperature measurement module group. The utility model can adapt to people with different heights, and can better meet the use requirements of people because the face lens and the iris lens are used simultaneously, which belongs to multi-mode recognition.

Description

Multi-mode face recognition all-in-one machine

Technical Field

The utility model relates to the technical field of biological feature recognition, in particular to a multi-mode face recognition all-in-one machine.

Background

Currently, with the rapid development of science and technology, biometric identification is gradually becoming a main and reliable way of identity authentication. The access control and attendance system (also known as automatic access control system) has the functions of personnel access, authorization, inquiry, statistics, anti-theft alarm security and the like, can be used for personnel management and attendance management, can be linked with any electromechanical equipment product and control system, is convenient for the free access of internal personnel or users, prevents external personnel from freely entering and exiting, and improves the security and protection capability.

In the existing access control attendance system, on one hand, when workers use the attendance machine to check attendance, the installation height of the attendance machine is fixed, and the attendance machine is not suitable for people with different heights, specifically, if the installation height of the attendance machine is higher, people with lower heights cannot perform biological characteristic acquisition and comparison, and if the installation height of the attendance machine is lower, people with higher heights need to tilt bodies to perform biological characteristic acquisition and comparison, so that the system is very inconvenient; on the other hand, for a single-mode access attendance machine, because fingerprint identification is contact type biological identification, when the fingerprint of a user is worn and the like, the fingerprint identification cannot pass, and the identity authentication of the user is influenced; the face recognition is used as non-contact biological recognition, and the user can perform identity recognition in an unconscious state, but the accuracy of the face recognition is lower than that of other biological recognition; the iris recognition is used as non-contact biological recognition, has high accuracy and strong safety, but has higher requirements on distance and external environment. Therefore, a single biometric device cannot meet the demands of people at the present stage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multi-mode face recognition all-in-one machine which can adapt to people with different heights and better meet the use requirements of people.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides a multi-modal facial recognition all-in-one, includes display screen, center and backshell in proper order after to in the past, wherein:

the upper part of the middle frame is provided with an image acquisition module, and the image acquisition module comprises a motor set bracket fixedly arranged on the middle frame, a lens bracket which is positioned in the motor set bracket and can horizontally rotate, and a motor which is positioned on the motor set bracket and is in driving connection with the lens bracket;

one end of the lens bracket is hinged to the motor set bracket, the motor is fixedly arranged on the motor set bracket through the motor bracket, and an output shaft of the motor is in driving connection with the other end of the lens bracket;

the utility model discloses an iris camera lens, including iris camera lens board, camera lens group, camera lens support, face camera lens group, iris camera lens group, iris camera lens group, iris camera lens group, temperature module circuit board and temperature measurement module on the temperature measurement module circuit board.

In some embodiments of the present invention, the motor support is T-shaped, and the lens support has a notch at a position corresponding to two sides of the cross bar of the T-shape;

and/or temperature measurement glass is arranged on the display screen at a position corresponding to the temperature measurement module group.

In some embodiments of the present invention, infrared lamps PCBA are disposed on two sides of the front surface of the lens holder, and each infrared lamp PCBA includes an infrared lamp panel and an infrared lamp fixed on the infrared lamp panel.

In some embodiments of the utility model, the display screen is coated with a layer of light filtering film at locations corresponding to the infrared lamp PCBA and the iris lens PCBA.

In some embodiments of the present invention, a groove is formed in an end of the lens holder opposite to the motor, a magnet is disposed in the groove, an angle sensor PCBA is disposed on an inner side wall of the middle frame at a position corresponding to the magnet, and the angle sensor PCBA includes an angle sensor circuit board and an angle sensor chip fixed on the angle sensor circuit board.

In some embodiments of the present invention, a main board is disposed in the middle of the middle frame, an interface board is disposed behind the main board, and the interface board is provided with at least one interface of a network cable interface, a wiegand signal interface, a charging interface, and a USB Type-C interface.

In some embodiments of the present invention, the face lens board, the temperature measurement module circuit board and the angle sensor circuit board are all connected to the iris lens board, and the iris lens board is connected to the main board through an FPC connection line.

In some embodiments of the utility model, the multi-modal face recognition all-in-one machine further comprises a light supplement lamp ring, the light supplement lamp ring comprises a light guide part located around the display screen and light supplement lamp beads for providing light sources for the light guide part, and the light supplement lamp beads are arranged on a light supplement lamp plate around the rear edge of the middle frame.

In some embodiments of the utility model, an opening larger than the area of the interface board and the area of the main board is disposed in a region of the supplementary lighting lamp panel corresponding to the interface board and the main board.

In some embodiments of the utility model, the lower part of the middle frame is provided with an identity card identification module and a distance sensing module, and the identity card identification module and the distance sensing module are both connected with the mainboard;

and/or a safety chip is arranged on the mainboard.

The utility model has the following beneficial effects:

according to the multi-mode face recognition all-in-one machine, the motor set bracket, the lens bracket, the motor, the face lens PCBA and the iris lens PCBA on the lens bracket and the like form an angle-adjustable image acquisition module together, the angle-adjustable image acquisition module is used for acquiring face images and iris images, and the orientation of the lens can be automatically adjusted when the multi-mode face recognition all-in-one machine is used, so that the multi-mode face recognition all-in-one machine is suitable for people with different heights; and because the face lens and the iris lens are used at the same time, the multi-mode identification is achieved, and the use requirements of people can be better met. And, be equipped with the temperature measurement module on the image acquisition module, so the temperature measurement module also can self-adaptation user's height, has strengthened user's use and has experienced. In addition, the image acquisition module is designed to be a relatively independent module, so that the installation is convenient, the module is convenient to replace integrally when a fault occurs, and the convenience of maintenance is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of the internal structure of the multi-modal face recognition all-in-one machine of the present invention;

FIG. 2 is an exploded view of the multi-modal face recognition kiosk of FIG. 1;

FIG. 3 is a schematic front view of the multi-modal face recognition kiosk of FIG. 1;

FIG. 4 is an exploded view of the image acquisition module of FIG. 1;

FIG. 5 is a schematic diagram of a back side structure of the image capturing module shown in FIG. 1;

fig. 6 is a schematic front structure diagram of the image capturing module in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a multi-mode face recognition all-in-one machine, which comprises a display screen 1, a middle frame 2 and a rear shell (not shown in the figures) from front to back as shown in figures 1-6, wherein:

an image acquisition module is arranged at the upper part of the middle frame 2, and comprises a motor set bracket 3 (specifically, as shown in fig. 2, screw holes can be arranged at the upper side and the lower side of the motor set bracket 3 and fixed on the middle frame 2 through screws), a lens bracket 4 which is positioned in the motor set bracket 3 and can horizontally rotate (namely, rotates along the central axis of the lens bracket 4 in the length direction), and a motor 5 which is positioned on the motor set bracket 3 and is in driving connection with the lens bracket 4, wherein the motor set bracket 3 is fixedly arranged on the middle frame 2; the middle frame 2 is preferably integrally formed, and the display screen 1 can be attached to the front edge (namely the edge opposite to one side of the human body) of the middle frame 2;

one end of the lens bracket 4 is hinged on the motor group bracket 3, the motor 5 is fixedly arranged on the motor group bracket 3 through the motor bracket 6 (specifically, through holes can be arranged at two extending ends of the motor bracket 6, and the motor 5 is fixed on the middle frame 2 through screws), and an output shaft of the motor 5 is in driving connection with the other end of the lens bracket 4 (specifically, for driving connection, an output shaft of the motor 5 and an output shaft connecting hole on the lens bracket 4 can be in a straight line shape, so that the lens bracket 4 is driven to rotate through the rotation of the output shaft);

a face lens PCBA (Printed Circuit Board Assembly) 7, an iris lens PCBA 8 and a temperature measurement module group 9 are fixedly arranged on the lens bracket 4, the face lens PCBA 7 comprises a face lens Board 70 and a face lens 71 fixedly arranged on the face lens Board 70, the iris lens PCBA 8 comprises an iris lens Board 80 and an iris lens 81 fixedly arranged on the iris lens Board 80, and the temperature measurement module group 9 comprises a temperature measurement module Circuit Board 90 and a temperature measurement module 91 fixedly arranged on the temperature measurement module Circuit Board 90 for measuring the body temperature of a user. In a specific arrangement, the iris lens 81 may be in the center, and the face lens 71 and the temperature measuring module 91 may be respectively on both sides of the iris lens 81.

The position reference in the present invention is a position reference with respect to a human body when the multi-modal face recognition integrated machine is used (mounted on a wall), and for example, "front" means a side facing/approaching the human body, and "rear" means a side away from the human body.

The inventor discovers at the research in-process, among the prior temperature measurement technology, requires that the user initiatively aims at the people face prompt box on the screen with the people face, and is higher to user's initiative cooperation nature requirement, and the while need stoop to the higher user of height just can the temperature measurement, need stand tiptoe to the shorter user of height just can the temperature measurement, and the temperature measurement success rate is low, and user experience is poor.

As shown in fig. 2 and 4, the motor bracket 6 is preferably T-shaped, and the positions of the lens bracket 4 corresponding to two sides of the cross bar of the T-shape are provided with notches 41, so that the motor bracket 6 is designed with a shape matched with the lens bracket 4 for limiting in the process of driving the lens bracket 4 to rotate by the motor 5, and the limiting size can be specifically realized by changing the depth of the notches 41. As shown in fig. 2-3, a temperature measurement glass 21 may be disposed on the display screen 1 at a position corresponding to the temperature measurement module group 9, so as to improve the accuracy of temperature measurement.

As shown in fig. 2 and 6, the two sides of the front surface of the lens holder 4 may be provided with an infrared lamp PCBA 10, and the infrared lamp PCBA 10 includes an infrared lamp panel and an infrared lamp fixedly arranged on the infrared lamp panel, so as to supplement light for the iris lens 81.

The positions on the display screen 1 corresponding to the infrared lamp PCBA 10 and the iris lens PCBA 8 can be coated with a filter film layer (not shown) for filtering out clutter and improving imaging quality.

In the process of driving the lens holder 4 to rotate, in order to accurately control the rotation angle of the lens holder 4, as shown in fig. 2 and fig. 4-6, a groove may be formed in an end of the lens holder 4 opposite to the motor 5, a magnet 11 is disposed in the groove, an angle sensor PCBA 12 is disposed on an inner side wall of the middle frame 2 and at a position corresponding to the magnet 11, the angle sensor PCBA 12 includes an angle sensor circuit board and an angle sensor chip fixedly disposed on the angle sensor circuit board, and the angle sensor chip cooperates with the magnet 11 to detect the rotation angle of the lens holder 4. The angle sensor circuit board can be fixed on the motor group bracket 3 through screws.

In the embodiment of the utility model, in order to reasonably utilize the internal space of the housing, the middle part of the middle frame 2 (i.e. the lower part of the image acquisition module) can be provided with the main board 13, the rear part of the main board 13 is provided with the interface board 14, specifically, the main board 13 and the interface board 14 can be fixed on the middle frame 2 through screws, and the height of the screw column supporting the interface board 14 is greater than that of the screw column supporting the main board 14. The interface board 14 may be provided with one or more of a network cable interface, a wiegand signal interface, a charging interface, and a USB Type-C interface.

For reasonable routing and confusion reduction, the human face lens board 70, the temperature measurement module circuit board 90 and the angle sensor circuit board are all connected to the iris lens board 80 (specifically, the human face lens board can be routed to the iris lens board through a conventional wire), and the iris lens board 80 is connected with the main board 13 through the FPC connecting line 20.

Considering that ambient light may be poor, the face lens often has the need of light filling, for rationally arranging the light filling device in the limited space of casing, preferably, the multi-modal facial recognition all-in-one machine further includes a light filling lamp ring, as shown in fig. 3, the light filling lamp ring can include light guide portion 15 located around display screen 1 and light filling lamp beads 16 providing light sources for light guide portion 15, and light filling lamp beads 16 are arranged on light filling lamp panel 17 around the back edge of center frame 2. Specifically, the supplementary lighting lamp panel 17 can be fixed around the middle frame 2 by screws, so that light emitted by the supplementary lighting lamp beads 16 can supplement light for the facial lens through the light guide part 15; the light guide part 15 may be integrally formed on the middle frame 2. The light guide part 15 can be made of a semi-transparent silica gel material or a transparent material. Can make the light filling lamp ring luminous soft like this, luminance is even, improves and uses experience.

In this application, can be even on the light filling lamp plate be provided with a plurality of light filling lamp pearls, the luminous luminance of light filling lamp and the interval between light filling lamp pearl, and the distance between light filling lamp and the board that is shaded from the sun is relevant, distance between light filling lamp and the board that is shaded from the sun is big more, then light filling lamp pearl can be quantity can be less, interval between the light filling lamp pearl can be big more, on the contrary, distance between light filling lamp and the board that is shaded from the sun is little less, then the quantity of light filling lamp pearl needs more, distance between the light filling lamp pearl is also little. In the application, the number of the light supplement lamp beads can be 30-40, the distance between every two adjacent lamp beads can be 12-18mm, and the distance between each lamp bead and the backlight plate can be 10-15mm, so that the light-emitting brightness of the light supplement lamp is improved.

Further, as shown in fig. 2, an opening 171 larger than the areas of the interface board 14 and the motherboard 13 may be disposed in an area of the fill light lamp panel 17 corresponding to the interface board 14 and the motherboard 13, so as to facilitate dissipation of heat generated during the operation of the motherboard 13.

In addition, the lower part of center 2 can be equipped with ID card identification module 18 and apart from the response module (not shown), ID card identification module 18 and apart from the response module all be connected with mainboard 13, wherein, ID card identification module 18 is used for brushing the ID card, compare the ID card image of gathering with user's face image, judge whether same user according to the comparison result, apart from the response module is used for when appearing the user in the preset working range of multi-modal facial recognition all-in-one, awaken the light filling lamp circle and light.

The main board 13 may be provided with a security chip (not shown) for encrypting the acquired user basic information such as the face image and the iris image to prevent the biometric features of the user from being tampered with.

The operation of the multi-modal facial recognition all-in-one machine of the embodiment shown in the figure can be referred to as follows:

when the user is in the working range of the distance sensor, the light supplement lamp ring is controlled to flash, for example, the light supplement lamp ring flashes in a breathing mode, meanwhile, the face shot is started, when the face shot detects a face, the operations of face detection, key point positioning and the like are carried out, obtaining a first angle of the lens support needing to rotate according to the difference value between the eye coordinate and the eye standard coordinate, when the lens bracket drives the face lens and the iris lens to rotate by a first angle, the iris lens is used for collecting an iris image, obtaining a second angle of the lens bracket required to rotate according to the difference value between the iris coordinate and the iris standard coordinate, when the lens bracket drives the face lens and the iris lens to rotate by a second angle, the face image is collected through the face lens, the iris image is collected through the iris lens, the collected face image is used for face recognition, and/or the collected iris image is used for iris recognition. Therefore, the multi-mode face recognition all-in-one machine based on face recognition and iris recognition can acquire face images and iris images at the same time, the lens support is driven to rotate by the motor, the multi-mode face recognition all-in-one machine can adapt to users with different heights in a self-adaptive mode, the multi-mode images can be acquired without bending or standing on feet of the users, meanwhile, the temperature measurement module is arranged, the multi-mode face recognition all-in-one machine can adapt to the users with different heights in a self-adaptive mode to measure the temperature, and the users do not need to actively align to a face prompt box on a screen.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A multi-mode face recognition all-in-one machine comprises a display screen, a middle frame and a rear shell in sequence from front to back, and is characterized in that,

2. The all-in-one multi-modal facial recognition machine according to claim 1, wherein the motor bracket is T-shaped, and notches are formed in the lens bracket at positions corresponding to two sides of a cross bar of the T-shaped;

3. The all-in-one multi-modal facial recognition machine according to claim 1, wherein infrared lamps PCBA are arranged on two sides of the front face of the lens support, and each infrared lamp PCBA comprises an infrared lamp panel and an infrared lamp fixedly arranged on the infrared lamp panel.

4. The all-in-one multi-modal facial recognition machine according to claim 3, wherein the positions on the display screen corresponding to the infrared lamp PCBA and the iris lens PCBA are coated with a filter film layer.

5. The all-in-one multi-modal facial recognition machine according to claim 3, wherein a groove is formed in one end, opposite to the motor, of the lens support, a magnet is arranged in the groove, an angle sensor PCBA is arranged on the inner side wall of the middle frame and corresponds to the magnet, and the angle sensor PCBA comprises an angle sensor circuit board and an angle sensor chip fixedly arranged on the angle sensor circuit board.

6. The all-in-one multi-modal facial recognition machine according to any one of claims 1 to 5, wherein a main board is arranged in the middle of the middle frame, an interface board is arranged behind the main board, and the interface board is provided with at least one of a network cable interface, a Wiegand signal interface, a charging interface and a USB Type-C interface.

7. The all-in-one multi-modal facial recognition machine according to claim 6, wherein the human face lens board, the temperature measurement module circuit board and the angle sensor circuit board are all connected to the iris lens board, and the iris lens board is connected with the main board through an FPC (flexible printed circuit) connecting line.

8. The all-in-one multi-modal facial recognition machine according to claim 6, further comprising a light supplement lamp ring, wherein the light supplement lamp ring comprises a light guide part located around the display screen and light supplement lamp beads providing light sources for the light guide part, and the light supplement lamp beads are arranged on a light supplement lamp panel around the rear edge of the middle frame.

9. The all-in-one machine for multi-modal facial recognition according to claim 8, wherein the light supplement lamp panel is provided with an opening having an area larger than the areas of the interface board and the main board in the area corresponding to the interface board and the main board.

10. The all-in-one multi-modal facial recognition machine according to claim 6, wherein an identity card recognition module and a distance sensing module are arranged at the lower part of the middle frame, and both the identity card recognition module and the distance sensing module are connected with the main board;

and/or a safety chip is arranged on the mainboard.