Three-dimensional face recognition equipment

Abstract

The invention relates to three-dimensional face recognition equipment which comprises a three-dimensional face recognizer, a position adjusting mechanism and a storage mechanism. The position adjusting mechanism comprises a base, a rotating seat, a supporting part, a driving shaft, a driven shaft, a pivoting shaft and a driving part, the rotating seat can rotate on the base, and the supporting part is connected to the rotating seat and drives the three-dimensional face recognizer to rotate in the horizontal plane and the vertical plane to adjust the angle. The storage mechanism comprises a linear driver, a moving seat and an opening and closing plate, the three-dimensional face recognizer can stretch out and draw back through the linear driver and go in and out of the inlet and outlet of the containing cavity, the inlet and outlet are automatically opened and closed through the opening and closing plate, and storage and use of the three-dimensional face recognizer are achieved. Double-plane adjustment is achieved through a single power source, and the storage mechanism is matched, so that the equipment is compact in structure and convenient to use, the user experience is improved, and the manufacturing and using cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of face recognition and relates to a three-dimensional face recognition device. Background Art

[0002] A 3D face recognition device is a device based on biometric technology that can identify a person based on their facial features. Because it can efficiently, accurately and reliably identify a person, it has been widely used. The most common application of a 3D face recognition device is to use it in conjunction with a gate installed at a pedestrian entrance, thereby forming a 3D face recognition device that can identify a person and selectively allow a person to pass through.

[0003] In the related art, whether the 3D face recognition device is accurately aligned with the person to be recognized will directly affect the accuracy of the recognition result. However, the position of the 3D face recognition devices used in gates and similar devices is often fixed, and there is no angle adjustment function. When the user needs to use the 3D face recognition device to recognize the identity, the user often needs to adjust his or her position to more accurately align with the 3D face recognition device, thereby reducing the user experience. Summary of the invention

[0004] In view of this, the purpose of the present invention is to solve the alignment problem of a three-dimensional face recognizer and to provide a three-dimensional face recognition device.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A three-dimensional face recognition device, comprising a three-dimensional face recognizer and a position adjustment mechanism; the position adjustment mechanism comprises a base, a rotating base, a support part, a driving shaft, a driven shaft, a pivot shaft, and a driving component;

[0007] The rotating seat is rotatably arranged on the base, and the support part is fixedly connected to the rotating seat. When the rotating seat rotates, the support part is driven to rotate in the first plane; the pivot shaft is arranged parallel to the first plane, and is rotatably arranged on the support part, and rotates in the second plane; the three-dimensional face recognizer is connected to the pivot shaft, and when the pivot shaft rotates, the three-dimensional face recognizer is driven to swing in the second plane;

[0008] The driving component is arranged in the base, one end of the driving shaft is connected to the driving component, and the other end extends into the rotating seat, and the end of the driving shaft extending into the rotating seat is provided with a coupling member, and the two ends of the coupling member are respectively a first coupling portion and a second coupling portion; the rotating seat is provided with a third coupling portion aligned with the first coupling portion; the driven shaft is rotatably arranged on the supporting portion, one end of the driven shaft is connected to the pivot shaft through a gear pair, and the other end is provided with a fourth coupling portion aligned with the second coupling portion;

[0009] The coupling piece is mounted on the driving shaft and is circumferentially fixed and axially slidably matched with the driving shaft. The coupling piece moves between a first coupling position and a second coupling position axially arranged on the driving shaft. When the coupling piece is in the first coupling position, the first coupling portion is coupled with the third coupling portion, and the driving component drives the rotating seat to rotate, thereby realizing the angle adjustment of the three-dimensional face recognizer in the first plane. When the coupling piece is in the second coupling position, the second coupling portion is coupled with the fourth coupling portion, and the driving component drives the pivot shaft to rotate, thereby realizing the angle adjustment of the three-dimensional face recognizer in the second plane.

[0010] Furthermore, the base, rotating base, driving shaft and driven shaft are coaxially arranged.

[0011] Furthermore, the third joining part is an electromagnet, and the fourth joining part is a permanent magnet; the permanent magnet is configured to apply a first magnetic force greater than the gravity of the joining part itself to the second joining part, so that the joining part can be maintained in the second joining position; the electromagnet is configured to apply a second magnetic force to the first joining part when energized, and the sum of the second magnetic force and the gravity of the joining part itself is greater than the first magnetic force.

[0012] Furthermore, the driven shaft is arranged orthogonally to the pivot shaft and is transmission-connected via a bevel gear pair.

[0013] Furthermore, a receiving cavity is provided in the rotating seat, and one end of the driving shaft extends into the receiving cavity and then connects to the coupling member; the third coupling portion is also provided in the receiving cavity and is coaxial with the driving shaft; the driven shaft is located below the pivot shaft, and the bottom end of the driven shaft passes through the supporting portion and then extends into the receiving cavity and is opposite to the driving shaft.

[0014] Furthermore, a protective cavity is provided inside the support portion, and a gear pair connecting the driven shaft and the pivot shaft is located in the protective cavity; an avoidance opening is provided on the side wall of the protective cavity; the three-dimensional face recognizer is connected to the pivot shaft through a connecting member, the connecting member passes through the avoidance opening and is connected to the pivot shaft, and the avoidance opening extends along the rotation path of the connecting member.

[0015] Furthermore, it also includes a shell for installing the position adjustment mechanism; the shell is provided with a accommodating cavity for accommodating the three-dimensional face recognizer, and the accommodating cavity is provided with a storage mechanism; the accommodating cavity is provided with an inlet and outlet; the storage mechanism is connected to the position adjustment mechanism, driving the position adjustment mechanism and the three-dimensional face recognizer to enter or extend from the inlet and outlet into or out of the accommodating cavity.

[0016] Furthermore, the storage mechanism includes a linear drive, a movable seat, and an opening and closing plate; the position adjustment mechanism is fixedly arranged at the end of the telescopic rod of the linear drive, and the movable seat is fixedly arranged at the middle part of the telescopic rod of the linear drive; there are two opening and closing plates, which are slidably arranged on the inlet and outlet, and the opening and closing plates are hinged to the movable seat through a connecting rod; when the telescopic rod of the linear drive is extended and retracted, it drives the three-dimensional face recognizer to enter and exit the inlet and outlet, and at the same time drives the movable seat to move, and drives the two opening and closing plates to slide in opposite directions on the inlet and outlet through the connecting rod, thereby opening or closing the inlet and outlet.

[0017] Furthermore, the inlet and outlet are provided with a slide rail, and the opening and closing plate is slidably matched with the inlet and outlet through the slide rail.

[0018] Furthermore, the three-dimensional face recognizer and the position adjustment mechanism are installed horizontally or vertically.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention can adjust the horizontal and vertical angles of the three-dimensional face recognizer by providing a rotating base that can rotate in a horizontal plane and a pivot axis that is provided on the rotating base and can rotate in a vertical plane, so that the user can use the three-dimensional face recognizer to identify his or her identity without adjusting his or her own position, thereby improving the user's experience when using the three-dimensional face recognizer to identify his or her identity.

[0021] 2. The present invention adds a driven shaft, a driving shaft and a coupling so that a driving shaft serving as a power source can selectively drive the rotating seat or the pivot shaft to rotate, thus realizing "one thing for multiple uses". Compared with the method of using two different power sources to respectively drive the rotating seat and the pivot shaft to rotate, the structure of the three-dimensional face recognition device is simpler and more compact, and is conducive to reducing the manufacturing and use costs of the three-dimensional face recognition device.

[0022] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 A schematic diagram of the structure of a face recognition mechanism of a three-dimensional face recognition device provided in Example 1 of the present invention.

[0025] Figure 2 This is a structural diagram of the face recognition mechanism in Example 1 from another perspective.

[0026] Figure 3 This is a cross-sectional view of the face recognition mechanism in Example 1.

[0027] Figure 4 for Figure 3 A magnified view of the local structure.

[0028] Figure 5 This is a schematic diagram of the structure of the three-dimensional face recognition device provided in Example 2.

[0029] Figure 6 This is a schematic diagram of the internal structure of a three-dimensional face recognition device in Example 2.

[0030] Figure 7 for Figure 6 A magnified view of the local structure.

[0031] Figure markings: 10-face recognition mechanism; 11-three-dimensional face recognizer; 12-base; 121-inner cavity; 13-rotating seat; 131-rotating part; 1311-accommodating cavity; 132-supporting part; 1321-protective cavity; 1322-avoidance; 14-pivot shaft; 15-driven shaft; 16-driving shaft; 17-first bevel gear; 18-second bevel gear; 19-driving component; 110-joining piece; 111-first joining part; 112-second joining part; 113-third joining part; 114-fourth joining part; 120-connecting piece; 20-housing; 21-inlet and outlet; 22-accommodating cavity; 30-linear drive mechanism; 31-moving seat; 32-connecting column; 33-linear drive; 40-opening and closing assembly; 41-opening and closing plate; 42-connecting rod; 43-slide rail. DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0033] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0034] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] Example 1

[0036] The three-dimensional face recognition device disclosed in this embodiment can adjust the angle position of the three-dimensional face recognizer 11 used to identify the user's identity, so that the user can align the three-dimensional face recognizer 11 with the user without adjusting his or her own position, thereby improving the user's experience when using the three-dimensional face recognizer 11 to identify the user's identity.

[0037] See also Figures 1 to 4 The three-dimensional face recognition device disclosed in this embodiment includes a face recognition mechanism 10, and the face recognition mechanism 10 includes a three-dimensional face recognizer 11, a base 12, a rotating base 13 and a pivot shaft 14.

[0038] In this embodiment, the three-dimensional face recognizer 11 can be a face recognizer known in the prior art that can identify the identity of a user based on a facial image by taking an image of the user's face, and will not be described in detail here.

[0039] The rotating seat 13 is rotatably connected to the base 12 so that the rotating seat 13 can rotate in a first plane relative to the base 12. Figure 3 As shown, the rotating seat 13 can be rotatably arranged on the top of the base 12 through a bearing, so that the rotating seat 13 can rotate in a first plane relative to the base 12. It can be understood that the first plane mentioned in the embodiment of the present application refers to a horizontal plane, that is, the rotating seat 13 rotatably connected to the base 12 can rotate in a horizontal plane, and the horizontal angle of the three-dimensional face recognizer 11 can be adjusted by rotating the rotating seat 13 in the horizontal plane. The specific adjustment process will be described below.

[0040] The pivot shaft 14 is connected to the rotating base 13, and the pivot shaft 14 can rotate around its own axis, and the axis of the pivot shaft 14 is parallel to the first plane (i.e., the horizontal plane). The three-dimensional face recognizer 11 is connected to the pivot shaft 14, so that when the pivot shaft 14 rotates around its own axis, the three-dimensional face recognizer 11 can rotate synchronously with the pivot shaft 14.

[0041] The axis of the pivot shaft 14 is parallel to the first plane, so when the pivot shaft 14 rotates, it will drive the three-dimensional face recognizer 11 to rotate in a plane perpendicular to the first plane (i.e., the vertical plane), thereby adjusting the vertical angle (i.e., the pitch angle) of the three-dimensional face recognizer 11. At the same time, when the rotating seat 13 rotates in the horizontal plane, it drives the pivot shaft 14 and the three-dimensional face recognizer 11 to rotate in the horizontal plane, thereby achieving the purpose of adjusting the horizontal angle of the three-dimensional face recognizer 11.

[0042] When the user reaches the 3D face recognition device and needs to use the 3D face recognition device 11 to identify the user, the user can remain in a fixed position by simply rotating the rotating seat 13 and / or the pivot shaft 14 to adjust the horizontal angle and / or vertical angle of the 3D face recognition device 11, so that the 3D face recognition device 11 can actively align with the user's face to identify the user. In this process, since the user can be identified by the 3D face recognition device 11 while remaining still, the user's experience of using the 3D face recognition device 11 to identify the user is effectively improved.

[0043] On this basis, in order to realize the rotation of the rotating seat 13 and the pivot shaft 14 in a simpler way, so as to make the structure of the entire face recognition mechanism 10 simpler and more compact, and to reduce its manufacturing and use costs as much as possible, in this embodiment, the face recognition mechanism 10 further includes a driven shaft 15 and a driving shaft 16.

[0044] Combination Figure 3 and Figure 4As shown, the driven shaft 15 is rotatably mounted on the support portion 132, the support portion 132 is fixed on the rotating seat 13, and the driven shaft 15 can rotate around its own axis, and the axis of the driven shaft 15 is perpendicular to the axis of the pivot shaft 14. At this time, the driven shaft 15 and the pivot shaft 14 are driven by a gear pair, so that when the driven shaft 15 rotates around its own axis, the pivot shaft 14 can be driven to rotate around its own axis.

[0045] It is understandable that there are at least two ways to achieve meshing transmission between the driven shaft 15 and the pivot shaft 14. The first way is to connect the driven shaft 15 and the pivot shaft 14 through a worm gear mechanism, that is, a worm gear can be coaxially arranged on the pivot shaft 14, and the driven shaft 15 can use a worm gear meshing with the worm gear on the pivot shaft 14. When the driven shaft 15 rotates, the worm gear can be driven to rotate, and then the pivot shaft 14 can be driven to rotate through the worm gear; the second way is to connect the driven shaft 15 and the pivot shaft 14 through a bevel gear mechanism. Specifically, Figure 4 As shown, a first bevel gear 17 that can rotate coaxially with the pivot shaft 14 can be sleeved on the pivot shaft 14, and the driven shaft 15 is arranged below the pivot shaft 14, and a second bevel gear 18 is provided at one end of the driven shaft 15 close to the pivot shaft 14, and the first bevel gear 17 on the pivot shaft 14 is meshed with the second bevel gear 18 on the driven shaft 15. In this way, when the driven shaft 15 rotates, the pivot shaft 14 can also be driven to rotate under the transmission action of the first bevel gear 17 and the second bevel gear 18. In addition, the second method is used to realize the meshing transmission between the driven shaft 15 and the pivot shaft 14, and there is no need to stagger the driven shaft 15 and the pivot shaft 14 in space, which is conducive to making the structure of the entire face recognition mechanism 10 more compact and smaller in size.

[0046] In this embodiment, the driving shaft 16 is coaxially arranged below the driven shaft 15, and the driving shaft 16 can rotate around its own axis, wherein the driving shaft 16 can rotate around its own axis under the drive of the driving component 19. In addition, a coupling member 110 is arranged at one end of the driving shaft 16 close to the driven shaft 15, and the coupling member 110 can be a sleeve sleeved on the driving shaft 16, and the coupling member 110 is provided with a first coupling portion 111 and a second coupling portion 112 opposite to each other. In this embodiment, the first coupling portion 111 is located below the second coupling portion 112. At this time, the rotating seat 13 is provided with a third coupling portion 113 located below the first coupling portion 111 and aligned with the first coupling portion 111, and the driven shaft 15 is provided with a fourth coupling portion 114 located above the second coupling portion 112 and aligned with the second coupling portion 112.

[0047] The coupling 110 is also configured to be able to move between a first coupling position and a second coupling position along the axial direction of the driving shaft 16. For example, the connection between the coupling 110 and the driving shaft 16 can be a key connection, so that the coupling 110 can move between the first coupling position and the second coupling position along the axial direction of the driving shaft 16 in a sliding manner, and when the driving shaft 16 rotates, it can drive the coupling 110 to rotate synchronously.

[0048] When the engaging member 110 is in the first engaging position, the first engaging portion 111 of the engaging member 110 engages with the third engaging portion 113 on the rotating seat 13 ; correspondingly, when the engaging member 110 is in the second engaging position, the second engaging portion 112 of the engaging member 110 engages with the fourth engaging portion 114 on the driven shaft 15 .

[0049] It should be noted that, through the above arrangement, it is possible to use an active shaft 16 as a power source to selectively drive the rotation of the rotating seat 13 and the pivot shaft 14, so as to adjust the horizontal angle and vertical angle of the three-dimensional face recognizer 11. Specifically, when the coupling 110 is in the first engaging position, the first engaging portion 111 of the coupling 110 is engaged with the third engaging portion 113 on the rotating seat 13, and the second engaging portion 112 of the coupling 110 is in a separated state from the fourth engaging portion 114 on the driven shaft 15. In this state, if the active shaft 16 rotates and drives the coupling 110 to rotate synchronously, the coupling 110 can drive the rotating seat 13 to rotate in the horizontal plane by the transmission action of the first engaging portion 111 and the second engaging portion 112, thereby adjusting the horizontal angle of the three-dimensional face recognizer 11. Conversely, when the coupling 110 moves from the first engaging position to the Figure 3 or Figure 4 In the second engagement position shown, the second engagement portion 112 of the engagement member 110 will engage with the fourth engagement portion 114 on the driven shaft 15, and the first engagement portion 111 of the engagement member 110 will be separated from the third engagement portion 113 on the rotating seat 13. In this state, if the driving shaft 16 rotates and drives the engagement member 110 to rotate synchronously, the engagement member 110 can drive the driven shaft 15 to rotate by means of the transmission action of the second engagement portion 112 and the fourth engagement portion 114, and the driven shaft 15 can drive the pivot shaft 14 to rotate under the transmission action of the first bevel gear 17 and the second bevel gear 18, thereby driving the three-dimensional face recognizer 11 to rotate by means of the pivot shaft 14, so as to achieve the purpose of adjusting the vertical angle of the three-dimensional face recognizer 11.

[0050] It can be seen that the three-dimensional face recognition device provided in this embodiment can not only adjust the horizontal angle and vertical angle of the three-dimensional face recognition device 11 by providing a rotating base 13 that can rotate in a horizontal plane and a pivot shaft 14 that is provided on the rotating base 13 and can rotate in a vertical plane, so that the user can use the three-dimensional face recognition device 11 to identify the identity without adjusting the user's own position, thereby improving the user's experience when using the three-dimensional face recognition device 11 to identify the identity, but also by adding a driven shaft 15, a driving shaft 16 and a coupling 110, a driving shaft 16 as a power source can selectively drive the rotating base 13 or the pivot shaft 14 to rotate, that is, "one thing for multiple uses" is realized. Compared with the method of using two different power sources to respectively drive the rotating base 13 and the pivot shaft 14 to rotate, it is conducive to making the structure of the three-dimensional face recognition device simpler and more compact, and is conducive to reducing the manufacturing and use costs of the three-dimensional face recognition device.

[0051] In order to simplify the process of the two engaging parts on the engaging member 110 engaging with the third engaging part 113 on the rotating seat 13 and the fourth engaging part 114 on the driven shaft 15 as much as possible, in this embodiment, the first engaging part 111 and the second engaging part 112 on the engaging member 110 can be made of ferromagnetic materials so that the first engaging part 111 and the second engaging part 112 can be attracted by magnetic force. Figure 4 As shown, the first engaging portion 111 and the second engaging portion 112 may be circular rings respectively disposed at two ends of the engaging member 110 and capable of being attracted by magnetic force.

[0052] At this time, the third engaging portion 113 disposed on the rotating seat 13 may be an electromagnet, and the fourth engaging portion 114 on the driven shaft 15 may be a permanent magnet. In addition, the permanent magnet is configured to apply a first magnetic force greater than the weight of the engaging member 110 to the second engaging portion 112 of the engaging member 110, so that the engaging member 110 is maintained in the second engaging position; the electromagnet is configured to apply a second magnetic force to the first engaging portion 111 when powered on, and the sum of the second magnetic force and the weight of the engaging member 110 is greater than the first magnetic force, so that the engaging member 110 can move from the second engaging position to the first engaging position.

[0053] When the electromagnet of the third engaging part 113 is not energized, since the permanent magnet serving as the fourth engaging part 114 can apply a first magnetic force greater than the gravity of the engaging part 110 itself to the second engaging part 112 of the engaging member 110, the engaging member 110 will move upward along the axial direction of the active shaft 16 to the second engaging position, so that the second engaging part 112 and the fourth engaging part 114 are adsorbed and engaged, and the first engaging part 111 is in a separated state from the third engaging part 113. In this way, when the active shaft 16 drives the engaging member 110 to rotate, the driven shaft 15 can be driven to rotate through the engaging member 110, and finally the pivot shaft 14 can be driven to rotate to adjust the vertical angle of the three-dimensional face recognition device 11; conversely, when the electromagnet serving as the third engaging part 113 is energized, the electric The magnet will apply a second magnetic force to the first engaging portion 111 of the engaging member 110, and since the sum of the second magnetic force and the gravity of the engaging member 110 itself is greater than the first magnetic force applied by the permanent magnet serving as the fourth engaging portion 114 to the second engaging portion 112, the engaging member 110 will overcome the first magnetic force under the action of the second magnetic force and its own gravity and move downward along the axial direction of the active shaft 16 to the first engaging position, so that the first engaging portion 111 and the third engaging portion 113 are adsorbed and engaged, and the second engaging portion 112 and the fourth engaging portion 114 are in a separated state. In this way, when the active shaft 16 drives the engaging member 110 to rotate, the third engaging portion 113 can be driven to rotate together with the rotating seat 13 through the engaging member 110 to adjust the horizontal angle of the three-dimensional face recognition device 11.

[0054] It can be understood that by adopting the above-mentioned method, not only can the two engaging parts of the engaging member 110 be engaged with or disengaged with the third engaging part 113 and the fourth engaging part 114 respectively in a simpler way, but also by setting the third engaging part 113 that can rotate synchronously with the rotating seat 13 as an electromagnet, it is beneficial to directly arrange a power source (such as a battery) for powering the electromagnet on the rotating seat 13 to avoid unnecessary wiring.

[0055] In this embodiment, the rotating seat 13 includes a rotating portion 131 and a supporting portion 132 disposed above the rotating portion 131. The rotating portion 131 is rotatably connected to the top of the base 12, so that the rotating portion 131 can drive the supporting portion 132 to rotate in a horizontal plane, thereby ultimately adjusting the horizontal angle of the three-dimensional face recognition device 11. In addition, the rotating portion 131 is also provided with a receiving cavity 1311.

[0056] At this time, the coupling member 110 is disposed in the receiving cavity 1311, and the top end of the driving shaft 16 extends to the receiving cavity 1311 and is connected to the coupling member 110. The third coupling portion 113 is also located in the receiving cavity 1311, and the third coupling portion 113 is coaxial with the driving shaft 16. The top end of the driving shaft 16 passes through the bottom of the rotating portion 131 and the third coupling portion 113 in sequence and is connected to the coupling member 110, and the driving shaft 16 is rotationally matched with the rotating seat 13 and the third coupling portion 113 or a gap is reserved to prevent the rotating seat 13 or the third coupling portion 113 from being directly driven to rotate when the driving shaft 16 rotates.

[0057] The pivot shaft 14 is rotatably connected to the support portion 132 , and the bottom end of the driven shaft 15 located below the pivot shaft 14 passes through the support portion 132 and extends into the accommodating cavity 1311 , and the driven shaft 15 and the support portion 132 can be rotatably connected via a bearing, and the fourth joint portion 114 is disposed at the bottom end of the driven shaft 15 .

[0058] Such a configuration is beneficial for utilizing the receiving cavity 1311 of the rotating part 131 to provide protection for components such as the coupling member 110, the third coupling part 113 and the fourth coupling part 114, so as to increase the service life of the relevant components and is beneficial for improving the aesthetics of the entire face recognition mechanism 10.

[0059] In this embodiment, a protective cavity 1321 is further provided inside the support portion 132, and the first bevel gear 17 and the second bevel gear 18 are both located in the protective cavity 1321. The three-dimensional face recognizer 11 is connected to the pivot shaft 14 through the connecting member 120, so that when the pivot shaft 14 rotates, the three-dimensional face recognizer 11 can be driven by the connecting member 120 to rotate synchronously with the pivot shaft 14, and the protective cavity 1321 is provided with an avoidance opening 1322 adapted to the connecting member 120, and the avoidance opening 1322 extends along the rotation path of the connecting member 120.

[0060] When the pivot shaft 14 rotates, the connecting member 120 will move along the extension direction of the avoidance opening 1322 to drive the three-dimensional face recognition device 11 to rotate synchronously with the pivot shaft 14 to avoid interference between the connecting member 120 and the support portion 132. At the same time, by providing the protection cavity 1321, it is beneficial to provide protection for the first bevel gear 17, the second bevel gear 18 and other components to increase the service life of the relevant components and further improve the aesthetics of the face recognition mechanism 10.

[0061] In this embodiment, the base 12 may be a hollow shell structure to define an inner cavity 121 inside the base 12. The driving component 19 may be disposed in the inner cavity 121 of the base 12 to provide protection for the driving component 19 through the inner cavity 121 and further enhance the aesthetics of the face recognition mechanism 10. The driving component 19 may be, but is not limited to, a motor. When the driving component 19 is a motor, the bottom end of the driving shaft 16 (i.e., the end away from the coupling 110) extends into the inner cavity 121 of the base 12 and is connected to the output shaft of the motor through a coupling.

[0062] Example 2

[0063] On the basis of Example 1, combined with the content described in the background technology of this invention, it can be known that a common application scenario of the three-dimensional face recognition device 11 is to be applied to the gate at the entrance of the pedestrian passage, so as to facilitate the three-dimensional face recognition device 11 to identify the identity of the user passing through the gate.

[0064] However, with regard to known gates of this type, the three-dimensional face recognition device 11 installed on the gate is always exposed to the external environment under normal circumstances, which is not conducive to the packaging and transportation of the gate. Moreover, such gates are usually arranged for use in open-air environments. In bad weather, the service life of the three-dimensional face recognition device 11 exposed to the open-air environment will also be greatly affected.

[0065] To do this, please refer to Figures 5 to 7 The three-dimensional face recognition device disclosed in this embodiment can be understood as a gate machine with a three-dimensional face recognizer 11, and the three-dimensional face recognition device disclosed in this embodiment can store the three-dimensional face recognizer 11 as needed, thereby facilitating the packaging and transportation of the three-dimensional face recognition device, and is beneficial for providing protection for the three-dimensional face recognizer 11 in bad weather, thereby increasing the service life of the three-dimensional face recognizer 11.

[0066] Specifically, combining 5 and Figure 6 As shown in the content, the three-dimensional face recognition device disclosed in this embodiment also includes a shell 20 and a linear drive mechanism 30.

[0067] In this embodiment, the housing 20 may be a shell used in a known gate, and the interior of the housing 20 defines a receiving cavity 22 having an inlet and outlet 21 , and the inlet and outlet 21 are aligned with the face recognition mechanism 10 described in the aforementioned embodiment 1.

[0068] The linear drive mechanism 30 is disposed in the accommodating cavity 22, and is configured to drive the face recognition mechanism 10 to move along the first direction, so that the face recognition mechanism 10 can enter and exit the accommodating cavity 22 through the inlet and outlet 21. The inlet and outlet 21 are disposed at the top of the housing 20. At this time, the first direction in this embodiment refers to the vertical direction, and the second direction perpendicular to the first direction to be described below refers to the horizontal direction.

[0069] Under normal conditions, the face recognition mechanism 10 is extended from the inlet and outlet 21 to the outside of the accommodating chamber 22 under the drive of the linear drive mechanism 30, so as to identify the user's identity through the three-dimensional face recognizer 11 of the face recognition mechanism 10. When the entire three-dimensional face recognition device needs to be packaged and transported, or when encountering some bad weather, the linear drive mechanism 30 can drive the face recognition mechanism 10 to move downward in the vertical direction and enter the accommodating chamber 22 through the inlet and outlet 21, thereby realizing the storage of the face recognition mechanism 10, and relying on the accommodating chamber 22 to provide protection for the face recognition mechanism 10.

[0070] On this basis, considering that in case of severe weather such as heavy rain, even if the face recognition mechanism 10 is housed in the accommodating cavity 22 of the shell 20 , rainwater may enter the accommodating cavity 22 from the inlet and outlet 21 and fall on the face recognition mechanism 10 .

[0071] To this end, in this embodiment, Figure 6 As shown, the linear drive mechanism 30 includes a moving seat 31, which is connected to the base 12 of the face recognition mechanism 10 through a connecting column 32, and the moving seat 31 can reciprocate along a first direction (that is, a vertical direction). In this way, when the moving seat 31 reciprocates along the vertical direction, it can drive the base 12 to move synchronously, thereby allowing the face recognition mechanism 10 to enter and exit the accommodating cavity 22 through the inlet and outlet 21.

[0072] This embodiment further includes two opening and closing components 40 respectively disposed on both sides of the inlet and outlet 21 and located in the accommodating cavity 22. Figure 7 As shown, a single opening and closing assembly 40 includes an opening and closing plate 41 and a connecting rod 42. The opening and closing plate 41 is configured to slide in a second direction (i.e., a horizontal direction) perpendicular to the first direction. For example, a horizontally arranged slide rail 43 can be provided beside the inlet and outlet 21, and the opening and closing plate 41 can slide in the horizontal direction by slidingly connecting the opening and closing plate 41 to the slide rail 43. The connecting rod 42 serves as a transmission component to connect the opening and closing plate 41 and the moving seat 31. Specifically, one end of the connecting rod 42 is hinged to the opening and closing plate 41, and the other end of the connecting rod 42 is hinged to the moving seat 31.

[0073] When the movable seat 31 is at the lowest position, the entire face recognition mechanism 10 is in the accommodating chamber 22, and the opening and closing plates 41 of the two opening and closing components 40 cooperate to block the inlet and outlet 21 to prevent rainwater or other foreign matter in the external environment from entering the accommodating chamber 22 through the inlet and outlet 21 as much as possible, thereby providing more reliable protection for the face recognition mechanism 10. When the face recognition mechanism 10 needs to be extended out of the accommodating chamber 22 through the inlet and outlet 21 for use, the movable seat 31 is moved upward in the vertical direction to drive the entire face recognition mechanism 10 close to the inlet and outlet 21 through the movable seat 31, and in this process, since the opening and closing plates 41 of the opening and closing components 40 are hinged to the movable seat 31 through the connecting rod 42, the opening and closing plates 41 of the two opening and closing components 40 can move in opposite directions. At this time, the opening and closing plates 41 of the two opening and closing components 40 are synchronously away from the inlet and outlet 21 to gradually open the inlet and outlet 21.

[0074] When the face recognition mechanism 10 is completely in the accommodating cavity 22, the distance between the face recognition mechanism 10 and the entrance and exit 21 should satisfy the following requirements: before the face recognition mechanism 10 reaches the entrance and exit 21 or just about to reach the entrance and exit 21, the opening and closing plates 41 of the two opening and closing components 40 have moved a sufficient distance in opposite directions and made the entrance and exit 21 in a fully open state, so that the face recognition mechanism 10 can pass through the entrance and exit 21 smoothly.

[0075] After the face recognition mechanism 10 is fully extended out of the accommodating chamber 22, the moving seat 31 stops moving upward in the vertical direction, and then the user's identity can be identified through the three-dimensional face recognition device 11 of the face recognition mechanism 10. Correspondingly, when the face recognition mechanism 10 needs to be stored in the accommodating chamber 22 for protection, the moving seat 31 moves downward in the vertical direction to drive the face recognition mechanism 10 to move downward and return to the accommodating chamber 22 through the moving seat 31. During this process, the opening and closing plates 41 of the two opening and closing components 40 move in opposite directions. After the face recognition mechanism 10 is fully stored in the accommodating chamber 22 through the inlet and outlet 21, the opening and closing plates 41 of the two opening and closing components 40 re-match to close the inlet and outlet 21.

[0076] When the face recognition mechanism 10 is just fully extended out of the accommodating cavity 22, the distance between the face recognition mechanism 10 and the entrance and exit 21 should meet the following requirements: when the face recognition mechanism 10 has not completely passed through the entrance and exit 21 to enter the accommodating cavity 22, the distance that the opening and closing plates 41 of the two opening and closing components 40 move in opposite directions is not enough to close the entrance and exit 21, so that the face recognition mechanism 10 can smoothly pass through the entrance and exit 21 to enter the accommodating cavity 22; only when the face recognition mechanism 10 completely enters the accommodating cavity 22, the opening and closing plates 41 of the two opening and closing components 40 begin to block the entrance and exit 21 until the entrance and exit 21 are completely closed.

[0077] It can be seen that, through the above-mentioned arrangement, the linear drive mechanism 30 used to drive the face recognition mechanism 10 to move in the vertical direction can also drive the opening and closing plates 41 of the two opening and closing components 40 to slide back and forth in the horizontal direction, so as to realize that when the face recognition mechanism 10 is extended out of the accommodating cavity 22 through the inlet and outlet 21, the inlet and outlet 21 is automatically opened, and when the face recognition mechanism 10 is retracted to the accommodating cavity 22 through the inlet and outlet 21, the inlet and outlet 21 is automatically closed, thereby realizing "one thing for multiple uses" again, which is conducive to further simplifying the structure of the three-dimensional face recognition device and further reducing the manufacturing and use costs of the three-dimensional face recognition device.

[0078] In order to realize the reciprocating movement of the moving seat 31 in the vertical direction, in this embodiment, the linear drive mechanism 30 includes a linear drive 33, which is configured to drive the moving seat 31 to reciprocate in the vertical direction. The linear drive 33 can be, but is not limited to, a conventional linear drive device such as an electric push rod, a cylinder or a hydraulic cylinder.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A three-dimensional face recognition device, characterized in that: It includes a three-dimensional face recognition device and a position adjustment mechanism; the position adjustment mechanism includes a base, a rotating seat, a support part, a driving shaft, a driven shaft, a pivot shaft, and a driving component; The rotating seat is rotatably arranged on the base, and the support part is fixedly connected to the rotating seat. When the rotating seat rotates, the support part is driven to rotate in the first plane; the pivot shaft is arranged parallel to the first plane, and is rotatably arranged on the support part, and rotates in the second plane; the three-dimensional face recognizer is connected to the pivot shaft, and when the pivot shaft rotates, the three-dimensional face recognizer is driven to swing in the second plane; The driving component is arranged in the base, one end of the driving shaft is connected to the driving component, and the other end extends into the rotating seat, and the end of the driving shaft extending into the rotating seat is provided with a coupling member, and the two ends of the coupling member are respectively a first coupling portion and a second coupling portion; the rotating seat is provided with a third coupling portion aligned with the first coupling portion; the driven shaft is rotatably arranged on the supporting portion, one end of the driven shaft is connected to the pivot shaft through a gear pair, and the other end is provided with a fourth coupling portion aligned with the second coupling portion; The coupling piece is mounted on the driving shaft and is circumferentially fixed and axially slidably matched with the driving shaft. The coupling piece moves between a first coupling position and a second coupling position axially arranged on the driving shaft. When the coupling piece is in the first coupling position, the first coupling portion is coupled with the third coupling portion, and the driving component drives the rotating seat to rotate, thereby realizing the angle adjustment of the three-dimensional face recognizer in the first plane. When the coupling piece is in the second coupling position, the second coupling portion is coupled with the fourth coupling portion, and the driving component drives the pivot shaft to rotate, thereby realizing the angle adjustment of the three-dimensional face recognizer in the second plane.

2. The three-dimensional face recognition device according to claim 1, characterized in that: The base, the rotating base, the driving shaft and the driven shaft are coaxially arranged.

3. The three-dimensional face recognition device according to claim 1, characterized in that: The third engaging portion is an electromagnet, and the fourth engaging portion is a permanent magnet; the permanent magnet is configured to apply a first magnetic force greater than the gravity of the engaging member itself to the second engaging portion, so that the engaging member can be maintained in the second engaging position; The electromagnet is configured to apply a second magnetic force to the first engaging portion when energized, and a sum of the second magnetic force and the gravity of the engaging member itself is greater than the first magnetic force.

4. The three-dimensional face recognition device according to claim 1, characterized in that: The driven shaft is arranged orthogonally to the pivot shaft and is transmission-connected via a bevel gear pair.

5. The three-dimensional face recognition device according to claim 1, characterized in that: A receiving cavity is provided in the rotating seat, and one end of the driving shaft extends into the receiving cavity and then connects to the coupling member; the third coupling portion is also provided in the receiving cavity and is coaxial with the driving shaft; the driven shaft is located below the pivot shaft, and the bottom end of the driven shaft passes through the supporting portion and then extends into the receiving cavity and is opposite to the driving shaft.

6. The three-dimensional face recognition device according to claim 1, characterized in that: A protective cavity is provided inside the support portion, and a gear pair connecting the driven shaft and the pivot shaft is located in the protective cavity; an escape opening is provided on the side wall of the protective cavity; the three-dimensional face recognizer is connected to the pivot shaft through a connecting member, and the connecting member passes through the escape opening and is connected to the pivot shaft, and the escape opening extends along the rotation path of the connecting member.

7. The three-dimensional face recognition device according to claim 1, characterized in that: It also includes a shell for installing the position adjustment mechanism; the shell is provided with a accommodating cavity for accommodating the three-dimensional face recognizer, and the accommodating cavity is provided with a storage mechanism; the accommodating cavity is provided with an inlet and outlet; the storage mechanism is connected to the position adjustment mechanism, driving the position adjustment mechanism and the three-dimensional face recognizer to enter or extend from the inlet and outlet into or out of the accommodating cavity.

8. The three-dimensional face recognition device according to claim 7, characterized in that: The storage mechanism includes a linear drive, a movable seat, and an opening and closing plate; the position adjustment mechanism is fixedly arranged at the end of the telescopic rod of the linear drive, and the movable seat is fixedly arranged at the middle part of the telescopic rod of the linear drive; there are two opening and closing plates, which are slidably arranged on the inlet and outlet, and the opening and closing plates are hinged to the movable seat through a connecting rod; when the telescopic rod of the linear drive is extended and retracted, the three-dimensional face recognizer is driven to enter and exit the inlet and outlet, and at the same time the movable seat is driven to move, and the two opening and closing plates are driven to slide in opposite directions on the inlet and outlet through the connecting rod, thereby opening or closing the inlet and outlet.

9. The three-dimensional face recognition device according to claim 8, characterized in that: The inlet and outlet are provided with a slide rail, and the opening and closing plate is slidably matched with the inlet and outlet through the slide rail.

10. The three-dimensional face recognition device according to claim 1, characterized in that: The three-dimensional face recognizer and the position adjustment mechanism are installed horizontally or vertically.

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