Intelligent face recognition equipment

Abstract

The utility model relates to intelligent face recognition equipment which comprises a fixing plate, a black and white camera, a color camera and a bi-pass lens. The fixing plate is of a cuboid structure with the thickness. The black-and-white camera is a cylinder with a certain thickness, the black-and-white camera is arranged on one side of the front face of the fixing plate, and the arrangement height of the black-and-white camera is located in the middle of the height direction of the fixing plate; the color camera is a cylinder with a certain thickness, the color camera is arranged on the other side of the front face of the fixing plate, and the setting height of the color camera is the same as that of the black and white camera. The two sets of bi-pass lenses are arranged in the black-and-white camera and the color camera respectively. By means of the arrangement, the technical problem that a traditional automatic face recognition door lock is affected by environmental factors, the face cannot be recognized, normal imaging cannot be achieved, and therefore the door lock cannot be opened is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of facial recognition technology, and in particular to an intelligent facial recognition device. Background Technology

[0002] With societal development, many door locks now use automatic facial recognition locks. These locks do not require keys; simply face the camera, and the camera scans and recognizes the person, then unlocks automatically. While these automatic facial recognition locks are intelligent, traditional locks typically use dual IR (infrared) cameras or RGB (visible light) + IR cameras. Both types are susceptible to environmental factors, sometimes failing to recognize faces and thus failing to create a proper image, resulting in the lock being unable to open. Utility Model Content

[0003] In view of this, this application provides an intelligent face recognition device that can accurately and quickly obtain face recognition results.

[0004] According to one aspect of this application, an intelligent face recognition device is provided for an intelligent face door lock, comprising a fixed plate, a monochrome camera, a color camera, and a dual-lens system; the fixed plate is a cuboid structure with thickness, and the front and back sides of the fixed plate are smooth; the monochrome camera has a certain thickness, is disposed on one side of the front of the fixed plate, and its height is located at the middle of the width direction of the fixed plate, suitable for face recognition in low-light environments; the color camera has a certain thickness, is disposed on the other side of the front of the fixed plate, and its height is the same as that of the monochrome camera, suitable for providing rich image information and multimodal face recognition; the dual-lens system is configured as two sets, respectively disposed inside the monochrome camera and the color camera, for visible light imaging and infrared imaging.

[0005] In one possible implementation, the monochrome camera includes a first housing and a monochrome camera sensor; the first housing is a hollow cylindrical structure with openings at both ends, the monochrome camera sensor is disposed inside the first housing, and a set of dual-lenses is disposed directly in front of the monochrome camera sensor.

[0006] In one possible implementation, the color camera includes a second housing and a color camera sensor; the second housing has the same shape as the first housing, the color camera sensor is disposed inside the second housing, and another set of the dual-lens is disposed directly in front of the color camera sensor.

[0007] In one possible implementation, each set of dual-pass lenses consists of two dual-pass filters, one an 850nm dual-pass filter and the other a 650nm dual-pass filter.

[0008] In one possible implementation, the color camera is a dual-channel type.

[0009] In one possible implementation, the system chip, flash memory, connector, crystal oscillator, and power chip are also included, all disposed on the back side of the mounting plate; the flash memory, connector, crystal oscillator, and power chip are all electrically connected to the system chip.

[0010] In one possible implementation, the system chip is electrically connected to the monochrome camera sensor and the color camera sensor.

[0011] In one possible implementation, a fill light is also included, which is positioned between the monochrome camera and the color camera.

[0012] In one possible implementation, a lamp driver chip is also included, which is disposed below the fill light and electrically connected to the fill light.

[0013] In one possible implementation, the lamp driver chip is electrically connected to the power supply chip and the system chip.

[0014] The beneficial effects of this utility model are as follows: by setting up a black and white camera, a color camera, and a dual-pass lens, using a dual-pass filter, and in conjunction with a face recognition algorithm, accurate and fast recognition results can be achieved. The use of a color camera ensures that rich liveness feature points can be guaranteed even in low-light conditions, improving the security of liveness detection. Furthermore, while ensuring security, it is applicable to scenarios under different lighting conditions. Attached Figure Description

[0015] Figure 1 This diagram shows a front view of a smart face recognition device according to an embodiment of this application.

[0016] Figure 2 This diagram shows a detailed rear structural view of the intelligent face recognition device according to an embodiment of this application;

[0017] Figure 3 The diagram shows a circuit diagram of an intelligent face recognition device according to an embodiment of this application. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model or simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," "linking," and "hinged" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] like Figure 1As shown, this intelligent face recognition device, used in intelligent face door locks, includes a fixed plate 100, a monochrome camera 200, a color camera 300, and a dual-lens system. The fixed plate 100 is a rectangular parallelepiped structure with thickness, and its front and back surfaces are smooth. The monochrome camera 200 is a cylinder with a certain thickness, positioned on one side of the front surface of the fixed plate 100, with its height located at the middle of the width direction of the fixed plate 100, suitable for face recognition in low-light environments. The color camera 300 is a cylinder with a certain thickness, positioned on the other side of the front surface of the fixed plate 100, with its height the same as that of the monochrome camera 200, suitable for providing rich image information and multimodal face recognition. The dual-lens system consists of two sets, one inside the monochrome camera 200 and the other inside the color camera 300, used for visible light imaging and infrared imaging, respectively. It should be noted that the side with the black-and-white camera 200 and the color camera 300 is the front side of the fixing plate 100, and the side with the chip 400 (SOC), flash memory 500 (flash), connector 600, crystal oscillator 700 (xtal) and power chip 800 is the back side of the fixing plate 100.

[0024] like Figures 1 to 2 As shown, the specific structure of this intelligent face recognition device includes a fixing plate 100, a black and white camera 200, a color camera 300, and a dual-lens. The fixing plate 100 is set to fix the black and white camera 200 and the color camera 300. The black and white camera 200 and the color camera 300 are mounted on the door lock through the fixing plate 100 and used in conjunction with the door lock. In order to better fix the black and white camera 200 and the color camera 300 to the fixing plate 100, the front of the fixing plate 100 needs to maintain a certain flatness and smoothness.

[0025] The monochrome camera 200 (IR camera) is included because it enhances recognition accuracy and security, such as in 3D face recognition. The monochrome camera 200 captures infrared light emitted by objects and converts it into visible light signals, thus capturing and displaying images. This feature allows the monochrome camera 200 to provide clear images even in low light or complete darkness, ensuring the accuracy and security of face recognition. It also enhances night vision capabilities: the monochrome camera 200 can sense and capture infrared light, meaning it can still clearly capture the scene in front of the door at night or in low-light environments. Furthermore, it enables motion detection and alarms. For example, in smart locks, the monochrome camera 200 can also be used for motion detection. When a stranger or object moves in front of the door, the monochrome camera 200 will capture this movement and trigger the alarm system. This function is significant in enhancing home security and can effectively prevent theft or intrusion. Finally, it provides real-time alarms and notifications: once the motion detection function is triggered, the smart lock will immediately send an alarm message to the user.

[0026] The inclusion of a color camera 300 (RGB) is due to its facial recognition and authentication capabilities. Facial recognition technology allows the camera to capture and process two-dimensional facial images, comparing them with pre-stored facial information to verify identity. This is particularly important in smart locks, as it allows users to quickly unlock doors using facial recognition, eliminating the need for keys or passwords, thus improving convenience and security. Liveness detection technology is also included to prevent forgery using photos or videos. By detecting subtle facial movements and expressions, it determines if the face is genuine, effectively preventing unauthorized intrusion. Real-time monitoring and recording are also possible. For example, the color camera 300 can monitor the area in front of the door in real time, capturing and recording images of visitors. This is crucial for home security, allowing users to stay informed and respond promptly. Finally, the camera automatically records all entry and exit images and timestamps, which can be used for post-event retrieval, dispute resolution, or review of events.

[0027] Both the black-and-white camera 200 and the color camera 300 are fixed to the front of the fixing plate 100, as in this embodiment, but not limited to this embodiment. The black-and-white camera 200 is set on the left side of the front of the fixing plate 100, and the color camera 300 is set on the right side of the front of the fixing plate 100. In order to ensure that the height of the face extracted by the black-and-white camera 200 and the color camera 300 is the same, the black-and-white camera 200 and the color camera 300 are set at the same height, both in the middle part of the height direction of the fixing plate 100.

[0028] The dual-pass lens is designed because it offers high light transmittance, high cutoff rate, and long lifespan for facial recognition. Since both the monochrome camera 200 and the color camera 300 require dual-pass lenses, two sets of dual-pass lenses are used: one set is located inside the monochrome camera 200, and the other set is located inside the color camera 300.

[0029] In one possible implementation, the monochrome camera 200 includes a first housing 210 and a monochrome camera sensor 220; the first housing 210 is a hollow cylindrical structure with an open bottom, the monochrome camera sensor 220 is disposed inside the first housing 210, and a set of dual-lens is disposed directly in front of the monochrome camera sensor 220. The color camera 300 includes a second housing 310 and a color camera sensor 320; the shape of the second housing 310 is the same as that of the first housing 210, the color camera sensor 320 is disposed inside the second housing 310, and another set of dual-lens is disposed directly in front of the color camera sensor 320.

[0030] Specifically, such as Figures 1 to 2 As shown, the black-and-white camera 200 has a specific structure consisting of a first housing 210 and a black-and-white camera sensor 220. The first housing 210 is disposed on the front of the fixing plate 100, and one end of the first housing 210 is connected to the fixing plate 100. The black-and-white camera sensor 220 is disposed inside the first housing 210. A set of dual-lens is disposed in front of the black-and-white camera sensor 220, and the dual-lens can detect faces through the opening at the other end of the first housing 210. The color camera 300 is similar to the black-and-white camera 200. The color camera 300 includes a second housing 310 and a color camera sensor 320. The second housing 310 is disposed on the front of the fixing plate 100, and one end of the second housing 310 is connected to the fixing plate 100. The color camera sensor 320 is disposed inside the first housing 210. Another set of dual-lens is disposed in front of the color camera sensor 320, and the other set of dual-lens can detect faces through the opening at the other end of the second housing 310. For the sake of overall appearance, the shape 310 of the second housing is the same as the shape and size of the first housing 210.

[0031] In one possible implementation, each set of double-pass lenses consists of two double-pass filters, one an 850nm double-pass filter and the other a 650nm double-pass filter.

[0032] Specifically, the two dual-pass filters are chosen at 850nm and 650nm respectively because 850nm and 650nm dual-pass filters are optical filters that can simultaneously transmit light of two specific wavelengths, 850nm and 650nm, while blocking other wavelengths. Such filters are very useful in a variety of applications, especially when it is necessary to capture two specific wavelengths of light simultaneously.

[0033] In one possible implementation, the color camera 300 is a dual-channel type.

[0034] The color camera 300 is preferably a dual-channel type because of its dual-channel light effect: this design can be used to achieve richer color changes and dynamic effects, such as achieving gradient, flashing and other effects by adjusting the brightness and color of the two RGB channels.

[0035] In one possible implementation, the system-on-a-chip (SOC) 400, flash memory 500, connector 600, crystal oscillator 700, and power supply chip 800 are also included, all disposed on the back of the mounting plate 100; the flash memory 500, connector 600, crystal oscillator 700, and power supply chip 800 are all electrically connected to the SOC 400. The SOC 400 is electrically connected to the monochrome camera sensor 220 and the color camera sensor 230.

[0036] Specifically, such as Figure 2 As shown, for overall integrity, the system also includes a system-on-a-chip (SOC) 400, flash memory 500, connector 600, crystal oscillator 700, and power supply chip 800. The SOC 400 is configured to read image signals from the monochrome image sensor 220 and the color image sensor 320; therefore, the SOC 400 is electrically connected to both the monochrome and color image sensors 220 and 230. The crystal oscillator 700 ensures the SOC 400 functions correctly. The flash memory 500 ensures data storage for the SOC 400. The power supply chip 800 provides power to the entire system; therefore, the flash memory 500, connector 600, crystal oscillator 700, and power supply chip 800 are all electrically connected to the SOC 400.

[0037] In one possible implementation, a fill light 110 is also included, positioned between the monochrome camera 200 and the color camera 300. A light driver chip 120 is also included, positioned below the fill light 110 and electrically connected to it.

[0038] Specifically, such as Figures 1 to 2As shown, to enable clearer facial recognition, a supplementary light 110 is installed between the black-and-white camera 200 and the color camera 300. A light driver chip 120 is also installed and electrically connected to the supplementary light 110 to enable its operation. Furthermore, to control the switching of the supplementary light 120, the light driver chip 120 is electrically connected to the power supply chip 800 and the system chip 400. The power supply chip 800 provides power to the supplementary light 110, and the system chip 400 controls the switching of the supplementary light 110, making the overall system more automated.

[0039] This application achieves accurate and rapid recognition results by setting up a fixed plate 100, a black and white camera 200, a color camera 300, and a dual-pass lens, using a dual-pass filter, and in conjunction with a face recognition algorithm. Furthermore, the color camera 300 is a dual-pass type, which ensures rich liveness feature points even in low-light conditions, improving the security of liveness detection and making it applicable to different lighting conditions. This effectively solves the technical problem that traditional automatic face recognition door locks are affected by environmental factors, resulting in the inability to recognize faces, leading to inability to image properly and thus preventing the door lock from opening.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A smart face recognition device for use in smart face recognition door locks, characterized in that, Includes a mounting plate, a monochrome camera, a color camera, and a dual-lens camera; The fixing plate is a cuboid structure with thickness, and the front and back of the fixing plate are smooth. The black and white camera has a certain thickness. The black and white camera is set on one side of the front of the fixed plate, and the height of the black and white camera is located in the middle part of the width direction of the fixed plate, which is suitable for face recognition in low light environment. The color camera has a certain thickness and is set on the other side of the front of the fixed plate. The height of the color camera is the same as that of the black and white camera, which is suitable for providing rich image information and multimodal face recognition. The dual-pass lens is configured as two sets, respectively located inside the monochrome camera and the color camera, for visible light imaging and infrared imaging.

2. The intelligent face recognition device according to claim 1, characterized in that, The monochrome camera includes a first housing and a monochrome camera sensor; The first housing is a hollow cylindrical structure with openings at both ends. The black and white camera sensor is disposed inside the first housing, and a set of dual-lenses is disposed directly in front of the black and white camera sensor.

3. The intelligent face recognition device according to claim 2, characterized in that, The color camera includes a second housing and a color camera sensor; The second housing has the same shape as the first housing, the color camera sensor is disposed inside the second housing, and another set of the dual-lens is disposed directly in front of the color camera sensor.

4. The intelligent face recognition device according to any one of claims 1-3, characterized in that, Each set of dual-pass lenses consists of two dual-pass filters: one is an 850nm dual-pass filter, and the other is a 650nm dual-pass filter.

5. The intelligent face recognition device according to any one of claims 1-3, characterized in that, The color camera is a dual-channel type.

6. The intelligent face recognition device according to claim 3, characterized in that, It also includes system chips, flash memory, connectors, crystal oscillators and power chips, all of which are located on the back of the mounting plate; The flash memory, the connector, the crystal oscillator, and the power chip are all electrically connected to the system chip.

7. The intelligent face recognition device according to claim 6, characterized in that, The system chip is electrically connected to the monochrome camera sensor and the color camera sensor.

8. The intelligent face recognition device according to claim 7, characterized in that, It also includes a fill light, which is positioned between the monochrome camera and the color camera.

9. The intelligent face recognition device according to claim 8, characterized in that, It also includes a lamp driver chip, which is located below the fill light and is electrically connected to the fill light.

10. The intelligent face recognition device according to claim 9, characterized in that, The lamp driver chip is electrically connected to the power supply chip and the system chip.

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