Fingerprint identification sensor and intelligent door lock

Abstract

The utility model relates to the technical field of intelligent door locks, and discloses a fingerprint recognition sensor and an intelligent door lock, the fingerprint recognition sensor comprises a contact part, the contact part is suitable for being touched by fingers of a user, a groove is formed in the contact part, the depth of the groove is A, and 0.1 mm < = A < = 5mm; the groove bottom of the groove is arranged to be an identification area, the area between the groove bottom and a groove opening of the groove is a profiling area, and the profiling area is arranged to be a curved surface suitable for being matched with a finger; the identification area is a plane or a curved surface. According to the invention, the fitting degree and comfort of the sensor and the finger can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of smart door locks, and in particular to fingerprint recognition sensors and smart door locks. Background Art

[0002] With the rapid development of technologies such as mobile internet and the Internet of Things, biometrics are increasingly being used in identity authentication. Fingerprint recognition, one of the earliest and most mature biometric technologies, has become an indispensable authentication method for numerous devices and systems due to its uniqueness and immutability. A fingerprint recognition system consists of key components such as a fingerprint sensor, a feature extraction / matching module, a feature template library, and application software. During the recognition process, fingerprint matching first requires extracting the features of the fingerprint to be verified and comparing them with template fingerprints in a fingerprint template library to determine whether the two fingerprint images originate from the same finger. Therefore, the accuracy and completeness of fingerprint acquisition are crucial to the recognition results.

[0003] The recognition area of the fingerprint recognition sensor in the related art is generally set as a planar structure. In actual use, it often has problems such as poor fit with the finger and lack of comfort. These problems directly affect the success rate of fingerprint recognition and user experience. Utility Model Content

[0004] In view of this, the present application provides a fingerprint recognition sensor and a smart door lock to solve the problem of poor fit between the sensor and the finger and lack of comfort.

[0005] In a first aspect, the present application provides a fingerprint recognition sensor, comprising:

[0006] The contact portion is suitable for being touched by a user's finger. A groove is provided on the contact portion. The depth of the groove is A, wherein 0.1 mm ≤ A ≤ 5 mm.

[0007] The bottom of the groove is set as an identification area, the area between the bottom of the groove and the groove opening is a profiling area, and the profiling area is set as a curved surface suitable for matching a finger.

[0008] The identification area is configured as a plane or a curved surface.

[0009] Beneficial Effects: By providing a groove of a specific depth on the contact area, the physical fit between the fingerprint sensor and the finger is improved. By also increasing the contact area between the finger and the sensor, the quality and integrity of the fingerprint image captured are significantly enhanced, thereby improving the accuracy and speed of fingerprint recognition. The combined effect of the groove and the contoured area reduces finger slippage and displacement during the recognition process, significantly enhancing user comfort. The recognition area can be configured as a flat or curved surface, providing design flexibility to adapt to different scenarios and application requirements.

[0010] In an optional embodiment, the curvature radius of the contoured area is R, wherein 200 mm ≥ R ≥ 10 mm.

[0011] Beneficial effect: The curvature radius range of the contouring area is set to ensure that the sensor can cover and adapt to the finger shapes of most people, and achieve good fit and recognition effect regardless of the thickness of the fingers.

[0012] In an optional embodiment, when the identification area is configured as a curved surface, a curvature radius of the identification area is equal to a curvature radius of the profiling area.

[0013] Beneficial effect: When the recognition area is set as a curved surface, it has the same curvature radius as the profiling area. This consistency ensures that the finger can obtain uniform contact pressure in the entire groove area, thereby improving the clarity of the fingerprint image and the recognition accuracy.

[0014] In an optional embodiment, the identification area and the profiling area are constructed as a complete curved surface structure.

[0015] Beneficial effects: The recognition area and the profiling area are constructed as a complete curved surface structure, eliminating possible edges or mutation points, making the finger smoother when sliding or pressing, reducing friction and discomfort, and also helping to improve the stability of fingerprint recognition.

[0016] In an optional embodiment, the depth of the identification area is B, where 0.1 mm ≤ B ≤ 5 mm.

[0017] Beneficial effect: The depth range of the recognition area is set to ensure sufficient fingerprint information collection while also taking into account the comfort of finger touch, avoiding the inconvenience caused by grooves that are too deep or too shallow.

[0018] In an optional embodiment, when the identification area is set to be a plane, the diameter of the identification area is C, where 1mm≤C≤30mm.

[0019] Beneficial effect: When the recognition area is set as a plane, its diameter range is set, which not only ensures a sufficient fingerprint collection area but also controls the overall size of the sensor, making it easy to integrate into various smart door locks and other small devices.

[0020] In an optional embodiment, the profiling area is transitionally connected to the identification area.

[0021] Beneficial effect: The transition connection setting between the profiling area and the recognition area ensures a smooth transition of the finger from the profiling area to the recognition area, reduces the discomfort caused by shape changes, and also ensures the continuity and integrity of fingerprint image collection.

[0022] In an optional embodiment, the contact portion is configured as a cylindrical structure or a prismatic structure.

[0023] Beneficial effect: The contact portion is set to a cylindrical structure or a prismatic structure, which provides a variety of design options, making it easier for the fingerprint recognition sensor to be integrated into products of different styles and design concepts, thereby enhancing its market adaptability and competitiveness.

[0024] In an optional embodiment, the identification area is arranged parallel to a plane surrounded by an edge of the groove.

[0025] Beneficial effect: when performing finger press recognition, it can ensure that the recognition area can be aligned with the center position of the finger rather than the edge position, thereby increasing recognition accuracy.

[0026] In a second aspect, the present application also provides a smart door lock, comprising:

[0027] Fingerprint recognition sensor.

[0028] Beneficial effect: Because the smart door lock includes a fingerprint recognition sensor, it has the same effect as the fingerprint recognition sensor and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 This is a structural diagram of an embodiment of the present application in which the identification area is a curved surface;

[0031] Figure 2 This is a cross-sectional view of an embodiment of the present application when the identification area is a curved surface;

[0032] Figure 3 This is a schematic structural diagram of an embodiment of the present application in which the identification area is a plane;

[0033] Figure 4 This is a cross-sectional view when the identification area is a plane in the embodiment of the present application.

[0034] Description of reference numerals:

[0035] 1. Contact area; 2. Profiling area; 3. Identification area. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0037] The following combination Figures 1 to 4 , describing the embodiments of the present application.

[0038] According to an embodiment of the present application, on one hand, a fingerprint recognition sensor is provided, including a contact portion 1 .

[0039] Contact portion 1 is suitable for contact with a user's finger and is provided with a groove with a depth of A, where 0.1mm≤A≤5mm. For fingerprint recognition, the user presses their finger into the groove. The bottom of the groove is designated as identification zone 3, which is used to obtain the user's fingerprint information. The area between the bottom of the groove and the notch is contour zone 2, which is designed to be curved to fit the finger. The edge of the finger can completely align with contour zone 2, reducing deformation of the fingerprint during the pressing process. Identification zone 3 can be flat or curved, and can be used in conjunction with the curved surface of contour zone 2 for fingerprint recognition.

[0040] In this embodiment, the provision of a groove of a specific depth on contact portion 1 not only improves the physical fit between the fingerprint sensor and the finger, but also significantly enhances the quality and integrity of fingerprint image acquisition by increasing the contact area between the finger and the sensor, thereby improving the accuracy and speed of fingerprint recognition. The combined effect of the groove and contoured area 2 reduces finger slippage and displacement during the recognition process, significantly enhancing user comfort. Recognition area 3 can be configured as a flat or curved surface, providing design flexibility to adapt to different scenarios and applications.

[0041] In some embodiments, when the identification area 3 is configured as a curved surface structure, the profiling area 2 and the identification area 3 form a complete and continuous curved surface structure, and the groove depth A is the depth of the profiling area 2 and the identification area 3 as a whole, where the depth of the identification area 3 is B. The curvature radius R of the profiling area 2 is equal to the curvature radius of the identification area 3.

[0042] Optionally, A can be set to 0.1mm, B can be set to 0.1mm, and R can be set to 10mm. These three parameters define the size of the profiling area 2 and the recognition area 3. When users use the profiling area 2 and the recognition area 3 under these parameters for fingerprint recognition, the comfort and success rate can be greatly improved.

[0043] Optionally, A can be set to 0.6mm, B can be set to 0.23mm, and R can be set to 40mm. These three parameters define the size of profiling area 2 and identification area 3. When users use profiling area 2 and identification area 3 under these parameters for fingerprint recognition, the comfort and success rate can be greatly improved.

[0044] Optionally, A can be set to 0.65mm, B can be set to 0.22mm, and R can be set to 30mm. These three parameters define the size of profiling area 2 and identification area 3. When users use profiling area 2 and identification area 3 under these parameters for fingerprint recognition, the comfort and success rate can be greatly improved.

[0045] Optionally, A can be set to 0.7mm, B can be set to 0.25mm, and R can be set to 30mm. These three parameters define the size of the profiling area 2 and the recognition area 3. When users use the profiling area 2 and the recognition area 3 under these parameters for fingerprint recognition, the comfort and success rate can be greatly improved.

[0046] Optionally, A can be set to 0.8mm, B can be set to 0.3mm, and R can be set to 28mm. These three parameters define the size of the profiling area 2 and the recognition area 3. When users use the profiling area 2 and the recognition area 3 under these parameters for fingerprint recognition, the comfort and success rate can be greatly improved.

[0047] Optionally, A can be set to 5mm, B can be set to 5mm, and R can be set to 200mm. These three parameters define the size of the profiling area 2 and the recognition area 3. When users use the profiling area 2 and the recognition area 3 under these parameters for fingerprint recognition, the comfort and success rate can be greatly improved.

[0048] In some embodiments, when the identification area 3 is configured as a planar structure, the groove depth A is equal to the depth of the contoured area 2. The diameter of the identification area 3 is C.

[0049] Optionally, A can be set to 0.1mm, R to 200mm, and C to 1mm. These three parameters define the dimensions of profiling area 2 and identification area 3. When users use profiling area 2 and identification area 3 under these parameters for fingerprint recognition, the comfort and success rate can be greatly improved.

[0050] Optionally, A can be set to 0.6mm, R to 40mm, and C to 10mm. These three parameters define the dimensions of profiling area 2 and identification area 3. When users use profiling area 2 and identification area 3 under these parameters for fingerprint recognition, the comfort and success rate can be greatly improved.

[0051] Optionally, A can be set to 0.65mm, R to 30mm, and C to 8mm. These three parameters define the dimensions of profiling area 2 and identification area 3. When users use profiling area 2 and identification area 3 under these parameters for fingerprint recognition, the comfort and success rate can be greatly improved.

[0052] Optionally, A can be set to 0.7mm, R can be set to 30mm, and C can be set to 7mm. These three parameters define the size of the profiling area 2 and the recognition area 3. When users use the profiling area 2 and the recognition area 3 under these parameters for fingerprint recognition, the comfort and success rate can be greatly improved.

[0053] Optionally, A can be set to 0.8mm, R can be set to 28mm, and C can be set to 5mm. These three parameters define the size of profiling area 2 and identification area 3. When users use profiling area 2 and identification area 3 under these parameters for fingerprint recognition, the comfort and success rate can be greatly improved.

[0054] Optionally, A can be set to 5mm, R can be set to 10mm, and C can be set to 5mm. These three parameters define the size of the profiling area 2 and the recognition area 3. When users use the profiling area 2 and the recognition area 3 under these parameters for fingerprint recognition, the comfort and success rate can be greatly improved.

[0055] In some embodiments, the curvature radius of the contoured area 2 is R, wherein 200 mm ≥ R ≥ 10 mm.

[0056] In this embodiment, the curvature radius range of the profiling area 2 is set to ensure that the sensor can cover and adapt to the finger shapes of most people, and can achieve good fit and recognition effect regardless of the thickness of the fingers.

[0057] In some embodiments, the identification area 3 is arranged parallel to the plane surrounded by the edge of the groove.

[0058] In this embodiment, when performing finger press recognition, it is ensured that the recognition area can be aligned with the center position of the finger rather than the edge position, thereby increasing recognition accuracy.

[0059] In some implementations, the curvature radius of the arc region is adjusted according to ergonomics along with the depth of the groove, so as to find the arc area and curvature that best suit the thumb and index finger of the user.

[0060] In this embodiment, the dynamic change of the curvature radius of the contoured area 2 with the groove depth enables the sensor to more accurately match the natural curvature of different fingers, maintaining stable recognition performance even when the finger moves slightly or the pressure varies.

[0061] In some embodiments, when the recognition area 3 is configured as a curved surface, the curvature radius of the recognition area 3 is equal to the curvature radius of the profiling area 2 .

[0062] In this embodiment, when the recognition area 3 is set as a curved surface, it has the same curvature radius as the profiling area 2. This consistency ensures that the finger can obtain uniform contact pressure in the entire groove area, thereby improving the clarity of the fingerprint image and the recognition accuracy.

[0063] In some embodiments, the identification area 3 and the contouring area 2 are constructed as a complete curved surface structure.

[0064] In this embodiment, the recognition area 3 and the profiling area 2 are constructed as a complete curved surface structure, eliminating possible edges or mutation points, making the finger smoother when sliding or pressing, reducing friction and discomfort, and also helping to improve the stability of fingerprint recognition.

[0065] In some embodiments, the depth of the identification area 3 is B, where 0.1 mm ≤ B ≤ 5 mm.

[0066] In this embodiment, the depth range of the identification area 3 is set to ensure sufficient fingerprint information collection while also taking into account the comfort of finger touch, thereby avoiding the inconvenience caused by grooves that are too deep or too shallow.

[0067] In some embodiments, when the identification area 3 is set to be a plane, the diameter of the identification area 3 is C, where 1 mm ≤ C ≤ 30 mm.

[0068] In this embodiment, when the identification area 3 is set as a plane, its diameter range is set, which not only ensures a sufficient fingerprint collection area but also controls the overall size of the sensor, making it easy to integrate into various smart door locks and other small devices.

[0069] In some embodiments, the contoured area 2 is transitionally connected to the identification area 3 .

[0070] Optionally, a curved surface is not necessary for smooth transition between the profiling area 2 and the recognition area 3 , but the angle between the two must be close to a straight angle.

[0071] In this embodiment, the transition connection between the profiling area 2 and the recognition area 3 ensures a smooth transition of the finger when entering the recognition area 3 from the profiling area 2, reduces the discomfort caused by the shape change, and also ensures the continuity and integrity of the fingerprint image acquisition.

[0072] In some embodiments, the contact portion 1 is configured as a cylindrical structure or a prismatic structure.

[0073] In this embodiment, the contact portion 1 is configured as a cylindrical structure or a prismatic structure, providing a variety of design options, enabling the fingerprint recognition sensor to be more easily integrated into products of different styles and design concepts, thereby enhancing its market adaptability and competitiveness.

[0074] According to an embodiment of the present application, on the other hand, a smart door lock is provided, comprising a fingerprint recognition sensor.

[0075] In this embodiment, since the smart door lock includes a fingerprint recognition sensor, it has the same effect as the fingerprint recognition sensor and will not be described in detail here.

[0076] Although the embodiments of the present application have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A fingerprint recognition sensor, characterized in that: include: A contact portion (1) is adapted to be touched by a user's finger, wherein a groove is provided on the contact portion (1), and a depth of the groove is A, wherein 0.1 mm ≤ A ≤ 5 mm; The bottom of the groove is set as an identification area (3), the area between the bottom of the groove and the groove opening is a profiling area (2), and the profiling area (2) is set as a curved surface suitable for matching a finger; The identification area (3) is configured as a plane or a curved surface.

2. The fingerprint recognition sensor according to claim 1, wherein: The curvature radius of the profiling area (2) is R, wherein 200 mm ≥ R ≥ 10 mm.

3. The fingerprint recognition sensor according to claim 2, wherein: When the identification area (3) is configured as a curved surface, the curvature radius of the identification area (3) is equal to the curvature radius of the profiling area (2).

4. The fingerprint recognition sensor according to claim 3, wherein: The identification area (3) and the profiling area (2) are constructed as a complete curved surface structure.

5. The fingerprint recognition sensor according to claim 3, wherein: The depth of the identification area (3) is B, wherein 0.1 mm ≤ B ≤ 5 mm.

6. The fingerprint recognition sensor according to claim 2, wherein: When the identification area (3) is set to be a plane, the diameter of the identification area (3) is C, wherein 1mm≤C≤30mm.

7. The fingerprint recognition sensor according to claim 6, characterized in that: The profiling area (2) is transitionally connected to the identification area (3).

8. The fingerprint recognition sensor according to claim 1, wherein: The contact portion (1) is configured as a cylindrical structure or a prismatic structure.

9. The fingerprint recognition sensor according to claim 6, characterized in that: The identification area (3) is arranged parallel to the plane surrounded by the edge of the groove.

10. A smart door lock, characterized in that: include: The fingerprint recognition sensor according to any one of claims 1 to 9.

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