Bionic finger device and smart device

Abstract

The embodiment of the present application provides a bionic finger device and a smart device. The bionic finger device comprises a support, a flexible reflecting member, and a circuit board. The support has a through hole. The flexible reflecting member is connected to one end of the support and covers the through hole. The circuit board is connected to the other end of the support and is opposite to the flexible reflecting member. The circuit board is provided with a light source and an image acquisition module. The light source is used for emitting light to the flexible reflecting member. The light intensity of the reflected light is related to the deformation of the flexible reflecting member. The light emitted by the light source forms reflected light after being reflected by the flexible reflecting member. The image acquisition module is used for acquiring the reflected light when the flexible reflecting member is pressed, and forming an image of the flexible reflecting member when the flexible reflecting member is pressed according to the light intensity of the reflected light. The bionic finger device can realize the function of tactile perception.

Description

Technical Field

[0001] This application belongs to the field of artificial intelligence device technology, specifically relating to a bionic finger device and an intelligent device. Background Technology

[0002] With the development of artificial intelligence technology, the functions of robots and other intelligent devices are becoming increasingly powerful. Correspondingly, the tasks that intelligent devices can perform are becoming more sophisticated. For example, intelligent devices may be used for assembly operations and handling fragile items, or to assist humans in various basic or complex tasks in different environments (e.g., agriculture, home, disability assistance). In specific applications, during the performance of sophisticated tasks, intelligent devices often need to possess a certain degree of tactile perception to quickly adapt to different environments. Therefore, there is an urgent need to add a component with tactile perception capabilities to intelligent devices to realize tactile sensing functionality. Utility Model Content

[0003] This application aims to provide a bionic finger device and a smart device to solve the problem that components of existing smart devices lack tactile sensing capabilities.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] In a first aspect, this application discloses a bionic finger device, the bionic finger device comprising:

[0006] The bracket has a through hole;

[0007] A flexible reflector, which is connected to one end of the bracket and blocks the through hole;

[0008] The circuit board is connected to the other end of the bracket and is opposite to the flexible reflector. The circuit board is equipped with a light source and an image acquisition module. The light source is used to emit light to the flexible reflector. The light emitted by the light source is reflected by the flexible reflector to form reflected light. The intensity of the reflected light is related to the deformation of the flexible reflector. The image acquisition module is used to acquire the reflected light when the flexible reflector is under pressure and to form an image of the flexible reflector under pressure based on the intensity of the reflected light.

[0009] Optionally, the flexible reflector is a semi-transparent elastomer layer.

[0010] Optionally, the translucent elastomer layer satisfies one or more of the following conditions:

[0011] The translucent elastomer layer is made of silicone.

[0012] The Shore hardness of the translucent elastomer layer is 0-45 degrees.

[0013] The thickness of the translucent elastomer layer is 0.2 mm to 1 mm.

[0014] Optionally, the bionic finger device further includes a flexible light-shielding element connected to the flexible reflector on the side away from the circuit board.

[0015] Optionally, the flexible light-shielding element is a black silicone layer.

[0016] Optionally, at least a portion of the flexible reflector and at least a portion of the flexible light shield protrude toward the side away from the circuit board.

[0017] Optionally, the bionic finger device further includes: a transparent base plate and a flexible support member; wherein,

[0018] The transparent base plate is located between the flexible reflector and the circuit board and is connected to the bracket. The transparent base plate, the bracket, and the flexible reflector enclose a receiving space.

[0019] The flexible support is filled within the accommodating space.

[0020] Optionally, the inner wall of the bracket is provided with a support portion extending toward the center of the through hole, and the transparent base plate overlaps the support portion.

[0021] Optionally, the flexible support is a transparent silicone layer.

[0022] Optionally, the flexible support and the transparent base plate are integrally formed, or the flexible support and the transparent base plate are separate structures.

[0023] Optionally, the light source is a ring-shaped light source;

[0024] Alternatively, there may be multiple light sources, which are evenly distributed around the circumference of the through-hole.

[0025] Optionally, the light source is tilted toward the radial edge of the circuit board.

[0026] Optionally, the tilt angle between the light source and the circuit board is 30° to 45°.

[0027] Secondly, this application also discloses a smart device, which includes the bionic finger device described in any of the above claims.

[0028] In this embodiment, the flexible reflector in the bionic finger device can be used to contact a target object. When the flexible reflector contacts the target object, it deforms, and the intensity of the light reflected by the flexible reflector changes accordingly. Therefore, by emitting light to the flexible reflector through the light source and acquiring the intensity of the reflected light when the flexible reflector is pressed through the image acquisition module, an acquired image can be generated. Based on image analysis, the contact position, contact area, and contact force between the flexible reflector and the target object can be obtained, enabling the bionic finger device to achieve tactile perception. This better facilitates human-computer interaction and enhances the tactile perception function of smart devices using the bionic finger device.

[0029] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0031] Figure 1 This is a schematic diagram of the structure of the bionic finger device described in the embodiments of this application;

[0032] Figure 2 This is a schematic diagram of the layout of a lamp source on a circuit board according to an embodiment of this application.

[0033] Reference numerals: 10-bracket, 101-support part, 1011-avoidance hole, 11-flexible reflector, 12-circuit board, 13-light source, 14-image acquisition module, 15-flexible light shield, 16-transparent base plate, 17-flexible support, 18-supporting bottom shell. Detailed Implementation

[0034] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals 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 are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0035] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "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 and 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.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] This application provides a bionic finger device that can be used in intelligent devices such as robots and robotic arms. Specifically, the bionic finger device can be used to directly contact a target object.

[0039] Reference Figure 1 The diagram shows a structural schematic of the bionic finger device described in an embodiment of this application. Figure 1As shown, the bionic finger device includes: a support 10 with a through hole; a flexible reflector 11 connected to one end of the support 10 and blocking the through hole; and a circuit board 12 connected to the other end of the support 10 and opposite to the flexible reflector 11. The circuit board 12 is provided with a light source 13 and an image acquisition module 14. The light source 13 can be used to emit light to the flexible reflector 11. The light emitted by the light source 13 is reflected by the flexible reflector 11 to form reflected light. The light intensity of the reflected light is related to the deformation of the flexible reflector 11. The image acquisition module 14 is used to acquire the reflected light when the flexible reflector 11 is pressed, and to form an image of the flexible reflector 11 under pressure based on the light intensity of the reflected light.

[0040] In this embodiment, the flexible reflector 11 in the bionic finger device can be used to contact a target object. When the flexible reflector 11 contacts the target object, it deforms, and the intensity of the light reflected by the flexible reflector 11 changes accordingly. Therefore, by emitting light to the flexible reflector 11 through the light source 13 and acquiring the intensity of the reflected light when the flexible reflector 11 is pressed through the image acquisition module 14, an acquired image can be generated. Based on image analysis, the contact position, contact area, and contact force between the flexible reflector 11 and the target object can be obtained, enabling the bionic finger device to achieve tactile perception. This better facilitates human-computer interaction and enhances the tactile perception function of smart devices using the bionic finger device.

[0041] In practical applications, the bracket 10 mainly serves to support the flexible reflector 11 and the circuit board 12. To facilitate light transmission without affecting image acquisition by the image acquisition module 14, a through hole for light transmission can be provided inside the bracket 10. The bracket 10 can be made of materials with a certain strength, such as plastic or metal, to achieve reliable support for the flexible reflector 11 and the circuit board 12.

[0042] In specific applications, the flexible reflector 11 is made of a material capable of flexible deformation. During the contact process between the flexible reflector 11 and the target object, the contact force exerted by the target object on the flexible reflector 11 causes deformation at the contact point. The greater the contact force, the greater the deformation of the flexible reflector 11. When the light source 13 projects light onto the flexible reflector 11, the reflected light intensity differs between the deformed and undeformed locations, resulting in different brightness levels in the image formed by the image acquisition module 14. Furthermore, for deformed areas, different degrees of deformation lead to different reflected light intensities, consequently resulting in different image brightness levels for those areas obtained by the image acquisition module 14.

[0043] For example, when the flexible reflector 11 is not in contact with the target object, and the light source 13 emits light towards the flexible reflector 11, the light will be reflected on the flexible reflector 11 to obtain a smooth and complete image. When the flexible reflector 11 is in contact with the target object, different images can be acquired depending on the contact position and the magnitude and direction of the contact force.

[0044] Because the contact position and / or contact force between the flexible reflector 11 and the target object are different, the intensity of the light reflected from the flexible reflector 11 varies. Therefore, the location and brightness of the deformation on the flexible reflector 11 in the image acquired by the image acquisition module 14 will differ. Thus, based on the location and brightness of the deformation on the flexible reflector 11, the contact position and the magnitude and direction of the contact force can be determined, achieving the function of tactile perception. Typically, the light intensity reflected by the flexible reflector 11 decreases at the location touched or pressed by the target object, resulting in a decrease in the brightness of the image at that location in the image acquired by the image acquisition module 14. Furthermore, the greater the contact or pressing force, the more significant the decrease in the intensity of the reflected light, and the lower the brightness of the image at that location. As the contact or pressing force further increases, the difference in brightness between the central area and the edge of the image formed at the deformation location becomes more pronounced, and the white outline formed at the edge of the deformation location becomes more obvious. Thus, by recognizing the outline and brightness of the area of ​​brightness change, it is easy to determine the contact position of the target object on the flexible reflector 11, as well as the magnitude and direction of the contact force.

[0045] In practical applications, since the bionic finger device can determine the contact position and the magnitude and direction of the contact force, when the bionic finger device is applied to a smart device, during the human-computer interaction process, the robotic arm controlling the bionic finger device can be given corresponding adjustment commands based on the changes in the contact position and contact force, thereby adjusting the operation of the bionic finger device in real time, realizing adaptive interactive actions of the simulated finger, better realizing human-computer interaction, and improving the tactile perception function of the smart device using the bionic finger device.

[0046] In some optional embodiments of this application, the flexible reflector 11 can be a semi-transparent elastomer layer, which can be made of a semi-transparent material that can undergo elastic deformation. In this way, after receiving the light emitted by the light source 13, part of the light can pass through the flexible reflector 11, while the other part cannot pass through the flexible reflector 11 and is reflected by the flexible reflector 11 to the image acquisition module 14, thereby forming an image of the flexible reflector 11.

[0047] Optionally, the translucent elastomer layer is made of silicone, which allows the translucent elastomer to undergo elastic deformation and is also easy to process. In specific applications, two or more different types of silicone can be mixed to obtain a translucent silicone. Of course, those skilled in the art can also use other translucent colloids to process the translucent elastomer layer. This application does not specifically limit the material of the translucent elastomer layer.

[0048] Optionally, the Shore hardness of the translucent elastomer layer is 0-45 degrees, that is, the hardness of the translucent elastomer layer can be adjusted according to specific application scenarios.

[0049] For example, when the bionic finger device needs to perform highly sensitive tactile sensing, the hardness of the translucent elastomer layer can be 0 degrees. In this way, the translucent elastomer layer can deform under minute contact forces to achieve tactile sensing.

[0050] For example, when the bionic finger device needs to perform low-sensitivity tactile perception, the hardness of the translucent elastomer layer can be 45 degrees. In this way, the translucent elastomer layer needs to deform under a large contact force to achieve tactile perception.

[0051] In specific applications, those skilled in the art can set the hardness of the translucent elastomer layer to any value between 0 and 45 degrees according to the usage scenario of the bionic finger device. This application embodiment does not specifically limit the hardness of the translucent elastomer layer.

[0052] Optionally, the thickness of the translucent elastomer layer is 0.2 mm to 1 mm to balance good processing performance and good tactile perception. For example, the thickness of the translucent elastomer layer can be 0.2 mm, 0.4 mm, 0.75 mm, or 1 mm, etc., and the embodiments of this application do not specifically limit the thickness of the translucent elastomer layer.

[0053] like Figure 1 As shown, the bionic finger device may further include a flexible light-shielding member 15, which is connected to the flexible reflector 11 on the side away from the circuit board 12. The flexible light-shielding member 15 can be used to block light from the outside of the flexible reflector 11, preventing external light from interfering with image acquisition. Optionally, the flexible light-shielding member 15 can be a black silicone layer made of black silicone to achieve the light-shielding effect. Specifically, as... Figure 1 As shown, the flexible light-shielding member 15 can also block the flexible reflector 11 around its perimeter to prevent stray light from entering the flexible reflector 11 from the circumference and interfering with image acquisition.

[0054] It should be noted that, in practical applications, the flexible light-shielding component 15 can also be made of other light-shielding silicone materials such as dark blue or brown. This application embodiment does not specifically limit the color of the flexible light-shielding component 15.

[0055] In some optional embodiments of this application, at least a portion of the flexible reflector 11 and at least a portion of the flexible light-shielding member 15 protrude toward the side away from the circuit board 12, so that the flexible light-shielding member 15 and the flexible reflector can contact the target object, and after contact with the target object, generate sufficient deformation to be captured by the image acquisition module 14. Optionally, the flexible light-shielding member 15 and the flexible reflector 11 can be designed with reference to the fingertip of a finger, that is, protruding outward in a semi-circular shape, so as to achieve the visual effect of a bionic finger device. Of course, in practical applications, the flexible light-shielding member 15 and the flexible reflector 11 can also be set to a rectangular, circular, or other shape protruding outward, depending on the actual situation. This application does not specifically limit the shape of the flexible light-shielding member 15 and the flexible reflector 11.

[0056] like Figure 1 As shown, the bionic finger device may further include: a transparent base plate 16 and a flexible support member 17; wherein, the transparent base plate 16 is located between the flexible reflector and the circuit board 12 and is connected to the bracket 10, and the transparent base plate 16, the bracket 10 and the flexible reflector 11 enclose a receiving space; the flexible support member 17 fills the receiving space.

[0057] In practical applications, the transparent base plate 16 primarily serves to support the flexible support member 17, which in turn supports the flexible reflector 11 and the flexible light-shielding member 15. To facilitate light transmission without affecting image acquisition by the image acquisition module 14, the transparent base plate 16 also needs to be light-transmitting. Therefore, the transparent base plate 16 can be made of light-transmitting materials such as acrylic, glass, or transparent plastic. Due to the supporting role of the flexible support member 17, the flexible reflector 11 can better maintain its shape and improve the speed of recovery after deformation. This facilitates obtaining higher-quality images and better determining the contact position, magnitude, and direction of the contact force between the flexible reflector 11 and the target object.

[0058] Specifically, the flexible support 17 can be made of flexible transparent silicone, for example, it can be made of AB silicone made of vinyl monomers with additives such as silica, so that it can have both the effect of flexible support and the property of transparency, which is conducive to the passage of light.

[0059] like Figure 1As shown, the inner wall of the bracket 10 is provided with a support portion 101 extending toward the center of the through hole. The support portion 101 can be arranged in a continuous ring along the inner wall of the through hole, or multiple support portions 101 can be arranged at intervals. The transparent base plate 16 overlaps the support portion 101. The support portion 101 can be used to support the transparent base plate 16 to achieve reliable support for the transparent base plate 16. In specific applications, the support portion 101 can be provided with a clearance hole 1011 or a clearance ring at a position opposite to the light source 13 to prevent the support portion 101 from blocking the light emitted by the light source 13.

[0060] In specific applications, the transparent base plate 16 can also be connected to the bracket 10 by adhesive or other connection methods. This application embodiment does not specifically limit the connection method of the transparent base plate 16 on the bracket 10.

[0061] Optionally, the flexible support 17 and the transparent base plate 16 are integrally molded to enhance the reliability of the connection between them. During the processing of the flexible support 17, the transparent base plate 16 can be first connected to the bracket 10. Then, the aforementioned AB silicone is placed into the receiving space formed by the transparent base plate 16 and the bracket 10, and allowed to cure, thus forming the flexible support 17 on the transparent base plate 16.

[0062] Alternatively, the flexible support 17 and the transparent base plate 16 can be separate structures. That is, the flexible support 17 and the transparent base plate 16 can be manufactured separately, and then the flexible support 17 can be connected to the transparent base plate 16. When the flexible support 17 and the transparent base plate 16 are separate structures, the structures of both the flexible support 17 and the transparent base plate 16 can be relatively simple.

[0063] In some optional embodiments of this application, the light source 13 is a ring-shaped light source, and the center of the ring-shaped light source may coincide with the center of the through hole on the bracket 10. The light emitted by the ring-shaped light source can be uniformly projected onto the flexible reflector 11 through the through hole to improve the brightness uniformity of the image acquired by the image acquisition module 14.

[0064] For example, the ring-shaped light source can be a ring-shaped light strip, a ring-shaped light bar, etc. The specific content of the ring-shaped light source is not limited in the embodiments of this application.

[0065] In some alternative embodiments of this application, the number of light sources 13 can be multiple, and the multiple light sources 13 are evenly distributed around the circumference of the through hole. In this way, when all the multiple light sources 13 are lit, the multiple light sources 13 can project light evenly onto the flexible reflector 11 from the circumference of the through hole, so that the brightness of the image acquired by the image acquisition module 14 is more uniform.

[0066] For example, the number of light sources 13 can be 2, 3, 4 or 8, etc. This application embodiment does not specifically limit the number of light sources 13.

[0067] Reference Figure 2 This diagram illustrates the layout of a light source on a circuit board according to an embodiment of this application. Figure 2 As shown, the light source 13 is tilted toward the radial edge of the circuit board 12 so that the light from the light source 13 onto the flexible reflector 11 can be as uniform as possible, thereby further improving the uniformity of the imaging brightness of the image acquisition module 14.

[0068] In practical applications, when the light source 13 is not tilted, most of the light emitted by the light source 13 may be concentrated and projected onto the central area of ​​the flexible reflector 11 through the central region of the through-hole. This results in more light being reflected from the central region of the flexible reflector 11, while less light is reflected from the edge region. Consequently, the image acquired by the image acquisition module 14 will exhibit a defect of being bright in the center and dark at the edges. In this embodiment, by tilting the light source 13 toward the radial edge of the circuit board 12, excessive concentration of light emitted by the light source 13 in the central region of the flexible reflector 11 can be avoided. The light is projected onto the area of ​​the flexible reflector 11 between the edge and the center, thereby improving the uniformity of the light projected onto the flexible reflector 11. This, in turn, improves the uniformity of the imaging brightness of the image acquisition module 14.

[0069] Optionally, the light source 13 can be connected to the circuit board 12 by means of welding, conductive adhesive bonding, or other connection methods. The tilt angle α between the light source 13 and the circuit board 12 is 30° to 45°. This improves both the uniformity of the light projected from the light source 13 onto the flexible reflector 11 and the reliability of the connection between the light source 13 and the circuit board 12.

[0070] It should be noted that in specific applications, when the light source 13 is positioned close to the edge region of the through hole, the light source 13 can project light evenly onto the flexible reflector 11 without being tilted. Therefore, the light source 13 can also be positioned parallel to the circuit board 13.

[0071] like Figure 1 As shown, in some optional embodiments, the bionic finger device may further include a support base 18, which may be disposed at the bottom of the circuit board 12 to support the circuit board 12.

[0072] Specifically, in some optional embodiments, the image acquisition module 14 may include a lens and an image sensor, the circuit board 12 has an opening, one end of the image acquisition module 14 with the lens can be snapped into the opening of the circuit board 12, the image sensor is disposed on one side of the circuit board 12, and a support structure surrounding the lens may also be disposed around the opening on the circuit board 12.

[0073] In some alternative embodiments, the image acquisition module 14 can be integrally mounted on the circuit board 12, that is, the lens and image sensor in the image acquisition module 14 are connected as a whole to one side of the circuit board 12. This application does not specifically limit the connection method of the image acquisition module 14 on the circuit board 12.

[0074] The following is a manufacturing example of the bionic finger device described in this application embodiment:

[0075] First, a bracket 10 with a through hole can be provided. Then, a transparent base plate 16 is placed into the through hole and adhered to the through hole. Next, AB silicone is placed inside the shell and allowed to cure statically to avoid incomplete curing and air bubbles, resulting in a flexible support 17.

[0076] Then, a semi-permeable silicone layer is covered on the flexible support 17. The semi-permeable silicone layer is also made of AB type silicone, or other semi-permeable adhesives can be used. Let it stand to cure completely to obtain the flexible reflector 11.

[0077] Next, a light-shielding layer is applied to the outermost layer of the flexible reflector 11. In this example, it is made of a mixture of transparent AB silicone and black material. Other colored silicone can also achieve a similar effect. This layer is evenly applied to the surface of the flexible reflector 11 to obtain the flexible light-shielding element 15. This light-shielding element serves to shield against ambient light, preventing interference from external light on the acquired image. To make the surface more uniform and the appearance more aesthetically pleasing, a casing tool similar to that described in the previous steps can be used.

[0078] Finally, circuit board 12, image acquisition module 14 and light source 13 are installed at the bottom of bracket 10. In order to protect circuit board 12 and functional components on circuit board 12, a bottom shell can be added to the bottom of circuit board 12 after the circuit board 12 is assembled. The material of the bottom shell can be plastic or metal, etc. This application embodiment does not specifically limit the material of the bottom shell.

[0079] In summary, the bionic finger device described in the embodiments of this application may include at least the following advantages:

[0080] In this embodiment, the flexible reflector in the bionic finger device can be used to contact a target object. When the flexible reflector contacts the target object, it deforms, and the intensity of the light reflected by the flexible reflector changes accordingly. Therefore, by emitting light to the flexible reflector through the light source and acquiring the intensity of the reflected light when the flexible reflector is pressed through the image acquisition module, an acquired image can be generated. Based on image analysis, the contact position, contact area, and contact force between the flexible reflector and the target object can be obtained, enabling the bionic finger device to achieve tactile perception. This better facilitates human-computer interaction and enhances the tactile perception function of smart devices using the bionic finger device.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0082] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A bionic finger device, characterized in that, The bionic finger device includes: A bracket (10) having a through hole; A flexible reflector (11) is connected to one end of the bracket (10) and blocks the through hole; The circuit board (12) is connected to the other end of the bracket (10) and is opposite to the flexible reflector (11). The circuit board (12) is provided with a light source (13) and an image acquisition module (14). The light source (13) is used to emit light to the flexible reflector (11). The light emitted by the light source (13) is reflected by the flexible reflector (11) to form reflected light. The light intensity of the reflected light is related to the deformation of the flexible reflector (11). The image acquisition module (14) is used to acquire the reflected light when the flexible reflector (11) is under pressure, and form an image of the flexible reflector (11) under pressure according to the light intensity of the reflected light.

2. The bionic finger device according to claim 1, characterized in that, The flexible reflector (11) is a semi-transparent elastomer layer.

3. The bionic finger device according to claim 2, characterized in that, The translucent elastomer layer satisfies one or more of the following conditions: The translucent elastomer layer is made of silicone. The Shore hardness of the translucent elastomer layer is 0-45 degrees. The thickness of the translucent elastomer layer is 0.2 mm to 1 mm.

4. The bionic finger device according to claim 1, characterized in that, The bionic finger device also includes a flexible light-shielding member (15) connected to the flexible reflector (11) on the side away from the circuit board (12).

5. The bionic finger device according to claim 4, characterized in that, The flexible light-shielding component (15) is a black silicone layer.

6. The bionic finger device according to claim 4, characterized in that, At least a portion of the flexible reflector (11) and at least a portion of the flexible light shield (15) protrude toward the side away from the circuit board (12).

7. The bionic finger device according to claim 1, characterized in that, The bionic finger device further includes: a transparent base plate (16) and a flexible support member (17); wherein, The transparent base plate (16) is located between the flexible reflector (11) and the circuit board (12) and is connected to the bracket (10). The transparent base plate (16), the bracket (10) and the flexible reflector (11) enclose and form an accommodating space. The flexible support (17) is filled within the accommodating space.

8. The bionic finger device according to claim 7, characterized in that, The inner wall of the bracket (10) is provided with a support part (101) extending toward the center of the through hole, and the transparent base plate (16) overlaps the support part (101).

9. The bionic finger device according to claim 7, characterized in that, The flexible support (17) is a transparent silicone layer.

10. The bionic finger device according to claim 7, characterized in that, The flexible support (17) and the transparent base plate (16) are integrally formed, or the flexible support (17) and the transparent base plate (16) are separate structures.

11. The bionic finger device according to any one of claims 1 to 10, characterized in that, The light source (13) is a ring-shaped light source; Alternatively, there may be multiple light sources (13), which are evenly distributed around the circumference of the through hole.

12. The bionic finger device according to claim 11, characterized in that, The light source (13) is tilted toward the radial edge of the circuit board (12).

13. The bionic finger device according to claim 12, characterized in that, The tilt angle between the light source (13) and the circuit board (12) is 30° to 45°.

14. A smart device, characterized in that, The smart device includes the bionic finger device according to any one of claims 1 to 13.

Images