A pure flat ultra-thin vein recognition device and vein recognition method

Abstract

The present invention provides a pure flat ultra-thin vein recognition device and a vein recognition method. The vein recognition device includes: a shell, a light source, a camera device, a detection device and a main control board; a light-transmitting sheet is installed on one side of the shell; the light source and the camera device are installed in the accommodating space formed by the light-transmitting sheet and the shell, and the detection device is installed on the surface of the shell, located below the light-transmitting sheet; the main control board is installed in the shell, and is respectively connected to the light source, the camera device, and the detection device. At the same time, the application also provides a vein recognition method. The light-transmitting sheet covers the surface of the vein recognition device, and the device as a whole has a pure screen structure. The device is small in size and is easier to embed into other smart devices; during recognition, the finger is placed outside the device, and the finger placement position is not limited. The user can adjust the finger placement posture and angle according to habit, which makes the user physical examination more user-friendly.

Description

Technical Field

[0001] The present invention relates to the technical field of human biological feature collection and recognition, and in particular to a flat and ultra-thin vein recognition device and a vein recognition method. Background Art

[0002] Vein recognition is a technology that uses the crisscrossing veins under the skin of the finger to identify the person. Vein recognition technology has the following three main advantages: first, because the veins are hidden in the body, there is almost no risk of forgery or theft, and the surface condition of the finger has little effect on authentication; second, infrared light is used for non-invasive and non-contact imaging, ensuring the convenience of user experience; third, the vein pattern is stable and clearly defined, allowing the use of low-resolution cameras to capture vein images sufficient for algorithm recognition.

[0003] Vein recognition technology obtains vein information based on optical principles. The equipment is large in size and difficult to use in situations where the size of the recognition equipment is required to be high. At the same time, the finger needs to be placed in a fixed position to trigger the detection device, which makes it difficult for users to adjust the usage position, resulting in a poor experience. Summary of the invention

[0004] The invention provides a pure flat ultra-thin vein recognition device to solve the technical problems that the existing vein recognition equipment is large in size and cannot adjust the finger placement position.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0006] The present invention relates to a pure flat ultra-thin vein recognition device, comprising: a shell, a light source, a camera device, a detection device and a main control board; a light-transmitting sheet is installed on one side of the shell, and the light source and the camera device are installed in a containing space formed by the light-transmitting sheet and the shell; the detection device is installed on the surface of the shell and is located below the light-transmitting sheet; the main control board is installed in the shell and is connected to the light source, the camera device and the detection device respectively.

[0007] Preferably, the light-transmitting sheet includes an upper light-transmitting sheet and a lower light-transmitting sheet; the light source is installed in the accommodating space formed by the upper light-transmitting sheet and the shell to form a lighting area; the camera device is installed in the accommodating space formed by the lower light-transmitting sheet and the shell to form a collection area.

[0008] Preferably, first convex ridges are provided around the shell, the first convex ridges protrude from the shell surface, and form an installation space with the shell surface, and the light-transmitting sheet is installed in the installation space.

[0009] Preferably, a second ridge connected to the first ridge is provided in the middle of the shell, and the second ridge protrudes from the shell surface, dividing the installation space into a first installation space and a second installation space, the upper light-transmitting sheet is installed in the first installation space, and the lower light-transmitting sheet is installed in the second installation space.

[0010] Preferably, the shell includes a partition, which separates the shell into an imaging area and an equipment installation area; the light-transmitting sheet is installed on the side of the shell facing the imaging area, the light source, the camera device, and the detection device are installed in the imaging area, and the main control board is installed in the equipment installation area.

[0011] Preferably, the partition includes an upper partition, a middle partition and a lower partition; the upper partition and the lower partition are arranged at an angle, and the middle partition is parallel to the shell surface; the upper light-transmitting sheet is installed above the upper partition and the middle partition, and the lower light-transmitting sheet is installed above the lower partition.

[0012] Preferably, the upper partition is provided with a light source through hole, the middle partition is provided with a detection through hole, and the lower partition is provided with a camera device through hole; the light source passes through the light source through hole, the camera device passes through the camera device through hole, and the detection device is installed above the detection through hole.

[0013] Preferably, an inner groove is provided on the middle partition, and the detection device is located in the inner groove.

[0014] Preferably, the surface of the light source is covered with an infrared filter, and the camera device is an infrared camera device.

[0015] Preferably, the light-transmitting sheet is an infrared filter.

[0016] The present invention provides a vein recognition method with a flat and ultra-thin vein recognition device, comprising the following steps: step A: placing a finger to be identified on a detection device to trigger a main control board; step B: the main control board controls a light source to emit near-infrared light to irradiate the finger; step C: the main control board controls a camera device to capture a vein image irradiated by near-infrared light, and transmits the captured image to an image processing device for identity recognition and comparison.

[0017] In the technical solution provided by the present invention, a light-transmitting sheet covers the surface of the vein recognition device, and the device as a whole has a pure screen structure. The device is small in size and is easier to embed into other smart devices. During recognition, the finger is placed outside the device, and the finger placement position is not limited. The user can adjust the finger placement posture and angle according to habit, making the user physical examination more user-friendly.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0020] Figure 1 is an exploded schematic diagram of a flat ultra-thin vein recognition device in an embodiment;

[0021] Figure 2 is another exploded schematic diagram of the flat ultra-thin vein recognition device in the embodiment;

[0022] Figure 3 is a cross-sectional view of a flat ultra-thin vein recognition device in an embodiment;

[0023] Icons: 1-shell; 11-first convex ridge; 12-second convex ridge; 2-light source; 3-camera device; 4-detection device; 5-main control board; 6-light-transmitting sheet; 61-upper light-transmitting sheet; 62-lower light-transmitting sheet; 7-installation space; 71-first installation space; 72-second installation space; 8-partition; 81-upper partition; 82-middle partition; 83-lower partition; 811-light source through hole; 821-detection through hole; 822-inner groove; 831-camera through hole; 9-imaging area; 10-equipment installation area; 11-base. DETAILED DESCRIPTION

[0024] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with examples. The following examples are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0025] See attached Figure 1-3 As shown, the flat ultra-thin vein recognition device involved in this embodiment includes: a housing 1, a light source 2, a camera device 3, a detection device 4 and a main control board 5; wherein a light-transmitting sheet 6 is installed on one side of the housing 1; the light source 2 and the camera device 3 are installed in the accommodation space formed by the light-transmitting sheet 6 and the housing 1, and the detection device 4 is installed on the surface of the housing 1, located below the light-transmitting sheet 6; the main control board 5 is installed in the housing 1, and is connected to the light source 2, the camera device 3, and the detection device 4 respectively. Among them, the light-transmitting sheet 6 includes an upper light-transmitting sheet 61 and a lower light-transmitting sheet 62; the light source 2 is installed in the accommodation space formed by the upper light-transmitting sheet 61 and the housing 1 to form a lighting area; the camera device 3 is installed in the accommodation space formed by the lower light-transmitting sheet 62 and the housing 1 to form a collection area.

[0026] Among them, the light source 2 is a near-infrared light source, and the light-transmitting sheet 6 is an infrared filter. The light-transmitting sheet 6 covers the surface of the vein recognition device. The device as a whole is a pure screen structure. The device is small in size and is easier to be embedded in other smart devices, increasing the applicable scenarios; the light-transmitting sheet 6 is divided into two pieces: an upper light-transmitting sheet 61 and a lower light-transmitting sheet 62. The upper light-transmitting sheet 61 and the housing 1 form a lighting area. The near-infrared light emitted by the near-infrared light source is distributed in the lighting area. When the finger is placed in the lighting area, a hand vein image can be formed by irradiation with near-infrared light; the lower light-transmitting sheet 62 and the housing 1 form an imaging area. The camera device captures the vein image formed by irradiation with near-infrared light for identity recognition; and the use of two infrared filters can avoid the refraction of light in the infrared filter when one infrared filter is used, which affects the imaging quality of the camera device.

[0027] The working mode of this device is as follows: the finger is placed on the detection device 4 at an angle, the induction circuit is triggered, the main control board 4 controls the light source 2 to emit near-infrared light, the near-infrared light is irradiated to the finger through the upper light-transmitting sheet 61, the veins in the finger absorb the near-infrared light to form a hand vein image, the vein image is transmitted to the camera device 3 through the lower light-transmitting sheet 62, and the camera device 3 transmits the collected vein image to the main control board for identity recognition and comparison. The finger is placed outside the device, and the finger placement position is not limited. The finger can be placed at various angles. The user can adjust the finger placement posture and angle according to habit, which makes the user physical examination more user-friendly.

[0028] In another embodiment, the light source 2 is a near-infrared light source, the surface of the light source 2 is covered with an infrared filter, and the camera device 3 is an infrared camera device; the near-infrared light source emits near-infrared light, which is irradiated onto the finger to form a vein image, and the infrared camera device collects the above vein image for identity recognition.

[0029] It should be noted that this solution only needs to ensure that the near-infrared light emitted by the near-infrared light source illuminates the finger, while filtering out other stray light that illuminates the finger and affects the imaging quality; at the same time, it is ensured that the camera device can only capture the vein image formed by the finger absorbing the near-infrared light, and cannot capture the image formed by other stray light absorbed by the finger.

[0030] The shell 1 is provided with a first ridge 11 protruding from the surface of the shell 1 around the periphery, and the first ridge 11 and the surface of the shell 1 form an installation space 7, and the light-transmitting sheet 6 is installed in the installation space 7; the shell 1 is provided with a second ridge 12 connected to the first ridge 11 in the middle position, and the second ridge 12 protrudes from the surface of the shell 1, and the installation space 7 is divided into a first installation space 71 and a second installation space 72, and the upper light-transmitting sheet 61 is installed in the first installation space 71, and the lower light-transmitting sheet 62 is installed in the second installation space 72. The first installation space 71 and the second installation space 72 are formed by the first ridge 11 and the second ridge 12, and the upper light-transmitting sheet 61 and the lower light-transmitting sheet 62 are installed in the first installation space 71 and the second installation space 72 respectively, and the upper light-transmitting sheet 61 and the lower light-transmitting sheet 62 are limited, so that the connection between the various components of the device is more stable, more compact, and smaller in size.

[0031] The shell 1 includes a partition 8, which divides the shell 1 into an imaging area 9 and an equipment installation area 10; the light-transmitting sheet 6 is installed on the side of the shell 1 facing the imaging area 9, the light source 2, the camera device 3, and the detection device 4 are installed in the imaging area 9, and the main control board 5 is installed in the equipment installation area 10; the partition 8 includes an upper partition 81, a middle partition 82, and a lower partition 83; the upper partition 81 and the lower partition 83 are arranged at an angle, and the middle partition 82 is parallel to the surface of the shell 1; the upper light-transmitting sheet 61 is installed above the upper partition 81 and the middle partition 82, and the lower light-transmitting sheet 62 is installed above the lower partition 83. The above-mentioned layout method is more effective, the various components of the equipment are more compact, and the partition is arranged at an angle, which can provide more sufficient space for the equipment installation area 10, making the overall volume smaller. At the same time, by dividing the imaging area 9 and the equipment installation area 10, it can prevent the main control board 5 and connecting wires and other equipment from entering the imaging area, blocking light and affecting the imaging quality.

[0032] The upper partition 81 is provided with a light source through hole 811, the middle partition 82 is provided with a detection through hole 821, and the lower partition 83 is provided with a camera through hole 831; the light source 2 passes through the light source through hole 811, the camera 3 passes through the camera through hole 831, and the detection device 4 is installed above the detection through hole 821. The middle partition 82 is also provided with an inner groove 822, and the detection device 4 is in the inner groove 822. By setting a light source through hole 811 and a camera device through hole 831, and passing the light source 2 and the camera device 3 therethrough, and connecting the main control board in the device installation area through connecting lines, the devices in the imaging area 9 can be reduced to avoid displacement of the devices affecting the imaging quality; placing the detection device 4 above the detection through hole 821 and below the light-transmitting sheet 6, rather than directly in the device installation area 10, can increase the sensitivity of the detection device 4 and enhance the user experience; setting an inner groove 822 and placing the detection device 4 therein can avoid displacement of the detection device, which affects the finger placement position when the user uses it and ultimately affects the recognition effect.

[0033] The housing 1 further includes a base 11, which is installed on a side of the housing 1 facing the equipment installation area 10. The equipment installation area 10 is formed by the housing 1, the partition 8 and the base 11 to prevent displacement of the equipment and delay the service life of the equipment.

[0034] This embodiment also provides a vein recognition method, and the specific steps are as follows: Step A: Place the finger to be identified on the detection device to trigger the main control board; Step B: The main control board controls the light source to emit near-infrared light to irradiate the finger; Step C: The main control board controls the camera device to capture the vein image irradiated by the near-infrared light, and transmits the collected image to the image processing device for identity recognition and comparison.

[0035] The present invention is described in detail above in conjunction with the embodiments, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A flat and ultra-thin vein recognition device, characterized in that: include: Housing, light source, camera device, detection device and main control board; A light-transmitting sheet is installed on one side of the housing, and the light-transmitting sheet includes an upper light-transmitting sheet and a lower light-transmitting sheet; The shell is provided with first ridges around its periphery, the first ridges protrude from the shell surface, and form an installation space with the shell surface, and the light-transmitting sheet is installed in the installation space; The light source is installed in the accommodation space formed by the upper light-transmitting sheet and the housing to form a lighting area; The camera device is installed in the accommodation space formed by the lower light-transmitting sheet and the housing to form a collection area; The detection device is mounted on the surface of the housing and is located below the light-transmitting sheet; The main control board is installed in the housing and is connected to the light source, the camera device, and the detection device respectively; The housing further comprises a partition plate, which divides the housing into an imaging area and a device installation area, the light-transmitting sheet is installed on the side of the housing facing the imaging area, the light source, the camera device, and the detection device are installed in the imaging area, and the main control board is installed in the device installation area; The partition includes an upper partition, a middle partition and a lower partition. The upper partition and the lower partition are arranged obliquely, the middle partition is parallel to the shell surface, the upper light-transmitting sheet is installed above the upper partition and the middle partition, and the lower light-transmitting sheet is installed above the lower partition.

2. The flat ultra-thin vein recognition device according to claim 1, characterized in that: A second ridge connected to the first ridge is provided in the middle of the shell, and the second ridge protrudes from the shell surface to divide the installation space into a first installation space and a second installation space. The upper light-transmitting sheet is installed in the first installation space, and the lower light-transmitting sheet is installed in the second installation space.

3. The flat and ultra-thin vein recognition device according to claim 1, characterized in that: The upper partition is provided with a light source through hole, the middle partition is provided with a detection through hole, and the lower partition is provided with a camera device through hole; the light source passes through the light source through hole, the camera device passes through the camera device through hole, and the detection device is installed above the detection through hole.

4. The flat and ultra-thin vein recognition device according to claim 3, characterized in that: The middle partition is provided with an inner groove, and the detection device is located in the inner groove.

5. The flat ultra-thin vein recognition device according to any one of claim 1, characterized in that: The light-transmitting sheet is an infrared filter; or the surface of the light source is covered with an infrared filter, and the camera device is an infrared camera device.

6. A vein recognition method with a flat and ultra-thin vein recognition device as claimed in any one of claims 1 to 5, characterized in that: The following steps are included: Step A: Place the finger to be identified on the detection device to trigger the main control board; Step B: The main control board controls the light source to emit near-infrared light to illuminate the finger; Step C: The main control board controls the camera device to capture the vein image illuminated by the near-infrared light, and transmits the collected image to the image processing device for identity recognition and comparison.

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