Palm vein access control machine

Abstract

This utility model relates to the field of access control technology and discloses a palm vein access control machine, including a back plate. A shell is installed on the front side of the outer wall of the back plate. Fixing blocks are fixedly connected to the upper and lower ends of the rear side of the outer wall of the back plate. A fixing mechanism is installed on the rear side of the outer wall of each fixing block to fix the structure and prevent loosening. Installation mechanisms are installed on the left and right sides of the outer walls of the back plate and the shell to facilitate the installation and disassembly of components. The fixing mechanism includes a turntable. In this utility model, the fixing plate is installed on a wall or other equipment. The turntable on the rear side of the access control machine is aligned with the sliding column. Then, the position of the slider is adjusted so that the slider is locked onto the outer wall of the slide rail. Finally, the turntable is rotated, and the turntable drives the sliding rod, causing the sliding rod to slide in the slide groove and drive the slider to move towards the sliding column on the slide rail, so that the slider is locked onto the outer wall of the slide rail, forming a stable connection and preventing tilting that could affect the acquisition angle.

Description

Technical Field

[0001] This utility model relates to the field of access control technology, and in particular to a palm vein access control machine. Background Technology

[0002] The palm vein access control machine is an intelligent security device based on biometric technology. It identifies the user by scanning the distribution characteristics of subcutaneous veins in the palm with near-infrared light, and has significant advantages such as high security, non-contact operation, and strong anti-interference capabilities.

[0003] In existing technology, this device uses near-infrared light to penetrate the palm, where hemoglobin in the blood absorbs the light to form a vein image. A third-generation algorithm then extracts feature values ​​(such as vein direction and branch angles) and compares them with a pre-stored template to complete identity verification. The entire process is contactless. Without a network connection, the access control device can locally store user information (such as card number, password, and palm vein features) and directly perform local recognition to open the door, ensuring the normal operation of the access control system. However, in outdoor scenarios, the near-infrared component in sunlight (especially at noon) can interfere with the device's light source, causing the vein image to be overexposed. The current sensor is equipped with a narrowband filter to filter out ambient light, improving outdoor recognition stability. However, the design of the mounting holes on the back is unreasonable, such as the spacing being too small and the lack of a horizontal calibration line. The connection method is also complex, with multiple hidden screws, making it difficult to fix precisely during installation and prone to tilting, affecting the acquisition angle. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a palm vein access control machine, which aims to improve the problems of difficulty in accurately fixing during installation, easy tilting, and affecting the collection angle in the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a palm vein access control machine, comprising a back plate, an outer shell mounted on the front side of the outer wall of the back plate, and fixing blocks fixedly connected to the upper and lower ends of the rear side of the outer wall of the back plate. A fixing mechanism is mounted on the rear side of the outer wall of the fixing blocks, the fixing mechanism being used to fix the structure and prevent loosening. Installation mechanisms are mounted on the left and right sides of the outer walls of the back plate and the outer shell, the installation mechanisms being used to facilitate the installation and disassembly of components. The fixing mechanism includes a turntable, the turntable being rotatably connected to the rear side of the outer wall of the fixing blocks, a handle being fixedly connected to the outer wall of the turntable, and multiple sliding grooves being equidistantly opened at the front end of the turntable, with limit components installed inside the sliding grooves.

[0006] As a further description of the above technical solution:

[0007] The limiting component includes a slide rod that is slidably connected to the inner wall of the slide groove, and a slider is installed on the rear side of the outer wall of the slide groove.

[0008] As a further description of the above technical solution:

[0009] A fixed plate is provided on the rear side of the turntable. A sliding column is fixedly connected to the middle of the front end of the fixed plate. The sliding column is slidably connected to the inner wall of the turntable. Slide rails are fixedly connected to the left and right sides of the front end of the fixed plate. The slide rails are slidably connected to the inner wall of the slider.

[0010] As a further description of the above technical solution:

[0011] The mounting mechanism includes a fixed base, which is equidistantly fixed to the left and right sides of the outer wall of the back plate. Mounting blocks are equidistantly fixed to the left and right sides of the outer wall of the outer shell. A connecting rod is slidably connected to the inner wall of the fixed base.

[0012] As a further description of the above technical solution:

[0013] The end of the connecting rod is fixedly connected to a protrusion, which is slidably connected to the inner wall of the mounting block. A locking assembly is installed inside the mounting block.

[0014] As a further description of the above technical solution:

[0015] The engaging assembly includes a fixing plate, which is fixedly connected to the top of the mounting block. A bolt is rotatably connected to the inner wall of the fixing plate, and a locking block is threadedly connected to the outer wall of the bolt. The locking block is slidably connected to the inner wall of the mounting block and to the outer wall of the protrusion.

[0016] As a further description of the above technical solution:

[0017] Multiple wires are equidistantly installed on the rear side of the outer wall of the back panel, and multiple cameras are equidistantly installed on the upper front side of the outer wall of the outer shell.

[0018] As a further description of the above technical solution:

[0019] A signal light is installed on the middle of the front side of the outer wall of the housing, and a keypad is installed on the lower middle of the front side of the outer wall of the housing.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the fixing plate is installed on the wall and other equipment, the turntable on the back of the access control machine is aligned with the sliding column, and then the position of the slider is adjusted so that the slider is stuck on the outer wall of the slide rail. Finally, the turntable is rotated, and the turntable drives the sliding rod to slide in the slide groove and drive the slider to move towards the sliding column on the slide rail, so that the slider is stuck on the outer wall of the slide rail, forming a stable connection, preventing tilting and affecting the collection angle.

[0022] 2. In this utility model, when installing the outer shell and the back plate, first rotate the connecting rod, which drives the protrusion to rotate. Then, align the outer shell and the back plate so that the mounting block slides along the protrusion. Then, rotate the bolt, which rotates in the fixing plate and drives the locking block. The locking block slides downward in the mounting block and locks both sides of the protrusion to prevent loosening. The operation is convenient, and it is easy to install and disassemble the outer shell, thus improving maintenance efficiency. Attached Figure Description

[0023] Figure 1 This is a perspective view of a palm vein access control machine proposed in this utility model;

[0024] Figure 2 This is a front view of a palm vein access control machine proposed in this utility model;

[0025] Figure 3 This is a side view of a palm vein access control machine proposed in this utility model;

[0026] Figure 4 This is a partial structural diagram of a palm vein access control machine proposed in this utility model;

[0027] Figure 5 This is a partial structural exploded view of a palm vein access control machine proposed in this utility model.

[0028] Legend:

[0029] 1. Backplate; 2. Fixing block; 3. Fixing mechanism; 301. Fixing plate; 302. Sliding column; 303. Handle; 304. Turntable; 305. Slide groove; 306. Limiting component; 3061. Sliding rod; 3062. Sliding block; 307. Slide rail; 4. Mounting mechanism; 401. Fixing base; 402. Engaging component; 4021. Bolt; 4022. Fixing piece; 4023. Locking block; 403. Mounting block; 404. Protrusion; 405. Connecting rod; 5. Housing; 6. Camera; 7. Signal light; 8. Keypad; 9. Wire. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a palm vein access control machine. This access control machine includes fingerprint, face, palm vein, password, card swipe, and QR code verification. It uses a Rockchip AI chip and a Linux system, supporting combined verification (such as palm vein + password). Suitable for high-end communities and office buildings, it covers all user habits. It includes a back panel 1 made of ABS engineering plastic, aluminum alloy, etc., to protect internal components while maintaining aesthetics and durability. A shell 5 is installed on the front of the outer wall of the back panel 1, protecting the internal components and adapting to various installation scenarios. The shell 5 is primarily made of metal (such as aluminum alloy) and high-strength plastic. Fixing blocks 2 are fixedly connected to the upper and lower ends of the rear side of the outer wall of the back panel 1. Fixing mechanisms 3 are installed on the rear side of the outer wall of the fixing blocks 2 to fix the structure and prevent loosening. Security features are also installed on the left and right sides of the outer walls of the back panel 1 and the shell 5. The mounting mechanism 4 is used to facilitate the installation and disassembly of components; the fixing mechanism 3 includes a turntable 304, which is rotatably connected to the rear side of the outer wall of the fixing block 2. A handle 303 is fixedly connected to the outer wall of the turntable 304. Multiple sliding grooves 305 are equidistantly opened at the front end of the turntable 304. A limiting component 306 is installed inside the sliding groove 305. The limiting component 306 includes a sliding rod 3061, which is slidably connected to the inner wall of the sliding groove 305. A slider 3062 is installed on the rear side of the outer wall of the sliding groove 305; a fixing plate 301 is provided on the rear side of the turntable 304. A sliding column 302 is fixedly connected to the middle of the front end of the fixing plate 301. The sliding column 302 is slidably connected to the inner wall of the turntable 304. Sliding rails 307 are fixedly connected to the left and right sides of the front end of the fixing plate 301. The sliding rails 307 are slidably connected to the inner wall of the slider 3062.

[0032] Specifically, first, the fixing plate 301 is installed on the wall or other related equipment to ensure it is firm and reliable. Next, the turntable 304 on the back of the access control machine is precisely aligned with the sliding column 302 to ensure the accuracy of subsequent installation. After alignment, the position of the slider 3062 is adjusted so that it can smoothly fit into the outer wall of the slide rail 307. Then, the turntable 304 is rotated. The rotation of the turntable 304 will drive the sliding rod 3061 through the transmission mechanism, allowing it to slide smoothly in the slide groove 305. As the sliding rod 3061 moves in the slide groove 305, the slider 3062 will also move towards the sliding column 302 on the slide rail 307 accordingly, ensuring that the slider 3062 can be accurately locked on the outer wall of the slide rail 307, thus forming a stable connection. This stable connection can effectively prevent the equipment from tilting during use, thereby ensuring the accuracy of the acquisition angle and avoiding the impact of equipment instability on the acquisition effect.

[0033] Reference Figure 1 , Figure 2 and Figure 5The mounting mechanism 4 includes a fixed base 401, which is equidistantly fixed to the left and right sides of the outer wall of the back plate 1. Mounting blocks 403 are equidistantly fixed to the left and right sides of the outer wall of the outer shell 5. A connecting rod 405 is slidably connected to the inner wall of the fixed base 401. A protrusion 404 is fixedly connected to the end of the connecting rod 405. The protrusion 404 is slidably connected to the inner wall of the mounting block 403. A locking assembly 402 is installed inside the mounting block 403. The locking assembly 402 includes a fixing piece 4022, which is fixedly connected to the top of the mounting block 403. A bolt 4021 is rotatably connected to the inner wall of the fixing piece 4022. A locking block 4023 is threadedly connected to the outer wall of the bolt 4021. The locking block 4023 is slidably connected to the inner wall of the mounting block 403 and to the outer wall of the protrusion 404.

[0034] Specifically, when installing the outer shell 5 and the back plate 1, the connecting rod 405 needs to be rotated first. By rotating the connecting rod 405, the protrusion 404 can be rotated. Then, the outer shell 5 and the back plate 1 are aligned to ensure that their positions are correct. At this time, the mounting block 403 is slid along the protrusion 404. Next, the bolt 4021 needs to be rotated. The bolt 4021 rotates within the fixing plate 4022 and drives the locking block 4023 through the transmission mechanism. The locking block 4023 slides downward within the mounting block 403 and finally locks the two sides of the protrusion 404, thereby preventing the entire structure from loosening. This design makes the operation process very convenient and facilitates the installation and disassembly of the outer shell 5. In this way, the efficiency of maintenance work can be significantly improved, making the entire maintenance process more efficient and smooth.

[0035] Reference Figure 1 , Figure 2 and Figure 3 Multiple wires 9 are equidistantly installed on the rear side of the outer wall of the back panel 1. Multiple cameras 6 are equidistantly installed on the upper front side of the outer wall of the outer shell 5. The cameras 6 include one IR infrared camera 6 and one RGB color camera 6, which are suitable for close-range palm print and palm vein recognition. They can effectively identify the palm print and palm vein features of the user and provide high-quality palm print and palm vein images to the built-in upper-layer algorithm. A signal light 7 is installed on the middle front side of the outer wall of the outer shell 5. A keypad 8 is installed on the lower front side of the outer wall of the outer shell 5. The keypad 8 is a touch-sensitive key with no physical buttons. It recognizes touch operations through capacitive sensing. The surface is mostly made of glass and acrylic materials, which are beautiful and easy to clean (suitable for high-end scenarios).

[0036] Specifically, wire 9 can conduct electrical signals to achieve information transmission; camera 6 is suitable for close-range palmprint and palm vein recognition, effectively identifying the user's palmprint and palm vein features and providing high-quality palmprint and palm vein images to the built-in upper-layer algorithm; signal light 7 indicates the status through different colors and flashing modes, with green for unlocking and red for illegal operation and error messages. In special circumstances, such as when the user's palm is injured, contaminated with oil or water, or when camera 6 temporarily malfunctions, biometric recognition may fail. In this case, keypad 8 serves as a backup solution, allowing the user to complete identity verification by entering a preset password, avoiding the problem of being unable to open the door due to biometric recognition failure and ensuring the basic access control function of the access control system.

[0037] Working principle: Install the fixing plate 301 on the wall and other equipment, align the turntable 304 on the back of the access control machine with the sliding column 302, then adjust the position of the slider 3062 so that the slider 3062 is locked on the outer wall of the slide rail 307. Finally, rotate the turntable 304, which drives the sliding rod 3061 to slide in the slide groove 305 and drive the slider 3062 to move towards the sliding column 302 on the slide rail 307, so that the slider 3062 is locked on the outer wall of the slide rail 307, forming a stable connection and preventing tilting that would affect the acquisition angle.

[0038] When installing the outer casing 5 and the back plate 1, first rotate the connecting rod 405. The connecting rod 405 drives the protrusion 404 to rotate. Then align the outer casing 5 and the back plate 1 so that the mounting block 403 slides along the protrusion 404. Then rotate the bolt 4021. The bolt 4021 rotates in the fixing plate 4022 and drives the locking block 4023. The locking block 4023 slides downward in the mounting block 403 and locks the two sides of the protrusion 404 to prevent loosening. The operation is convenient, and it is easy to install and remove the outer casing 5, which improves maintenance efficiency.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A palm vein access control machine comprising a back plate (1), characterized in that: The back plate (1) is equipped with a shell (5) on the front side of its outer wall. The upper and lower ends of the back wall of the back plate (1) are fixedly connected to a fixing block (2). The fixing block (2) is equipped with a fixing mechanism (3) on the rear side of its outer wall. The fixing mechanism (3) is used to fix the structure to prevent loosening. The back plate (1) and the shell (5) are equipped with an installation mechanism (4) on the left and right sides of their outer walls. The installation mechanism (4) is used to facilitate the installation and disassembly of components. The fixing mechanism (3) includes a turntable (304), which is rotatably connected to the rear side of the outer wall of the fixing block (2). A handle (303) is fixedly connected to the outer wall of the turntable (304). Multiple sliding grooves (305) are equidistantly opened at the front end of the turntable (304). Limiting components (306) are installed inside the sliding grooves (305). The limiting component (306) includes a slide rod (3061), which is slidably connected to the inner wall of the slide groove (305), and a slider (3062) is installed on the rear side of the outer wall of the slide groove (305). A fixing plate (301) is provided on the rear side of the turntable (304). A sliding column (302) is fixedly connected to the middle of the front end of the fixing plate (301). The sliding column (302) is slidably connected to the inner wall of the turntable (304). Slide rails (307) are fixedly connected to the left and right sides of the front end of the fixing plate (301). The slide rails (307) are slidably connected to the inner wall of the slider (3062).

2. The palm vein access control machine according to claim 1, characterized by: The installation mechanism (4) includes a fixed seat (401), which is fixedly connected at equal intervals to the left and right sides of the outer wall of the back plate (1). Mounting blocks (403) are fixedly connected at equal intervals to the left and right sides of the outer wall of the outer shell (5). A connecting rod (405) is slidably connected to the inner wall of the fixed seat (401).

3. The palm vein access control machine according to claim 2, characterized by: The end of the connecting rod (405) is fixedly connected to a protrusion (404), the protrusion (404) is slidably connected to the inner wall of the mounting block (403), and the mounting block (403) is equipped with a locking assembly (402).

4. The palm vein access control machine according to claim 3, characterized by: The engaging assembly (402) includes a fixing piece (4022) which is fixedly connected to the top of the mounting block (403). A bolt (4021) is rotatably connected to the inner wall of the fixing piece (4022). A locking block (4023) is threadedly connected to the outer wall of the bolt (4021). The locking block (4023) is slidably connected to the inner wall of the mounting block (403) and to the outer wall of the protrusion (404).

5. The palm vein access control machine according to claim 1, characterized by: Multiple wires (9) are equidistantly installed on the rear side of the outer wall of the back plate (1), and multiple cameras (6) are equidistantly installed on the upper middle part of the front side of the outer wall of the outer shell (5).

6. A palm vein access control machine according to claim 1, characterized in that: A signal light (7) is installed on the middle of the front side of the outer wall of the outer casing (5), and a password disk (8) is installed on the lower middle of the front side of the outer wall of the outer casing (5).

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