A license plate recognition control machine

Through the design of folding and buried camera devices, the problem of identification of large-angle inclined license plates is solved by the license plate recognition system, the recognition efficiency is improved and the camera is protected, and it is suitable for parking lots and other scenarios.

CN116524728BActive Publication Date: 2025-08-22RSST (NANJING) LNTELLIGENT TECH CO LTD
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Patent Information

Application Number
CN202310502882.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-05-06
Publication Date
2025-08-22
Estimated Expiration
2043-05-06

AI Technical Summary

Technical Problem

When the vehicle's driving direction is inconsistent, it is difficult to identify license plates with high angle inclines, resulting in inefficient entry and exit.

Method used

The folding camera device and the buried camera device are adopted. The folding camera device realizes the angle adjustment of the camera through the main rod, transmission rod, drive gear and built-in motor. The buried camera device realizes the shooting of a large-angle inclined license plate by rotating the camera and the cover structure.

Benefits of technology

It realizes effective identification of large-angle inclined license plates, without the need for the driver to adjust the front angle, improves the vehicle entry and exit efficiency, and protects the camera from pollution through the cover structure.

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Abstract

The present invention discloses a license plate recognition controller, comprising a controller body electrically connected to an underground camera device. The underground camera device comprises an underground box, a camera mounting rotary plate, a gear, a rotary plate drive motor, an underground camera, a first cover plate, a second cover plate, and a movable drawer plate. The output end of the rotary plate drive motor is connected to a drive gear. The outer ends of the first and second cover plates are both rotatably connected to the upper port of the underground box. One end of the movable drawer plate is movably connected to the interior of the second cover plate, and the other end of the movable drawer plate is rotatably connected to the first cover plate. A window is provided on the movable drawer plate, through which the underground camera can capture images. The license plate recognition controller can capture the license plates of vehicles tilted at large angles using the folding camera device and the underground camera device. Vehicles entering the recognition range of the license plate recognition controller at large angles can also be easily identified without requiring the driver to adjust the angle of the vehicle's front end, thereby improving vehicle entry and exit efficiency.
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Description

Technical Field

[0001] The invention belongs to the technical field of license plate recognition equipment, and in particular relates to a license plate recognition control machine. Background Art

[0002] With the development of society, the number of cars in cities has increased. Centralized vehicle storage and management facilities are facing increasing demands for orderly entry and exit, secure storage, and paid management. Consequently, parking lot management systems have emerged. A parking lot management system is a network-based system that manages vehicle entry and exit, directs traffic flow within the parking lot, and collects parking fees. It is an essential tool for professional parking lot management companies. By collecting and recording vehicle entry and exit records and on-site location, it enables comprehensive management of both dynamic and static vehicle traffic within and outside the parking lot.

[0003] Existing license plate recognition systems are primarily used in locations where the license plate's tilt angle is fixed or small, such as at toll booths or road checkpoints. However, in other specific scenarios, such as parking lot entrances and exits, vehicles traveling in different directions may be tilted at a large angle when capturing license plate information. This can make it difficult for the license plate recognition camera to identify the vehicle, forcing the driver to adjust the vehicle's front angle to ensure the license plate is recognized before exiting, impacting entry and exit efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a license plate recognition control machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a license plate recognition control machine, comprising a control machine body, on which a QR code, an integrated camera, a display screen, and a floodlight are arranged, the control machine body being electrically connected to an underground camera device, the underground camera device comprising an underground box, a camera mounting turn plate, a gear, a turn plate drive motor, an underground camera, a first cover plate, a second cover plate, and a movable drawer plate, the camera mounting turn plate being rotatably arranged inside the underground box, the gear being installed on the side of the rotating shaft position of the camera mounting turn plate, the turn plate drive motor being installed in the underground box, and the drive connection gear at the output end of the turn plate drive motor, the outer ends of the first cover plate and the second cover plate are both rotatably connected to the upper port of the underground box, one end of the movable drawer plate being movably connected to the inside of the second cover plate, and the other end of the movable drawer plate being rotatably connected to the first cover plate, a window being arranged on the movable drawer plate, and the underground camera shoots through the window.

[0006] Preferably, two floodlights are provided at the upper and lower parts, respectively suitable for cars of different heights.

[0007] Preferably, side baffles are provided on the sides of the first cover plate, the second cover plate and the movable drawer plate, so that the space inside the first cover plate, the second cover plate, the movable drawer plate and the side baffles is isolated from the outside to avoid contamination of the lens of the buried camera.

[0008] Preferably, a slot is provided in the second cover plate, and the movable drawer is inserted into the slot.

[0009] Preferably, a slide rail is provided on the lower end surface of the underground camera, and a slider is provided on the upper side of the camera mounting turn plate, and the slider is slidably provided on the slide rail.

[0010] Preferably, a sealing sheet is provided on the upper portion of the connection between the movable drawer and the first cover plate, so as to keep the connection sealed during the relative bending process between the movable drawer and the first cover plate.

[0011] Preferably, it further comprises a foldable camera device, and a receiving groove is provided on the side wall of the control machine body, and the foldable camera device is accommodated in the receiving groove.

[0012] Preferably, the folding camera device includes a main rod, a transmission rod, a driving gear, a connecting ear, a transmission gear, a camera mounting shell, and a built-in motor. The connecting ear is integrally arranged on the camera mounting shell and is rotatably connected to the outer end of the main rod. A transmission gear is arranged on the side of the connecting ear. The transmission rod is connected to the output end of the built-in motor, and the built-in motor and the transmission rod are both arranged inside the main rod. The driving gear is installed at the end of the transmission rod and engages with the transmission gear.

[0013] The technical effects and advantages of the present invention are as follows: the license plate recognition control machine can shoot vehicle license plates tilted at large angles through a folding camera device and an underground camera device, so that vehicles entering the recognition range of the license plate recognition control machine at a large angle can also be easily identified, without the driver having to adjust the angle of the vehicle head, thereby improving the efficiency of vehicle entry and exit; and the underground camera device can play a good protective role by setting a first cover plate and a second cover plate, and the movable drawer in the second cover plate exposes the window when the underground camera is lifted, and the window and the underground camera are not easily contaminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the underground camera device of the present invention;

[0016] Figure 3 It is a schematic structural diagram of the folding camera device of the present invention.

[0017] In the figure: 1. Control unit body; 2. QR code; 3. Integrated camera; 4. Display screen; 5. Floodlight; 6. Receiving slot; 7. Folding camera device; 71. Main rod; 72. Transmission rod; 73. Drive gear; 74. Connecting ear; 75. Transmission gear; 76. Camera mounting shell; 77. Built-in motor; 8. Underground camera device; 81. Underground box; 82. Camera mounting turn plate; 83. Gear; 84. Turn plate drive motor; 85. Underground camera; 86. First cover plate; 87. Second cover plate; 88. Movable drawer plate; 89. Slot; 810. Window; 811. Slide rail. DETAILED DESCRIPTION

[0018] The following is a further description of specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0019] The present invention provides Figure 1 The license plate recognition control machine shown includes a control machine body 1, on which a QR code 2, an integrated camera 3, a display screen 4, and a floodlight 5 are set. Two floodlights 5 are set up, one above the other, which are suitable for cars of different heights. For small cars, the floodlight 5 on the lower side is started for lighting, while taller cars can use the floodlight 5 on the upper side for lighting.

[0020] like Figure 2As shown, the control machine body 1 is electrically connected to the underground camera device 8, which is installed under the ground in the middle of the lane. It has a wider shooting angle and can shoot the license plate of a large-angle vehicle that the integrated camera 3 cannot shoot. The underground camera device 8 includes an underground box 81, a camera installation rotating plate 82, a gear 83, a rotating plate driving motor 84, an underground camera 85, a first cover 86, a second cover 87, and a movable drawer 88. The camera installation rotating plate 82 is rotatably set inside the underground box 81, and the gear 83 is installed on the side of the rotating shaft position of the camera installation rotating plate 82. The rotating plate driving motor 84 is installed in the underground box 81, and the drive connection gear 83 of the output end of the rotating plate driving motor 84 is connected. The rotating plate driving motor 84 drives the gear 83 to rotate, so that the camera The camera mounting plate 82 is rotated in pitch, and shooting can be carried out after the buried camera 85 is exposed. The outer ends of the first cover plate 86 and the second cover plate 87 are rotatably connected to the upper port of the buried box 81. A slot 89 is provided in the second cover plate 87, and a movable drawer plate 88 is movably inserted in the slot 89, and the other end of the movable drawer plate 88 is rotatably connected to the first cover plate 86. A window 810 is provided on the movable drawer plate 88, and the buried camera 85 shoots through the window 810. When the buried camera 85 is retracted, the first cover plate 86 and the second cover plate 87 are in a horizontal state, the movable drawer plate 88 is located in the slot 89, and the window 810 is protected. When the buried camera 85 is lifted, the window 810 is exposed, so that the window and the buried camera 85 are not easily contaminated, thereby avoiding affecting the shooting.

[0021] Side baffles are provided on the sides of the first cover plate 86, the second cover plate 87, and the movable drawer plate 88. The side baffles are made of elastic rubber material, and their edges connect the first cover plate 86, the second cover plate 87, and the movable drawer plate 88. During use, they expand and contract to accommodate rotation and expansion at various positions, maintaining the sealing of the sides. This isolates the space inside the first cover plate 86, the second cover plate 87, the movable drawer plate 88, and the side baffles from the outside, thereby preventing contamination of the lens of the buried camera 85. A sealing sheet is provided at the upper portion of the connection between the movable drawer plate 88 and the first cover plate 86 to maintain the seal at the connection during the relative bending of the movable drawer plate 88 and the first cover plate 86.

[0022] A slide rail 811 is provided on the lower end surface of the underground camera 85 , and a slider is provided on the upper side of the camera mounting rotating plate 82 , and the slider is slidably provided on the slide rail 811 .

[0023] like Figure 3As shown, the present invention also provides another solution to the problem that the integrated camera 3 cannot capture the license plate due to the vehicle angle problem, and also includes a foldable camera device 7. The side wall of the control machine body 1 is provided with a receiving groove 6, and the foldable camera device 7 is stored in the receiving groove 6. The folding camera device 7 includes a main rod 71, a transmission rod 72, a driving gear 73, a connecting ear 74, a transmission gear 75, a camera mounting shell 76, and a built-in motor 77. The main rod 71 is made of deformable rubber and is not easily damaged even if it is hit by a vehicle. The transmission rod 72 is formed by a plurality of rotatably connected rods connected to each other. The rods can rotate horizontally. When hit, they can bend in the horizontal direction without affecting the transmission. The connecting ear 74 is integrally provided on the camera mounting shell 76 and rotatably connected to the outer end of the main rod 71. A transmission gear 75 is provided on the side of the connecting ear 74. The transmission rod 72 is connected to the output end of the built-in motor 77, and the built-in motor 77 and the transmission rod 72 are both provided inside the main rod 71. The driving gear 73 is installed at the end of the transmission rod 72 and meshes with the transmission gear 75. The built-in motor 77 drives the transmission gear 75 to rotate through the transmission rod 72, thereby adjusting the angle of the camera in the camera mounting shell 76 to have a larger shooting angle. It should be noted that Figure 3 for Figure 1 A horizontal cross-sectional view of the folding camera device 7, Figure 1 The middle folding camera device 7 is driven by a motor on the rear side of the control machine body 1 to perform pitch rotation.

[0024] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A license plate recognition control machine, comprising a control machine body (1), wherein the control machine body (1) is provided with a QR code (2), an integrated camera (3), a display screen (4), and a floodlight (5), and is characterized in that: The control machine body (1) is electrically connected to an underground camera device (8), and the underground camera device (8) comprises an underground box (81), a camera mounting rotating plate (82), a gear (83), a rotating plate driving motor (84), an underground camera (85), a first cover plate (86), a second cover plate (87), and a movable draw plate (88). The camera mounting rotating plate (82) is rotatably arranged inside the underground box (81), the gear (83) is mounted on the side of the rotating shaft position of the camera mounting rotating plate (82), and the rotating plate driving motor (84) is installed in the buried box (81), and the driving connecting gear (83) of the output end of the rotating plate driving motor (84) is connected. The outer ends of the first cover plate (86) and the second cover plate (87) are both rotatably connected to the upper end of the buried box (81). One end of the movable draw plate (88) is movably connected to the inside of the second cover plate (87), and the other end of the movable draw plate (88) is rotatably connected to the first cover plate (86). A window (810) is set on the movable draw plate (88), and the buried camera (85) shoots through the window (810).

2. A license plate recognition control machine according to claim 1, characterized in that: The two floodlights (5) are provided at the upper and lower levels, respectively suitable for cars of different heights.

3. A license plate recognition control machine according to claim 1, characterized in that: Side baffles are provided on the sides of the first cover plate (86), the second cover plate (87) and the movable drawer plate (88), so that the space inside the first cover plate (86), the second cover plate (87), the movable drawer plate (88) and the side baffles is isolated from the outside, thereby preventing contamination of the lens of the buried camera (85).

4. A license plate recognition control machine according to claim 1, characterized in that: A slot (89) is provided in the second cover plate (87), and the movable drawer plate (88) is inserted into the slot (89).

5. The license plate recognition control machine according to claim 1, characterized in that: A slide rail (811) is provided on the lower end surface of the underground camera (85), and a slider is provided on the upper side of the camera mounting rotating plate (82), and the slider is slidably provided on the slide rail (811).

6. A license plate recognition control machine according to claim 1, characterized in that: A sealing sheet is provided on the upper portion of the connection between the movable drawer plate (88) and the first cover plate (86), so that the connection is kept sealed during the relative bending process between the movable drawer plate (88) and the first cover plate (86).

7. A license plate recognition control machine according to claim 1, characterized in that: It also includes a foldable camera device (7), and a receiving groove (6) is provided on the side wall of the control machine body (1), and the foldable camera device (7) is accommodated in the receiving groove (6).

8. A license plate recognition control machine according to claim 7, characterized in that: The foldable camera device (7) comprises a main rod (71), a transmission rod (72), a driving gear (73), a connecting ear (74), a driving gear (75), a camera mounting shell (76), and a built-in motor (77). The connecting ear (74) is integrally arranged on the camera mounting shell (76) and is rotatably connected to the outer end of the main rod (71). The transmission gear (75) is arranged on the side of the connecting ear (74). The transmission rod (72) is connected to the output end of the built-in motor (77). The built-in motor (77) and the transmission rod (72) are both arranged inside the main rod (71). The driving gear (73) is installed at the end of the transmission rod (72) and is engaged with the transmission gear (75).

Citation Information

Patent Citations

  • Embedded license plate identification and screening system and control method thereof

    CN111524360A

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