Parking lot code scanning charging device based on license plate recognition

Abstract

The utility model relates to a parking lot code scanning charging device based on license plate recognition, and belongs to the technical field of parking lot code scanning equipment, and the parking lot code scanning charging device comprises a license plate recognition camera, a two-dimensional code display screen fixedly installed on the license plate recognition camera, and a distance adjusting device supporting the license plate recognition camera. The distance adjusting device comprises a base, a horizontal base fixedly installed on the base and an adjusting frame rotationally installed on the horizontal base. According to the parking lot code scanning charging device based on license plate recognition, the license plate recognition camera is installed on the base in a swinging mode through the installation base and the adjusting frame, the front-back distance of the installation base can be adjusted through swinging of the adjusting frame, and distance adjusting focusing of the license plate recognition camera is assisted; the license plate recognition camera can maintain the horizontal orientation conveniently, so that the license plate recognition camera is prevented from being separated from the focusing position after the distance is changed front and back, and the recognition accuracy of the device is improved.

Description

Technical Field

[0001] This application relates to the technical field of parking lot code scanning devices, and specifically to a parking lot code scanning and charging device based on license plate recognition. Background Art

[0002] Parking lot code scanning and charging is a modern parking management method that uses mobile phone code scanning technology to automatically calculate and pay parking fees. This method not only improves the management efficiency of the parking lot but also provides a more convenient payment experience for car owners.

[0003] Parking lot code scanning and charging includes a parking management system responsible for identifying vehicle license plates, recording the entry and exit times of vehicles, and calculating parking fees; code scanning devices installed at the entrance and exit of the parking lot for scanning the two-dimensional codes of car owners; and display screens that display parking fees and relevant information at the entrance and exit of the parking lot.

[0004] Upon retrieval, the utility model with the publication number CN220817049U, a parking lot code scanning and charging device based on license plate recognition, includes a base. A column is fixedly arranged above the base. A cross bar is rotatably connected above the column. A camera screen is slidably connected to the cross bar. A rotating sleeve is fixedly arranged at the top of the column. A connecting rod is fixedly arranged at the bottom of the cross bar. The number of the connecting rods is two. The rotating sleeve is located between the two connecting rods. A first motor is arranged on one side of the connecting rod. The output shaft of the first motor penetrates through the connecting rod and the rotating sleeve to form a rotating connection structure. In this utility model, the camera screen can change its orientation and adjust the shooting distance between the camera screen and the vehicle, enabling the camera to refocus and better shoot the license plate, avoiding problems such as congestion caused by the vehicle being too close to the camera and unable to recognize the license plate, and being convenient and practical.

[0005] In the above patent application, by setting the cross bar to adjust the distance between the camera screen and the gate spacing member of the parking lot, the recognition difficulty caused by inaccurate focusing of the camera screen on the vehicle license plate is reduced. However, when put into actual use, due to the influence of the connection of the device's lead screw, the camera screen adopts a linear retraction method, and the orientation angle of the camera screen is prone to deviate from the position in front of the gate, thus easily causing the camera screen to lose the license plate recognition area. For this, a parking lot code scanning and charging device based on license plate recognition is proposed to solve the above-mentioned problems. Utility Model Content

[0006] Aiming at the deficiencies of the prior art, this application provides a parking lot code scanning and charging device based on license plate recognition, which has advantages such as being able to maintain the orientation of the camera constant after adjusting the distance.

[0007] To achieve the above object, the present application provides the following technical solutions: A parking lot code-scanning charging device based on license plate recognition, including a license plate recognition camera, a two-dimensional code display screen fixedly installed on the license plate recognition camera, and a distance adjustment device supporting the license plate recognition camera. The distance adjustment device includes a base, a horizontal seat fixedly installed on the base, and an adjustment frame rotatably installed on the horizontal seat;

[0008] A driving seat is also fixedly installed on the top of the base. A traction rod extending to the outside of the adjustment frame is rotatably installed on the driving seat. A tension spring is connected between the end of the traction rod and the adjustment frame. A driving motor is fixedly installed on the top of the base, and the driving motor is fixedly connected to one end of the traction rod;

[0009] An installation seat is arranged on the adjustment frame. An installation shaft is fixedly installed between the bottom of the installation seat and the two horizontal seats. A sprocket is arranged outside the installation shaft, and a chain is engaged between the two sprockets.

[0010] Further, the adjustment frame is L-shaped, and the installation seat is rotatably installed at the right angle of the adjustment frame.

[0011] Further, the number of the horizontal seats and the adjustment frames is two each. The adjustment frames are rotatably installed on the front and rear sides of the two horizontal seats. An installation seat is rotatably installed between the two adjustment frames, and the license plate recognition camera is fixedly installed on the installation seat.

[0012] Further, the installation seat consists of a flat plate connected to the license plate recognition camera and a support leg extending downward. The support leg part of the installation seat rotates between the two adjustment frames.

[0013] Further, a connecting nail is fixedly installed on the side of the adjustment frame. A collar is sleeved outside the connecting nail. One end of the tension spring is fixed to the end of the traction rod, and the other end is fixed to the collar.

[0014] Further, the sprocket located between the horizontal seats is fixedly connected to the installation shaft, and the sprocket located below the installation seat is rotatably connected to the installation shaft.

[0015] Further, a limiting ring is also fixedly installed outside the installation shaft, and the limiting ring is located at both ends of the sprocket.

[0016] Compared with the prior art, the technical solutions of the present application have the following beneficial effects:

[0017] The parking lot code-scanning toll collection device based on license plate recognition is provided with a license plate recognition camera which can be swingably mounted on a base through a mounting seat and an adjusting frame. The front-back distance of the mounting seat can be adjusted by the swing of the adjusting frame, so as to assist the license plate recognition camera in adjusting the distance and focusing. At the same time, since a sprocket and a chain are meshed with each other, the license plate recognition camera can be conveniently maintained in a horizontal orientation, thereby avoiding the shooting of the license plate recognition camera getting out of the focused position after the distance is changed back and forth, and improving the recognition accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present application;

[0019] Figure 2 is a three-dimensional structure diagram of the mounting seat of the present application;

[0020] Figure 3 is a top view of the structure in which the mounting shaft of the present application is rotatably connected between the horizontal seats;

[0021] Figure 4 is a schematic diagram of the connection structure of the sprocket and the chain of the present application.

[0022] In the figure: 1. License plate recognition camera; 2. Two-dimensional code display screen; 3. Base; 4. Horizontal seat; 5. Adjusting frame; 6. Mounting seat; 7. Driving seat; 8. Driving motor; 9. Traction rod; 10. Connecting nail; 11. Collar; 12. Tension spring; 13. Mounting shaft; 14. Sprocket; 15. Chain; 16. Limit ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0024] Please refer to Figures 1 to 4 , a parking lot code-scanning toll collection device based on license plate recognition in this embodiment includes a license plate recognition camera 1, a two-dimensional code display screen 2 fixedly mounted on the license plate recognition camera 1, and a distance-adjusting device for supporting the license plate recognition camera 1.

[0025] The license plate recognition camera 1 and the QR code display screen 2 are combined with the parking lot scanning and charging system to achieve more convenient and efficient parking management. The working process is as follows: entry recognition, when a vehicle enters the parking lot, the license plate recognition camera will automatically take a picture of the vehicle's license plate and extract the license plate number through image recognition technology. The system will record the license plate number and entry time in the database; parking, when the vehicle is parked in the parking lot, the system will manage it according to the license plate number and record the parking time; exit scanning, when the owner is ready to leave the parking lot, he can scan the QR code at the exit of the parking lot with a mobile phone, or enter the license plate number on the self-service terminal of the parking lot. The system will query the database according to the license plate number and calculate the parking fee.

[0026] In the present application, a distance adjustment device is provided to pull the license plate recognition camera 1 to move, so that the license plate recognition camera 1 can maintain its original direction and avoid loss of license plate recognition.

[0027] In this embodiment, the distance adjustment device includes a base 3 , a horizontal base 4 fixedly mounted on the base 3 , and an adjustment frame 5 rotatably mounted on the horizontal base 4 .

[0028] The adjustment frame 5 is L-shaped, and the number of the horizontal seat 4 and the adjustment frame 5 are both two. The adjustment frame 5 is rotatably mounted on the front and rear sides of the two horizontal seats 4. A mounting seat 6 is rotatably mounted between the two adjustment frames 5, and the license plate recognition camera 1 is fixedly mounted on the mounting seat 6.

[0029] Specifically, the mounting base 6 consists of a flat plate connected to the license plate recognition camera 1 and a support leg extending downward. The support leg portion of the mounting base 6 rotates between the two adjustment frames 5. The mounting base 6 and the adjustment frame 5 are connected so that when the adjustment frame 5 swings relative to the horizontal base 4, it can drive the mounting base 6 to change position and achieve distance adjustment.

[0030] It should be noted that the mounting seat 6 is rotatably installed at a right angle to the adjusting frame 5, and a driving seat 7 is also fixedly installed on the top of the base 3. A traction rod 9 extending to the outside of the adjusting frame 5 is rotatably installed on the driving seat 7, and a tension spring 12 is connected between the end of the traction rod 9 and the adjusting frame 5. Through the elastic force of the tension spring 12, the adjusting frame 5 can stretch the tension spring 12 after swinging, and the reaction force of the tension spring 12 can make the adjusting frame 5 rotate and reset.

[0031] It is understandable that a driving motor 8 is fixedly mounted on the top of the base 3 , and the driving motor 8 is fixedly connected to one end of the traction rod 9 , so that the traction rod 9 can be driven to rotate around the driving seat 7 by the driving motor 8 .

[0032] In this embodiment, a connecting pin 10 is fixedly installed on the side surface of the adjusting frame 5. A collar 11 is sleeved outside the connecting pin 10. One end of the tension spring 12 is fixed to the end of the traction rod 9, and the other end is fixed to the collar 11, which enables the tension spring 12 to be conveniently connected through the collar 11.

[0033] To maintain the orientation of the mounting base 6 unchanged, a mounting shaft 13 is fixedly installed between the bottom of the mounting base 6 and the two horizontal seats 4. A sprocket 14 is arranged outside the mounting shaft 13, and a chain 15 is engaged between the two sprockets 14.

[0034] It should be noted that the sprocket 14 between the horizontal seats 4 is fixedly connected to the mounting shaft 13, and the sprocket 14 below the mounting base 6 is rotatably connected to the mounting shaft 13.

[0035] It should be noted that a limit ring 16 is also fixedly installed outside the mounting shaft 13. The limit ring 16 is located at both ends of the sprocket 14 and is used to accurately limit the position of the sprocket 14.

[0036] The working principle of the above embodiment is as follows:

[0037] By controlling the driving motor 8, the driving motor 8 drives the output end and the traction rod 9 connected to the output end of the driving motor 8 to rotate synchronously. The traction rod 9 is connected by the tension spring 12 at the end during rotation, so that it can drive the adjusting frame 5 to rotate around the horizontal seat 4 during rotation. During the rotation of the adjusting frame 5, it can drive the mounting base 6 on the adjusting frame 5 to yaw, thereby changing the distance between the license plate recognition cameras 1 on the mounting base 6 to achieve focusing. At the same time, due to the mutual engagement of the chain 15 and the sprocket 14, the chain 15 drives the sprocket 14 located on the mounting base 6 to rotate during the swinging process, so that the mounting base 6 maintains the orientation parallel to the base 3, avoiding the license plate recognition camera 1 losing license plate recognition.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to this process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0039] Although embodiments of the present application have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A parking lot scanning code charging device based on license plate recognition, comprising a license plate recognition camera (1), a two-dimensional code display screen (2) fixedly installed on the license plate recognition camera (1), and a distance adjustment device for supporting the license plate recognition camera (1), characterized in that: The distance adjustment device includes a base (3), a horizontal base (4) fixedly installed on the base (3), and an adjustment frame (5) rotatably installed on the horizontal base (4); A driving base (7) is further fixedly installed on the top of the base (3). A traction rod (9) extending to the outside of the adjustment frame (5) is rotatably installed on the driving base (7). A tension spring (12) is connected between the end of the traction rod (9) and the adjustment frame (5). A driving motor (8) is fixedly installed on the top of the base (3), and the driving motor (8) is fixedly connected to one end of the traction rod (9); An installation base (6) is arranged on the adjustment frame (5). An installation shaft (13) is fixedly installed between the bottom of the installation base (6) and the two horizontal bases (4). A sprocket (14) is arranged outside the installation shaft (13). A chain (15) is engaged between the two sprockets (14).

2. The parking lot scanning code charging device based on license plate recognition according to claim 1, characterized in that: The adjustment frame (5) is L-shaped, and the installation base (6) is rotatably installed at the right angle of the adjustment frame (5).

3. The parking lot scanning code charging device based on license plate recognition according to claim 1, characterized in that: The number of the horizontal bases (4) and the adjustment frames (5) is two. The adjustment frames (5) are rotatably installed on the front and rear sides of the two horizontal bases (4). An installation base (6) is rotatably installed between the two adjustment frames (5). The license plate recognition camera (1) is fixedly installed on the installation base (6).

4. The parking lot scanning code charging device based on license plate recognition according to claim 1, characterized in that: The installation base (6) consists of a flat plate connected to the license plate recognition camera (1) and a supporting leg extending downward. The supporting leg part of the installation base (6) rotates between the two adjustment frames (5).

5. The parking lot code-scanning charging device based on license plate recognition according to claim 1, wherein: A connecting nail (10) is fixedly installed on the side surface of the adjustment frame (5). A collar (11) is sleeved outside the connecting nail (10). One end of the tension spring (12) is fixed to the end of the traction rod (9), and the other end is fixed to the collar (11).

6. The parking lot scanning code charging device based on license plate recognition according to claim 1, wherein: The sprocket (14) located between the horizontal bases (4) is fixedly connected to the installation shaft (13), and the sprocket (14) located below the installation base (6) is rotatably connected to the installation shaft (13).

7. The parking lot scanning code charging device based on license plate recognition according to claim 1, wherein: A limit ring (16) is further fixedly installed outside the installation shaft (13), and the limit ring (16) is located at both ends of the sprocket (14).

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