License plate recognition system

Abstract

The utility model relates to the field of license plate recognition devices, in particular to a license plate recognition system which comprises a box body with a built-in cavity, a transparent acrylic plate used for opening and closing the cavity is hinged to the front side of the box body, two vertical plates arranged in a spaced mode and a horizontal plate arranged between the two vertical plates are arranged in the cavity, and the horizontal plate is arranged between the two vertical plates. Arc-shaped guide rails are arranged on the opposite sides of the two vertical plates, the two ends of the horizontal plate are slidably connected with the two arc-shaped guide rails respectively, connecting pieces used for being connected with the vertical plates are arranged on the horizontal plate, two bases arranged in a spaced mode are arranged on the horizontal plate, and mounting plates are vertically arranged on the bases; and a high-definition camera for identifying the license plate is rotationally arranged on the mounting plate, so that the problem that the normal use of the license plate identification system is affected due to the fact that the high-definition camera cannot effectively shoot and identify the license plate because the position heights of different vehicle types and the mounting positions of the license plates are different is solved.

Description

Technical Field

[0001] This utility model relates to the field of license plate recognition devices, and specifically to a license plate recognition system. Background Technology

[0002] License plate recognition systems are an application of computer video image recognition technology in vehicle license plate recognition. License plate recognition is widely used in highway vehicle management and is also a major means of identifying vehicles in electronic toll collection systems, combined with DSRC technology.

[0003] When performing license plate recognition on vehicles, high-definition cameras are usually used to capture and recognize the license plate. However, due to the different heights of different vehicle models and the different installation positions of the license plates, the high-definition cameras may be unable to effectively capture and recognize the license plates, affecting the normal use of the license plate recognition system. Utility Model Content

[0004] The purpose of this utility model is to provide a license plate recognition system that solves the problem that the high-definition camera may be unable to effectively capture and recognize the license plate due to the different heights of different vehicle models and the different installation positions of the license plate, thus affecting the normal use of the license plate recognition system.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A license plate recognition system includes a housing with a built-in cavity. A transparent acrylic plate, hinged to the front of the housing, is used to open and close the cavity. Two spaced-apart vertical plates and a horizontal plate positioned between the two vertical plates are located within the cavity. Each of the two vertical plates has an arc-shaped guide rail on its opposite side. The two ends of the horizontal plate are slidably connected to the two arc-shaped guide rails. A connector for connecting to the vertical plates is provided on the horizontal plate. Two spaced-apart bases are provided on the horizontal plate, and a vertically mounted mounting plate is mounted on each base. A high-definition camera for recognizing license plates is rotatably mounted on the mounting plate.

[0007] A further technical solution is that vertically arranged support plates are provided on both sides of the horizontal plate, and mounting blocks are provided on both support plates. The mounting blocks are provided with arc-shaped grooves of a size that are adapted to the arc-shaped guide rail. The arc-shaped guide rail is slidably disposed in the arc-shaped grooves. Connecting plates are provided on both sides of the mounting blocks, and the connecting plates are connected to the support plates by screws.

[0008] A further technical solution is that the connector includes a fixing block connected to the support plate, both of the upright plates are provided with arc-shaped openings, the fixing block is provided with a bolt fixedly connected, the bolt thread passes through the arc-shaped opening and is threaded with a nut.

[0009] A further technical solution is that each of the two upright plates has a spacer block and a first protective plate connected to the spacer block at its upper and lower ends on the side that is far apart from each other. The first protective plate is connected to the inner wall of the box by bolts.

[0010] A further technical solution is that the front side of the horizontal plate is provided with two spaced-apart second protective plates.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] By incorporating rotating high-definition cameras on the mounting plate—that is, by rotating two cameras—different shooting positions can be easily adjusted, thus facilitating the image recognition of vehicle license plates at different heights. Furthermore, the horizontal plate and curved track are slidably connected, allowing for easy adjustment of the shooting angles of the two high-definition cameras. The entire device has a simple structure, while expanding the shooting area of ​​the high-definition cameras and improving the efficiency of high-definition camera image recognition. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a license plate recognition system according to the present invention.

[0014] Figure 2 This is a longitudinal sectional view of the overall device in this utility model.

[0015] Figure 3 This is a schematic diagram of the internal structure of the box in this utility model.

[0016] Figure 4 This is a schematic diagram showing the connection between the arc-shaped guide rail and the mounting block in this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Example:

[0019] refer to Figures 1 to 4As shown, a license plate recognition system is disclosed, including a housing 1 with a built-in cavity. The front side of the housing 1 is hinged with an acrylic plate 2 that is transparent and used to open and close the cavity. The cavity has two spaced-apart vertical plates 3 and a horizontal plate 4 disposed between the two vertical plates 3. Each of the two vertical plates 3 has an arc-shaped guide rail 5 on its opposite side. The two ends of the horizontal plate 4 are slidably connected to the two arc-shaped guide rails 5 respectively. The horizontal plate 4 has a connector for connecting to the vertical plates 3. The horizontal plate 4 has two spaced-apart bases 6. The bases 6 have vertically mounted mounting plates 7. A high-definition camera 8 for recognizing license plates is rotatably mounted on the mounting plates 7.

[0020] In this invention, a high-definition camera 8 is mounted on the mounting plate 7, which is configured to rotate. This allows for easy adjustment of different shooting positions, thereby facilitating the identification of vehicle license plates at different heights. The horizontal plate 4 and the arc-shaped track are slidably connected, making it easy to adjust the shooting angle of the two high-definition cameras 8. The entire device has a simple structure, while expanding the shooting area of ​​the high-definition cameras 8 and improving the efficiency of high-definition camera image recognition.

[0021] refer to Figure 3 and Figure 4 As shown, a bolt is fixed on the high-definition camera 8. The bolt thread passes through the mounting plate 7 and is connected to a nut. That is, after the orientation of the high-definition camera 8 is adjusted, the nut is tightened to fix the high-definition camera 8 and the mounting plate 7, so as to prevent the high-definition camera 8 and the mounting plate 7 from rotating relative to each other during subsequent work.

[0022] Both sides of the horizontal plate 4 are provided with vertically arranged support plates 9. Each of the two support plates 9 is provided with a mounting block 10. The mounting block 10 is provided with an arc groove 11 of a size that matches the arc guide rail 5. The arc guide rail 5 is slidably disposed in the arc groove 11. Both sides of the mounting block 10 are provided with connecting plates 12. The connecting plates 12 are connected to the support plates 9 by screws.

[0023] By sliding the arc-shaped guide rail 5 within the arc-shaped groove 11, it is easy to adjust the entire horizontal plate 4 according to the bending direction of the arc-shaped guide rail 5, thereby facilitating the adjustment of the camera angle of the high-definition camera 8.

[0024] The connector includes a fixing block 13 connected to the support plate 9. Both upright plates 3 are provided with arc-shaped openings 14. The fixing block 13 is provided with a bolt for fixing. The bolt thread passes through the arc-shaped opening 14 and is threaded with a nut.

[0025] After adjusting the camera angle of the high-definition camera 8, the horizontal plate 4 is fixed by passing the bolt of the bolt on the fixing block 13 through the arc-shaped opening slit 14 and connecting it with the nut.

[0026] Each of the two upright plates 3 has a spacer block 15 and a first protective plate 16 connected to the spacer block 15 at its upper and lower ends on the side that is far apart from each other. The first protective plate 16 is connected to the inner wall of the box body 1 by bolts.

[0027] The front side of the horizontal plate 4 is provided with two spaced-apart second protective plates 17.

[0028] The first protective plate 16 and the second protective plate 17 are both designed to prevent the high-definition camera 8 from being impacted.

[0029] The spacer block 15 allows for a gap between the inner wall of the housing 1 and the first protective plate 16, making it easier for personnel to put nuts on the screws that pass through the arc-shaped opening slit 14.

[0030] In this design, all bolts are of the same type, which facilitates the overall assembly and use.

[0031] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A license plate recognition system, characterized by: The device includes a housing with a built-in cavity. A transparent acrylic plate, hinged to the front of the housing, is used to open and close the cavity. Inside the cavity are two spaced-apart vertical plates and a horizontal plate positioned between the two vertical plates. Each of the two vertical plates has an arc-shaped guide rail on its opposite side. The two ends of the horizontal plate are slidably connected to the two arc-shaped guide rails. The horizontal plate has connectors for connecting to the vertical plates. The horizontal plate also has two spaced-apart bases. A vertically mounted mounting plate is mounted on each base, and a high-definition camera for recognizing license plates is rotatably mounted on the mounting plate.

2. The license plate recognition system of claim 1, wherein: Both sides of the horizontal plate are provided with vertically arranged support plates, and both support plates are provided with mounting blocks. Each mounting block is provided with an arc-shaped groove of a size that matches the arc-shaped guide rail. The arc-shaped guide rail is slidably disposed in the arc-shaped groove. Both sides of the mounting block are provided with connecting plates, which are connected to the support plates by screws.

3. The license plate recognition system of claim 2, wherein: The connector includes a fixing block connected to the support plate. Both upright plates are provided with arc-shaped openings. The fixing block is provided with a bolt that is fixedly connected to it. The bolt thread passes through the arc-shaped opening and is threaded with a nut.

4. The license plate recognition system of claim 1, wherein: Each of the two upright plates has a spacer block and a first protective plate connected to the spacer block at both ends of the opposite side. The first protective plate is connected to the inner wall of the box by bolts.

5. The license plate recognition system of claim 1, wherein: The front side of the horizontal plate is provided with two spaced-apart second protective plates.

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