Novel road marking based on millimeter wave radar identification and installation method thereof

Abstract

The invention discloses a novel road marking based on millimeter-wave radar recognition and an installation method thereof, and relates to the field of road marking, the novel road marking based on millimeter-wave radar recognition is formed by splicing a high-reflectivity aluminum bottom plate, a rear side plate, a left side plate and a right side plate, the whole is of a trapezoidal shovel-shaped structure, installation holes are symmetrically formed in the rear side plate, and the left side plate and the right side plate are arranged in the installation holes. According to the invention, obvious signal reflection can be generated in the detection range of the millimeter wave radar, the lane line detection precision of the millimeter wave radar is improved, the lane line identification and tracking precision and stability of the millimeter wave radar can be improved especially in severe weather or in an environment with insufficient light, and the reliability and adaptability of an automatic driving system or a driving assistance system are enhanced.

Description

Technical Field

[0001] The invention relates to the field of road markings, and in particular to a novel road marking based on millimeter wave radar recognition and an installation method thereof. Background Art

[0002] At present, there are various types of road markings, such as hot-melt markings, room temperature cold paint markings, etc. In the field of autonomous driving, the vehicle's ability to perceive the surrounding environment, especially the road markings ahead, is crucial. Existing road marking perception mainly relies on cameras and automotive radar sensors. However, cameras are greatly affected by environmental factors such as lighting, rain, snow, and fog, resulting in reduced recognition of markings. Although millimeter-wave radar is less affected by bad weather and has low cost, it cannot correctly identify adjacent lanes and road boundaries in the absence of roadside infrastructure and multiple lanes. Therefore, in order to meet the needs of autonomous driving, lane keeping systems, etc. for vehicle sensors to accurately detect road lane lines, it is of great significance to develop a highly reflective road marking. Summary of the invention

[0003] In order to make up for the shortcomings of the existing technical problems, the purpose of the present invention is to provide a new type of road marking that can be recognized by the radar system of an autonomous driving car and its installation method, as a supplement to the lane line detection system composed only of a camera or a lidar, to improve the reliability of the entire system in extreme cases.

[0004] In order to solve the problems of the prior art, the technical solution of the present invention is as follows:

[0005] A new type of road marking based on millimeter wave radar recognition, the new type of road marking is spliced ​​by a high-reflectivity aluminum bottom plate, a rear side plate, a left side plate, and a right side plate, and the whole is a trapezoidal shovel-shaped structure, and the rear side plate is symmetrically provided with mounting holes.

[0006] Preferably, the new type of road marking is arranged with reference to the existing raised vibrating marking, and the overall height of the new type of road marking is 8mm-11mm.

[0007] Preferably, the three sides of the aluminum bottom plate are provided with raised grooves, and the rear side plate, the left side plate and the right side plate are provided with grooves, and the side plate grooves correspond to the raised grooves.

[0008] A novel road marking installation method comprises the following steps:

[0009] A1. Use a road cutting machine to cut out an installation groove along the border with a width larger than the size of the new road marking line, clean the debris and dust in the installation groove and keep it dry;

[0010] A2. Apply the adhesive evenly to the bottom of the aluminum material, ensuring that the coating thickness is consistent and fully covered;

[0011] A3. Embed the new road markings partially or completely into the road surface according to the design requirements, tap them lightly with soft tools to make them fit the road surface, and clean up the excess adhesive squeezed out;

[0012] A4. During the curing period of the adhesive, place evenly distributed weights on the surface of the new road marking to fix it, and check regularly for deviation;

[0013] A5. After the adhesive is cured, use low dielectric constant materials to fill and compact the installation slot area in layers to ensure that it is filled, tightly bonded, and has a smooth surface.

[0014] A6. Install all new road markings in the designated positions in sequence. Adjacent new road markings should maintain a design spacing of 500mm between them. New road markings on adjacent lanes should be arranged alternately. After installation, conduct an overall inspection and make necessary adjustments and reinforcements.

[0015] Preferably, the low dielectric constant material is polyethylene or polypropylene.

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] The invention is made of highly reflective aluminum material, which can produce significant signal reflection within the detection range of the millimeter-wave radar, thereby improving the accuracy of lane line detection by the millimeter-wave radar. Especially in severe weather or low-light environments, the millimeter-wave radar can improve the accuracy and stability of lane line recognition and tracking, thereby enhancing the reliability and adaptability of the autonomous driving system or the driving assistance system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the convex groove structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the groove structure of the present invention.

[0021] Figure 4 It is a schematic diagram of a specific implementation of the present invention.

[0022] Figure numerals: 1, bottom plate; 2, rear side plate; 3, left side plate; 4, right side plate; 5, mounting hole; 6, raised groove; 7, recessed groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] For example, see Figures 1 to 4This embodiment provides a new type of road marking based on millimeter wave radar recognition. The new type of road marking is composed of a high-reflectivity aluminum bottom plate 1, a rear side plate 2, a left side plate 3, and a right side plate 4. The whole is a trapezoidal shovel-shaped structure, and the rear side plate 2 is symmetrically provided with mounting holes 5;

[0025] The three sides of the aluminum bottom plate 1 are provided with raised grooves 6, and the rear side plate 2, the left side plate 3 and the right side plate 4 are provided with grooves 7. The side plate grooves 7 correspond to the raised grooves 6. By inserting the raised grooves 6 into the grooves 7 and applying glue in the grooves 7, the bottom plate 1, the rear side plate 2, the left side plate 3 and the right side plate 4 are spliced;

[0026] The new road markings refer to the layout of existing raised vibrating markings, and the overall height of the new road markings is 8mm-11mm;

[0027] In order to ensure that the radars of vehicles in different directions on both sides of the road marking can detect the new road marking, the two spliced ​​new road markings are arranged symmetrically, the rear side plates 2 of the two new road markings are abutted against each other, and the bolts are passed through the mounting holes 5 on the two rear side plates 2, and the two new road markings are symmetrically spliced ​​with bolts for use.

[0028] The road markings are made of highly reflective aluminum material, which can produce significant signal reflection within the detection range of the millimeter-wave radar, thereby improving the accuracy of millimeter-wave radar lane line detection. Especially in severe weather or low-light conditions, the millimeter-wave radar can improve the accuracy and stability of lane line recognition and tracking, thereby enhancing the reliability and adaptability of the autonomous driving system or driving assistance system.

[0029] Embodiment 2: This embodiment provides a novel road marking installation method based on embodiment 1, comprising the following steps:

[0030] A1. Use a road cutting machine to cut out an installation groove along the border with a width larger than the size of the new road marking line, clean the debris and dust in the installation groove and keep it dry;

[0031] A2. Apply the adhesive evenly to the bottom of the aluminum material, ensuring that the coating thickness is consistent and fully covered;

[0032] A3. Embed the new road markings partially or completely into the road surface according to the design requirements, tap them lightly with soft tools to make them fit the road surface, and clean up the excess adhesive squeezed out;

[0033] A4. During the curing period of the adhesive, place evenly distributed weights on the surface of the new road marking to fix it, and check regularly for deviation;

[0034] A5. After the adhesive is cured, use low dielectric constant material (polyethylene or polypropylene) to fill and compact the installation slot area in layers to ensure that it is filled, tightly bonded, and has a smooth surface.

[0035] A6. Install all new road markings in the designated positions in sequence. Adjacent new road markings should maintain a design spacing of 500mm between them. New road markings on adjacent lanes should be arranged alternately. After installation, conduct an overall inspection and make necessary adjustments and reinforcements.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of road marking based on millimeter wave radar recognition, characterized in that: The novel road marking is formed by splicing a high-reflectivity aluminum bottom plate (1), a rear side plate (2), a left side plate (3), and a right side plate (4), and the whole is a trapezoidal shovel-shaped structure, and the rear side plate (2) is symmetrically provided with mounting holes (5).

2. The novel road marking based on millimeter wave radar recognition according to claim 1 is characterized in that: The new type of road marking refers to the layout of the existing raised vibrating marking, and the overall height of the new type of road marking is 8mm-11mm.

3. The novel road marking based on millimeter wave radar recognition according to claim 1 is characterized in that: The three sides of the aluminum bottom plate (1) are provided with raised grooves (6), and the rear side plate (2), the left side plate (3) and the right side plate (4) are provided with grooves (7), and the side plate grooves (7) correspond to the raised grooves (6).

4. A new road marking installation method, characterized in that: The following steps are involved: A1. Use a road cutting machine to cut out an installation groove along the border with a width larger than the size of the new road marking line, clean the debris and dust in the installation groove and keep it dry; A2. Apply the adhesive evenly to the bottom of the aluminum material, ensuring that the coating thickness is consistent and fully covered; A3. Embed the new road markings partially or completely into the road surface according to the design requirements, tap them lightly with soft tools to make them fit the road surface, and clean up the excess adhesive squeezed out; A4. During the curing period of the adhesive, place evenly distributed weights on the surface of the new road marking to fix it, and check regularly for deviation; A5. After the adhesive is cured, use low dielectric constant materials to fill and compact the installation slot area in layers to ensure that it is filled, tightly bonded, and has a smooth surface. A6. Install all new road markings in the designated positions in sequence. Adjacent new road markings should maintain a design spacing of 500mm between them. New road markings on adjacent lanes should be arranged alternately. After installation, conduct an overall inspection and make necessary adjustments and reinforcements.

5. The novel road marking installation method according to claim 4 is characterized in that: The low dielectric constant material is polyethylene or polypropylene.

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