Road ground patch for enhancing radar perception

Abstract

The utility model discloses a road ground patch for enhancing radar perception, which comprises a ground patch body, an active radio frequency identification electronic tag and release paper, the back surface of the ground patch body is coated with a road adhesive, the active radio frequency identification electronic tag is embedded in the ground patch body, road traffic information is written in the active radio frequency identification electronic tag, and the release paper is arranged on the ground patch body. The shape and size of the release paper are the same as those of the floor sticker body, and the release paper is attached to and covers the surface of the road adhesive on the back face of the floor sticker body. The road ground paste is convenient to paste and install, has the function of a common ground paste, realizes mutual communication between an automatic driving vehicle and an intelligent road infrastructure, and can achieve the purpose of guiding the automatic driving vehicle to run; in combination with the radar carried by the automatic driving vehicle, the network system can greatly improve the capability of capturing and analyzing the surrounding environment information of the automatic driving system, and provides a more reliable and safer driving guarantee for the automatic driving system in a complex and changeable road environment.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle cooperative radio frequency technology, and in particular relates to a road surface sticker that enhances radar perception. Background Technology

[0002] In autonomous driving scenarios, vehicles perceive their surroundings and make decisions using onboard sensors. The sensor configurations of different autonomous vehicles are basically the same, employing a combination of visible light / infrared cameras, LiDAR, millimeter-wave radar / ultrasonic radar, and a satellite positioning-inertial navigation system. However, relying solely on the diverse sensors built into the vehicle to perceive the surrounding environment has significant limitations and shortcomings. Limited by sensor performance, the accuracy of recognizing distant objects is limited, and it is ineffective at handling obscured road information. Especially in complex road sections such as curves and intersections, capturing blind spot information becomes a major challenge. These problems significantly challenge the safety and reliability of autonomous driving.

[0003] At present, autonomous vehicles need onboard sensors to perceive the environment and collect information in real time, and onboard computers to process the information in real time, which places high demands on sensing equipment, processing equipment and network equipment.

[0004] Level 4 and higher autonomous driving systems can interact with other vehicles and roadside facilities, thereby enhancing the vehicle's environmental perception capabilities. Therefore, information units need to be deployed on roads and along roadsides to facilitate real-time information sharing between autonomous vehicles and digital road infrastructure. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a road decal that enhances radar perception.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A road sticker designed to enhance radar perception includes a sticker body, an active RFID tag, release paper, and a photovoltaic power supply device. The back of the sticker body is coated with a road adhesive. The active RFID tag is embedded in the sticker body and contains road traffic information. The photovoltaic power supply device is disposed on the surface of the sticker body and electrically connected to the active RFID tag to supply power to the tag. The release paper has the same shape and size as the sticker body and is adhered to and covers the road adhesive surface on the back of the sticker body.

[0008] Preferably, the road traffic information stored in the active RFID electronic tag is any one or more of the following: road marking information, road sign information, carriageway information, speed limit information, interchange entrance and exit information, and ETC automatic toll collection information.

[0009] Preferably, the front of the ground sticker body is printed or engraved with text or patterns that match the road traffic information stored in the active RFID electronic tag inside.

[0010] Preferably, the floor sticker body is a rectangular plate with rounded corners and a smooth curved slope on the upper surface edge.

[0011] Preferably, the floor sticker body is made of PVC or rubber.

[0012] Preferably, the photovoltaic power supply device is a solar thin-film battery.

[0013] Preferably, the floor sticker body is provided with an embedded radar signal enhancer to enhance the reflected signal strength, bandwidth and directionality of the vehicle radar, and the embedded radar signal enhancer is electrically connected to the photovoltaic power supply device.

[0014] Preferably, the embedded radar signal enhancer is composed of an array of multiple passive resonators.

[0015] Preferably, the ground sticker body is equipped with an Internet of Things (IoT) module for uploading road information to a cloud server in real time and sharing data with the traffic management center and other autonomous vehicles through the IoT platform.

[0016] Preferably, the road adhesive on the back of the floor sticker body is made of a waterproof and weather-resistant adhesive.

[0017] The beneficial effects of this utility model are:

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] This utility model is easy to stick and install. While having the functions of ordinary floor stickers, it enables communication between autonomous vehicles and intelligent road infrastructure, allowing the road floor stickers to guide the autonomous vehicles. Combined with the radar and network systems on the autonomous vehicles, it can greatly improve the autonomous driving system's ability to capture and analyze information about the surrounding environment, and also provide more reliable and safer driving protection in complex and ever-changing road environments. Attached Figure Description

[0020] Figure 1 This is a top view of the present invention;

[0021] Figure 2This is a side view of the present invention;

[0022] Figure 3 This is a flowchart illustrating the workflow of this utility model.

[0023] Figure 4 This is a schematic diagram of the working process of this utility model.

[0024] In the diagram: 1. Ground sticker body; 2. Active RFID electronic tag; 3. Embedded radar signal enhancer; 4. Internet of Things module; 5. Photovoltaic power supply device; 6. Release paper; 7. Vehicle antenna; 8. Encrypted carrier radio frequency signal; 9. Radio frequency beam; 10. RFID reader; 11. Ground. Detailed Implementation

[0025] 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.

[0026] like Figure 1 , 2 As shown, this utility model provides a technical solution: a road sticker to enhance radar perception, comprising a sticker body 1, an active RFID tag 2, release paper 6, and a photovoltaic power supply device 5. The back of the sticker body 1 is coated with a road adhesive. The active RFID tag 2 is embedded in the sticker body 1, and the active RFID tag 2 contains the road traffic information. The photovoltaic power supply device 5 is disposed on the surface of the sticker body 1 and electrically connected to the active RFID tag 2 to supply power to the active RFID tag 2. The release paper 6 has the same shape and size as the sticker body 1 and is adhered to and covers the road adhesive surface on the back of the sticker body 1.

[0027] like Figure 1-4As shown, before use, traffic management units or right-of-way authorization units use RFID readers to write and compile the road traffic information in the active RFID electronic tag 2. After the relevant road traffic information is updated, it can also be rewritten and compiled using RFID readers. When using, peel off the release paper 6 on the back of the ground sticker body 1, stick the back of the ground sticker body 1 to the corresponding road surface 11, and power the active RFID electronic tag 2 through the photovoltaic power supply device 5. When an autonomous vehicle enters the recognition range of the active RFID tag 2, the radio frequency beam 9 emitted by the vehicle's onboard antenna 7 will activate and drive the active RFID tag 2 in the ground sticker body 1. The active RFID tag 2 obtains its working energy from the radio frequency beam 9. The active RFID tag 2 emits an encrypted carrier radio frequency signal 8. The onboard RFID reader 10 receives the encrypted carrier radio frequency signal 8 and decodes and transmits the received information. Combined with the information obtained by the vehicle's radar and other sensing devices, it can help the autonomous driving system to comprehensively judge the driving environment. This not only improves the robustness of the autonomous driving algorithm, making it more composed when facing complex and ever-changing road environments, but also significantly improves the decision-making accuracy of the autonomous vehicle.

[0028] The back of the ground sticker body 1 of this utility model is coated with road adhesive and covered with release paper 6, making it easy to stick and install during use. By embedding an active radio frequency identification electronic tag 2 storing road traffic information inside the ground sticker body 1, this utility model enables communication between autonomous vehicles and intelligent road infrastructure while possessing the functions of ordinary ground stickers. This allows the road ground sticker to guide the autonomous vehicle's driving. Combined with the radar and network system on the autonomous vehicle, it can greatly improve the autonomous driving system's ability to capture and analyze information about the surrounding environment, and also provides more reliable and safer driving protection in complex and ever-changing road environments.

[0029] Furthermore, the road traffic information stored in the active RFID electronic tag 2 is any one or more of the following: road marking information, road sign information, carriageway information, speed limit information, interchange entrance and exit information, and ETC automatic toll collection information. Before use, the active RFID electronic tag 2 in the ground sticker is written with the corresponding road traffic information according to the road, and the ground sticker is then affixed to the road surface of the corresponding road, so that the road ground sticker of this utility model provides corresponding information to autonomous vehicles on different road sections.

[0030] Furthermore, the front of the ground sticker body 1 is printed or engraved with text or patterns that match the road traffic information stored in the active radio frequency identification electronic tag 2 inside it, so as to facilitate the operator to distinguish them.

[0031] Furthermore, such as Figure 1 ,2 As shown, the ground sticker body 1 is a rectangular plate, which is easy to adhere to the road surface and does not affect vehicle driving. Its four corners are rounded, and the upper surface edge is a smooth curved slope. This not only avoids the sharp edges and corners of the ground sticker body 1 from scratching the tires of vehicles traveling on the road, but also reduces stress concentration at the sharp points and improves the strength of the ground sticker body 1.

[0032] Furthermore, the floor sticker body 1 is made of PVC or rubber material, which is pressure-resistant and waterproof, making it easy to use on road surfaces.

[0033] Specifically, the photovoltaic power supply device 5 is a solar thin-film battery that converts light energy into electrical energy through sunlight to power the active RFID electronic tag 2. Moreover, this self-powered system not only extends the lifespan of the floor sticker but also reduces dependence on external power sources, lowering maintenance costs.

[0034] Furthermore, an embedded radar signal enhancer 3 is installed within the ground sticker body 1 to enhance the intensity, bandwidth, and directionality of the reflected signal from the vehicle-mounted radar. Specifically, the embedded radar signal enhancer 3 is composed of an array of multiple passive resonators, which are split-ring resonators (SRRs). Their geometry is designed according to the radar's operating frequency band. When the electric field direction of the incident electromagnetic wave matches the resonant mode of the SRRs, the SRRs will generate a strong local electromagnetic response near the resonant frequency. This effect can influence the propagation and reflection characteristics of the electromagnetic wave. Thus, the intensity, bandwidth, and directionality of the reflected signal are enhanced through resonant coupling. The embedded radar signal enhancer 3 is electrically connected to a photovoltaic power supply device 5, which supplies power to the embedded radar signal enhancer 3.

[0035] Furthermore, the ground sticker body 1 is equipped with an Internet of Things (IoT) module 4 for uploading road information to a cloud server in real time, and sharing data with the traffic management center and other autonomous vehicles through the IoT platform to achieve vehicle-road cooperation. The IoT module supports communication protocols such as 5G and LTE to ensure the real-time performance and reliability of data transmission.

[0036] Furthermore, the road adhesive on the back of the floor sticker body 1 is made of a waterproof and weather-resistant adhesive to ensure the long-term stability of the floor sticker under various environmental conditions.

[0037] In summary, this utility model provides a road decal that enhances radar perception. It is easy to install and, while possessing the functions of a regular decal, achieves efficient information sharing and collaboration between roads and autonomous vehicles by employing an active RFID tag 2, an embedded radar signal enhancer 3, an IoT module 4, and a photovoltaic power supply device 5. The active RFID tag 2 enhances the stability of signal transmission and the recognition distance; the embedded radar signal enhancer 3 significantly improves the reflected signal strength, bandwidth, and directionality of the vehicle-mounted radar through a passive resonator array, especially enhancing perception capabilities in complex road conditions; the IoT module 4 supports communication protocols such as 5G and LTE, uploading road information to the cloud in real time to achieve vehicle-road collaboration; and the photovoltaic power supply device 5 converts solar energy into electrical energy through solar thin-film batteries, providing a continuous power supply for the decal, extending its service life and reducing maintenance costs.

[0038] These innovative designs significantly enhance the environmental perception, decision-making accuracy, and driving safety of autonomous driving systems, adapting to complex and ever-changing road environments. They enable communication between autonomous vehicles and intelligent road infrastructure, allowing road decals to guide autonomous vehicles. Combined with the radar and network systems onboard the autonomous vehicles, they greatly improve the autonomous driving system's ability to capture and analyze information about the surrounding environment, and provide more reliable and safer driving protection in complex and ever-changing road environments.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A radar-aware road pavement enhancement, characterized in that, The ground paste body (1) is coated with a road adhesive on the back, the active radio frequency identification electronic tag (2) is embedded in the ground paste body (1), the active radio frequency identification electronic tag (2) has the road traffic information written therein, the photovoltaic power supply device (5) is arranged on the surface of the ground paste body (1) and is electrically connected with the active radio frequency identification electronic tag (2) for supplying power to the active radio frequency identification electronic tag (2), and the release paper (6) has the same shape and size as the ground paste body (1) and is attached to cover the surface of the road adhesive on the back of the ground paste body (1).

2. The radar-aware road pavement marking of claim 1, wherein, The road traffic information stored in the active radio frequency identification electronic tag (2) is any one or any combination of road marking information, road sign information, carriageway information, speed limit information, interchange information and ETC automatic toll information.

3. The radar-aware road pavement marking of claim 1, wherein, The front of the ground paste body (1) is printed or engraved with text or patterns matching the content of the road traffic information stored in the active radio frequency identification electronic tag (2) therein.

4. The radar-aware road pavement marking of claim 1, wherein, The ground paste body (1) is a rectangular plate with rounded corners and a smooth curved slope on the upper surface edge.

5. The radar-aware road pavement marking of claim 1, wherein, The ground paste body (1) is made of PVC or rubber material.

6. The radar-aware road pavement marking of claim 1, wherein, The photovoltaic power supply device (5) is a solar thin film battery.

7. The radar-aware road pavement marking of claim 1, wherein, The ground paste body (1) is provided with an embedded radar signal enhancer (3) for enhancing the reflection signal strength, bandwidth and directivity of the vehicle-mounted radar, and the embedded radar signal enhancer (3) is electrically connected with the photovoltaic power supply device (5).

8. The radar-aware road pavement marking of claim 7, wherein, The embedded radar signal enhancer (3) is composed of an array of multiple passive resonators.

9. The radar-aware road pavement marking of claim 1, wherein, The ground paste body (1) is provided with an Internet of Things module (4) for uploading road information to a cloud server in real time and sharing data with a traffic management center and other autonomous vehicles through an Internet of Things platform.

10. The radar-aware road pavement marking of claim 1, wherein, The road adhesive on the back of the ground paste body (1) is made of a waterproof and weather-resistant adhesive.

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