Snowy road automatic driving system
The automated driving system uses radio wave-transmitting license plate frames to identify vehicles ahead on snowy roads, addressing the challenge of snow interference with magnetic paint traces, thereby improving safety for autonomous driving.
Patent Information
- Application Number
- JP2025197805
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-11-18
- Publication Date
- 2026-02-10
AI Technical Summary
Existing automatic driving systems struggle to recognize vehicles ahead on snowy roads due to snow accumulation, which interferes with the recognition of magnetic paint-based line traces.
An automated driving system using moving bodies equipped with a license plate frame that transmits radio waves, containing specific information, and a determination unit to identify approaching vehicles, enabling recognition even in snowy conditions.
Enables reliable vehicle recognition on snowy roads by tracing road lines, enhancing safety for AI-based autonomous vehicles.
Smart Images
Figure 2026021618000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to an automatic driving system for driving on snowy roads. [Background technology]
[0002] Conventional technology uses magnetic paint to draw striped line traces, which allows for more robust line tracing than conventional technology. However, when snow accumulates on the vehicle, the snow can make it difficult to recognize the vehicle ahead. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] none [Non-patent literature]
[0004] [Non-Patent Document 1] none Summary of the Invention [Problem to be solved by the invention]
[0005] When tracing a line on a snowy road, avoid hitting the car in front of you. [Brief explanation of the drawings]
[0006] [Figure 1] none DETAILED DESCRIPTION OF THE INVENTION
[0007] An automated driving system for snowy roads consisting of one or more moving bodies. One or more moving bodies have a license plate frame, and repeatedly transmit radio waves from the license plate frame containing one or more pieces of information, such as information on the frame's mounting position (e.g., the front or rear of the moving body), number information, and information on the type of moving body (e.g., whether it is a standard vehicle, a standard self-driving vehicle, or a self-driving snowplow); The present invention utilizes an automatic driving system as described in the claims, characterized in that the one or more moving bodies have a determination unit that determines, from the radio waves, whether or not the moving body in front is approaching.
[0008] The effect of this invention is that it can recognize vehicles ahead even on snowy days. The road is read by line tracing. [Example]
[0009] If size and practicality are not a concern, you can simply glue the microcontroller, battery, and transmitter to the license plate. The general outline of the circuit is shown in Figure 1.
[0010] If a person carries a beacon with the same functionality as a license plate frame, they can be reliably detected. Since autonomous driving is achieved using a different method from AI-based autonomous vehicles, the line tracing autonomous driving method can be applied as a way to make AI-based autonomous vehicles even safer. The magnetic paint used for neodymium magnets is thought to only be able to handle a few centimeters of snow. If it snows so much that it is no longer possible to trace the line, this can be solved by using a vehicle equipped with a snow removal function at the front of the vehicle to remove the snow while tracing the line. In reality, this would involve following behind an autonomous snowplow. Since there is a possibility that the beacon may come off if it is attached to the bumper, we decided to use a frame. There is no problem if it is attached to the bumper instead of the license plate frame. The reason for changing the behavior with IG power etc. is to determine whether the car is parked on the side of the road or waiting at a traffic light. It would be a problem if the car was parked on the side of the road with the engine running. [Explanation of symbols]
[0011] 1 None
Claims
1. An automated driving system for snowy roads consisting of one or more moving bodies. One or more moving bodies have a license plate frame, and repeatedly transmit radio waves from the license plate frame containing one or more pieces of information, such as information on the frame's mounting position (e.g., the front or rear of the moving body), number information, and information on the type of moving body (e.g., whether it is a standard vehicle, a standard self-driving vehicle, or a self-driving snowplow); An automated driving system for snowy roads, characterized in that it has a judgment unit that judges from the radio waves whether one or more moving bodies are approaching a moving body in front.
2. The snowy road automatic driving system described in claim 1, characterized in that one or more moving bodies have the function of recognizing the license plate of a vehicle in front using a camera in front of the moving body, and if the license plate is present but not transmitting radio waves, notifying a specified location.
3. The snowy road automatic driving system according to claim 1, wherein the moving body is a vehicle.
4. 2. The snowy road automatic driving system according to claim 1, wherein the radio waves are radio waves in the 2.4 GHz band.
5. The snowy road automatic driving system according to claim 1, wherein the moving body is a vehicle.
6. The license plate frame has two types of power sources: a constant power source and an IG power source.
2. The snowy road automatic driving system according to claim 1, characterized in that the signal to be transmitted changes depending on the state of the constant power supply and the IG power supply.