RFID Magnetic Road Markers for Richer Driving Assist Data
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Solution Overview
Problem
Conventional magnetic markers on roads provide limited information, such as presence, lateral shift, and polarity, which is insufficient for advanced driving assistance systems.
Innovation Solution
A magnetic marker system incorporating a magnetism generating unit and an information providing unit, like an RFID tag, to offer more detailed information to vehicles, enabling enhanced driving assistance through wireless communication and visual patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If only magnetic detection method is used, then the magnetic marker structure is simple, but the amount and type of information that can be acquired is insufficient
Solution Approach 1:
The patent combines multiple information provision methods (magnetic field generation, RFID tags, visual patterns) into a single magnetic marker system. The magnetism generating unit provides magnetic detection information, while RFID tags and visual patterns are integrated into the same marker structure to provide additional information types without requiring separate systems.
Solution Approach 2:
The magnetic marker is designed to perform multiple functions simultaneously: generating magnetic fields for detection, storing information via RFID tags, and providing visual information through patterns. This multi-functional design allows a single marker to provide diverse information types (magnetic, radio frequency, visual) that can be detected by different vehicle sensors.
2Adaptability or versatility
If magnetic marker provides only basic information (presence, lateral shift, polarity), then the marker system is simple, but advanced driving assistance functions cannot be achieved
Solution Approach 1:
The patent adds new dimensions of information provision beyond basic magnetic detection. RFID tags add a radio frequency dimension for information transfer, while visual patterns add an optical dimension. This multi-dimensional approach enables the system to provide rich information types including position, lane ID, traffic information, and vehicle control data.
3Loss of information
If multiple information provision methods are integrated, then more information can be provided to vehicles, but the marker structure becomes more complex
Solution Approach 1:
The patent combines multiple information provision methods (magnetic field generation, RFID tags, visual patterns) into a single magnetic marker system. The magnetism generating unit provides magnetic detection information, while RFID tags and visual patterns are integrated into the same marker structure to provide additional information types without requiring separate systems.
Solution Approach 2:
The magnetic marker is designed to perform multiple functions simultaneously: generating magnetic fields for detection, storing information via RFID tags, and providing visual information through patterns. This multi-functional design allows a single marker to provide diverse information types (magnetic, radio frequency, visual) that can be detected by different vehicle sensors.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system allows for various driving assists, including automatic steering, lane departure warnings, and vehicle control, by providing position, traffic, and other relevant information to vehicles, improving safety and accuracy.
Implementation Method 1
a magnetism generating unit which generates a peripheral magnetic field
Data Source
AI summary
Provided is a driving assistance system using a magnetic marker capable of providing more pieces of information. In the driving assistance system for assisting driving of a vehicle, a magnetic marker (1) including a magnet sheet (11) serving as a magnetism generating unit which generates a magnetic field and also an RFID tag (15) as an information providing unit which provides information to a vehicle side is laid on a travelling road of the vehicle, and the vehicle includes a magnetic sensor serving as a magnetism detecting unit which magnetically detects the magnetic marker (1) and also a tag reader as an information acquiring unit which acquires the information provided by the RFID tag (15) included in the magnetic marker (1).