Magnetic Marker Identification for Vehicle Lane Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicular systems struggle to uniquely identify magnetic markers laid along the center of a lane, making it difficult to acquire attribute information such as position information.
Innovation Solution
A vehicular system equipped with a magnetic sensor, distance identifying part, and a database that stores attribute information linked to magnetic markers, allowing identification of detected markers by referencing the database using the distance traveled from a reference point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If magnetic markers are arrayed along the center of the lane for lane departure warning and lateral control, then the vehicle position in the lane can be grasped, but it is difficult to uniquely identify a magnetic marker detected by the vehicle
Solution Approach 1:
The system performs preliminary actions by establishing a reference point on the traveling road before detecting magnetic markers. The distance identifying part measures the distance from this reference point to each detected magnetic marker, enabling unique identification. This preliminary distance measurement allows the information acquiring part to reliably acquire attribute information such as position information from the database.
2Device complexity
If only magnetic sensors are used to detect magnetic markers, then the system structure remains simple, but attribute information of magnetic markers cannot be acquired with high certainty
Solution Approach 1:
The magnetic sensor serves multiple functions: it detects the presence of magnetic markers and provides data for distance calculation from the reference point. The database stores attribute information for multiple magnetic markers, and the information acquiring part retrieves the specific marker's attributes by matching the measured distance. This multi-functional approach enables reliable attribute information acquisition without significantly increasing system complexity.
3Reliability
If distance identification is added to the vehicular system to identify magnetic markers, then magnetic markers can be uniquely identified, but the system complexity increases
Solution Approach 1:
The database acts as an intermediary between the distance measurement and the attribute information. The database stores attribute information of magnetic markers linked to their distances from the reference point. When a magnetic marker is detected, the information acquiring part uses the measured distance to query the database and retrieve the corresponding attribute information, enabling unique identification without direct complex interaction between sensors and information processing.
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
Enables accurate identification and acquisition of magnetic marker attribute information, enhancing lane-keeping assistance systems by ensuring precise positioning and navigation.
Implementation Method 1
a magnetic sensor attached to the vehicle to detect the magnetic markers
Data Source
AI summary
A vehicular system includes a measuring unit attached to a vehicle to detect a magnetic marker laid along a traveling road, a database storing position information of the magnetic marker, and a control unit that acquires the position information of the magnetic marker by referring to a storage area of the database. The database has stored therein position information of each magnetic marker to which a distance from a reference point on the traveling road as a starting point to each magnetic marker is linked. By referring to the database by using a distance traveled until the magnetic marker is detected after the vehicle passes over the reference point, position information of newly detected magnetic marker is acquired.