Dynamic Lane Change Guidance Point Adjustment
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Solution Overview
Problem
Conventional navigation devices fail to provide an appropriate point for lane changes based on road conditions, often leading to confusion for drivers, especially at merging or branching points where lane changes are not feasible.
Innovation Solution
A route guidance device that detects the vehicle's position and travel lane, determines if a lane change is necessary, and adjusts the guidance point based on road conditions such as merging points, branching points, curves, and tunnels, ensuring the driver changes lanes at a safe distance from these conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed guidance point is preset for lane change, then the guidance system is simple to operate, but the guidance point may be located immediately in front of a merging point where the driver cannot change lanes smoothly
Solution Approach 1:
The guidance point is made dynamic by adjusting its position based on detected road conditions. When a merging point or branching point is detected within a predetermined distance, the system automatically shifts the guidance point to an appropriate location where lane changes are feasible, rather than using a fixed preset position.
Solution Approach 2:
The system incorporates feedback by continuously detecting road conditions (merging points, branching points) and using this information to adjust the guidance point position. This closed-loop approach ensures the guidance remains reliable while maintaining operational simplicity.
2Reliability
If the guidance point is adjusted based on road conditions, then the lane change guidance becomes more reliable, but the system complexity increases
Solution Approach 1:
The system changes the position parameter of the guidance point based on detected road conditions. By adjusting this single critical parameter rather than overhauling the entire guidance system, the patent achieves improved reliability while minimizing the increase in system complexity.
3Loss of time
If guidance is provided closer to the junction, then the guidance is more timely, but the driver may not have sufficient distance to change lanes safely
Solution Approach 1:
The system performs preliminary detection of road conditions (merging points, branching points) in advance and uses this information to calculate an appropriate guidance point position that ensures sufficient distance for safe lane changes, rather than providing guidance at a fixed distance from the junction.
Data Source
AI summary
A route guidance unit includes: a change determination unit configured to determine whether the host vehicle should change the travel lane to another lane so as to travel toward a junction or an intersection on the travel route; a road determination unit configured to determine whether a road between the position of the host vehicle and the junction or the intersection meets road conditions; and a guide unit configured to provide guidance to change lanes, wherein, when the change determination unit determines that the host vehicle should change the travel lane to the other lane, and the road determination unit determines that the road between the position of the host vehicle and the junction or the intersection meets the road conditions, the guide unit changes a point to provide the guidance depending on the road conditions.