Adaptive Lane Change Control Using Driver Proficiency Thresholds
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Solution Overview
Problem
Existing lane change support devices face issues with setting an optimal threshold time for initiating lane change control, leading to inconveniences or safety risks due to misalignment between driver intent and actual control initiation, or unintended device operation.
Innovation Solution
A lane change support device that adjusts the threshold time for initiating lane change control based on the driver's proficiency level, calculated through steering holding state and surrounding vehicle conditions, allowing for safe and efficient lane changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the threshold time is set to be long, then the safety of lane change control is improved, but the responsiveness to driver intent deteriorates
Solution Approach 1:
The patent applies dynamics by making the threshold time adjustable rather than fixed. The control unit dynamically changes the threshold time based on the driver's proficiency level, which is calculated from operational history. New drivers receive longer threshold times for safety, while experienced drivers receive shorter threshold times for responsiveness, thus resolving the contradiction between safety and responsiveness.
2Loss of time
If the threshold time is set to be short, then the responsiveness to driver intent is improved, but the safety of lane change control deteriorates
Solution Approach 1:
The patent applies parameter changes by modifying the threshold time parameter based on the driver's proficiency level. The control unit calculates proficiency from operational history and adjusts the threshold time parameter accordingly. This allows the system to optimize the balance between responsiveness and safety for each driver's skill level.
3Device complexity
If a fixed threshold time is used, then the device complexity is reduced, but the adaptability to different driver skill levels deteriorates
Solution Approach 1:
The patent applies self-service by enabling the system to automatically evaluate driver proficiency based on operational history and autonomously adjust the threshold time without requiring manual intervention. The control unit calculates proficiency levels and modifies control parameters automatically, allowing the system to adapt to different drivers while maintaining simple operation for the user.
Data Source
AI summary
A lane change support device includes a control unit configured to execute lane change control for enabling a vehicle to automatically change lanes from a lane in which the vehicle is traveling to an adjacent lane. The control unit counts a holding time for which an operation part that is operated to a predetermined operation position to start the lane change control is continuously held at the operation position, starts the lane change control when the counted holding time reaches a predetermined threshold time, and calculates a proficiency level of a driver of the vehicle for an operation of the lane change support device during execution of the lane change control and sets the threshold time to be used for a successive lane change control based on the proficiency level.