Lane Keeping Support Apparatus Driver Notification
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Solution Overview
Problem
Drivers may overestimate the capabilities of lane keeping assist control systems due to inadequate notification when the system switches from lane keeping assist control to lane departure prevention control, leading to potential accidents.
Innovation Solution
A lane keeping traveling support apparatus that selectively switches between lane keeping assist control and lane departure prevention control using different operation modes and visual notifications on a display unit to inform the driver of the control mode, ensuring the driver recognizes the transition and avoids overconfidence in the system's capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system switches from lane keeping assist control to lane departure prevention control without adequate notification, then the lane departure prevention control can be activated to prevent accidents, but the driver may overestimate the capabilities of the lane keeping assist control system
Solution Approach 1:
The patent implements a notification system that provides feedback to the driver when the control mode switches from lane keeping assist control to lane departure prevention control. The notification unit displays visual information on a display device to inform the driver of the control mode change, ensuring the driver is aware of the actual control being applied and preventing overestimation of the lane keeping assist control capabilities.
Solution Approach 2:
The patent introduces a notification unit as an intermediary between the control mode switching mechanism and the driver. This intermediary component (display device) mediates the information transfer, translating the internal control state changes into visible notifications that the driver can perceive, thereby bridging the information gap without requiring direct modification of the control systems themselves.
2Speed
If the control gain is set to a relatively large value for lane departure prevention control, then the system can quickly steer the vehicle to prevent lane deviation, but the steering response becomes more aggressive compared to lane keeping assist control
Solution Approach 1:
The patent implements dynamic adjustment of control gain based on the operational mode. When in lane keeping assist control mode, a smaller control gain is applied for smooth, gradual steering assistance. When switching to lane departure prevention control mode, the control gain is increased to provide faster, more aggressive steering response to prevent lane deviation. This dynamic adaptation allows the system to optimize steering characteristics for each specific control objective.
Solution Approach 2:
The patent changes the control parameter (control gain value) depending on the active control mode. The control gain is set to a first value for lane keeping assist control and a second, larger value for lane departure prevention control. This parameter change enables the system to achieve both smooth operation during normal lane keeping and rapid response when lane departure prevention is required.
Data Source
AI summary
A lane keeping traveling support apparatus includes a driving support ECU. The driving support ECU is configured to inform a driver that the LDA control is being performed by causing the driver to have uncomfortable feeling by a movement of a steering wheel and a vehicle behavior when the LDA control is performed. This function is achieved by enhancing responsiveness of the LDA control.