Lane Keeping Assistant Torque Adaptation for Collision Risk
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Solution Overview
Problem
Lane keeping assistants in vehicles struggle to balance driver intent with potential collision risks during lane changes, as existing systems may inadvertently deactivate when a driver counters the assistant's torque, potentially leading to unsafe maneuvers.
Innovation Solution
A method and control device for situation-related steering assistance that imports collision signals and adjusts intervention torque based on risk assessments from various sensors and signals, including time-to-collision, ambient conditions, and driver intentions, to enhance safety by merging information from multiple systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lane keeping assistant deactivates when the driver steers counter to the intervention torque, then the driver's intended lane change maneuver is facilitated, but the system may deactivate in unsafe situations leading to collision risks
Solution Approach 1:
The system performs preliminary safety checks by evaluating collision signals from sensors before allowing the lane change maneuver to proceed. This preliminary assessment ensures that the driver's intended lane change does not lead to unsafe situations, resolving the contradiction by preventing deactivation in dangerous scenarios while still facilitating safe lane changes.
Solution Approach 2:
The system continuously monitors collision signals and lane marking information during the lane change process, providing real-time feedback to determine whether to maintain or deactivate the lane keeping assistant. This feedback mechanism ensures that the system responds appropriately to changing conditions, maintaining safety while respecting driver intent.
2Reliability
If the lane keeping assistant maintains intervention torque to prevent unintended lane changes, then driving safety is improved, but the driver's ability to override the system for intentional lane changes is reduced
Solution Approach 1:
The system dynamically adjusts the intervention torque based on real-time collision signals and lane marking information. When safety conditions are met, the system allows driver override with reduced resistance; when collision risks are detected, the system maintains stronger intervention torque. This dynamic adjustment resolves the contradiction by adapting the system's resistance level to the current safety context.
3Measurement precision
If the system uses multiple sensors and signals to assess collision risk, then the accuracy of safety assessment is improved, but the device complexity increases
Solution Approach 1:
The control device is designed to process multiple types of signals (collision signals from various sensors, lane marking information, direction indicator status) through a unified evaluation framework. This multi-functional approach allows the system to leverage diverse data sources for comprehensive safety assessment without requiring separate processing systems for each signal type, thereby managing complexity while maintaining high measurement precision.
Data Source
AI summary
A method for situation-related steering assistance in a lane keeping assistant for a vehicle includes: importing a collision signal; ascertaining a correction signal for adapting an intervention torque for the lane keeping assistant, in order to provide a situation-related steering assistance in the lane keeping assistant. The collision signal represents information about a risk of collision during a lane change, and the correction signal is ascertained using the collision signal.