Lane-Marking Crossing Warning System Curve Adaptation
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Solution Overview
Problem
Current lane departure warning systems issue unnecessary warnings when a vehicle is turning, distracting the driver and reducing driving safety, while also failing to minimize such alerts effectively.
Innovation Solution
A lane-marking crossing warning system that uses a sensor arrangement to detect lane markings and a control unit to determine if the vehicle is in a curve, adjusting imaginary sensor lines to avoid issuing warnings during curve turns, thus allowing safe path curvature without unnecessary alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the LDW system issues warnings when lane markings are crossed, then driving safety is improved, but unnecessary warnings are generated during curve turns that distract the driver
Solution Approach 1:
The system dynamically adjusts the sensor line position from coinciding with the lane marking line to running at a certain distance from it when a curve is detected. This dynamic adaptation allows the warning system to distinguish between intentional curve navigation and unintentional lane departures, eliminating unnecessary warnings during curved paths while maintaining safety monitoring.
Solution Approach 2:
The system changes the parameter of sensor line position based on curve detection. When a curve is detected, the sensor line is moved from its initial position at the lane marking to a new position offset by a certain distance, adapting the warning threshold to the driving context and reducing false alarms during curve traversal.
2Measurement precision
If the sensor line coincides with the lane marking line, then lane crossing detection precision is maximized, but warnings are issued during safe curve navigation
Solution Approach 1:
The sensor line position is dynamically adjusted based on driving conditions. During curve navigation, the sensor line is moved to a position that accounts for the curved path, allowing the vehicle to navigate curves safely without triggering false lane crossing warnings, while maintaining high detection precision for actual lane departures.
Solution Approach 2:
The control unit acts as an intermediary that processes curve detection information and adjusts the sensor line position accordingly. This intermediary function allows the system to differentiate between safe curve navigation and dangerous lane crossings, adjusting the detection threshold to match the driving context.
3Reliability
If the control unit monitors lane marking crossing continuously, then driving safety is enhanced, but the system complexity increases
Solution Approach 1:
The control unit performs preliminary detection of curve conditions and proactively adjusts the sensor line position before lane crossing evaluation. This preliminary action prevents unnecessary warnings during curves while maintaining continuous safety monitoring, reducing the need for complex real-time adjustments during actual lane crossing events.
Solution Approach 2:
The system changes the monitoring parameter (sensor line position) based on detected driving conditions. By adjusting the reference line position according to curve detection, the system maintains effective safety monitoring with reduced complexity compared to implementing fully adaptive warning logic for all driving scenarios.
Data Source
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AI summary
The present invention relates to a lane-marking crossing warning system (22) for a vehicle (1), the warning system (22) comprising: - a sensor arrangement (2) arranged to detect at least one lane marking line (5, 6, 7) that defines a corresponding lane boundary; - a control unit (3) arranged to determine if the vehicle (1) has entered a curve (9, 9'); and - warning means (13), arranged to issue a warning; When the control unit (3) has determined that the vehicle (1) has entered a curve (9, 9'), the control unit (3) is arranged to determine if an imaginary sensor line (8a, 8b) running a certain distance (11, 12) from said lane marking line (5, 6) has been crossed by the vehicle (1). If that is the case, the control unit (3) is arranged to determine that a warning is to be issued by the warning means (13).