Dynamic Warning Region Shifting for Vehicle Lateral Guidance
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Solution Overview
Problem
Existing lateral guidance driver assistance systems for road vehicles often generate false warnings due to permanently defined warning regions that do not adapt to the vehicle's trajectory, leading to incorrect interpretations of lane changes as cornering.
Innovation Solution
The warning regions are dynamically shifted using a programmable electronic control unit, distance sensors, and optical sensors to capture obstacles and lane markings, adapting based on detected lane changes, with the time and direction of the lane change defining the new position and width of the warning regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If warning regions are permanently defined in the vehicle coordinate system, then the system structure is simple and easy to implement, but false warnings occur during lane changes as the system cannot distinguish lane changes from cornering
Solution Approach 1:
The warning regions are transformed from static fixed geometrical regions to dynamic regions that are shifted in space and adapted in width based on detected lane changes. The control unit continuously updates the warning region positions and dimensions to match the current driving situation, allowing the system to distinguish between lane changes and cornering maneuvers.
Solution Approach 2:
The patent replaces the purely geometric/coordinate-based warning region definition with an optical detection system using cameras and image processing. The system uses image data of lane markings and road geometry to dynamically determine warning regions, substituting mechanical coordinate transformations with optical field-based detection and processing.
2Reliability
If the warning regions are shifted and adapted based on detected lane changes, then false warnings are reduced, but the system requires complex processing of optical sensor data and lane change detection
Solution Approach 1:
The optical sensor system serves multiple functions: it detects lane markings for positioning, identifies lane changes by tracking marking crossings, and provides geometric information for adapting warning region width. This multi-functional use of the same sensor system reduces overall system complexity while improving reliability.
Solution Approach 2:
The system continuously monitors the vehicle's position relative to lane markings using optical sensors and provides feedback to the control unit. This feedback loop enables real-time detection of lane changes and automatic adaptation of warning regions, with the control unit adjusting warning region parameters based on the detected lane change information.
Data Source
AI summary
A device for lateral guidance assistance for a vehicle includes a programmable electronic control unit and a plurality of distance sensors configured to capture obstacles to a side of and/or behind the vehicle within one or more defined warning regions. The device also includes an optical sensor device configured to capture lane markings and/or a lane width of a current lane of the vehicle and/or of a neighboring lane of the vehicle. The programmable electronic control unit is configured such that at least one of the defined warning regions is shifted based on a detected lane change to a new lane.