Driver Assistance Trajectory Adaptation
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Solution Overview
Problem
Conventional driver assistance systems do not adequately account for individual driver preferences and road features, leading to discomfort when navigating roads with varying lane widths, obstacles, and traffic conditions.
Innovation Solution
A driver assistance system that uses a controller, sensor system, positioning system, and feedback unit to identify the road, select parameters based on driver preferences and road features, and provide feedback operations to guide the vehicle closer to a preferred trajectory, including haptic feedback and adjust assist forces based on driver resistance and road conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional driver assistance systems use fixed trajectory control, then the system structure is simple, but driver comfort deteriorates on roads with varying lane widths and traffic conditions
Solution Approach 1:
The system dynamically adjusts the preferred trajectory based on real-time road conditions, lane markings, and traffic parameters. The trajectory is not fixed but adapts continuously as the vehicle moves, allowing the system to handle varying lane widths and road configurations without requiring a completely complex reconfiguration of the control architecture.
Solution Approach 2:
The system changes key parameters such as the preferred trajectory position, lateral offset from lane center, and boundary distances based on detected road conditions. By modifying these parameters dynamically, the system achieves adaptability to different road scenarios while maintaining a relatively simple overall system structure.
2Manufacturing precision
If the system provides continuous feedback to guide the vehicle to preferred trajectory, then trajectory adherence improves, but driver comfort deteriorates due to excessive feedback
Solution Approach 1:
The system applies feedback operations selectively rather than continuously. Feedback is provided only when the vehicle deviates beyond acceptable thresholds from the preferred trajectory, and the intensity of feedback is modulated based on the degree of deviation. This partial action approach maintains trajectory adherence while avoiding excessive feedback that would discomfort the driver.
Solution Approach 2:
The system implements a closed-loop feedback mechanism that continuously monitors vehicle position relative to the preferred trajectory and adjusts feedback operations accordingly. The feedback magnitude and type (visual, auditory, haptic) are dynamically determined based on the deviation amount, ensuring trajectory correction without overwhelming the driver.
3Ease of operation
If the system adapts to individual driver preferences and road features, then driver comfort improves, but the complexity of parameter selection and processing increases
Solution Approach 1:
The system automatically detects and adapts to individual driver preferences through learning mechanisms, without requiring manual input or configuration. It self-adjusts parameters such as preferred trajectory position and feedback intensity based on observed driver behavior patterns, thereby improving driver comfort while keeping the interface simple and avoiding complex manual parameter processing.
Solution Approach 2:
The system introduces an intermediate processing layer that translates complex driver preferences and road features into simplified control parameters. This intermediary layer handles the complexity of adapting to individual preferences and road conditions internally, while presenting a simple, unified interface to the driver, thus improving comfort without exposing the driver to parameter processing complexity.
Data Source
AI summary
A method of assisting a driver of a vehicle. A road to be driven by the driver is identified using a position determination unit. A parameter is selected to assist a driver of the vehicle in driving a segment of the road. The parameter includes information on the location of a boundary along the road and a preferred trajectory to be driven along the road. A controller determines whether a current trajectory of the vehicle while travelling the road is deviating from the preferred trajectory of the vehicle along the road. A feedback operation is provided to assist the driver in guiding the vehicle nearer to the preferred trajectory based on the selected parameter.