Adaptive Driver Warning System Using Dynamic Points Thresholds
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Solution Overview
Problem
Current automated driving systems generate driver warnings inefficiently, as they often rely on fixed time intervals that do not adapt to varying driving behavior, complexity, or driver feedback, leading to unnecessary warnings in simple maneuvers and inadequate warnings in complex scenarios.
Innovation Solution
A warning system that uses a points value to adapt the time period before warning the driver, adjusting based on driver feedback, driving complexity, and driving states, by monitoring and adapting a points value through a processor and memory system to generate warnings only when a threshold is met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed time interval is used for driver warnings, then the system is simple to operate, but the warning effectiveness deteriorates due to unnecessary warnings in simple maneuvers and inadequate warnings in complex scenarios
Solution Approach 1:
The patent implements a dynamic points-based warning system where the warning threshold adapts based on driving complexity rather than using a fixed time interval. The system calculates a points value that accumulates based on driving complexity parameters (traffic density, road curvature, weather conditions), and only triggers warnings when the points threshold is met. This dynamic adaptation resolves the contradiction by making the system responsive to actual driving conditions while maintaining operational simplicity through automated calculations.
Solution Approach 2:
The system changes the parameter used for warning triggers from a fixed time interval to a variable points value based on driving complexity. By introducing multiple parameters (traffic density, road curvature, weather conditions) that influence the points calculation, the system achieves better warning effectiveness without requiring complex manual configuration, as the parameters are automatically measured and processed.
2Reliability
If driver feedback is frequently requested, then driver engagement is improved, but driver frustration increases due to unnecessary feedback requests during simple maneuvers
Solution Approach 1:
The system dynamically adjusts feedback frequency based on driving complexity by using the same points-based mechanism that controls warnings. During simple maneuvers with low driving complexity, the points accumulate slowly, resulting in less frequent feedback requests. During complex scenarios with high driving complexity, points accumulate faster, increasing feedback frequency appropriately. This resolves the contradiction by aligning feedback demands with actual driver needs.
Solution Approach 2:
The system uses feedback from driving complexity parameters (traffic density, road curvature, weather conditions) to modulate the frequency of driver interaction requests. By continuously monitoring these parameters and adjusting feedback timing accordingly, the system ensures driver engagement during critical moments while minimizing interruptions during routine driving, thus balancing reliability and ease of operation.
3Productivity
If warnings are generated based on fixed time intervals, then the system is easy to implement, but productivity deteriorates due to inefficient warning generation that does not adapt to varying driving conditions
Solution Approach 1:
The patent segments the warning system into distinct functional modules: a monitoring module that tracks driving complexity parameters (traffic density, road curvature, weather conditions), a calculation module that computes the points value based on these parameters, and a warning module that triggers alerts when thresholds are met. This segmentation improves warning efficiency by allowing each module to specialize in its function while maintaining overall system simplicity through modular design and automated processing.
Data Source
AI summary
System, methods, and other embodiments described herein relate to improving driver warnings for automated driving by a vehicle. In one embodiment, a method includes monitoring a vehicle control system for driver feedback during the automated driving. The method also includes adapting a points value at a defined rate according to whether the driver feedback is present. The method also includes, responsive to determining that the points value satisfies a threshold before the driver feedback is present, generating a warning to a driver.