Headlight Modulation for ADAS Disengagement Vigilance Alerts
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Solution Overview
Problem
In vehicles equipped with driving automation systems (DAS), there is a need to alert occupants of potential unplanned disengagement, as their awareness declines with increasing reliance on automated systems, and they must quickly assume driving roles in emergency situations.
Innovation Solution
The system modulates the headlight characteristics, such as intensity, color, and direction, based on calculated likelihoods of unplanned disengagement, using independently controlled light sources and shutters to provide visual alerts that indicate the urgency and source of the disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If driving automation systems are implemented to reduce driver workload, then ease of operation is improved, but operator vigilance deteriorates
Solution Approach 1:
The system performs preliminary action by warning the driver in advance of potential unplanned disengagement events. The headlight modulation system activates before the actual disengagement occurs, providing the driver with advance notice to prepare for taking control, thus maintaining vigilance while benefiting from automation.
Solution Approach 2:
The system implements feedback by continuously monitoring system status and providing real-time visual feedback to the driver through headlight modulation. When the DAS detects conditions that may lead to unplanned disengagement, it immediately communicates this to the driver through altered headlight patterns, creating a closed-loop feedback system that maintains operator awareness.
2Device complexity
If standard alerting systems are used to warn occupants, then device complexity is minimized, but loss of information occurs due to occupant inattention
Solution Approach 1:
The system utilizes color changes in the headlight output to convey different alert levels and information about potential disengagement. By modulating the color temperature or wavelength of the headlight, the system creates visually distinctive signals that are more likely to capture and maintain occupant attention compared to standard monochromatic alerts.
Solution Approach 2:
The system employs periodic action through rhythmic modulation of the headlight characteristics. Rather than continuous or static alerting, the headlights pulse or cycle through different intensity levels and patterns, creating a rhythmic visual signal that naturally draws and holds human attention, thereby reducing information loss due to inattention.
Data Source
AI summary
Systems and methods are provided for modulating headlight characteristics according to a calculated probability of future unplanned disengagement of advanced driver-assistance systems or automated driving systems, collectively referred to as driving automation systems. In particular, some embodiments aim to alert drivers of both a likelihood of unplanned disengagement, as well as a source of unplanned disengagement.