AR Head-Up Display Cues for Remote Brake Light Perception
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Solution Overview
Problem
Current augmented reality head-up displays for vehicles do not effectively provide information about the acceleration of remote vehicles, which is crucial for safe driving, especially for drivers with color-vision impairments or in conditions like bright sunlight or mechanical failures.
Innovation Solution
A system that uses a combination of vehicle sensors, including cameras, communication systems, and electronic ranging sensors, to detect and determine the acceleration of remote vehicles, and displays graphics on the windshield based on this information, ensuring that drivers are aware of the remote vehicle's deceleration status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If color-coded indicator lights are used to convey vehicle status information, then information transmission efficiency is improved, but drivers with color-vision impairments cannot effectively perceive the information
Solution Approach 1:
The patent uses color changes in the virtual brake light indicator to convey different vehicle states (illuminated vs. unilluminated). The system displays a virtual brake light that changes color or intensity based on the actual brake light status, providing visual feedback that is perceivable by drivers with color-vision impairments when combined with other cues.
Solution Approach 2:
The augmented reality head-up display acts as an intermediary between the actual brake light and the driver's perception. It creates a virtual representation of the brake light status that can be enhanced with additional cues (color changes, intensity variations, positional information) to make the information accessible to drivers with color-vision impairments.
2Device complexity
If traditional indicator lights are used, then device complexity is reduced, but drivers with color-vision impairments or in challenging conditions cannot effectively perceive the information
Solution Approach 1:
The patent adds a virtual dimension to the physical brake light by projecting a virtual indicator onto the head-up display. This virtual representation can incorporate multiple dimensions of information (color, intensity, position, size) that enhance perceivability for drivers with color-vision impairments or in challenging lighting conditions, without adding physical complexity to the actual brake light system.
Solution Approach 2:
The system creates a virtual copy of the brake light indicator that displays on the head-up display. This copy can be enhanced with additional visual properties (color changes, intensity variations) that improve perceivability without modifying the physical brake light system, thus maintaining device simplicity while improving reliability.
3Loss of information
If augmented reality head-up display is implemented, then driver awareness of remote vehicle acceleration is improved, but device complexity increases
Solution Approach 1:
The augmented reality head-up display system performs multiple functions: it displays the virtual brake light indicator, conveys acceleration information, and provides enhanced visual cues for drivers with color-vision impairments. By consolidating these functions into a single display system, the patent reduces overall system complexity compared to having separate systems for each function.
Data Source
AI summary
A system for displaying information for an occupant of a vehicle includes a plurality of vehicle sensors, a display, and a controller in electrical communication with the plurality of vehicle sensors and the display. The controller is programmed to detect a remote vehicle in an environment surrounding the vehicle using the plurality of vehicle sensors, determine an intended illumination status of at least one indicator of the remote vehicle using the plurality of vehicle sensors, where the intended illumination status includes an intended lit status and an intended un-lit status, and display a graphic based at least in part on the intended illumination status of the at least one indicator of the remote vehicle using the display.