AR Trajectory Display for Driver Assistance Handover Awareness
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Solution Overview
Problem
Modern vehicles face challenges in designing an intuitive interface between human drivers and computer-based control systems, where drivers need timely and easy access to information about vehicle behavior, active support systems, and the necessity of manual intervention.
Innovation Solution
A driver information system that detects other road users and generates a driver information display with graphical objects representing the target trajectory of the ego vehicle, allowing the driver to easily determine future control measures through augmented reality projections on the windshield or center console, incorporating sensors and map data for accurate environmental feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If comprehensive driver assistance systems are implemented with multiple functions and high automation levels, then vehicle safety and driving support are improved, but the complexity of the interface between driver and control system increases, making it harder for drivers to understand system behavior and when manual intervention is needed
Solution Approach 1:
The patent creates a virtual copy of the real-world driving environment by projecting graphical objects representing road users, vehicles, and trajectory information directly into the driver's field of view through augmented reality. This virtual representation simplifies the complex system information into intuitive visual forms that mirror the physical environment, making it easier for drivers to comprehend system behavior without dealing with abstract interface elements
Solution Approach 2:
The augmented reality display serves as an intermediary between the complex driver assistance systems and the driver. Instead of presenting raw sensor data or system status indicators, the system translates this information into graphical objects that represent actual road situations, acting as a mediator that bridges the gap between sophisticated control algorithms and human driver understanding
2Loss of information
If detailed information about system activity and vehicle behavior is provided to the driver, then driver awareness is improved, but the information overload may distract the driver and reduce attention to the actual driving task
Solution Approach 1:
The augmented reality display creates an equipotential information field where all relevant driving information is presented at the same visual plane and distance from the driver. By projecting graphical objects at consistent depths and positions that correspond to their real-world locations, the system ensures that information acquisition does not require the driver to shift focus or change viewing planes, thereby eliminating distraction while maintaining comprehensive awareness
3Loss of information
If the driver information display shows abstract system status indicators, then system functionality is conveyed, but the driver's ability to quickly understand the actual driving situation and required control measures is reduced
Solution Approach 1:
The patent employs color-coded graphical objects to convey different system statuses and driving situations at a glance. Different colors represent different types of road users, vehicle states, or trajectory information, allowing drivers to rapidly comprehend system status and situational context without processing detailed numerical or textual data. This visual encoding accelerates information processing and reduces reaction time
Data Source
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AI summary
In the method for operating a driver information system in an ego-vehicle (1), a further road user (23) is detected in a road region lying in front of the ego-vehicle (1). Via a driver assistance system (6) for an at least partially automatic lateral control of the ego-vehicle (1), according to the further road user (23), a target trajectory of the ego-vehicle (1) is generated and a driver information display is generated and output. In addition, the driver information display comprises a graphic road user object (120) which represents the further road user (23). The driver information display also comprises a trajectory object (122a, 122b) which represents the target trajectory of the ego-vehicle (1). The driver information system in an ego-vehicle (1) comprises a detection unit (2) which is designed to detect a further road user (23) in a road region lying in front of the ego-vehicle (1), and a driver assistance system (6) for an at least partially automatic lateral control of the ego-vehicle (1) which is designed to generate a target trajectory of the ego-vehicle (1) according to the further road user (23). The driver information system also comprises a control unit (3) which is designed to generate a driver information display and to output same. In addition, the driver information display comprises a graphic road user object (120) which represents the further road user (23). The driver information display also comprises a trajectory object (122a, 122b) which represents the target trajectory of the ego-vehicle (1).