Driver Awareness UI with TTC-Based Subtle Collision Cues
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Solution Overview
Problem
Advanced Driver Assistance Systems (ADAS) face challenges in effectively improving driver situational awareness without causing frequent false alarms, which can distract or overwhelm drivers, leading to reduced safety and underperformance in collision prevention.
Innovation Solution
A user interface system that outputs subtle audible, visual, and haptic cues to inform drivers of potential collision threats by conveying a corresponding level of risk through UI elements, using a Time-To-Collision (TTC) parameter to determine the severity of each threat and adjust the intensity of the signals, thereby providing early warnings without alarming or desensitizing the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If strong warning signals are output to elicit immediate driver response, then driver response urgency is improved, but driver distraction and desensitization increase
Solution Approach 1:
The patent applies local quality by differentiating the warning signals based on collision risk levels. Different UI elements with varying intensities are used for different threat levels, rather than applying a uniform strong warning signal to all situations. This allows the system to provide appropriate urgency for each specific threat while avoiding unnecessary strong signals that cause distraction.
Solution Approach 2:
The system changes the parameter of signal intensity based on the collision risk level. By dynamically adjusting the strength and type of UI elements according to the assessed risk, the system maintains driver response urgency for critical threats while reducing distraction from lower-risk situations. This parameter-based differentiation resolves the contradiction between needing strong signals and avoiding driver desensitization.
2Object-affected harmful factors
If FCW is output only during critical situations, then false alarm frequency is reduced, but driver situational awareness for potential threats is limited
Solution Approach 1:
The patent segments the warning system into multiple levels corresponding to different collision risk levels. Instead of a single binary warning state, the system divides threats into categories (e.g., low, medium, high risk) and provides appropriate UI feedback for each segment. This segmentation allows the system to inform drivers of potential threats without triggering full emergency warnings for all situations.
Solution Approach 2:
The system applies partial action by providing scaled warning signals rather than full emergency warnings for all detected threats. For lower-risk situations, subdued UI elements are used that inform the driver without causing alarm or distraction. This partial action approach maintains situational awareness while avoiding the harmful effects of excessive warnings.
3Loss of information
If multiple UI elements are output to inform drivers of all potential threats, then driver situational awareness is improved, but driver cognitive load and distraction increase
Solution Approach 1:
The patent applies local quality by providing differentiated UI elements based on the specific characteristics and risk levels of each detected threat. Rather than presenting all threats uniformly, the system tailors the information presentation to the actual risk level of each object, reducing unnecessary information for low-risk threats while maintaining awareness for higher-risk situations.
Solution Approach 2:
The system uses partial action by selectively presenting information about potential threats based on their risk level. For threats below certain risk thresholds, minimal or no UI elements are displayed. This selective information presentation reduces cognitive load while maintaining situational awareness for threats that actually require driver attention.
Data Source
AI summary
Techniques and systems for User Interfaces (UI) for driver situational awareness are provided. An exemplified UI may output information to give drivers a greater awareness of potential collision threats, without annoying or desensitizing them using frequent or false alarms. Rather than output strong warnings to elicit an emergency driver response, the UI generates subtle early-warning indicators presented as UI elements showing markers to each potential threat relative to a vehicle path. Each object reported in the UI elements indicate information as subtle cues (e.g., audible, visual, and/or haptic feedback) that are weaker magnitude than signals output for forward-collision or other emergency warnings. This subtlety in information presented in the UI is effective at informing a driver, without alarming or distracting them. A driver that is more aware of potential dangers may drive with greater confidence and without fear of threats hidden from their view.