Autonomous Vehicle HMI Termination for Minimal Risk Maneuvers
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Solution Overview
Problem
Existing autonomous driving systems lack clear guidelines on when and how to terminate human-machine interface (HMI) functions during minimal risk maneuvers, particularly in situations where autonomous driving is no longer feasible due to faults or malfunctions.
Innovation Solution
The system provides separate termination processes for internal and external HMI functions, including auditory alerts, seat belt haptic feedback, and pop-up displays, with escalating notification intensity if the driver does not take control within a predetermined time, and automatically initiates minimal risk maneuvers based on fault detection or information acquisition failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the system provides separate termination processes for internal and external HMI functions with escalating notification intensity, then the driver takeover capability is improved, but the device complexity increases
Solution Approach 1:
The HMI termination process is segmented into separate internal and external functions with distinct termination criteria. Internal HMI (driver-facing notifications) terminates when the driver takes control, while external HMI (surrounding vehicle notifications) terminates when the minimal risk maneuver is completed. This segmentation resolves the complexity by creating independent, manageable termination processes for each HMI type.
Solution Approach 2:
The notification intensity dynamically escalates through multiple stages (first notification, second notification with stronger intensity) if the driver does not take control within predetermined time. This dynamic adjustment optimizes driver response while maintaining a structured, manageable notification system that adapts to driver behavior.
2Loss of information
If the system provides multiple notification channels with escalating intensity, then the notification effectiveness to driver is improved, but the energy consumption increases
Solution Approach 1:
The system employs periodic notifications with escalating intensity rather than continuous maximum-intensity notifications. The first notification is provided initially, then a second notification with stronger intensity is provided after a predetermined time elapses. This periodic approach maintains effective driver communication while reducing overall energy consumption compared to sustained high-intensity notifications.
3Ease of operation
If the system automatically clears indications and alerts when minimal risk maneuver is terminated, then the ease of operation is improved, but the reliability may be reduced
Solution Approach 1:
The system uses feedback-based termination detection to determine when the minimal risk maneuver has been successfully completed. The processor continuously monitors vehicle state and maneuver progress, automatically clearing indications and alerts only when termination criteria are met. This feedback mechanism ensures reliable, accurate notification management while maintaining high automation levels.
Data Source
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AI summary
Various embodiments relate to a vehicle for performing minimum risk maneuvers and a method of operating the same. An autonomous driving vehicle includes at least one sensor configured to detect surrounding environment of the vehicle to generate surrounding environmental information, a processor configured to monitor the status of the vehicle to generate vehicle state information and control autonomous driving of the vehicle, and a controller configured to control the operation of the vehicle under the control of the processor.