Vehicle Guidance System Handover Control
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Solution Overview
Problem
Current driver assistance systems lack a reliable and safe method for transferring driving responsibility between the driver and the vehicle guidance system, particularly in situations where system limitations or failures occur, potentially compromising safety.
Innovation Solution
A method and system that utilize predefined operating ranges and system states to facilitate a controlled handover of driving responsibility through orderly procedures or fallback solutions, allowing for intuitive driver intervention in extreme conditions, ensuring safe and conscious transfer of control between the driver and the vehicle guidance system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the vehicle guidance system controls the driving function autonomously, then the extent of automation is improved, but the reliability of handover between driver and system deteriorates
Solution Approach 1:
The system performs preliminary actions by detecting handover conditions in advance and issuing takeover requests to the driver before actual handover is needed. This allows the driver to prepare mentally and physically for taking control, ensuring a smooth and reliable transition from autonomous to manual control mode.
Solution Approach 2:
The system implements continuous feedback mechanisms by monitoring driver state (attention level, readiness) and system state (operating conditions, sensor data) to dynamically adjust handover timing and methodology. This feedback loop ensures handover occurs only when both system and driver are ready, improving reliability.
2Adaptability or versatility
If the system provides multiple handover procedures (orderly and fallback), then the adaptability to different situations is improved, but the device complexity increases
Solution Approach 1:
The handover control system is segmented into distinct procedural pathways: orderly handover for normal conditions and fallback handover for critical situations. Each pathway has its own decision logic and execution steps, allowing the system to adapt to different scenarios without requiring a completely redesigned control architecture.
Solution Approach 2:
The system dynamically selects between orderly and fallback handover procedures based on real-time assessment of operating conditions and driver state. This dynamic adaptation allows the system to provide appropriate handover methodology for each situation while maintaining a unified control structure that manages complexity.
3Ease of operation
If the system allows intuitive driver intervention in extreme conditions, then the ease of operation is improved, but the reliability of controlled handover deteriorates
Solution Approach 1:
The system applies preliminary anti-action by implementing predefined operating ranges and system state thresholds that limit when intuitive driver intervention can occur. These pre-established boundaries prevent intervention during normal operation, ensuring it only happens in extreme conditions where it is truly needed, thus maintaining reliability while allowing ease of operation when appropriate.
Data Source
AI summary
A method and a system for controlling a driving function of a vehicle, whereby in a first operating state, the driving function is controlled by a vehicle guidance system, and in a second operating state, the driving function is controlled by a command of a driver, a transition from the first operating state to the second operating state being accomplished with the aid of an orderly handover through a preset handover procedure when it is recognized that a predetermined first condition is fulfilled, or with the aid of a handover in a fallback solution when it is recognized that a predetermined second condition is fulfilled.