Emergency Stop Triggering Based on Driving Situation Complexity
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Solution Overview
Problem
Existing emergency-stop assistance functions in vehicles can be uncomfortable and cause unnecessary traffic disturbances, as they often trigger an emergency stop even when the driver is still capable of manual guidance, and fail to adapt to varying driving complexities.
Innovation Solution
A vehicle guidance system that assesses driver behavior and driving situation complexity to dynamically adjust triggering conditions for an automated emergency stop, allowing for extended or reduced triggering periods based on the complexity of the driving scenario, thereby minimizing unnecessary stops and enhancing comfort and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the emergency-stop assistance function triggers automatically when triggering conditions are met, then driver safety is improved, but driver comfort deteriorates due to unnecessary stops
Solution Approach 1:
The triggering period is made dynamic rather than fixed. The system automatically adjusts the triggering period based on driving situation complexity - extending it during low-complexity situations to prevent unnecessary stops, and shortening it during high-complexity situations to ensure safety. This dynamic adaptation resolves the contradiction by making the system responsive to contextual factors.
Solution Approach 2:
The system changes the parameter of triggering period duration based on the complexity indicator of the driving situation. By modifying this key parameter dynamically, the system achieves both safety (by triggering when necessary) and comfort (by avoiding unnecessary triggers), thus resolving the technical contradiction between reliability and ease of operation.
2Ease of operation
If the triggering period is extended to reduce unnecessary stops, then driver comfort is improved, but response time to actual driver incapacity deteriorates
Solution Approach 1:
The triggering period is dynamically adjusted based on driving situation complexity. During high-complexity situations where rapid response is critical, the triggering period is shortened to ensure quick intervention. During low-complexity situations, it is extended to reduce false alarms, thus resolving the contradiction between comfort and response time.
Solution Approach 2:
The system modifies the triggering period parameter in response to changes in driving situation complexity. This parameter adaptation ensures that the system maintains appropriate responsiveness across different operational contexts, balancing comfort and safety requirements.
3Device complexity
If the emergency-stop assistance function uses a fixed triggering period, then system simplicity is maintained, but adaptability to varying driving complexities deteriorates
Solution Approach 1:
The system transitions from a static fixed triggering period to a dynamic adaptive triggering period that automatically adjusts based on driving situation complexity. This dynamic behavior enables the system to adapt to varying conditions while maintaining automated adjustment logic, resolving the contradiction between simplicity and adaptability.
Solution Approach 2:
The triggering period parameter is changed dynamically based on the complexity indicator. This parameter adaptation allows the system to respond appropriately to different driving situations without requiring complex manual configuration, achieving adaptability while preserving system automation.
4Reliability
If the triggering period is shortened to ensure rapid response, then safety is improved, but unnecessary stops increase causing traffic disturbance
Solution Approach 1:
The triggering period is dynamically adjusted based on driving situation complexity. During low-complexity situations where rapid response is less critical, the triggering period is extended to prevent unnecessary stops and traffic disturbances. During high-complexity situations, it is shortened to ensure safety, thus resolving the contradiction between safety response and traffic disturbance.
Solution Approach 2:
The system modifies the triggering period parameter based on the complexity indicator to balance safety and traffic flow. This adaptive parameter change reduces harmful effects by avoiding unnecessary emergency stops while maintaining rapid response capability when truly needed.
Data Source
AI summary
A vehicle guidance system for a motor vehicle is configured to determine a complexity indicator in relation to the complexity of a driving situation of the motor vehicle and to determine one or more trigger conditions as a function of the complexity indicator. The vehicle guidance system is further configured to cause an automated emergency stop of the motor vehicle if one or more trigger conditions occur.