Active Safety System Configuration Switching for Mode Transitions
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Solution Overview
Problem
Automated motor vehicles transitioning from highly automated to partially automated modes pose a hazard as drivers may have increased reaction time and reduced attentiveness, necessitating earlier and less intense interventions from active safety systems to prevent accidents.
Innovation Solution
A controller that recognizes mode changes and adjusts active safety systems from a first configuration to a second, triggering reactions earlier and with lower intensity, and potentially altering configurations based on driver attentiveness and environmental factors to ensure timely and appropriate safety interventions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the active safety system uses a first configuration with later and more intense reactions optimized for automated driving, then the system intervention intensity is improved for automated modes, but the driver safety is worsened when transitioning to manual control
Solution Approach 1:
The patent implements dynamic configuration switching of the active safety system based on the current driving mode. The controller automatically selects between a first configuration (for automated driving with later, more intense interventions) and a second configuration (for manual driving with earlier, less intense interventions). This dynamic adaptation resolves the contradiction by ensuring the appropriate reaction characteristics are active for each driving mode, preventing safety hazards during transitions.
Solution Approach 2:
The patent changes the reaction parameters of the active safety system based on the driving mode. In automated driving mode, the system uses threshold values and reaction timing optimized for automated response. When manual driving is detected, the controller switches to alternative threshold values that trigger earlier, less intense reactions, allowing the driver more time to respond while preventing accidents. This parameter adaptation resolves the safety contradiction.
2Productivity
If the active safety system triggers reactions later and with higher intensity for automated driving, then the automated control efficiency is improved, but the driver reaction time is worsened when taking over control
Solution Approach 1:
The patent prepares the active safety system in advance for mode transitions by switching configurations proactively. When automated driving is active, the system is configured for efficient automated response. Upon detecting manual driving, the controller预先 switches to a configuration with earlier intervention timing, giving the driver adequate reaction time before hazards materialize. This preliminary adaptation prevents time loss for the driver during mode transitions.
3Extent of automation
If the active safety system uses a single configuration optimized for automated driving, then the automation performance is improved, but the adaptability to different driving modes is worsened
Solution Approach 1:
The patent makes the active safety system multi-functional by implementing multiple configurations within the same system. The first configuration optimizes performance for automated driving, while the second configuration optimizes for manual driving. The controller automatically selects the appropriate configuration based on the current driving mode, enabling the single active safety system to universally serve both automated and manual driving scenarios with optimal characteristics for each mode.
Data Source
AI summary
A controller for changing between a respective first configuration and a respective second configuration of at least one active safety system of an automated motor vehicle is provided. The controller is configured to detect a change in the operating mode of the motor vehicle from an at least highly automated operating mode into a maximally partially automated operating mode and to change the at least one active safety system from the first configuration to the second configuration when a change is detected.