Vehicle Brake System Automatic Collision Response
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Solution Overview
Problem
Existing vehicle brake systems that automatically build up braking power in collision situations may terminate prematurely due to driver panic reactions, potentially leading to hazardous outcomes, as they do not reliably distinguish between conscious driver responses and panic reactions.
Innovation Solution
The brake system automatically builds up braking power based on sensor data from environmental and driving state sensors, and terminates this intervention only when the driver maintains pedal actuation at a defined intensity and duration, distinguishing between conscious and panic reactions through minimum actuation time periods and pedal gradient analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the automatic buildup of braking power is terminated when the driver actuates a driving pedal, then driver control is restored, but panic reactions may cause premature termination and hazardous situations
Solution Approach 1:
The system performs preliminary analysis of pedal actuation characteristics (force, duration, pattern) before deciding to terminate automatic braking. By evaluating these parameters in advance, the system distinguishes between conscious driver responses and panic reactions, ensuring reliable collision mitigation while restoring driver control only when appropriate.
2Reliability
If the automatic buildup of braking power continues without termination conditions, then collision severity is reduced, but driver autonomy is limited
Solution Approach 1:
The system continuously monitors driver pedal actuation and provides feedback by adjusting the automatic braking intervention accordingly. When conscious driver response is detected through feedback analysis of actuation characteristics, the system terminates automatic braking to restore driver autonomy. Otherwise, collision mitigation continues uninterrupted.
3Loss of time
If pedal actuation thresholds are set low for early termination, then driver control is restored quickly, but panic reactions are more likely to trigger premature termination
Solution Approach 1:
The system changes multiple parameters simultaneously for termination decision: pedal actuation force threshold, actuation duration, and actuation pattern. By requiring satisfaction of multiple parameter conditions, the system achieves quick control transfer for conscious responses while filtering out panic reactions that may meet only some criteria.
4Reliability
If multiple conditions are required for termination, then panic reactions are filtered out, but the time to restore driver control increases
Solution Approach 1:
The system evaluates termination conditions periodically at defined intervals during pedal actuation. Rather than requiring all conditions to be met sequentially, the system checks multiple conditions in periodic cycles, allowing quick termination when conditions are clearly met while maintaining reliability through repeated verification.
Data Source
AI summary
In a method for adjusting a brake system of a vehicle, braking power is automatically built up in the event of a collision. The automatic buildup of the braking power may be terminated by a defined driver response when the actuation of a driving pedal of the vehicle at a defined intensity and for a minimum period of time is maintained by the driver.