Vehicle Brake System Automatic Collision Response
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Solution Overview
Problem
Existing vehicle brake systems do not automatically and effectively build up braking force in response to collisions, potentially leading to increased accident severity and secondary accidents.
Innovation Solution
A method that automatically builds up braking force in vehicles during collisions, differentiated by collision type, using sensor data to determine impact location and adjust braking force gradient, maximum, and delay, with the option to override by driver input, applicable to various brake systems and equipped with a regulation and control device for ESP control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic braking force build-up is implemented in all collision situations, then accident severity is reduced, but driver control and flexibility are limited
Solution Approach 1:
The brake system dynamically adapts its behavior based on collision type. The control device automatically selects different braking strategies (frontal impact braking, rear impact braking, side impact braking) depending on sensor data, making the system flexible and context-appropriate rather than rigidly automatic in all situations.
Solution Approach 2:
The system changes braking parameters (braking force magnitude, build-up rate, duration) based on the detected collision type. This allows the same automatic braking system to provide optimized performance for different accident scenarios while maintaining driver override capability.
2Force
If braking force is built up immediately after collision detection, then vehicle displacement is minimized, but false activation risk increases
Solution Approach 1:
The system performs preliminary assessment of collision parameters before activating automatic braking. Sensors detect and evaluate collision characteristics (direction, magnitude, type) to determine whether automatic braking activation is appropriate, preventing false activation while preparing the system for rapid response when truly needed.
Solution Approach 2:
The control device continuously receives feedback from sensors monitoring vehicle state and collision parameters. This feedback loop allows the system to verify actual collision occurrence and characteristics before committing to automatic braking activation, reducing false positives while maintaining rapid response capability.
3Productivity
If different braking strategies are implemented for different collision types, then braking effectiveness is optimized, but system complexity increases
Solution Approach 1:
The automatic braking system is segmented into distinct control modules for different collision types (frontal impact, rear impact, side impact). Each module contains optimized braking parameters and strategies specific to its collision type, allowing independent optimization without requiring complete system redesign for each scenario.
Solution Approach 2:
A single control device performs multiple functions by selecting from different braking strategies based on collision type. The system universally handles all collision scenarios through one integrated controller that adapts its behavior, avoiding the need for separate dedicated systems for each collision type.
4Loss of time
If hydraulic medium is prefilled in the braking unit, then braking response time is reduced, but energy consumption increases
Solution Approach 1:
The hydraulic medium is prefilled and pressurized in advance during vehicle operation or system initialization, preparing the braking system for immediate response. This preliminary preparation eliminates the time delay associated with hydraulic fluid delivery during emergency braking, though it requires energy investment during the preparation phase.
Data Source
AI summary
In a method for setting a brake system of a vehicle, braking force is built up automatically in the event of a collision. In the process, the position of the collision on the vehicle is determined and the build-up of braking force is implemented as a function of the position of the collision.