Vehicle Collision Avoidance via Trajectory Risk Evaluation
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Solution Overview
Problem
Existing collision-avoidance methods in the automotive sector are ineffective at higher speeds, often leading to premature intervention or incomplete avoidance of collisions, as they operate near physical limits, making them dangerous and unreliable.
Innovation Solution
A method that determines risk values for various trajectories to avoid collisions by evaluating forces acting on the vehicle, comparing them to a threshold, and implementing measures such as braking or signaling to prevent collisions before reaching physical limits, while allowing driver intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If collision-avoidance methods operate near physical limits to enable maneuvers at higher speeds, then collision avoidance capability is improved, but safety deteriorates due to dangerous maneuvers
Solution Approach 1:
The system calculates and evaluates multiple possible trajectories in advance before the collision risk becomes critical. By determining risk values for different trajectories ahead of time and comparing them with threshold values, the system can initiate collision-avoidance measures earlier, avoiding the need to perform dangerous maneuvers at the last moment near physical limits.
2Ease of operation
If braking is delayed to avoid premature intervention in driver control, then driver autonomy is preserved, but collision avoidance effectiveness deteriorates at higher speeds
Solution Approach 1:
The system continuously monitors the vehicle's situation, calculates multiple possible trajectories, and evaluates their risk values in real-time. This continuous feedback loop allows the system to determine the optimal moment to intervene by comparing current risk values with threshold values, enabling timely collision-avoidance measures while respecting driver autonomy when risks are low.
3Reliability
If collision-avoidance measures are implemented early to ensure avoidance at higher speeds, then collision avoidance effectiveness is improved, but driver control is prematurely restricted
Solution Approach 1:
The system calculates and evaluates multiple possible trajectories beyond what is strictly necessary for immediate collision avoidance. By determining risk values for various trajectories and comparing them with threshold values, the system can implement partial collision-avoidance measures (such as gentle steering adjustments or early braking warnings) that maintain driver control while still improving collision avoidance effectiveness.
Data Source
Figure 1~2
Figure 3a~3c
AI summary
The invention relates to a method for performing one or more collision-avoidance measures for a vehicle, particularly a motor vehicle. According to the method, the positions of static and dynamic objects (11) are detected in a step (10) and one or more trajectories (21) for the vehicle that avoid collisions with the detected objects (11) are determined in a step (20). According to the invention, a danger value (23) for the detected trajectory or for each of the detected trajectories (21) is determined continuously or periodically in an additional step (22). This danger value (23) constitutes a measure of the forces that act on the vehicle when passing through each trajectory (21). If the detected danger value or values (23) is or are above a selected or predefined threshold value (26), the collision-avoidance measures are then performed in a step (27). The invention further relates to a device for performing the method.