Vehicle Collision Mitigation Braking via Steerable Path Assessment
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Solution Overview
Problem
Existing collision mitigation by braking systems often fail to prevent rear-end vehicle accidents at higher relative speeds, as they wait until steering is no longer possible before initiating autonomous braking, limiting the system's ability to avoid collisions.
Innovation Solution
The implementation of Multi Target Threat Assessor using Non-Steerable Path Assessment algorithms, which consider adjacent paths in addition to the primary path, allows for earlier autonomous braking by determining if the vehicle can steer into adjacent paths, thereby potentially avoiding collisions at higher speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system waits until steering is no longer possible before initiating autonomous braking, then false braking events are reduced, but collision avoidance capability deteriorates at higher relative speeds
Solution Approach 1:
The system performs preliminary assessment of adjacent paths before initiating braking. By evaluating whether steerable paths exist in adjacent lanes ahead of time, the system can trigger braking earlier when no steerable path is available, improving collision avoidance at higher speeds while maintaining reliability through the steerable path check
2Speed
If the system initiates autonomous braking earlier to improve collision avoidance, then collision avoidance capability improves, but false braking events increase
Solution Approach 1:
The steerable path assessment acts as an intermediary condition between the threat detection and braking activation. The system uses the availability of steerable paths in adjacent lanes as a mediating factor to determine whether to initiate braking, reducing false braking events while maintaining early intervention capability
Data Source
AI summary
A collision mitigation system for a vehicle may include a forward sensing system and at least one controller in communication with the forward sensing system. The forward sensing system may be configured to detect objects in front of the vehicle. The at least one controller may be configured to determine whether the vehicle can be steered into a path along side of the vehicle to avoid a collision with detected objects in front of the vehicle and to issue a command to brake the vehicle if the vehicle cannot be steered into the path along side of the vehicle.