Active Rear Collision Avoidance via V2X Inversion
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Solution Overview
Problem
Current autonomous vehicle systems lack effective measures for rear-end collision avoidance, particularly when a vehicle at risk of collision approaches from the rear due to driver inattentiveness or system errors, and there is no available avoidable area.
Innovation Solution
An active rear collision avoidance apparatus and method that uses sensors to detect approaching vehicles and determines the possibility of collision, prioritizing avoidance directions based on available spaces in the host vehicle's lane or adjacent lanes, and communicates with neighboring vehicles via V2X technology to request and manage avoidance maneuvers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If obstacle detection and avoidance functions are designed for autonomous vehicle driving, then the autonomous vehicle can recognize and avoid vehicles, pedestrians, and obstacles in its driving direction, but the system lacks effective countermeasures for rear-end collision avoidance when the driver is inattentive or the system fails
Solution Approach 1:
Instead of having the autonomous vehicle actively avoid obstacles in its path, the system inverts the approach by having the vehicle send avoidance request signals to surrounding vehicles (particularly the preceding vehicle) to create avoidable areas, thereby making other vehicles assist in avoiding rear-end collisions with the autonomous vehicle
2Reliability
If the host vehicle attempts to avoid collision by changing lanes or creating avoidable areas, then collision risk is reduced, but the system requires communication with and coordination of surrounding vehicles which increases system complexity
Solution Approach 1:
The avoidance request signal system serves multiple functions: it requests creation of avoidable areas, coordinates with surrounding vehicles, transmits vehicle identification information, and enables response-based avoidance maneuvers, all through a single multi-functional communication mechanism
Data Source
AI summary
The present disclosure relates to an active rear collision avoidance apparatus and method. The apparatus includes a sensor for acquiring information by detecting at least one of a preceding vehicle, a vehicle at risk of collision or other vehicles; and a controller for determining a possibility of collision between the vehicle at risk of collision and the host vehicle, determining a direction of avoidance preferentially from where an avoidable area exists in response to the driving of the vehicle at risk of collision, if the possibility of collision is higher than or equal to a threshold point, controlling the host vehicle to drive to avoid in the determined direction of avoidance, and controlling the host vehicle to drive to avoid a possible collision in response to a response to the transmitted avoidance request signal from the preceding vehicle and/or the other vehicle.