Vehicle Travel Envelope Adaptation for Obstacle Avoidance
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Solution Overview
Problem
Existing vehicle collision avoidance systems are inadequate in mitigating collisions with obstacles within the traffic lane, as they fail to effectively adapt the vehicle's travel envelope to avoid obstacles, especially when space is limited or when oncoming traffic is involved.
Innovation Solution
A method and device that detect the position and trajectory of obstacles within the traffic lane, adapt the vehicle's travel envelope by shifting it away from the obstacle, and utilize adjacent spaces such as shoulders or unpaved areas to avoid collisions, while also considering driver evasion attempts to minimize system interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the travel envelope is shifted away from the obstacle to avoid collision, then collision risk is reduced, but the vehicle may leave the traffic lane
Solution Approach 1:
The travel envelope is dynamically adapted based on obstacle detection. The system continuously monitors obstacle position and trajectory, then adjusts the travel envelope parameters in real-time to shift the virtual path away from obstacles while maintaining lane discipline through controlled boundary utilization.
Solution Approach 2:
The system changes the parameters of the travel envelope (position, width, orientation) based on obstacle characteristics. When an obstacle is detected, the travel envelope parameters are modified to create a safe corridor that avoids the obstacle while staying within or near traffic lane boundaries.
2Reliability
If the system actively influences lane guidance to steer through a corridor next to the obstacle, then collision mitigation is improved, but driver control may be interfered with
Solution Approach 1:
The travel envelope acts as an intermediary between the driver's intended path and the actual vehicle trajectory. The system subtly guides the vehicle through the adapted travel envelope corridor next to obstacles, providing collision mitigation while maintaining the appearance of driver control, as the guidance is integrated into the existing lane keeping support system.
3Area of stationary object
If adjacent traffic lanes are utilized to enlarge available space, then space for evasion is increased, but the system must detect and respond to oncoming traffic
Solution Approach 1:
The sensor system performs multiple functions: it detects obstacles in the current lane, identifies drivable regions in adjacent lanes, and monitors oncoming traffic. This multi-functional detection capability allows the system to utilize adjacent lanes for evasion when necessary while maintaining awareness of traffic conditions.
Data Source
AI summary
A method is described for avoiding or mitigating a collision of a vehicle with an obstacle in a traffic lane of the vehicle, if the obstacle is at least partially blocking a planned travel envelope of the vehicle, the method including a step of detecting and a step of adapting. In the step of detecting, a position and/or trajectory of the obstacle is detected. In the step of adapting, the travel envelope is adapted with the aid of the position and/or the trajectory, in order to avoid or mitigate the collision.