Vehicle Obstacle Avoidance via Predicted Travel Range
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Solution Overview
Problem
Conventional vehicle obstacle detection systems provide unnecessary collision warnings when obstacles move out of the sensing range, distracting drivers and failing to alert them to potential hazards within their predicted travel path.
Innovation Solution
A vehicle obstacle avoidance assist method that tracks previously sensed obstacles and determines a travel range based on the vehicle's gear stage and steering angle, outputting warnings only for obstacles within this range, ensuring drivers are informed of potential hazards regardless of the obstacle's current sensing status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle outputs warnings for all obstacles within the sensing region, then the driver is informed of all detected obstacles, but the driver receives unnecessary warnings that distract attention from actual hazards
Solution Approach 1:
The system performs preliminary action by predicting the vehicle's future travel trajectory based on current steering angle and speed, then proactively identifies obstacles that will intersect with this predicted path. This allows the system to issue warnings for obstacles that haven't yet entered the sensing region but pose future collision risks, while filtering out obstacles that are currently detected but won't affect the vehicle's path.
Solution Approach 2:
The system applies dynamics by continuously updating the travel range prediction as the vehicle's steering angle and speed change. The warning criteria are not static but dynamically adjusted based on real-time vehicle state, allowing the system to adapt which obstacles trigger warnings as the vehicle's intended path evolves.
2Object-affected harmful factors
If the vehicle stops warning when obstacles leave the sensing region, then the system reduces false warnings, but it fails to alert drivers to obstacles in the predicted travel path
Solution Approach 1:
The system transitions from a two-dimensional sensing region (spatial coverage) to a three-dimensional assessment by adding the time dimension through trajectory prediction. Instead of only considering obstacles within the current sensing footprint, the system evaluates obstacles along the predicted path forward in time, creating a dynamic warning zone that extends beyond the static sensor coverage.
Solution Approach 2:
The system performs preliminary identification of potential hazards by calculating which obstacles will intersect the predicted travel path before the vehicle actually reaches them. This allows continuous warning for obstacles that have left the current sensing region but remain relevant to the vehicle's future trajectory.
3Reliability
If the system tracks and warns about all previously sensed obstacles, then no hazard is missed, but unnecessary warnings are generated for obstacles not in the travel path
Solution Approach 1:
The system applies local quality by differentiating the warning status of individual obstacles based on their spatial relationship to the predicted travel path. Each obstacle is evaluated independently: those intersecting the predicted path receive warning status, while those outside the path do not, even if previously detected. This creates a selective warning system that maintains comprehensive monitoring but issues targeted alerts only where necessary.
Data Source
AI summary
A vehicle and an obstacle avoidance assist method thereof are capable of performing obstacle avoidance assist control by tracking a previously sensed obstacle that deviates from a sensing region of a sensor. The obstacle avoidance assist method of a vehicle includes: detecting at least one obstacle near a vehicle using a proximity sensor; determining a travel range corresponding to a predicted travel trajectory of the body of the vehicle based on a gear stage and a steering angle; determining at least one effective obstacle, based on the travel range, from the at least one detected obstacle; and outputting a warning about the determined at least one effective obstacle.