Vehicle Control Device for Oncoming Collision Avoidance
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Solution Overview
Problem
Existing vehicle control systems fail to effectively avoid collisions between a host vehicle and an oncoming vehicle, particularly when both vehicles are close to the center line in their respective lanes.
Innovation Solution
A vehicle control device equipped with a center line detecting unit, an oncoming vehicle detecting unit, a predicted time deriving unit, and a control target oncoming vehicle selecting unit, which detects the center line, identifies oncoming vehicles, calculates collision times, and selects the oncoming vehicle with the shortest predicted collision time as the control target to avoid collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the host vehicle enters the opposite lane for passing, then the host vehicle can overtake slower vehicles, but the host vehicle may collide with oncoming vehicles when both are close to the center line
Solution Approach 1:
The system performs preliminary detection of oncoming vehicles and calculation of collision predicted times before the host vehicle actually enters the opposite lane. By identifying potential collision risks in advance and selecting the oncoming vehicle with the shortest collision predicted time as the control target, the system enables proactive collision avoidance while maintaining overtaking capability
Solution Approach 2:
The system continuously monitors the positions of the host vehicle and oncoming vehicles relative to the center line, calculates collision predicted times, and provides feedback control by selecting the most critical oncoming vehicle as the control target. This feedback mechanism allows dynamic adjustment of avoidance maneuvers based on real-time spatial relationships
2Measurement precision
If the host vehicle travels close to the center line, then the host vehicle can maintain its lane position, but the host vehicle increases collision risk with oncoming vehicles also close to the center line
Solution Approach 1:
The system applies different safety criteria to different spatial zones by specifically monitoring oncoming vehicles that are close to the center line in the opposite lane. By identifying the local risk zone (area adjacent to center line within predetermined distance) and selecting the oncoming vehicle with the shortest collision predicted time in this zone as the control target, the system provides targeted collision avoidance while maintaining normal lane positioning accuracy
Data Source
AI summary
A vehicle control device includes: a center line detecting unit, an oncoming vehicle detecting unit, a predicted time deriving unit, and a control target oncoming vehicle selecting unit. The center line detecting unit detects a center line separating a travel lane where a host vehicle travels from an opposite lane where an oncoming vehicle travels. The oncoming vehicle detecting unit detects the oncoming vehicle. The predicted time deriving unit derives a collision predicted time that elapses before the host vehicle collides with the oncoming vehicle. The control target oncoming vehicle selecting unit selects the oncoming vehicle having the shortest collision predicted time as a control target oncoming vehicle for which collision with the host vehicle is avoided among oncoming vehicles when determining that the plurality of the oncoming vehicles is present in an area adjacent to in the opposite lane and within a predetermined distance from the center line.