Collision Avoidance Device Turning Circle Logic
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Solution Overview
Problem
Existing collision avoidance systems often execute unneeded collision avoidance control even when there is a low likelihood of collision, leading to unnecessary interventions.
Innovation Solution
A collision avoidance device with an electronic control unit that determines whether an oncoming vehicle enters inside a host vehicle's turning circle and only executes collision avoidance control when a stricter collision possibility determination condition is met, thereby suppressing unneeded interventions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If collision avoidance control is executed based on standard determination conditions, then collision safety is improved, but unneeded collision avoidance control is executed reducing system efficiency
Solution Approach 1:
The system changes the determination parameters dynamically based on the oncoming vehicle's position relative to the turning circle. When the oncoming vehicle is inside the turning circle, the system recognizes this positional parameter change and adjusts the collision possibility determination accordingly, suppressing unnecessary control execution while maintaining safety when needed
Solution Approach 2:
The collision avoidance system dynamically adjusts its determination conditions based on real-time positional relationships. The system transitions from static determination to dynamic determination that considers whether the oncoming vehicle enters the turning circle, allowing the control strategy to adapt to changing traffic scenarios
2Reliability
If collision avoidance control is executed conservatively, then collision safety is improved, but false positives increase causing unnecessary interventions
Solution Approach 1:
The system applies different determination qualities to different spatial zones. By identifying whether the oncoming vehicle is inside or outside the turning circle, the system applies localized judgment criteria - being more restrictive when the vehicle is inside the turning circle (where escape is likely) and maintaining standard criteria when outside, thereby reducing false positives while preserving safety
Solution Approach 2:
The system creates a virtual model of the turning circle based on the host vehicle's turning radius and uses this copied geometric representation to determine spatial relationships. This virtual turning circle model allows the system to predict potential collision zones without requiring complex real-time trajectory calculations
Data Source
AI summary
A collision avoidance device includes an electronic control unit configured to: determine whether or not an oncoming vehicle enters inside a turning circle of a host vehicle turning; and execute a collision avoidance control in a case where the electronic control unit determines that there is a collision possibility between the host vehicle and the oncoming vehicle, wherein the electronic control unit is configured not to execute the collision avoidance control when the electronic control unit determines that the oncoming vehicle enters inside the turning circle of the host vehicle.