Lane-Change Override Control for Dual-Collision Risk Avoidance
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Solution Overview
Problem
Existing vehicle control systems fail to effectively reduce the risk of contact between a subject vehicle and both a preceding and obliquely positioned object when a driver intentionally maneuvers to avoid the preceding object, potentially increasing the risk of contact with the obliquely positioned object due to reduced attention.
Innovation Solution
A vehicle control apparatus that includes sensors to detect objects ahead and behind the vehicle, processing units to evaluate risk conditions, and control devices to issue warnings or apply brakes, while overriding automatic controls when the driver is intentionally maneuvering, ensuring safety by prioritizing driver intent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the override function limits the risk reduction function when the driver is operating the steering wheel, then the driver's intentional maneuvering is respected, but the risk of contact with the preceding vehicle increases when the driver maneuvers toward an obliquely positioned vehicle
Solution Approach 1:
The patent applies local quality by making the override function's limitation behavior spatially selective. Instead of uniformly limiting the risk reduction function whenever the steering wheel is operated, the system distinguishes between different spatial contexts: it limits the function when maneuvering away from the preceding vehicle, but maintains the function when maneuvering toward an obliquely positioned vehicle. This localized differentiation resolves the contradiction by preserving driver intent in safe maneuvers while maintaining automated protection in dangerous situations.
Solution Approach 2:
The patent implements dynamics by making the override function's behavior adaptive to real-time spatial conditions. The system continuously monitors the positions of the subject vehicle, preceding vehicle, and obliquely positioned vehicle, and dynamically adjusts whether to limit the risk reduction function based on the calculated maneuver direction and potential collision risks. This dynamic adjustment allows the system to transition between respecting driver intent and providing automated protection depending on the current spatial context.
2Reliability
If the risk reduction function executes automatic braking to avoid the preceding vehicle, then the risk of contact with the preceding vehicle is reduced, but unnecessary automatic intervention occurs when the driver is intentionally maneuvering
Solution Approach 1:
The patent applies segmentation by dividing the override function's limitation logic into distinct spatial segments or zones. The system evaluates the driver's maneuver direction and compares it with the positions of surrounding vehicles to determine which segment of the maneuver space requires automated protection and which segments should respect driver intent. This segmentation allows the system to selectively apply automatic braking only in segments where collision risk exists, avoiding unnecessary interventions in safe maneuvering zones.
3Reliability
If the system does not limit the risk reduction function when the driver maneuvers toward the second traveling lane, then the risk of contact with the preceding vehicle is reduced, but the risk of contact with the obliquely positioned vehicle increases
Solution Approach 1:
The patent applies preliminary anti-action by proactively evaluating potential collision risks with obliquely positioned vehicles before the driver completes the maneuver. The system calculates the projected path of the driver's steering input and checks whether this path would intersect with the obliquely positioned vehicle. If a potential collision is detected, the system preemptively limits the risk reduction function to prevent automatic braking that would cause the vehicle to veer into the obliquely positioned vehicle, thereby counteracting the potential harmful effect before it occurs.
Data Source
AI summary
A processor of a vehicle control apparatus is configured to, in a case where a second object is present within a predetermined range obliquely behind a subject vehicle in a second traveling lane adjacent to a first traveling lane, limit an override function in a case where a first condition is satisfied, a second condition is satisfied, and a third condition is satisfied. The first condition is for determining that a risk of contact between a first object and the subject vehicle is high. The second condition is for determining that the subject vehicle is undergoing a driving operation to move closer to the second traveling lane. The third condition is for determining that a risk of contact between the second object and the subject vehicle is high.