Vehicle Collision Avoidance Activation Area Adjustment
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Solution Overview
Problem
Existing vehicle collision avoidance systems often activate unnecessary driving assistance when distinguishing between target and non-target objects is difficult, causing discomfort to passengers due to improper activation during steering operations.
Innovation Solution
A driving assistance control apparatus that adjusts the activation area for collision avoidance based on the vehicle's curvature radius and steering stability, using a reduced activation area when the curvature radius is low and the vehicle is making a constant turn, to prevent unnecessary assistance and ensure proper collision avoidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reference activation area is used for collision avoidance assistance, then collision avoidance capability is improved, but unnecessary assistance is activated during steering operations causing passenger discomfort
Solution Approach 1:
The patent applies dynamics by making the activation area adjustable based on vehicle operating conditions. The control unit dynamically switches between a reference activation area and a reduced activation area depending on whether the vehicle is undergoing steering operations, as determined by curvature radius calculations. This dynamic adjustment ensures collision avoidance assistance is activated appropriately without causing unnecessary alerts during normal steering.
Solution Approach 2:
The patent changes the spatial parameter of the activation area based on vehicle state. When the curvature radius exceeds a threshold indicating steering operations, the system reduces the activation area dimensions to prevent unnecessary assistance activation. This parameter change resolves the contradiction by adapting the detection zone to current driving conditions.
2Object-affected harmful factors
If the activation area is reduced during steering operations, then unnecessary assistance activation is reduced, but collision detection capability may be compromised
Solution Approach 1:
The system dynamically adjusts the activation area based on real-time vehicle state assessment. By continuously monitoring curvature radius and comparing it to a threshold, the control unit determines when to switch between reference and reduced activation areas, ensuring collision detection capability is maintained when needed while reducing false activations during normal steering.
Solution Approach 2:
The patent changes the activation area parameter conditionally based on steering detection. When steering operations are identified through curvature radius calculation, the system reduces the activation area parameters; otherwise, the full reference activation area is maintained, optimizing both false alarm reduction and collision detection capability.
3Reliability
If driving assistance is activated during constant turns, then collision avoidance is maintained, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by calculating the curvature radius in advance to determine the vehicle's turning state before adjusting the activation area. This preliminary assessment allows the system to proactively switch between reference and reduced activation areas, ensuring collision avoidance assistance remains appropriate during constant turns without requiring complex real-time adjustments.
Data Source
AI summary
In a driving assistance control apparatus for a vehicle, an acquisition unit is configured to acquire a detected traveling state of the vehicle and a detected traveling environment of the vehicle. A control unit is configured to, when a curvature radius of a travel trajectory of the vehicle is equal to or less than a predetermined radius threshold, cause a driving assistance unit to perform collision avoidance assistance using, as an activation area of the collision avoidance assistance, a reduced activation area obtained by reducing a reference activation area, and when determining that the vehicle is making a constant turn, cause the driving assistance unit to perform the collision avoidance assistance by using the traveling state of the vehicle and the traveling environment of the vehicle and the reference activation area even if the curvature radius of the travel trajectory is equal to or less than the radius threshold.