Vehicle Control Apparatus Advancing Collision Avoidance Timing During Turns
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Solution Overview
Problem
When a host vehicle is turning right or left, the limited detection area to the front increases blind spots, leading to a higher probability of delayed collision avoidance control activation and potential collisions with objects that enter the detection area from these blind spots.
Innovation Solution
A vehicle control apparatus that detects objects within a wide detection region including the sides, judges whether the host vehicle has overtaken an object and is turning, and advances the actuation timing of collision avoidance control to reduce the likelihood of collisions by increasing the actuation threshold when turning after overtaking an object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the detection area is limited to the front of the host vehicle, then the detection system can focus resources on the most critical area, but blind spots increase and objects entering from the sides may not be detected in time
Solution Approach 1:
The system performs preliminary detection of objects in the side blind spot areas before the vehicle actually enters the collision course. By detecting objects that are currently outside the main detection area but may enter it due to vehicle turning, the system takes preliminary action to prepare for potential collision avoidance, thus resolving the contradiction between limited detection coverage and collision avoidance reliability
Solution Approach 2:
The system applies preliminary anti-action by advancing the actuation timing of collision avoidance control when a turning maneuver is detected alongside an overtaken object. This提前 activation of collision avoidance measures counteracts the potential harmful effect of blind spots before the object actually enters the detection area, thereby maintaining high reliability without requiring expanded detection coverage
2Reliability
If the detection area is expanded to include side regions, then blind spots are reduced and object detection is improved, but the complexity of the detection system increases
Solution Approach 1:
The detection system is segmented into a main detection area for primary object detection and side detection zones for blind spot monitoring. This segmentation allows the system to maintain focused, simple primary detection while adding targeted side monitoring only where needed, avoiding the complexity of a uniformly expanded detection system
Solution Approach 2:
The system applies different detection qualities to different spatial zones: high-priority detection in the main front area and supplementary detection in the side blind spot regions. This local differentiation allows the system to improve reliability in critical areas without uniformly increasing complexity across the entire detection system
3Reliability
If collision avoidance control is activated earlier, then the likelihood of collision is reduced, but the actuation timing may be advanced unnecessarily causing false alarms
Solution Approach 1:
The actuation timing of collision avoidance control is made dynamic rather than fixed. The system adjusts the actuation threshold based on real-time conditions: when both a turning maneuver and an overtaken object are detected, the threshold is lowered to advance actuation timing. This dynamic adjustment allows early activation only when genuinely needed, reducing false alarms while maintaining high reliability
Data Source
AI summary
When there is a possibility of collision between a host vehicle and objects positioned in a detection region in front of the host vehicle, an ECU implements collision avoidance control for preventing the host vehicle from colliding with an object. The ECU detects the objects positioned in the detection region and judges whether, among the detected objects, there is an object that the host vehicle has overtaken and that is capable of moving within a prescribed range in the vehicle width direction of the host vehicle. If it is judged that the host vehicle is turning to the left or to the right after it has been judged that the host vehicle has overtaken an object, the actuation timing of the collision avoidance control is advanced.