Intersection Turn Control for Blind-Spot Collision Preparation
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Solution Overview
Problem
Conventional vehicle collision alert systems may provide alerts that are too high or too low, failing to appropriately address the varying likelihood of collisions with objects in a vehicle's blind spots during turns at intersections.
Innovation Solution
A vehicle control device and method that includes a system to detect and prioritize potential collisions by integrating radar and camera information to identify objects within a vehicle's blind spot and adjust the alert system to provide a radar and a camera system to detect objects in a vehicle's blind spot and adjust collision avoidance operations based on object location, speed, and direction relative to the vehicle's turn.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conventional device outputs alert information when an object is detected in the blind spot, then the safety alert is provided, but the alert level may be too high or too low depending on the object's location, moving direction, and moving speed
Solution Approach 1:
The patent applies local quality by differentiating alert levels based on the specific characteristics of each detected object. Instead of a uniform alert for all blind spot objects, the system evaluates each object's location, moving direction, and moving speed to assign appropriate alert levels. This resolves the contradiction by making the alert system reliable through accurate collision risk assessment while adaptable to different object scenarios.
Solution Approach 2:
The patent implements dynamics by making the alert level adjustable and variable based on real-time object characteristics. The alert level is not fixed but dynamically determined by the object's location, moving direction, and moving speed. This allows the system to maintain high reliability through accurate risk assessment while achieving adaptability by adjusting alert intensity to match the specific collision risk of each situation.
2Speed
If the host vehicle makes a left turn or right turn at an intersection, then the vehicle changes direction, but the possibility of collision with objects in blind spots varies and cannot be appropriately addressed
Solution Approach 1:
The patent applies preliminary action by executing collision avoidance preparation operations before the actual collision risk materializes. When a turn is detected and objects are identified in the blind spot, the system proactively adjusts the collision determination condition and reduces the time until collision avoidance assist operation starts. This resolves the contradiction by maintaining reliable collision avoidance through advance preparation while allowing normal turning speeds to be maintained.
3Reliability
If the collision determination condition is made more likely to be satisfied, then the collision avoidance operation is triggered more readily, but the time from instruction to execution of the operation is reduced
Solution Approach 1:
The patent resolves this contradiction by performing preliminary actions that simultaneously achieve both goals. The controller executes operations that change the collision determination condition to be more likely satisfied while also reducing the time from instruction to execution. This preliminary preparation ensures that when collision avoidance is needed, both the activation threshold is appropriate and the response time is minimized, eliminating the trade-off between reliability and response time.
Data Source
AI summary
A vehicle control ECU executes a collision avoidance preparation operation when there is a first moving object in the case where a host vehicle intends to make a left turn at an intersection, and when there is a second moving object in the case where the host vehicle intends to make a right turn at the intersection. The first moving object is a moving object that is not detected by a surrounding object detection device and that is approaching the intersection at a speed equal to or higher than a first threshold speed from the left side of the host vehicle. The second moving object is a moving object that is not detected by the surrounding object detection device and that is approaching the intersection at a speed equal to or higher than a second threshold speed from the right side of the host vehicle.