Collision Avoidance Device Using Turn-Back Steering Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing collision avoidance systems may incorrectly determine a collision possibility during lane changes, leading to unnecessary collision avoidance controls when a driver performs turn-back steering, as they fail to differentiate between intended steering and potential muscular reactions.
Innovation Solution
A collision avoidance device that uses a steering sensor to detect steering angles or torques and an electronic control unit to determine if the driver is performing turn-back steering, thereby inhibiting unnecessary collision avoidance controls by differentiating between intended steering and muscular reactions through average value analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If collision avoidance control is executed based on predicted trajectory during lane change, then collision avoidance between host vehicle and oncoming vehicle is improved, but unneeded collision avoidance control is triggered due to turn-back steering
Solution Approach 1:
The system dynamically adjusts collision avoidance control execution based on real-time steering state detection. When turn-back steering is detected through steering angle/torque sensor analysis, the collision avoidance control is temporarily suspended, allowing the vehicle to complete the lane change maneuver without erroneous intervention. This dynamic adjustment resolves the contradiction by making the control system adaptive to actual driving intentions.
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring steering sensor data and using it to modulate collision avoidance control. The steering state (normal vs. turn-back) serves as feedback that determines whether collision avoidance control should be active or suppressed, preventing unneeded control during lane changes while maintaining safety during actual collision risks.
2Measurement precision
If steering sensor detection is used to identify turn-back steering, then determination accuracy of driver intent is improved, but false detection of muscular reactions as intentional steering may occur
Solution Approach 1:
The system applies a threshold-based detection approach where only steering inputs exceeding certain magnitude and duration criteria are classified as intentional turn-back steering. Minor fluctuations from muscular reactions that fall below the threshold are ignored, while significant steering actions that clearly indicate driver intent are properly detected and recognized.
Data Source
AI summary
A collision avoidance device includes an electronic control unit configured to: determine whether or not a driver of a host vehicle performs turn-back steering based on a detection value of a steering angle or steering torque detected by a steering sensor of the host vehicle; and execute the collision avoidance control for avoiding a collision between the host vehicle and an obstacle in a case where the electronic control unit determines that there is a collision possibility between the host vehicle and the obstacle based on a path of the host vehicle and a position of the obstacle, wherein the electronic control unit is configured not to execute the collision avoidance control while the electronic control unit determines that the driver of the host vehicle performs turn-back steering.