Vehicle Steering Control for Oncoming Lane Collision Avoidance
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Solution Overview
Problem
Existing vehicle control apparatuses face challenges in accurately determining the presence of oncoming vehicles and executing steering controls to avoid collisions, often leading to incorrect activation or deactivation of steering controls, which can result in collisions or near-misses with oncoming vehicles.
Innovation Solution
A vehicle control apparatus equipped with sensors and an electronic control unit that determines the presence of oncoming vehicles based on specific moving conditions, such as distance, speed, and lane positioning, to accurately assess the risk of collision and execute steering controls only when necessary, either assisting the driver or autonomously navigating the vehicle to avoid the object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the steering control is executed when an oncoming vehicle approaches the own vehicle, then the own vehicle may contact to the oncoming vehicle or pass just near the oncoming vehicle, but it is preferred that the steering control is not executed when there is an oncoming vehicle approaching
Solution Approach 1:
The system changes the parameter of control execution based on detected conditions. When an oncoming vehicle is detected within a predetermined distance, the steering control is prohibited; when the distance exceeds the threshold, the control is permitted. This dynamic parameter change resolves the contradiction by adapting the control execution state to the real-time spatial relationship between vehicles.
Solution Approach 2:
The system continuously monitors the distance to oncoming vehicles and adjusts the steering control execution accordingly. The feedback loop detects the presence and position of oncoming vehicles, and based on this information, dynamically enables or disables the steering control function, ensuring safe operation while maintaining collision avoidance capability when appropriate.
2Extent of automation
If camera image information and radar information are used to determine the presence of oncoming vehicles, then detection accuracy may be insufficient leading to false positives or false negatives, but using these sensors provides automated detection capability
Solution Approach 1:
The system introduces an intermediary threshold distance parameter that mediates between the automated detection output and the control decision. Rather than directly acting on sensor data with potential errors, the system uses the predetermined distance threshold as an intermediary criterion to determine whether to prohibit steering control, filtering out false detections and improving overall system reliability.
3Reliability
If the steering control is prohibited when an oncoming vehicle is detected, then collision with the oncoming vehicle is avoided, but the steering control may not be executed when there is no actual oncoming vehicle due to sensor limitations
Solution Approach 1:
The system performs preliminary detection and evaluation of oncoming vehicles before executing the steering control decision. By continuously monitoring and evaluating potential oncoming vehicles in advance against the predetermined distance threshold, the system prepares control decisions proactively, reducing response time while maintaining safety through pre-established prohibition criteria.
Data Source
AI summary
A vehicle control apparatus determines that a control start condition is satisfied when there is an object in an area of a moving route of the own vehicle and determine that a control forbidding condition is satisfied when there is an oncoming vehicle which satisfies a predetermined moving condition that the oncoming vehicle moves in an oncoming lane next to a moving lane of the own vehicle and approaches the own vehicle. The vehicle control apparatus determines that the control forbidding condition is not satisfied when a forbidding cancelling condition is satisfied, the forbidding cancelling condition being satisfied when a first me elapses since determining that the oncoming vehicle satisfying the predetermined moving condition disappears after determining that the control forbidding condition is satisfied and executes the steering control when the control start condition is satisfied, and the control forbidding condition is not satisfied.