Vehicle Steering Control Using Opposite-Lane Estimation
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Solution Overview
Problem
Existing vehicle collision avoidance systems face increased processing load and potential failure in detecting oncoming vehicles due to constant monitoring, leading to a risk of collisions.
Innovation Solution
A control device that estimates whether an adjacent lane is an opposite lane and maintains this estimation until a predetermined condition is met, executing steering control to avoid collisions without entering the adjacent lane, thereby reducing processor load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If constant monitoring of oncoming vehicles is performed to ensure collision avoidance, then collision safety is improved, but processor load increases
Solution Approach 1:
The system performs preliminary lane type estimation before collision avoidance execution, categorizing adjacent lanes as opposite-direction or same-direction lanes in advance. This preliminary classification allows the processor to avoid continuous detailed monitoring of oncoming vehicles, reducing processing load while maintaining safety through pre-established lane information
Solution Approach 2:
Instead of constant monitoring, the system updates lane estimation periodically or event-driven (e.g., when lane markings are detected or when entering new road sections). This periodic update mechanism maintains current lane information without requiring continuous processor engagement, balancing safety with processing efficiency
2Speed
If steering control is executed immediately upon detecting a primary object to avoid collision, then collision avoidance response time is improved, but the risk of collision with oncoming vehicles increases
Solution Approach 1:
The system dynamically adjusts the collision avoidance execution strategy based on the estimated lane type. When the adjacent lane is estimated as an opposite-direction lane, the system modifies the steering control to avoid entering that lane, even when rapid avoidance is needed. This dynamic adaptation allows fast response while maintaining safety awareness of oncoming traffic patterns
Solution Approach 2:
The system changes the steering control parameters (such as target steering angle and avoidance trajectory) based on the lane estimation result. When an opposite-direction lane is detected, the system selects avoidance trajectories that do not enter the opposite lane, effectively changing the control parameters to reflect the higher risk of oncoming vehicles while maintaining rapid response capability
Data Source
AI summary
To effectively suppress collision with an oncoming vehicle while reducing a processing load of a processor, provided is a control device for a vehicle comprising an object detection unit configured to detect a object; and a processor. The the processor is configured to execute an estimation process for estimating whether an adjacent lane is an opposite lane, and a avoidance process which executes a steering control for avoiding a collision, when the object detected by the object detection unit satisfies a collision condition, wherein the estimation process, if it is estimated that the adjacent lane is the opposite lane, maintain an estimation result until a cancellation condition is satisfied, and wherein the avoidance process, when the collision condition is satisfied, if the adjacent lane is estimated to be the opposite lane, executes the steering control without causing the own vehicle to enter the adjacent lane.