Vehicle Trace Control for Unclear Lanes and Parallel Traffic
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Solution Overview
Problem
Existing vehicle control devices struggle to maintain safety when the host vehicle is controlled based on the trajectory of a preceding vehicle, especially in situations where lane markings are unclear or absent, leading to potential collisions with adjacent vehicles.
Innovation Solution
A vehicle control device equipped with in-vehicle sensors and a processor that executes first trace control to recognize and follow the host vehicle's lane, and second trace control to follow a preceding vehicle's trajectory, but only if no adjacent vehicles are detected, thereby preventing collisions with parallel-traveling vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the host vehicle is controlled to move along the trajectory of a preceding vehicle when the traveling lane cannot be recognized, then the host vehicle can follow the preceding vehicle through intersections or areas with blurred lane markings, but the host vehicle may come close to or come into contact with another vehicle traveling side by side
Solution Approach 1:
The control system dynamically switches between different control modes (first trace control for lane following, second trace control for preceding vehicle following) based on the recognizability of lane markings. When lane markings are clear, the system uses lane-based control; when lane markings are blurred or absent, it transitions to preceding vehicle trajectory following, creating a dynamic adaptation to environmental conditions
Solution Approach 2:
The processor acts as an intermediary that mediates between the preceding vehicle trajectory data and the host vehicle control system. It introduces a safety verification step by checking for the presence of parallel-traveling vehicles before allowing second trace control to execute, preventing direct collision risks while maintaining the beneficial trajectory-following functionality
2Ease of operation
If the host vehicle follows the preceding vehicle's trajectory by changing lateral position, then the host vehicle can maintain following distance, but the host vehicle may enter an adjacent traveling lane and come into contact with parallel-traveling vehicles
Solution Approach 1:
The system performs preliminary detection of parallel-traveling vehicles in adjacent lanes before executing the second trace control that would change the host vehicle's lateral position. By detecting potential hazards in advance and preventing the trajectory-following action when parallel vehicles are present, the system applies preliminary anti-action to avoid collisions before they can occur
Solution Approach 2:
The control system continuously monitors the positions of surrounding vehicles and provides feedback to the processor. This feedback loop allows the system to adjust its behavior in real-time, preventing lateral position changes that would bring the host vehicle too close to or into contact with parallel-traveling vehicles while maintaining safe following distances
Data Source
AI summary
The vehicle control device is capable of executing a first trace process of recognizing a traveling lane on which the host vehicle is traveling and controlling the host vehicle so that the host vehicle travels along the traveling lane on the basis of the information acquired from the in-vehicle sensor, and controlling the host vehicle so that the host vehicle travels along the trajectory of the preceding vehicle when there is a preceding vehicle traveling in front of the host vehicle in a situation where the traveling lane cannot be recognized while executing the first trace process. The vehicle control device does not execute the second trace control when there is a possibility that there is another vehicle running in parallel with the host vehicle.