Lane-Keeping Control Under Cut-In Lane Detection Interference
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Solution Overview
Problem
Conventional vehicle travel control systems face challenges in maintaining accurate lane recognition and stable self-driving operations when a preceding vehicle cuts in or changes lanes, leading to decreased recognition accuracy of lane division lines by the vehicle-mounted camera, which can cause vehicle instability and frequent mode switching from self-drive to manual drive.
Innovation Solution
A vehicle travel control apparatus equipped with a camera for capturing lane division line images and a preceding vehicle detector to assess movement, which adjusts the reliability of lane position information and controls the actuator based on camera image validity, switching to map-based data when interference occurs, ensuring continuous stable self-driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the vehicle travel control system relies on camera-based lane division line detection, then the system can achieve automatic lane keeping control, but the recognition accuracy deteriorates when a preceding vehicle changes lanes or cuts in
Solution Approach 1:
The patent introduces a reliability assessment mechanism as an intermediary between the camera-based lane detection system and the control actuator. This intermediary evaluates whether the detected lane division line is valid by checking if it intersects with the preceding vehicle's projected path, and adjusts the control strategy accordingly by switching between camera-based and map-based lane position information.
2Device complexity
If the system continues to use camera-based lane detection when a preceding vehicle intersects the division line, then the system structure remains simple, but vehicle stability deteriorates due to inaccurate lane recognition
Solution Approach 1:
The patent implements a dynamic control strategy where the system adapts its lane detection method based on real-time conditions. When the reliability assessment determines that the camera-based lane division line detection is invalid (i.e., when the preceding vehicle intersects the division line), the system dynamically switches to using map-based lane position information, thereby maintaining vehicle stability without requiring complex additional hardware.
3Adaptability or versatility
If the system switches between self-drive and manual drive modes frequently due to lane recognition issues, then the camera-based detection can be used more freely, but the driving experience deteriorates and operational reliability decreases
Solution Approach 1:
The patent applies preliminary action by assessing the reliability of camera-based lane detection before actually using it for control. The system proactively checks whether the detected lane division line will be affected by the preceding vehicle's movement, and preemptively switches to map-based information when interference is detected, thereby preventing potential control instability and avoiding frequent mode switching.
Data Source
AI summary
A vehicle travel control apparatus configured to control a traveling operation of a vehicle including an actuator for traveling, including a first sensor mounted on the vehicle to capture an image of a division line in a traveling direction of the vehicle or measure the division line, a second sensor mounted on the vehicle to detect a movement of a preceding vehicle, and an electronic control unit including a microprocessor and a memory connected to the microprocessor. The microprocessor is configured to perform controlling the actuator based on a position information of the division line obtained by the first sensor and a reliability with respect to the position information of the division line obtained by the first sensor, and the controlling including decreasing the reliability when a predetermined movement of the preceding vehicle to intersect the division line is detected by the second sensor.