Lane Departure Warning Device Context-Aware Junction Suppression
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Solution Overview
Problem
Existing lane departure warning systems generate excessive warnings due to driver habits and lack of technology to limit warnings in special road environments like junctions and branch roads, leading to driver disturbance.
Innovation Solution
A lane departure warning device utilizing a camera and navigation map information to recognize lane lines, detect functional failures, and limit warnings at junctions, branch points, crossroads, tollgates, and crosswalks, as well as determining driver intentions through vehicle velocity, acceleration, and steering signals to prevent unnecessary alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lane departure warning is generated whenever the vehicle comes close to the lane, then the warning system provides comprehensive safety coverage, but it causes driver disturbance due to excessive warnings
Solution Approach 1:
The system applies different warning policies to different road environments. In special road environments (junctions, branch roads, narrow roads), the system suppresses warnings even when lane departure is detected, while in normal environments, it maintains comprehensive warning coverage. This localized adaptation resolves the contradiction by making the warning behavior context-dependent rather than uniform.
Solution Approach 2:
The system dynamically adjusts its warning behavior based on real-time road environment recognition. By continuously monitoring road type through image processing and navigation data, the system transitions between warning and non-warning states according to the current environment, thereby maintaining safety coverage where needed while avoiding disturbance in special conditions.
2Reliability
If the system uses camera and navigation map information to recognize road environments, then the reliability of warning limitation is improved, but the device complexity increases
Solution Approach 1:
The system merges camera-based road environment recognition with navigation map information to determine whether the vehicle is in a special road environment. By combining these two information sources, the system achieves reliable warning limitation without requiring a completely new complex system, as it integrates existing sensors and data sources.
Solution Approach 2:
The camera system serves multiple functions: it detects lane lines for basic lane departure warning, recognizes road environment types (junctions, branch roads, narrow roads), and provides input for navigation system integration. This multi-functionality reduces the need for separate dedicated systems, thereby limiting the increase in device complexity while maintaining high reliability.
3Object-affected harmful factors
If the system limits lane departure warning in special road environments, then driver disturbance is reduced, but the safety coverage may be compromised
Solution Approach 1:
The system segments the road environment into different types (normal roads vs. special road environments including junctions, branch roads, and narrow roads). By dividing the operating environment into distinct categories, the system can apply appropriate warning policies to each segment, ensuring safety coverage is maintained in normal segments while disturbance is reduced in special segments.
Solution Approach 2:
The system changes the warning parameter (warning activation state) based on the recognized road environment type. In special environments, the warning parameter is adjusted to suppress false alarms, while in normal environments, it maintains high sensitivity for safety. This parameter adaptation resolves the contradiction by making safety coverage and disturbance reduction context-dependent.
Data Source
AI summary
The present invention relates to a lane departure warning device or the like that limits a lane departure warning in a special road environment, in a case where it is confirmed that a driver has a lane departure intention, and so on. It is possible to secure the reliability of a lane departure warning system and to provide a driver's convenience by limiting the lane departure warning in the case where the vehicle enters into a special road region, such as a road junction/branch region by comprehensively considering information captured by a camera of the vehicle, navigation map information, and so on while using a general lane departure warning, and also limiting the lane departure warning even in the case where the driver's lane departure intention is confirmed.