Lane Keeping Control Device Branch Road Turn Signal Guidance

Solution Overview

Problem

Lane keeping control systems often suspend operation when encountering a branch road, reducing opportunities for lane keeping assistance, which is not preferable.

Innovation Solution

A lane keeping control device that continues to guide the vehicle toward a branch road when a turn signal indicating the direction of the branch road is activated, while prioritizing safety by avoiding opposing lanes and obstacles, and adjusting control based on turn signal direction and lane change intentions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If lane keeping control is suspended when a branch road is detected, then safety is improved by avoiding unintended control during lane changes, but opportunities to carry out lane keeping control are reduced

Engineering Contradiction:

ImprovesafetyVSAvoidopportunities to carry out lane keeping control

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system performs preliminary detection of turn signal activation before the vehicle actually enters the branch road. By detecting the turn signal in advance, the system can determine the driver's intention beforehand and appropriately adjust the lane keeping control - suspending it when a turn is intended and maintaining it when no turn is intended, thus preventing unintended control while preserving useful control opportunities

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from the turn signal activation detector to dynamically adjust the lane keeping control behavior. The turn signal status provides continuous feedback about driver intention, allowing the control system to adapt its behavior in real-time - suspending control when turn signal is active and maintaining control when it is inactive, thereby resolving the contradiction between safety and control opportunities

Inventive Principle:

Principle #23Feedback

2Productivity

If lane keeping control is continued toward a branch road, then opportunities to carry out lane keeping control are increased, but unintended control during lane changes may occur

Engineering Contradiction:

Improveopportunities to carry out lane keeping controlVSAvoidunintended lane keeping control

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system performs preliminary detection of turn signal activation before the vehicle actually enters the branch road. By detecting the turn signal in advance, the system can determine the driver's intention beforehand and appropriately adjust the lane keeping control - suspending it when a turn is intended and maintaining it when no turn is intended, thus preventing unintended control while preserving useful control opportunities

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from the turn signal activation detector to dynamically adjust the lane keeping control behavior. The turn signal status provides continuous feedback about driver intention, allowing the control system to adapt its behavior in real-time - suspending control when turn signal is active and maintaining control when it is inactive, thereby resolving the contradiction between safety and control opportunities

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS10814908B2Lane keeping control device

Publication Date: 2020.10.27 MAZDA MOTOR CORP

AI summary

A lane keeping control device performs lane keeping control to allow a host vehicle (V) to travel in a travel lane (21) in which the host vehicle is currently traveling. The lane keeping control device continues to perform the lane keeping control such that the host vehicle travels toward a branch road (30) ahead, when the branch road (30) has been detected, and a turn signal (WL) has been activated to indicate a direction toward the branch road (30).