Lane-Change Warning Logic for Turn Signal False Alert Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vehicle warning systems can generate annoying warnings when a driver is not intending to change lanes, despite the presence of monitoring target objects, due to the continuous blinking of turn signals during lane changes.
Innovation Solution
A vehicle warning device that includes sensors, cameras, and a control unit to determine if a warning is necessary by assessing turn signal information and image data, specifically considering conditions such as lane change completion and proximity to adjacent lanes, to prevent unnecessary warnings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If warning is generated whenever turn signal is blinking and monitoring target object is present, then safety is improved, but driver annoyance increases due to unnecessary warnings after lane change completion
Solution Approach 1:
The warning generation condition is made dynamic by continuously monitoring lane change status. The system transitions from a static warning condition (turn signal blinking + object present) to a dynamic condition that adapts based on whether lane change is in progress or completed, using camera-based lane position detection to adjust warning behavior in real-time
Solution Approach 2:
The system uses camera feedback to detect lane position and provide continuous information about lane change progress. This feedback loop allows the control unit to distinguish between active lane change and completed lane change states, enabling intelligent suppression of warnings after lane change completion while maintaining safety during the maneuver
2Loss of information
If turn signal continues to blink after lane change completion, then lane change indication is maintained, but false warning conditions are triggered
Solution Approach 1:
The camera system acts as an intermediary between the turn signal state and the warning generation logic. Instead of directly using turn signal status to trigger warnings, the system uses camera-based lane position detection as an intermediate verification step to confirm whether the vehicle is actually still changing lanes or has completed the maneuver
Solution Approach 2:
The system dynamically evaluates warning conditions based on real-time lane position data. The warning generation logic transitions from relying solely on turn signal state to a dynamic assessment that combines turn signal status with camera-based lane position detection, allowing the system to adapt to the actual lane change progress
Data Source
AI summary
A vehicle warning device causes a buzzer to generate a warning sound and vibrates a steering wheel using a steering vibration actuator when a monitoring target object for a right monitor range is present with a right turn signal changed from off to on, that is, generates a warning. The vehicle warning device does not generate the warning even though the monitoring target object for the right monitor range is present when any of cases where a lane change by one lane from an original lane to a first right adjacent lane is completed during an on state of the right turn signal, a distance between a right side surface of the host vehicle and a right lane marking of the first right adjacent lane is a threshold distance or less, and a time to enter a second right adjacent lane is a threshold time or less does not occur.