Lane Centering Safe-Zone Control for Discreet Departure Correction
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Solution Overview
Problem
Existing lane keeping systems in vehicles often notify drivers audibly, embarrassing them and providing insufficient time for correction, and may not function effectively when the driver intends to change lanes, leading to unnecessary interventions.
Innovation Solution
A lane keeping system that sets a safe zone for driving, adjusts its width based on the driver's performance, and provides discrete haptic feedback to the driver, while continuing to monitor lane departure risks even when the turn signal is activated, and includes a lane centering system for autonomous steering within the lane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audible warnings are used to notify the driver of lane departure, then the driver is alerted of the lane departure, but passengers are also notified causing embarrassment to the driver
Solution Approach 1:
The notification system provides different types of feedback to different users. Haptic feedback through the steering wheel provides private tactile notification to the driver only, while avoiding public audible warnings that would notify passengers. This localized quality of notification resolves the contradiction by maintaining effectiveness while eliminating the harmful social embarrassment factor.
Solution Approach 2:
The haptic feedback system acts as an intermediary between the lane departure detection and the driver notification. Instead of directly using audible warnings that affect all occupants, the system uses tactile feedback through the steering wheel as an intermediate medium to communicate lane departure information privately to the driver.
2Measurement precision
If the system notifies the driver only when the vehicle has already left the lane, then the notification is triggered by actual lane departure, but the driver has insufficient time to correct the vehicle path
Solution Approach 1:
The system performs preliminary action by notifying the driver before actual lane departure occurs. By using haptic feedback to warn the driver of impending lane departure, the system provides advance warning that allows the driver to correct their path before crossing the lane delimiter, thus preventing the lane departure rather than merely detecting it after the fact.
Solution Approach 2:
The system implements continuous feedback by monitoring vehicle position relative to lane delimiters and providing real-time haptic feedback to the driver. This feedback loop allows the driver to make progressive corrections to maintain proper lane positioning, rather than receiving a single delayed notification after lane departure has occurred.
3Reliability
If the system applies steering correction to keep the vehicle in the lane, then lane departure is prevented, but the driver's intentional lane change is blocked
Solution Approach 1:
The system dynamically adjusts its behavior based on detected driver intent. When intentional lane change is detected through turn signal activation, the system temporarily suspends corrective actions on that side. This dynamic adaptation allows the system to maintain lane keeping effectiveness during normal operation while accommodating driver-initiated lane changes, thus resolving the contradiction between reliability and adaptability.
Solution Approach 2:
The system provides self-service by automatically detecting driver intent through turn signal activation and autonomously adjusting its control strategy. Rather than requiring the driver to manually disable the system for lane changes, the system serves itself by interpreting driver actions and adapting its behavior accordingly, maintaining both lane keeping reliability and driver intent recognition.
Data Source
AI summary
A vehicular lane centering system is enabled responsive to speed of the vehicle exceeding a threshold speed and includes a camera and a processor. Based on processing of captured image data, the system determines position of a left lane delimiter and a right lane delimiter on the road. The system establishes a left safe zone delimiter based on the determined position of the left lane delimiter and a right safe zone delimiter based on the determined position of the right lane delimiter. With the system enabled, the system takes corrective action responsive to the vehicular lane centering system determining that the vehicle is at risk of unintentionally crossing the left safe zone delimiter or the right safe zone delimiter. When the system does not determine position of the left lane delimiter or the right lane delimiter for a first period of time, corrective action taken by the system is reduced.