Driver Glance Monitoring With Adaptive Alert Timing
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Solution Overview
Problem
Distracted driving poses a significant safety risk due to drivers being drawn away from the direction of travel by various distractions, leading to potential harm to themselves and others, and existing alert systems can frustrate drivers with frequent notifications.
Innovation Solution
A driver monitoring system using internal cameras and an electronic control unit to adjust allowable glance times based on driver input, environmental factors, and safety risk, initiating countermeasures to encourage safe driving behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed default glance time is used in all driving conditions, then the system is simple to operate, but drivers become frustrated in certain driving conditions due to frequent alerts
Solution Approach 1:
The patent implements a dynamic glance time threshold that automatically adjusts based on detected driving conditions. The system transitions from a static fixed-time alert approach to a dynamic adaptive approach where the allowable glance duration varies according to environmental factors such as traffic density, road type, and vehicle speed, thereby resolving the contradiction between operational simplicity and adaptability.
Solution Approach 2:
The system changes the temporal parameter of the glance threshold dynamically based on driving context. By modifying the allowable glance time parameter according to detected conditions (e.g., shorter thresholds in high-risk situations, longer thresholds in low-risk situations), the system achieves both ease of operation and adaptability to varying driving scenarios.
2Ease of operation
If the allowable glance time is increased to reduce alert frequency, then driver frustration decreases, but road safety is compromised due to prolonged distraction
Solution Approach 1:
The system dynamically adjusts the glance time threshold based on real-time driving condition assessment. In high-risk conditions (e.g., heavy traffic, complex intersections), the threshold is shortened to maintain safety. In low-risk conditions (e.g., open highways, light traffic), the threshold is extended to improve driver comfort. This dynamic adaptation resolves the contradiction between safety and comfort.
Solution Approach 2:
The patent implements context-dependent parameter modification where the allowable glance time parameter is changed based on the risk level of current driving conditions. The system evaluates multiple factors (traffic density, road geometry, weather) and adjusts the temporal parameter accordingly, achieving both safety maintenance and driver comfort improvement.
3Reliability
If frequent alerts are issued to correct driver distraction, then road safety is improved, but driver frustration and compliance issues increase
Solution Approach 1:
The system changes the alert frequency and timing parameters based on driving conditions and driver behavior patterns. By adjusting these parameters dynamically, the system issues alerts only when necessary (improving safety) while avoiding excessive notifications that would frustrate drivers (improving experience).
Solution Approach 2:
The patent implements a feedback mechanism where the system monitors driver responses to alerts and adjusts future alert behavior accordingly. This adaptive feedback loop allows the system to learn from driver reactions and optimize alert timing and frequency, thereby maintaining safety while improving driver acceptance and compliance.
Data Source
AI summary
Methods, systems, and apparatus for a driver monitoring system. The driver monitoring system includes an internal vehicle camera, an internal vehicle display, and an electronic control unit (ECU). When a driver enters the vehicle, a request (e.g., an agreement) can be displayed to the vehicle driver so as to prompt the vehicle driver to provide a driver input. In response to the vehicle driver providing the driver input, the ECU can adjust an allowable glance time. The ECU can be configured to determine, using the camera, that the eye position of the vehicle driver is such that a gaze direction of the vehicle driver is not toward a direction of travel of the vehicle for a duration that exceeds the adjusted glance time. In response thereto, the ECU can be configured to initiate a countermeasure to encourage a corrective response from the vehicle driver.