Driving Support Device Gaze Deviation Alerting
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Solution Overview
Problem
Existing driving support systems fail to effectively evaluate and alert drivers when the direction of their gaze deviates from the intended direction based on changing driving situations, such as during turns or parking, leading to potential distractions and safety risks.
Innovation Solution
A driving support device equipped with a face direction determinator, line-of-sight direction determinator, and alert processing unit that uses inward and outward facing cameras to assess the difference between the driver's face and line of sight direction, alerting the driver when the deviation exceeds a threshold and suppressing alerts in appropriate driving scenarios like backing up or low-speed maneuvers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driver's line of sight is strictly monitored to ensure attention, then driving safety is improved, but false alerts occur during normal driving maneuvers like turning or parking
Solution Approach 1:
The system dynamically adjusts the expected line-of-sight direction based on the vehicle's steering angle and driving situation. Instead of using a fixed forward direction, the monitoring standard adapts to match the driver's natural gaze direction during maneuvers, allowing the system to distinguish between intentional gaze shifts and actual distraction.
Solution Approach 2:
The system changes the reference parameter for line-of-sight evaluation from a fixed forward direction to a dynamic direction calculated from steering angle and vehicle state. This parameter transformation enables the system to accommodate normal driving variations while maintaining safety monitoring effectiveness.
2Reliability
If the monitoring system alerts the driver for any line of sight deviation, then attention is maintained, but driver convenience and natural driving behavior are reduced
Solution Approach 1:
The system applies different monitoring strictness to different driving situations. During normal straight-line driving, the monitoring is strict with the line of sight expected to be forward. During turning or parking maneuvers, the system locally adjusts the expected direction to match the steering angle, allowing more natural gaze patterns.
Solution Approach 2:
The monitoring criteria dynamically adapt to the current driving context by incorporating steering angle and vehicle state information. This allows the system to be strict when needed and permissive during normal maneuvers, maintaining both safety and driver convenience.
3Device complexity
If simple line of sight monitoring is used, then system complexity is low, but the system cannot distinguish between dangerous distraction and normal driving behavior
Solution Approach 1:
The system uses a multi-functional approach by combining data from multiple sensors (steering angle sensor, imaging device) to create a comprehensive evaluation model. This universal framework handles both simple forward-gaze monitoring and complex maneuver-specific monitoring within a single system architecture.
Solution Approach 2:
The system introduces an intermediary calculation layer that processes steering angle and vehicle state data to determine the expected line-of-sight direction. This intermediary computation bridges the simple imaging device input and the nuanced evaluation output, enabling accurate distinction between distraction and normal behavior without requiring complex hardware.
Data Source
AI summary
A direction in which a driver is looking can be evaluated even when the direction in which the driver should look has changed depending on the driving situation. A driving support device includes a face direction determinator that determines the direction of the face of a driver of a movable body, a line-of-sight direction determinator that determines the direction of the line of sight of the driver, and an alert processing unit that determines at least one of the necessity and an extent of alerting the driver on the basis of an extent of the difference between the direction of the face and the direction of the line of sight.