Driver Gaze Determination During Lane-Change Mirror Checks
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Solution Overview
Problem
Existing act-of-looking-aside determination devices erroneously determine a driver as being in an inattentive state when their line of sight is directed to the rearview or side mirrors during vehicle route changes, such as lane changes, leading to incorrect assessments of driving attention.
Innovation Solution
An act-of-looking-aside determination device that includes a line-of-sight direction detector, an act-of-looking-aside determiner, a route change detector, a surrounding vehicle detector, and a vehicle state acquirer, which refrains from determining an act-of-looking-aside state when the driver's line of sight is directed to rearview or side mirrors during route changes, especially when the distance between vehicles exceeds or falls below a predetermined threshold, and adjusts determinations based on road shape and vehicle steering states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the act-of-looking-aside determination device determines that the driver is in an act-of-looking-aside state when the line-of-sight direction deviates from the determination reference range, then the measurement precision of the act-of-looking-aside state is improved, but erroneous determinations occur when the driver checks mirrors during route changes
Solution Approach 1:
The system dynamically changes the determination reference range based on vehicle state parameters. When a route change is detected (lane change, turn, etc.), the reference range is adjusted to accommodate normal mirror-checking behaviors. This allows the system to maintain high measurement precision for detecting actual inattentive states while avoiding erroneous determinations during legitimate driving maneuvers.
Solution Approach 2:
The route change detection function acts as an intermediary between the line-of-sight detection and the act-of-looking-aside determination. It provides contextual information about vehicle maneuvers that helps distinguish between intentional mirror checks (during route changes) and actual inattentive states, thereby improving determination reliability.
2Device complexity
If the determination reference range is fixed, then the device complexity is reduced, but the adaptability to different driving scenarios (such as route changes) deteriorates
Solution Approach 1:
The determination reference range transitions from a static fixed value to a dynamic adjustable parameter. The system automatically adjusts the reference range based on detected route changes, enabling adaptability to different driving scenarios without requiring complex manual configuration or multiple predetermined ranges for every possible situation.
Solution Approach 2:
The system performs preliminary detection of route changes (lane changes, turns) before they affect the line-of-sight determination. By detecting the vehicle state change in advance, the system can proactively adjust the determination reference range to prevent erroneous act-of-looking-aside determinations during mirror checks.
Data Source
AI summary
In an act-of-looking-aside determination device, when a route change detector detects a route change of an own vehicle, an act-of-looking-aside determiner refrains from determining that a driver is in an act-of-looking-aside state even when a line-of-sight direction of the driver deviates from a determination reference range after the line-of-sight direction of the driver detected by a line-of-sight direction detector is detected as a line-of-sight direction toward at least one of a rearview mirror R and a side mirror determined based on a relative position between the own vehicle and another vehicle, the rearview mirror and the side mirror being provided in the own vehicle. Thus, even when the line of sight of the driver is turned to the rearview mirror or the side mirror during a route change of the own vehicle, an erroneous determination on an act-of-looking-aside state can be prevented.