Driver Mobile-Use Warning Based on Gaze, Motion, and Screen State
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Solution Overview
Problem
Existing vehicle warning systems uniformly restrict the use of mobile devices while driving, preventing even safe functions like navigation, which can lead to a lack of user-friendliness and safety concerns as they do not differentiate between allowed and forbidden functions.
Innovation Solution
A vehicle warning apparatus that acquires line-of-sight, movement, and screen information to determine the state of the driver and mobile device usage, adjusting the warning level based on the function in use, allowing safe functions like navigation during driving while restricting other functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uniform restriction on mobile device use is applied while driving, then safety is improved, but user-friendliness deteriorates due to lack of differentiation between allowed and forbidden functions
Solution Approach 1:
The system applies different warning levels to different mobile device functions based on their safety impact. Allowed functions (navigation, music) receive no warning or reduced warning, while forbidden functions (messaging, social media) trigger strong warnings. This local differentiation resolves the contradiction by maintaining safety for critical functions while preserving user-friendliness for safe functions.
Solution Approach 2:
The system changes the warning parameter dynamically based on the detected function type. Instead of a binary warning approach, it implements a multi-level warning system where the warning intensity varies according to the function being used. This parameter adjustment allows the system to maintain high safety standards for forbidden functions while providing a more user-friendly experience for allowed functions.
2Reliability
If strict warning is given for all mobile device operations, then safety is improved, but adaptability deteriorates as safe functions like navigation are unnecessarily restricted
Solution Approach 1:
The system implements function-specific warning policies where each mobile device function is evaluated individually. Navigation and music playback are classified as allowed functions with minimal or no warnings, while messaging and social media are classified as forbidden functions with strong warnings. This local quality approach maintains safety while preserving adaptability for safe functions.
Solution Approach 2:
The warning system dynamically adjusts its behavior based on the real-time detection of mobile device function usage. The system continuously monitors what function is being used and adapts the warning level accordingly, rather than applying a static restriction policy. This dynamic approach allows safe functions to proceed uninterrupted while blocking harmful functions.
3Measurement precision
If multiple parameters (line-of-sight, movement, screen information) are monitored, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system merges multiple detection functions into a single integrated warning apparatus. The line-of-sight detection unit, movement detection unit, and screen information detection unit work together as a unified system, sharing processing resources and coordination logic. This merging approach achieves high measurement precision through multi-parameter monitoring while controlling device complexity through integrated architecture.
Solution Approach 2:
The warning determination unit serves multiple functions simultaneously: it processes line-of-sight data, movement data, and screen information data to comprehensively determine driver state and mobile device usage. This multi-functional design achieves high detection precision without proportionally increasing system complexity, as a single processing unit handles all detection tasks.
Data Source
AI summary
A vehicle warning apparatus includes a line-of-sight information acquisition unit, a movement information acquisition unit, a screen information acquisition unit, a warning level determination unit, and a warning unit. The warning level determination unit determines a state of the driver and a state of use of the mobile device by the driver based on line-of-sight information including a direction of a line of sight of a driver, movement information indicating a movement of a particular part of the driver, and screen information indicating a state of a screen of the mobile device, and determines a warning level based on a result of the determination. The warning unit gives a warning based on the warning level that is stronger as the warning level is higher. The warning level determination unit decreases the warning level when a function of the mobile device in use is an allowed function.