Driver Awareness Support Device Dynamic Voice Interaction
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Solution Overview
Problem
Existing drowsiness warning devices for drivers repeatedly output voice questions regardless of the driver's awareness level, leading to annoyance and inefficiency in timing adjustments.
Innovation Solution
An awareness support device that includes a detection unit to assess the driver's awareness level based on vehicle information, initiating and terminating interactive voice outputs when a reduction or recovery in awareness is detected, allowing for tailored interaction periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voice question data is repeatedly output at predetermined intervals, then the driver can be alerted when drowsy, but the driver feels annoyed and the timing cannot be adjusted to actual driver state
Solution Approach 1:
The system dynamically adjusts the voice output timing based on detected driver state changes. Instead of fixed predetermined intervals, the voice questions are output only when awareness level reduction is detected, and continued only while the drowsy state persists. This dynamic adaptation resolves the contradiction by making the system responsive to actual driver needs while maintaining comfort.
Solution Approach 2:
The system continuously monitors driver state through vehicle information and provides feedback by adjusting voice output timing. When awareness reduction is detected, the system feeds back by starting voice output, and when recovery is detected, it stops the output. This feedback mechanism ensures reliability while preventing driver annoyance through context-appropriate timing.
2Reliability
If interactive voice is output continuously to ensure driver alertness, then driver safety is improved, but driver annoyance increases
Solution Approach 1:
The system uses periodic monitoring of driver state through vehicle information and adjusts voice output accordingly. Voice questions are output periodically only during detected drowsy periods, not continuously. This periodic action based on actual need maintains safety while eliminating unnecessary annoyance from continuous output.
Solution Approach 2:
The voice output duration is dynamically adjusted based on the detected awareness state. The system starts voice output when drowsiness is detected and terminates it when recovery is detected, creating a dynamic on/off pattern rather than continuous output. This resolves the contradiction by providing safety-critical alerts only when needed.
3Device complexity
If voice output timing is fixed at predetermined intervals, then system complexity is reduced, but adaptability to driver state is poor
Solution Approach 1:
The system transitions from fixed predetermined intervals to dynamic timing based on detected awareness level changes. The interaction processing unit automatically adjusts voice output timing based on real-time driver state detection, providing adaptability without requiring complex manual configuration or multiple timing parameters.
Solution Approach 2:
The system self-adjusts its voice output timing based on its own detection of driver state. The interaction processing unit autonomously determines when to start and stop voice output based on awareness level detection results, eliminating the need for external configuration and providing adaptability while maintaining system simplicity.
Data Source
AI summary
An awareness support device includes: an awareness level reduction detection unit configured to detect a reduction in a driver's awareness level based on vehicle information on a vehicle driven by the driver; an awareness level recovery detection unit configured to detect a recovery from the reduction in the driver's awareness level based on the vehicle information; and an interaction processing unit configured to: start an output of an interactive voice used for interaction with the driver when the awareness level reduction detection unit detects the reduction in the driver's awareness level; and terminate the output of the interactive voice when the awareness level recovery detection unit detects the recovery from the reduction in the driver's awareness level.