Vehicle Voice Notification Control for Driver Annoyance Relief
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Solution Overview
Problem
In automated driving systems, excessive attention-seeking notifications from display and voice output devices can annoy drivers, making it difficult to continue automated driving control.
Innovation Solution
A display and voice output control system that performs a two-step judgment to determine if notification conditions are met, switching the output status to an inactive state when relaxation conditions are satisfied, minimizing unnecessary notifications and reducing driver annoyance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If attention-seeking notifications are frequently output to ensure driver safety during automated driving, then driver awareness is improved, but driver annoyance increases
Solution Approach 1:
The system dynamically changes the notification output parameters by switching between active and inactive states based on driver status. When the driver is determined to be in a relaxed state (eyes closed or head tilted), notification output is suppressed. When the driver is in an alert state, notification output is activated. This parameter change resolves the contradiction by adapting notification frequency to actual driver needs.
Solution Approach 2:
The system implements feedback by continuously monitoring driver status through cameras and sensors, then adjusting notification output accordingly. The notification control device receives driver status information and uses this feedback to determine whether to output notifications, creating a closed-loop control system that balances safety and driver comfort.
2Reliability
If notification output is continuously active to maintain driver attention, then safety monitoring is improved, but driver disturbance increases
Solution Approach 1:
The notification output status is made dynamic rather than static. The system transitions between active and inactive states based on real-time driver status evaluation. This dynamic approach allows the system to maintain safety monitoring capability while reducing driver disturbance during periods when notifications are not needed.
Solution Approach 2:
The system applies partial action by selectively outputting notifications only when the driver status indicates a need for attention. Instead of continuous notification output, the system uses conditional output based on driver state, achieving sufficient safety monitoring with reduced overall notification frequency.
3Reliability
If multiple display devices and voice output devices are used to ensure notification delivery, then notification reliability is improved, but system complexity increases
Solution Approach 1:
The notification control device consolidates control of multiple display devices and voice output devices into a single control unit. This merging approach maintains the ability to notify through multiple channels while simplifying the control architecture, as one controller manages all notification outputs based on unified driver status assessment.
Data Source
AI summary
A display and voice output control system of a vehicle on which automated driving is performed includes a display device, a voice output device and a controller. The controller controls a notification of a recommended behavior by the display device and the voice output device. In the notification control, it is judged whether or not a notification condition of the recommended behavior is satisfied. If it is judged that the notification condition is satisfied, it is judged whether a notification relaxation condition of the recommended behavior is satisfied based on a status of a driver and a driving status of the vehicle. If it is judged that the notification relaxation conditions is satisfied, relaxation notification processing is executed. Otherwise, normal notification processing is executed. In the relaxation notification processing, an output status of the recommended behavior in the voice output device is controlled to an inactive state.