Vehicle Audio Notification System for Self-Driving Status Awareness
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Solution Overview
Problem
Occupants in self-driving vehicles may not notice the driving status due to facing away from the display unit, leading to a lack of effective notification regarding the vehicle's operation.
Innovation Solution
A vehicle notification system that provides audio notifications of the driving status at predetermined intervals, including alerts for changes in route or schedule, and determines the occupant's wakefulness level to avoid disturbing them while sleeping, allowing the occupant to remain informed without needing to look at a display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If audio notification is provided during self-driving, then the occupant can ascertain driving status without visual attention, but the system complexity increases
Solution Approach 1:
The patent replaces the traditional visual display mechanism with an audio notification system. The notification output unit generates audio signals that convey driving status information, substituting the mechanical/visual interaction (display screen + visual attention) with an acoustic field-based communication method. This allows occupants to receive information without visual attention while maintaining system functionality.
2Loss of information
If notification is provided at regular intervals, then the occupant can ascertain driving status, but frequent notifications may disturb the occupant during sleep
Solution Approach 1:
The patent incorporates an occupant state detection mechanism that continuously monitors whether the occupant is sleeping or awake. The notification control unit uses this feedback information to dynamically adjust the notification strategy: providing regular audio notifications when the occupant is awake, and suspending notifications when the occupant is detected to be sleeping. This feedback loop enables the system to adapt to the occupant's state and avoid unnecessary disturbance.
3Object-affected harmful factors
If the system monitors occupant wakefulness level, then notifications can be adjusted to avoid disturbance, but the device complexity increases
Solution Approach 1:
The patent introduces an occupant state detection unit as an intermediary component between the notification system and the occupant. This unit acts as a mediator that senses the occupant's wakefulness state and transmits this information to the notification control unit. By placing this intermediary layer, the system can indirectly monitor the occupant's state without requiring complex direct interaction or invasive monitoring methods, thus balancing functionality with acceptable complexity.
Data Source
AI summary
A vehicle notification system performs audio notification regarding a driving status of a vehicle that is capable of self-driving, for an occupant of the vehicle at a predetermined timing during self-driving. The vehicle notification system includes a position identification section that is configured to identify a current position of the vehicle. Based on a destination and the current position, notification that the driving status is conforming to a plan is performed at regular intervals, and notification that the driving status is not conforming to the plan is performed if the driving status is no longer conforming to the plan.