Out-of-Vehicle Notification Device for Autonomous Driving Safety
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Solution Overview
Problem
Existing out-of-vehicle notification devices do not consider the behavior of other vehicles when notifying pedestrians about the intentions of an automatically driven host vehicle, potentially leading to unsafe situations as pedestrians may not recognize approaching vehicles.
Innovation Solution
An out-of-vehicle notification device that includes a moving person detecting unit, an approaching vehicle detecting unit, and a notification control unit to adjust notifications based on the presence of other vehicles, providing vehicle stoppage information only when no approaching vehicles are detected and switching to traveling information when an approaching vehicle is detected, ensuring pedestrians are aware of the host vehicle's intentions in relation to their own actions and the surrounding traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the notification device notifies the pedestrian of the host vehicle's intention to make way, then the pedestrian can cross safely, but the pedestrian may not recognize approaching vehicles and enter the road unsafely
Solution Approach 1:
The notification device dynamically changes its behavior based on detected conditions. When an approaching vehicle is detected, the device switches from notifying the pedestrian to withhold notification, thereby adapting the notification strategy to current traffic conditions and preventing unsafe pedestrian actions
Solution Approach 2:
The notification device uses feedback from the approaching vehicle detecting unit to control its notification behavior. The detection result of approaching vehicles feeds back to the notification control unit, which adjusts whether to perform notification based on this feedback, creating a closed-loop safety system
2Loss of information
If the notification device always notifies pedestrians of host vehicle intentions, then pedestrians can understand host vehicle behavior, but pedestrians may ignore approaching vehicles and create unsafe situations
Solution Approach 1:
The notification device transitions from a static always-on notification mode to a dynamic conditional notification mode. The notification control unit adjusts the notification state based on real-time detection of approaching vehicles, ensuring information is provided only when safe to do so
Data Source
AI summary
An out-of-vehicle notification device notifies a moving person in a vicinity of a host vehicle of information related to a behavior of the host vehicle while the host vehicle is being automatically driven. The out-of-vehicle notification device includes a moving person detecting unit configured to detect the moving person who is to be notified, an approaching vehicle detecting unit configured to detect an approaching vehicle approaching the moving person to be notified, a notification unit configured to perform notification of information with respect to an outside of the host vehicle, and a notification control unit configured to cause the notification unit to perform notification of vehicle stoppage information, which indicates that the host vehicle will be decelerated, when the moving person to be notified is detected and a traveling plan is a traveling plan in which the host vehicle is decelerated.