Vehicle External Notification Device for Pedestrian Action Confirmation
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Solution Overview
Problem
During automatic driving, pedestrians are uncertain whether their actions are recognized by the host vehicle, leading to unease, as there is no effective means for the vehicle to notify them that their actions are acknowledged.
Innovation Solution
A vehicle external notification device that includes a detection unit to identify moving objects, a proposal action determination unit to suggest actions, a notification unit to communicate these actions, and a confirmation unit to ensure the action is recognized by the host vehicle, using visual and auditory signals to inform pedestrians of their proposed actions and confirmation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the host vehicle operates in automatic driving mode without notifying pedestrians, then the automation level is improved, but the pedestrian's sense of security and communication effectiveness deteriorates
Solution Approach 1:
The notification device provides feedback to pedestrians about the host vehicle's recognition of their presence and intended actions. The speaker outputs notifications such as 'Yes, I see you' or 'Please wait,' confirming to pedestrians that their actions are detected and understood by the automatic driving system, thereby maintaining their sense of security during automated operation.
Solution Approach 2:
The notification device acts as an intermediary communication channel between the automatic driving system and pedestrians. It translates the vehicle's internal recognition state into external audible messages that pedestrians can understand, enabling effective communication without human drivers.
2Loss of information
If the host vehicle provides continuous notification to pedestrians, then the communication effectiveness is improved, but the complexity of the notification system increases
Solution Approach 1:
The notification system dynamically adjusts its behavior based on the detected pedestrian actions and vehicle state. The controller selects different notification messages depending on whether the pedestrian is crossing, waiting, or detected in specific zones, providing context-appropriate communication without requiring a complex array of notification methods for every possible scenario.
Solution Approach 2:
The system changes notification parameters (message content, timing, and frequency) based on the situation. Rather than using a fixed complex notification system, it adapts simple notification outputs to different contexts, such as changing from 'Please wait' to 'Yes, I see you' based on pedestrian movement and vehicle response status.
Data Source
AI summary
The vehicle external notification device includes a notification unit that gives notice of the information to the outside of the vehicle, a proposal action determination unit that determines an action to be proposed to the pedestrian, a notification control unit that causes the notification unit to notify the pedestrian of information on the action to be proposed to the pedestrian, an action detection unit that detects an action of the pedestrian, and an action determination unit that determines whether or not the action of the pedestrian which is detected by the action detection unit is the action proposed to the pedestrian. The notification control unit causes the notification unit to notify the pedestrian of information indicating that the action of the pedestrian is the proposed action, when the action determination unit determines that the action of the pedestrian is the action proposed to the pedestrian.