Vehicle Notification Device Restricting Output for Preceding Vehicles
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Solution Overview
Problem
In traffic situations where multiple vehicles are aligned, such as in congestion, existing vehicle notification systems may overwhelm pedestrians with unnecessary information, causing them discomfort.
Innovation Solution
A vehicle outside notification device that determines the necessity of notifications based on the surrounding environment and the presence of preceding vehicles, restricting notifications when a preceding vehicle is present and only outputting them when the inter-vehicle distance is greater than the distance to the pedestrian, thus minimizing information overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If notifications are output to all vehicles regardless of surrounding conditions, then traffic participants receive complete information about vehicle actions, but traffic participants feel troublesome due to information overload in congestion
Solution Approach 1:
The notification system applies different notification strategies to different local situations: when a preceding vehicle is detected, notifications are restricted; when no preceding vehicle is present, full notifications are output. This localized adaptation resolves the contradiction by tailoring information delivery to specific spatial contexts.
Solution Approach 2:
The notification system dynamically adjusts its behavior based on real-time detection of preceding vehicles. The notification control unit changes the notification output state (restrict or allow) according to the dynamic traffic environment, resolving the contradiction between providing complete information and avoiding overload.
2Object-affected harmful factors
If notifications are restricted when preceding vehicles are present, then information overload is reduced for pedestrians, but pedestrians attempting to pass between vehicles may not receive necessary safety information
Solution Approach 1:
The system changes the notification parameter (output restriction) based on the detected parameter (presence of preceding vehicle). When the inter-vehicle distance is smaller than the distance to the pedestrian, notifications are restricted to avoid overload. This parameter-based control resolves the contradiction by adaptively adjusting notification behavior.
3Measurement precision
If the notification system continuously monitors surrounding environment and vehicle state, then notification necessity is accurately determined, but device complexity increases
Solution Approach 1:
The notification necessity determination unit performs preliminary assessment of the surrounding environment and vehicle state before triggering notifications. This preliminary action filters out unnecessary notifications early in the decision process, achieving accurate notification necessity determination without requiring complex real-time analysis of all parameters.
Data Source
AI summary
Provided is a vehicle outside notification device including a notification necessity determination unit configured to determine whether or not it is necessary to provide a traffic participant in a vicinity of a host vehicle with notification regarding an action schedule of the host vehicle, a preceding vehicle determination unit configured to determine whether or not a preceding vehicle is present in a case where it is determined that it is necessary to provide the notification, a notification output unit configured to output the notification, and a notification control unit configured to control the notification output unit. The notification control unit outputs the notification in a case where the preceding vehicle determination unit determines that the preceding vehicle is not present. The notification control unit restricts the output of the notification in a case where the preceding vehicle determination unit determines that the preceding vehicle is present.