AR Pedestrian Alerts Using V2P Collision Risk Detection
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Solution Overview
Problem
Existing pedestrian safety systems fail to accurately detect dangerous situations and provide timely alerts due to limitations in object recognition and alert delivery, particularly when pedestrians use mobile devices while walking.
Innovation Solution
A pedestrian device equipped with vehicle-to-pedestrian communication capabilities and an AR display that determines collision risks based on information from in-vehicle devices, using field-of-view and line-of-sight cameras to provide alerts through virtual objects overlaid on the real environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If object recognition based on camera images is used to detect dangerous situations, then the system can provide alert functionality, but the detection accuracy is insufficient to properly identify collision risks
Solution Approach 1:
The patent introduces a pedestrian terminal as an intermediary device that directly communicates with the vehicle terminal via vehicle-to-pedestrian communication. This intermediary enables more accurate detection of collision risks by establishing a direct communication channel between the pedestrian and vehicle, bypassing the limitations of camera-based object recognition and achieving reliable safety confirmation.
2Loss of time
If traditional alert methods are used to notify pedestrians of dangerous situations, then alerts can be provided, but the alerts are not effective or timely enough to prevent accidents
Solution Approach 1:
The pedestrian terminal receives information from the vehicle terminal about potential collision risks before the actual dangerous situation occurs. By performing preliminary detection and notification through direct vehicle-to-pedestrian communication, the system provides timely alerts that enable pedestrians to take preventive actions before accidents happen.
3Ease of operation
If AR display technology is used to overlay virtual objects on real space, then critical safety information can be conveyed intuitively, but the system complexity increases
Solution Approach 1:
The AR display functions as an intermediary interface between the pedestrian terminal and the pedestrian user. It overlays virtual objects containing critical safety information directly onto the pedestrian's field of view, providing intuitive information conveyance. While this adds device complexity, it significantly improves ease of operation by making safety information immediately visible and understandable without requiring the pedestrian to shift attention to separate displays.
Data Source
AI summary
The present invention relates to a pedestrian device and a traffic safety assistance method which can effectively and properly support pedestrian's safety confirmation by utilizing vehicle-to-pedestrian communications and an AR device. A pedestrian device of the present invention includes: an ITS communication device 21 (pedestrian-vehicle communication device) configured to perform vehicle-to-pedestrian communications with an in-vehicle terminal 2; a processor 32 configured to determine if there is a risk of collision based on information transmitted to and received from the in-vehicle device, and control provision of an alert to a user of the pedestrian device; and an AR display 26 for displaying a virtual object overlaid on a real space which can be seen by the user, wherein the processor controls display of the virtual object (virtual terminal) on the AR display as an alert operation to provide an alert to the user.