Vehicle Road Image Display for Pedestrian Safety
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Solution Overview
Problem
Existing image display devices for vehicles fail to accurately assess the approach of surrounding vehicles and guide pedestrians safely, often leading to unnecessary no-crossing warnings or failure to recognize approaching vehicles.
Innovation Solution
An image display device equipped with a light illuminator, space detector, travel information acquirer, and possibility calculator that determines the travel possibility of surrounding vehicles and controls the display of 'no-crossing' or 'permission-to-cross' images based on calculated travel possibilities, ensuring pedestrians are warned only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light illuminator displays a no-crossing image to warn pedestrians of approaching vehicles, then pedestrian safety is improved, but unnecessary warnings cause pedestrian anxiety and reduce crossing efficiency
Solution Approach 1:
The system changes the parameter of image display based on calculated travel possibility. When travel possibility is high, a no-crossing image is displayed; when travel possibility is low, a permission-to-cross image is displayed. This dynamic parameter adjustment resolves the contradiction by providing accurate safety warnings only when necessary, avoiding unnecessary anxiety while maintaining safety.
2Measurement precision
If the space detector and possibility calculator accurately assess surrounding vehicle travel possibilities, then appropriate pedestrian guidance is achieved, but device complexity increases
Solution Approach 1:
The system segments the assessment function into distinct modules: space detector for detecting travel spaces, travel information acquirer for obtaining vehicle data, and possibility calculator for computing travel possibilities. This segmentation achieves accurate measurement while managing device complexity through functional modularity and clear separation of concerns.
3Measurement precision
If the system continuously monitors surrounding vehicles and calculates travel possibilities, then pedestrian guidance accuracy is improved, but energy consumption increases
Solution Approach 1:
The system performs periodic monitoring and calculation of travel possibilities rather than continuous operation. The possibility calculator computes travel possibilities at intervals based on detected travel spaces and acquired travel information, reducing energy consumption while maintaining sufficient guidance accuracy for pedestrian safety.
Data Source
AI summary
An image display device includes a light illuminator, a space detector, a travel information acquirer, a possibility calculator, and an illumination controller. The light illuminator is configured to send out light frontward of a first vehicle as an own vehicle, to display an image on a road a pedestrian is going to cross. The space detector is configured to detect a travel space sideward of the first vehicle. The possibility calculator is configured to calculate travel possibility that a second vehicle other than the first vehicle travels through the travel space, on the basis of travel information acquired by the travel information acquirer and on the basis of a position of the travel space detected by the space detector. The illumination controller is configured to control the light illuminator to display a no-crossing image on the condition that the travel possibility is equal to or larger than a predetermined value.