Vehicle Projection Control Using Head-Tracked Display Positioning
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Solution Overview
Problem
Existing technologies for projecting information from a mobile vehicle, such as bicycles or scooters, onto the road surface face difficulties in being readable from a distance and in crowded environments, as the information is often projected directly onto the road surface rather than in a direction that is easily visible to nearby pedestrians or other users.
Innovation Solution
A vehicle projection control device that includes an occupant detection unit, a traveling information acquisition unit, a projection control unit, and a head detection unit, which projects traveling information in the direction corresponding to the occupant's body, allowing for more effective notification of the vehicle's status to nearby individuals, even in crowded areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If information is projected onto the road surface, then the information can be displayed, but it becomes difficult to check from a distance or in crowded environments
Solution Approach 1:
The patent transitions from projecting information onto the two-dimensional road surface to projecting onto the three-dimensional space in front of the rider's face, specifically on the rider's retina. This dimensional change allows information to be viewed from any distance while maintaining clarity, as it is projected directly into the rider's visual field rather than requiring external observation of a road surface projection.
2Device complexity
If information is projected onto the road surface, then the projection system can be simple, but the information cannot be effectively communicated to third parties in crowded areas
Solution Approach 1:
The patent introduces the rider's retina as an intermediary medium between the projection system and the information display. By projecting onto the rider's retina rather than directly onto the road surface, the system creates a personal display that is visible to the rider while potentially visible to third parties when the rider looks in their direction, thus improving communication effectiveness without significantly increasing system complexity.
Data Source
AI summary
A vehicle projection control device includes: an occupant detection unit configured to detect an occupant on a vehicle; a traveling information acquisition unit configured to acquire traveling information of the vehicle and information indicating that the vehicle is traveling; a projection control unit configured to, when the occupant detection unit has detected the occupant and the traveling information acquisition unit has acquired the information indicating that the vehicle is traveling, cause a projection unit to project the acquired traveling information, the projection unit being configured to project a video in a direction corresponding to a body of the occupant on the vehicle; and a head detection unit configured to detect a head of the occupant on the vehicle in a projection direction of the projection unit. The projection control unit is configured to change a projection location of the acquired traveling information based on a location of the detected head.