Vehicle Projection Surface Selection via Mobile Device Triangulation
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Solution Overview
Problem
Current technologies lack a simple and reliable method for determining a projection surface for projection devices in motor vehicles, particularly when the user is outside the vehicle.
Innovation Solution
A method involving a mobile terminal device to detect and record the projection surface, determining relative positions using triangulation, and controlling the projection device based on these positions to project data onto the selected surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a projection device is used to project data onto a surface, then information can be provided to the driver, but the system cannot determine or select a projection surface when the user is outside the vehicle
Solution Approach 1:
A mobile terminal device serves as an intermediary between the user and the projection system. The mobile terminal captures images of the projection surface and transmits this information to the projection device, enabling the system to identify and adapt to the selected surface without requiring the user to be inside the vehicle or manually configure complex parameters.
2Measurement precision
If the projection system uses complex detection and calculation methods to determine surface position and orientation, then accurate projection can be achieved, but the system complexity increases
Solution Approach 1:
The mobile terminal device creates a visual copy or representation of the projection surface by capturing an image. This image copy contains all the necessary geometric information about the surface's position, orientation, and shape, allowing the projection system to determine surface parameters through image processing rather than complex physical measurements and calculations.
Data Source
Figure 1~2
AI summary
The invention relates to a method for determining a projection surface (4) for a projection device (3) of a motor vehicle (1) comprising the steps of: detecting a mobile device (7) in the vicinity (5) of the motor vehicle (1), determining a relative position between the mobile device (7) and a reference point (11) of the motor vehicle (1) with a detection device (8) of the motor vehicle (1), detecting the projection surface (4) in the vicinity (5) of the motor vehicle (1) with the mobile device (7), determining a relative position between at least one point (13, 13') of the projection surface (4) and the mobile device (7), and determining a relative position between the projection surface (4) and the reference point (11) of the motor vehicle (1) based on the relative position between the mobile device (7) and the reference point (11) and the relative position between the at least one point (13, 13') of the projection surface (4) and the mobile device (7).and projecting the projection data onto the projection surface (4) using the projection device (3) depending on the relative position between the projection surface (4) and the reference point (11) of the motor vehicle (1).