Vehicle Head-Up Display Positioning for Curved Road Readability
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Solution Overview
Problem
Existing head-up displays in vehicles often project virtual images that can be disruptive and difficult to understand due to discrepancies between the display position and the driver's natural line of sight, especially when driving through curves or corners, leading to distraction and reduced safety.
Innovation Solution
A method that dynamically adjusts the display range between maximum values based on vehicle speed and steering angle, ensuring the virtual image remains within the driver's field of view and aligns with the road direction, minimizing oscillating effects and improving readability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the virtual image is projected at a fixed position in front of the vehicle, then the display structure is simple, but the display becomes disruptive and difficult to understand when driving through curves or corners
Solution Approach 1:
The patent implements dynamic adjustment of the virtual image display position based on steering angle and vehicle speed. The display position is no longer fixed but adapts in real-time to driving conditions, resolving the contradiction between simple structure and readable display during maneuvers.
Solution Approach 2:
The patent changes the spatial parameters of the virtual image display based on steering angle and vehicle speed. By adjusting the display position parameters dynamically, the system maintains readability during curves and corners without requiring complex mechanical reconfiguration.
2Ease of operation
If the display position is adjusted to follow the driver's line of sight during curves, then the display readability improves, but the display may move outside the driver's field of view
Solution Approach 1:
The patent dynamically adjusts the display position parameters based on steering angle and vehicle speed, but within constrained boundaries. This ensures the virtual image remains aligned with the driver's natural line of sight while preventing it from moving outside the visible field of view.
Solution Approach 2:
The system uses feedback from steering angle sensors and speed sensors to continuously adjust the display position. This closed-loop control ensures the virtual image stays within the driver's field of view while maintaining alignment with the road direction.
3Reliability
If the display is kept stationary relative to the vehicle, then the display system is simple, but the driver must constantly shift attention between the display and the road
Solution Approach 1:
The patent makes the display position dynamic rather than stationary, adjusting it based on steering angle and vehicle speed. This allows the virtual image to remain naturally positioned in the driver's field of view during maneuvers, eliminating the need for constant attention shifts while avoiding overly complex mechanical systems.
Data Source
AI summary
A method is provided for visualizing optical information in the central field of vision of a driver in such a way that a display (5) in the form of a virtual image is superimposed on a real traffic environment. A position of the display (5) is dynamically variable as a function of a vehicle speed, a steering angle, and a road type. Thus a horizontal and/or vertical spread of a display range (8) between a first maximum value (9) and a second maximum value (10) within which the display (5) can be displayed is varied as a function of speed, steering angle and roadway type.