Dynamic Head-Up Display Calibration for Driver Adaptation
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Solution Overview
Problem
Traditional head-up displays in vehicles are calibrated based on typical driver dimensions and cannot dynamically adjust to accommodate drivers of varying physical features during operation, leading to potential image distortion due to the curvilinear windshield geometry and changing driver positions.
Innovation Solution
A head-up display system with a position sensor and controller that dynamically updates the projected image based on the occupant's position, using algorithms to adjust the image's location, focus, and content to minimize distortion and ensure optimal visibility, regardless of the driver's physical characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the head-up display is calibrated based on typical driver dimensions during manufacturing, then the initial installation alignment is achieved, but the display cannot accommodate drivers of varying physical features during operation
Solution Approach 1:
The patent implements dynamic calibration by continuously adjusting the projected image parameters (position, size, shape) based on real-time detection of the driver's eye position and head movements. This transforms the static, fixed calibration into a dynamic system that automatically adapts to different drivers without requiring manual intervention or complex mechanical adjustments.
Solution Approach 2:
The system changes multiple parameters of the projected image simultaneously including position coordinates, magnification scale, and geometric distortion correction factors. These parameter adjustments are calculated based on the detected driver position and applied in real-time to maintain optimal display quality for any driver configuration.
2Manufacturing precision
If the projection is fixed during manufacturing calibration, then the assembly process is simple, but image distortion occurs when the driver position changes
Solution Approach 1:
The system employs continuous feedback from position sensors that detect the driver's eye position and head orientation. This feedback information is processed to calculate the appropriate image transformation parameters, which are then applied to correct distortion and reposition the display content to match the driver's current viewing angle and position.
Solution Approach 2:
The manufacturing calibration establishes preliminary baseline parameters for the projection system. These pre-set parameters serve as the starting point for subsequent real-time adjustments, allowing the system to quickly adapt to different drivers while building upon the initial factory calibration rather than starting from scratch each time.
3Ease of manufacture
If the display is optimized for a typical driver, then the design process is straightforward, but the image does not remain clear and undistorted for drivers with different physical features
Solution Approach 1:
The patent creates a universal calibration system that can serve all driver types through a single integrated solution. The system combines factory pre-calibration with real-time adaptive adjustment capabilities, allowing one display system to universally accommodate drivers of various sizes, positions, and viewing angles without requiring driver-specific hardware configurations or complex manual calibration procedures.
Data Source
AI summary
A head-up display system includes a display unit including a projection unit configured to be positioned adjacent to a windshield, a display screen, and a controller. The projection unit is operable to project a current image generated by the controller onto a display screen. A position sensor is electrically coupled to the display unit and is operable to detect a position of an object with respect to the display unit. The controller is configured to dynamically update the current image based upon the position. A method of detecting an object is also disclosed.