Vehicle HUD Obstacle Virtual Image Display Adjustment
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Solution Overview
Problem
Existing head-up display (HUD) systems for vehicles fail to effectively notify drivers of obstacles by not providing a clear representation of obstacles, especially when multiple obstacles are present or when visibility is affected by external factors, and do not consider obstacles outside the driver's field of view.
Innovation Solution
An information display system that uses a projection unit, a mirror, and sensors to generate virtual images of obstacles based on risk levels, adjusting the display position and type (outline or frame) to ensure clear recognition, and includes a sound processing unit for warning sounds, with the ability to adjust brightness and display position to counteract external visibility factors and notify drivers of obstacles outside their field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the virtual image is displayed in the front shield or combiner along the front shield shape, then the driver can be notified of obstacles, but the visibility is easily influenced by external factors such as brightness
Solution Approach 1:
The patent applies local quality by displaying the virtual image at a specific location (upper portion of the front shield) rather than uniformly across the entire shield. This localized display approach allows the obstacle notification to be provided effectively while minimizing the impact of external brightness factors on overall visibility.
2Device complexity
If the virtual image does not have a form of the obstacle, then the display is simple, but the driver may not instantly recognize the obstacle
Solution Approach 1:
The patent uses color changes and visual characteristics (such as displaying the virtual image in red or other distinctive colors) to enhance obstacle recognition. By giving the virtual image specific visual properties that differ from the normal environment, the driver can instantly recognize obstacles without requiring complex detailed forms.
3Device complexity
If the virtual image is displayed only within the field of view over the front shield, then the display is straightforward, but obstacles outside the field of view that may influence the running vehicle cannot be notified
Solution Approach 1:
The patent extends the notification capability to obstacles outside the direct field of view by projecting virtual images of these obstacles onto the front shield within the driver's field of view. This dimensional transformation allows the system to notify drivers of obstacles that would otherwise be invisible, maintaining system simplicity while improving comprehensive obstacle detection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances driver safety by providing clear and timely recognition of obstacles without hindering driving, adjusting displays to maintain visibility, and notifying drivers of external obstacles through integrated audio and visual cues.
Implementation Method 1
a projection unit which projects a video on the screen
Implementation Method 2
a reflection plate (referred to as a combiner) of a half mirror provided in the front shield
Data Source
AI summary
There is provided an information display system for supporting a high safety driving, so that a driver can clearly recognize an obstacle. A shape of a virtual image indicating an outline or a frame line of the obstacle is changed according to a risk level of the obstacle against a vehicle, and a display position of the virtual image is adjusted according to a viewpoint position of the driver, so that a deviation in displaying between an actual obstacle and the virtual image is suppressed. In addition, there is provided an information display system which can make the driver intuitively recognize the obstacle without hindering the driving by displaying an estimated traffic line of the obstacle as the virtual image.