Vehicle HUD Marker Angle Control for Distance Perception
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Solution Overview
Problem
Existing vehicle display technologies fail to provide a proportional sense of distance between the vehicle and other objects, leading to driver difficulty in estimating distances accurately, as the size of tracking marks in head-up displays does not correspond to actual distances.
Innovation Solution
A display control device that adjusts the apparent angle and size of markers relative to the road surface based on the distance between the vehicle and targets, ensuring markers are superimposed on targets as viewed by the driver, with the angle changing continuously and size varying with distance to enhance visibility and perception of relative speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the tracking mark size is made smaller as distance decreases and larger as distance increases, then the marker remains visible on the display, but the driver cannot accurately estimate the actual distance between vehicles
Solution Approach 1:
The patent changes the apparent angle parameter of the marker relative to the road surface based on distance. Specifically, it sets a smaller apparent angle when the target is farther away and a larger apparent angle when the target is closer, creating a proportional relationship between apparent angle and distance that helps drivers estimate actual distances accurately while maintaining marker visibility.
2Area of stationary object
If the marker size is adjusted inversely with distance, then the marker remains visible on the head-up display, but the driver loses proportional sense of distance
Solution Approach 1:
Instead of adjusting only the size of the marker, the patent introduces a new dimension - the apparent angle of the marker relative to the road surface. By controlling this angular parameter to be proportional to distance, the system preserves distance information that would otherwise be lost in size-only adjustments.
3Measurement precision
If the apparent angle of the marker is set proportional to distance, then the driver can easily estimate distance, but the marker may become less visible at certain distances
Solution Approach 1:
The system dynamically adjusts the apparent angle parameter based on detected distance, creating a proportional relationship that improves distance estimation. The control device sets smaller apparent angles for farther targets and larger apparent angles for closer targets, maintaining both visibility and measurement precision.
Data Source
AI summary
A display control device for a vehicle that is configured to: detect a target ahead of a vehicle; set an apparent angle of a marker relative to a reference plane in accordance with a distance between the target and the vehicle, the reference plane being related to a road surface on which the vehicle is traveling; and display the marker so as to be superimposed on the target as viewed by a driver of the vehicle.