Vehicle HUD Image Position Correction Under Speed-Dependent Motion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display systems for vehicles, such as head-up displays (HUDs), face challenges in accurately correcting image position displacement due to vehicle movements, leading to noticeable corrections and reduced appearance quality.
Innovation Solution
A display system that includes an acquisition device for speed information, a detection device for posture variations, and a correction processing device that adjusts the display position based on a reference position and correction amount, with thresholds set according to vehicle speed to minimize position displacement and reset corrections effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If correction amount is continuously adjusted based on posture variation, then position displacement suppression is improved, but appearance quality deteriorates due to noticeable corrections
Solution Approach 1:
The system changes the parameter of correction amount based on vehicle speed. At low speeds, correction is applied to suppress position displacement. At high speeds, correction is suppressed to avoid noticeable adjustments. This dynamic parameter change resolves the contradiction by adapting the correction strategy to operating conditions.
Solution Approach 2:
The correction processing device dynamically adjusts whether to apply correction based on real-time speed information. The system transitions from continuous correction at low speeds to correction suppression at high speeds, making the correction process adaptive rather than static, thereby improving appearance quality while maintaining position accuracy when needed.
2Measurement precision
If correction is applied to suppress position displacement, then positioning accuracy is improved, but error accumulation from sensor noise worsens
Solution Approach 1:
The system changes the correction application parameter based on speed thresholds. By suppressing correction at high speeds where sensor noise impact is greater, the system reduces error accumulation while maintaining positioning accuracy at low speeds where correction is more effective and reliable.
3Stability of the object's composition
If correction amount is increased to maintain image position, then position stability is improved, but visibility of correction process worsens
Solution Approach 1:
The system dynamically changes the correction amount parameter based on speed. At high speeds, correction amount is reduced or suppressed to make the correction process invisible to occupants. At low speeds, correction is applied to maintain position stability when it is most needed and least noticeable.
Data Source
Figure 1
Figure 2
Figure 3~4A
AI summary
The display system (100) includes an acquisition device (20) that acquires speed information indicating a speed of a moving body, a detection device (40) that detects a posture variation amount of the moving body, a display processing device (30) that controls a display position of an image based on a reference position and a correction amount, and a correction processing device (50) that sets the correction amount based on the speed and the posture variation amount. The correction processing device (50) estimates whether or not the correction amount becomes equal to or more than a predetermined amount based on the speed and the posture variation amount, and adjusts the correction amount based on the estimation result.