Earth-Moving Machine HUD with Depth-Adjusted AR Overlay
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Solution Overview
Problem
Existing earth-moving machine user interfaces require operators to frequently switch focus between real-world targets and virtual data, leading to increased eye strain and reduced efficiency, especially in complex operations where better ergonomics and reduced workload are needed.
Innovation Solution
A head-up display system using a transparent combiner and projector to overlay augmented reality data at a visual depth from the display surface, allowing operators to maintain focus on their work while receiving essential information, with adjustable depth and stereoscopic effects to match the distance of monitored objects, and optionally wearable HMDs for portable use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional display interfaces are used, then operators can receive data information, but operators must frequently switch focus between real-world targets and virtual data, causing increased eye strain and reduced efficiency
Solution Approach 1:
The patent applies head-up display technology to project virtual earth-moving data into the operator's field of view at a visual depth distance, transforming the traditional 2D display plane into a 3D spatial arrangement. This allows operators to view both real-world targets and virtual data simultaneously without switching focus, as the data is presented in the operator's natural line of sight at an adjusted depth that reduces eye strain and maintains operational efficiency
2Productivity
If head-up display technology is used to overlay data in the operator's field of view, then operators can maintain focus on work while receiving information, but the data must be displayed at an optimized visual depth to prevent eye strain
Solution Approach 1:
The patent dynamically adjusts the visual depth parameter of the head-up display to optimize the viewing experience. By controlling the virtual image distance of the overlaid data, the system ensures that operators can maintain focus on their work while receiving information without excessive eye strain. The adjustment of visual depth parameters allows the data to be presented at an optimal distance that balances productivity enhancement with operator comfort and reduces harmful visual strain
3Ease of manufacture
If virtual images are displayed at a fixed depth, then implementation is simpler, but the stereoscopic effect may not adapt to varying distances of monitored objects
Solution Approach 1:
The patent implements a dynamic depth adjustment mechanism that adapts the visual depth of virtual earth-moving images based on the distance to monitored objects. When objects are close to the control cabin, the virtual depth is reduced; when objects are distant, the virtual depth increases. This dynamic adaptation maintains accurate depth perception and stereoscopic effects across varying operational conditions, enhancing the system's versatility while preserving ease of implementation through automated adjustment
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
This solution reduces operator workload and improves efficiency by providing essential data at a natural viewing angle, minimizing eye strain and allowing less experienced operators to handle tasks with greater ease, while maintaining focus on the operational target.
Implementation Method 1
a transparent display unit (6) serving as a head-up display through which an operator (5) may monitor operation of the tool (3)
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a user interface and an earth-moving machine. The user interface comprises displaying means (13) and a control unit (CU). The displaying means comprise a transparent display unit (6) for displaying virtual earth-moving images. The images are displayed at a virtual image distance from the displaying unit.