Head-Mounted Display System for Aircraft Cockpit Orientation Tracking
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Solution Overview
Problem
Current head-up display (HUD) systems in aircraft cockpits are costly and complex to install, and information is not visible when pilots need to monitor lateral environments, as the display is fixed and not adaptable to head orientation.
Innovation Solution
A head-mounted display (HMD) system with a sensor to detect the pilot's head orientation and a display computer that adjusts the display mode based on angular offsets, ensuring information is displayed in a conforming manner with the aircraft's environment, switching between modes to maintain visibility when the pilot turns their head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional HUD device is installed, then piloting assistance information can be displayed in a conforming manner, but the device becomes costly and complex to install
Solution Approach 1:
The patent replaces the complex mechanical HUD projection system with an electronic display device mounted on the pilot's head. The display computer processes orientation data from sensors and dynamically adjusts display content and positioning, substituting mechanical optical components with electronic control systems that achieve the same piloting assistance function with reduced installation complexity.
Solution Approach 2:
The patent creates a virtual copy of the external environment and piloting information displayed on the HMD device's transparent display. This virtual representation is generated by the display computer based on sensor data, allowing the pilot to see conforming display information without requiring physical alignment of optical components as in traditional HUD systems.
2Reliability
If the display is fixed in position, then information can be displayed in a conforming manner, but the information becomes invisible when the pilot turns their head
Solution Approach 1:
The patent implements a dynamic display system where the display computer continuously receives orientation data from sensors and adjusts the display content and positioning in real-time. This dynamic adaptation allows the display to maintain conforming accuracy relative to the external environment while remaining visible to the pilot regardless of head orientation, as the display information moves accordingly with the pilot's head movements.
Solution Approach 2:
The patent employs feedback through sensors that detect head orientation and provide this data to the display computer. The display computer processes this feedback information and adjusts the display output accordingly, creating a closed-loop system that maintains both conforming display accuracy and visibility adaptability based on the pilot's actual head position and orientation.
3Adaptability or versatility
If the display adapts to head orientation, then information remains visible when turning head, but the display may lose conforming accuracy
Solution Approach 1:
The patent uses sensor feedback to continuously monitor head orientation and provides this information to the display computer. The display computer processes this feedback and dynamically adjusts the display content positioning and orientation, maintaining conforming accuracy even as the display adapts to different head orientations. The feedback loop ensures that adaptability does not compromise accuracy.
Solution Approach 2:
The patent implements dynamic control where the display system continuously adjusts its output based on real-time orientation data. This dynamic adaptation allows the system to maintain conforming display accuracy across various head orientations by continuously recalculating and repositioning display elements relative to the external environment as perceived by the pilot.
Data Source
AI summary
A display system for an aircraft cockpit comprises a display device configured to be secured to a user's head, a sensor to determine an orientation of the user's head, and a display computer. The computer is configured to control the display of information relating to the flight of the aircraft on the display device, to acquire information on the user's head orientation, to determine an angular offset value between a direction corresponding to the head orientation and a longitudinal axis of the aircraft, to evaluate at least one condition as a function of the angular offset value, and to control the display device display in accordance with a first display mode when the condition is verified, this first display mode corresponding to a display comprising at least one aircraft piloting assistance symbol displayed in a conforming manner, and another display mode when the condition is not verified.