LED Arrays on Spacesuit Helmet Face Shield for Heads-Up Display
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Solution Overview
Problem
Conventional spacesuits rely on single-line LCDs or paper notebooks for information, which are not directly in the astronaut's field of view and require manual scrolling, making it difficult to access critical mission data quickly and efficiently.
Innovation Solution
A helmet assembly with integrated LED arrays on the external face shield that provide a heads-up display of vital information such as position, consumables, and suit status through adjustable illumination, color, and grouping of LED units, allowing for non-alphanumeric, easily perceptible data presentation within the user's field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional single-line LCD or paper notebook is used for information display, then the device complexity is reduced, but the information accessibility and user awareness are worsened due to requiring manual scrolling and being outside the field of view
Solution Approach 1:
The patent transitions from a single-line linear display to a multi-dimensional LED matrix display embedded in the helmet's field of view. This allows information to be presented in a two-dimensional grid format that can be scanned visually without manual intervention, fundamentally changing how information is accessed from sequential to parallel viewing.
Solution Approach 2:
The patent introduces an intermediary processing system that automatically manages the LED matrix display, translating complex data into intuitive visual patterns. This intermediary layer handles the complexity of information organization and presentation, allowing the astronaut to access information easily without directly managing the complex display system.
2Loss of information
If LED arrays are integrated into the helmet face shield, then the information presentation capability is improved, but the device complexity increases due to additional components and integration requirements
Solution Approach 1:
The patent merges the display system with the helmet's existing structure by embedding LED arrays within the face shield assembly. This integration combines multiple functions (protection, vision, and information display) into a single unified structure, reducing the need for separate components and simplifying the overall system.
Solution Approach 2:
The helmet assembly is designed with multi-functionality, where the face shield serves both its traditional protective and visual functions while simultaneously acting as the substrate for the LED information display. This universal design allows one component to fulfill multiple roles, reducing overall system complexity.
3Speed
If non-alphanumeric LED display format is used, then the information perception speed is improved, but the information density and precision are worsened compared to alphanumeric displays
Solution Approach 1:
The patent segments information into distinct visual categories using different LED patterns, colors, and positions within the matrix. Critical alerts use distinctive patterns (e.g., flashing or specific color combinations), while routine information uses standard patterns. This segmentation allows rapid visual processing while maintaining information distinction and precision.
Solution Approach 2:
Different regions of the LED matrix are assigned different functions and visual characteristics. Certain areas may display critical alerts with higher visibility (using brighter colors or flashing patterns), while other areas display routine information with simpler patterns. This local differentiation optimizes both perception speed and information precision by matching display characteristics to information priority.
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
Enables astronauts to receive critical mission-critical information in a simplified, non-intrusive manner, minimizing distraction and enhancing situational awareness without obstructing their view, by using LED arrays to convey vital data through brightening, dimming, flashing, or color-changing LED units.
Implementation Method 1
information cueing via light-emitting diode (LED) arrays
Implementation Method 2
Each array of LED units conveys information (e.g., position, consumable level, pressure status) in a non-alphanumeric format perceptible by the user by adjusting the illumination of one or more LED units within the array
Data Source
AI summary
A helmet assembly for a spacesuit or other protective suit is disclosed. In embodiments, the helmet assembly includes an external face shield attachable to the spacesuit and providing the spacesuit user with a forward field of view. The helmet assembly includes suit status displays hard-mounted to the external face shield at a periphery or edge of the forward field of view (e.g., upper, lower, left, right). Each suit status display includes a linear or one-dimensional array of individual light emitting diodes (LED) in communication with a suit controller of the spacesuit. Each LED array receives from the suit controller suit status data (e.g., consumables levels, suit performance, position data) communicated to the user by illuminating one or more of the individual LED units.