Diver Heads-Up Display Oxygen Partial Pressure Indication
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Solution Overview
Problem
Conventional rebreather heads-up displays are ineffective in communicating the partial pressure of oxygen in breathing gas to both color-sighted and color-blind users, as they rely primarily on color schemes that color-blind individuals cannot interpret.
Innovation Solution
A heads-up display system utilizing a combination of light-emitting diodes with specific flashing patterns and spatial configurations to indicate near hyperoxic and hypoxic conditions, allowing color-blind users to determine the partial pressure of oxygen based on positional cues rather than color alone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If color schemes are used to display partial pressure of oxygen information, then color-sighted users can effectively interpret the data, but color-blind users cannot access the information
Solution Approach 1:
The display is segmented into multiple independent indicia positioned at different locations (top, middle-top, middle-bottom, bottom). Each indicia can be independently activated to convey specific information about oxygen partial pressure levels, allowing color-blind users to interpret data through spatial position rather than color alone.
Solution Approach 2:
The invention adds a spatial dimension to the display by arranging indicia vertically at different positions. Color-blind users can determine oxygen levels by observing which positional indicia are illuminated, transforming a color-based one-dimensional display into a position-based multi-dimensional display that is accessible to all users.
2Adaptability or versatility
If multiple indicia with different functions are added to display both color-sighted and color-blind friendly information, then user compatibility improves, but device complexity increases
Solution Approach 1:
Each indicia in the display serves multiple functions: it can indicate specific oxygen partial pressure levels, serve as a positional reference for color-blind users, and contribute to the overall visual pattern that both color-sighted and color-blind users can interpret. This multi-functionality reduces the need for completely separate display systems.
Solution Approach 2:
The display uses four indicia of the same type (light-emitting elements) arranged in a consistent vertical pattern. This homogeneous structure simplifies the device design compared to using fundamentally different display technologies, while still providing the versatility needed for different user groups through systematic activation patterns.
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 effective communication of oxygen partial pressure information to both color-sighted and color-blind users through flashing patterns and spatial arrangements of light-emitting diodes, ensuring safety by alerting others to critical oxygen levels.
Implementation Method 1
A heads-up display having a display panel which displays information related to a partial pressure of oxygen in a breathing gas. The display panel comprises a first indicia, a second indicia, a third indicia, and a fourth indicia.
Data Source
AI summary
A heads-up display has a display panel which displays information related to a partial pressure of oxygen in a breathing gas. The display panel comprises a first indicia, a second indicia, a third indicia, and a fourth indicia. The first indicia and the fourth indicia respectively indicate a near hyperoxic condition and a near hypoxic condition. The second indicia and the third indicia together indicate the partial pressure of oxygen in the breathing gas.