Diver Safety Device for Real-Time Bubble Detection
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Solution Overview
Problem
Current scuba diving decompression algorithms fail to account for individual diver susceptibility and physical condition, leading to uncertainties and increased risk of gas bubble-related disorders during ascent.
Innovation Solution
A device that detects excessive gas desaturation and warns the diver, allowing for personalized decompression adjustments, including intermediate stops, and integrates with existing dive computers to provide real-time alerts and modulate decompression stop durations based on bubble flow measurements and ambient pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional dive computer with fixed decompression tables is used, then the device complexity is low and ease of operation is high, but the reliability is reduced due to inability to account for individual diver susceptibility
Solution Approach 1:
The patent implements a feedback mechanism where bubble detection signals from the diver's blood are continuously monitored and fed back to the decompression control system. This allows the system to adjust decompression parameters in real-time based on actual bubble formation, improving reliability while maintaining manageable complexity through automated feedback loops
Solution Approach 2:
The system performs self-adjustment by automatically modifying decompression schedules based on detected bubble levels without requiring manual intervention. The decompression computer autonomously recalculates safe ascent profiles by integrating bubble detection data with decompression algorithms, enabling the system to serve itself in adapting to individual diver conditions
2Reliability
If fixed decompression tables are used without personalization, then the ease of operation is high, but the reliability decreases due to individual susceptibility variations
Solution Approach 1:
The system automatically adapts decompression schedules to individual diver characteristics by monitoring bubble formation and autonomously adjusting parameters. This self-service capability eliminates the need for manual personalization while maintaining high reliability, preserving ease of operation through automated adaptation rather than manual configuration
3Reliability
If real-time bubble detection and warning systems are implemented, then the reliability improves through personalized monitoring, but the device complexity increases
Solution Approach 1:
The patent merges the bubble detection function with the existing decompression computer by integrating a blood sampling system that interfaces directly with the decompression algorithm. This combining of functions reduces overall system complexity compared to separate systems, as the decompression computer already performs calculations and can directly incorporate bubble data into its control logic
Solution Approach 2:
The system uses feedback from bubble detection to automatically adjust decompression parameters through integrated control algorithms. The decompression computer receives real-time bubble formation data and automatically modifies ascent profiles, creating a closed-loop system that improves reliability while managing complexity through automated feedback control rather than manual intervention
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
Reduces the risk of gas bubble-related disorders by providing timely warnings and personalized decompression profiles, adapting to the diver's physical condition and reducing the likelihood of reaching unsafe ascent gradients.
Implementation Method 1
a Doppler probe 2 in the form of a portable device worn by the diver and arranged to provide a Doppler signal whose level varies as a function of the gas bubble flow level in the diver's blood
Implementation Method 2
a alarm means 15 arranged to receive the Doppler signal 3 and to provide an alarm signal when the level of the Doppler signal 3 exceeds a threshold value memorized by the high threshold value memory 14
Implementation Method 3
If this ascent is too rapid, the desaturation of the gas dissolved in the tissues causes the formation of bubbles
Data Source
Figure 1
Figure 2
AI summary
The safety device for underwater diving comprises a sensor (2) for measuring a flow of gas bubbles comprising a belt (2A) for fixing and functional coupling to the body of a diver, the flow sensor (2) being linked to a portable computer (1) for utilizing signals from the flow sensor (2) so as to provide an alarm signal if the measured flow level exceeds a predetermined safety threshold and to thus customize a table of decompression stops.