Air Cushion Immersion Sensing for Precise Pressure Adjustment
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Solution Overview
Problem
Current methods for determining optimal immersion depth in air cell cushions are subjective and inconsistent, relying on manual checks that can vary with user size and weight, leading to inadequate weight distribution and pressure sore prevention.
Innovation Solution
A sensor attached to the air cell cushion that detects optimal immersion by measuring air pressure changes, using a microprocessor and pressure transducer to calculate and display the necessary air adjustments, along with a novel reduced out-flow valve to control air release and prevent overshooting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual hand check method is used to determine immersion depth, then the method is simple and easy to operate, but the measurement is subjective and inconsistent
Solution Approach 1:
The patent replaces the manual mechanical hand-check method with an electronic pressure sensing system. A pressure transducer connected to the air cell cushion measures internal pressure changes objectively, eliminating subjective human judgment while maintaining operational simplicity through automatic detection and display of immersion status.
2Productivity
If air is released quickly from the cushion, then the setup time is reduced, but the optimal immersion depth is difficult to control and may be overshot
Solution Approach 1:
The patent implements a feedback control system where the pressure transducer continuously monitors internal cushion pressure and provides real-time feedback to the user via display indicators. This allows rapid air release while maintaining precise control, as the feedback signal guides the user to stop air release at the optimal immersion point, preventing overshooting.
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
The sensor provides objective and consistent detection of optimal immersion depth, ensuring proper weight distribution and reducing the risk of pressure sores across various users and cushion sizes, while the reduced out-flow valve helps maintain optimal pressure without over-deflating the cushion.
Implementation Method 1
The immersion depth of a user positioned on the cushion is determined by sensing air pressure in the cushion
Data Source
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Figure 4A
AI summary
A sensor for attachment to an inflatable air cell cushion designed to detect optimal immersion of the cushion user into the in the inflatable cushion. The immersion depth of a user positioned on the cushion is determined by sensing air pressure in the cushion. The sensor accurately reads changes in pressure as air exits the cushion to allow an algorithm to determine optimal internal cushion pressure for a user.