Capacitive Pressure Sensor Array Rapid Data Collection
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Solution Overview
Problem
Current pressure sensing systems face challenges in obtaining accurate and timely data, which can lead to delayed alerts in preventing pressure wounds, and existing solutions are either costly or labor-intensive, lacking in durability and effectiveness for real-time scenarios.
Innovation Solution
A pressure sensing system that measures capacitances using an array of capacitors with alternating voltage and current measurements, combined with mathematical modeling to predict terminal values and optimize signal amplification, allowing for rapid and reliable data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If standard pressure sensors are used, then the system is cost-effective and durable, but the measurement time is excessive due to slow stabilization
Solution Approach 1:
The system performs preliminary measurements at multiple time points (t1, t2, t3) before the sensor has fully stabilized. By taking measurements during the stabilization process and using mathematical prediction to estimate the terminal value, the system obtains accurate pressure readings without waiting for complete stabilization, thus reducing measurement time while maintaining reliability
Solution Approach 2:
The patent replaces the mechanical waiting process (physically waiting for sensor stabilization) with a mathematical computation system. By using mathematical models and prediction algorithms to calculate the terminal value from intermediate measurements, the system substitutes the time-consuming physical stabilization process with faster computational analysis
2Loss of time
If costly quick-response materials or technologies are used, then the measurement time is reduced, but the cost increases and durability decreases
Solution Approach 1:
Instead of using expensive quick-response sensor materials, the system creates a mathematical copy or model of the sensor's stabilization behavior. By modeling the terminal value based on intermediate measurements and using this mathematical representation to predict the final reading, the system achieves fast measurements with inexpensive, durable sensors
Solution Approach 2:
The system changes the approach from modifying physical sensor parameters (using expensive materials) to changing measurement parameters (taking multiple measurements at different time points and using mathematical prediction). This allows achieving fast response times while maintaining the use of cost-effective, durable standard sensors
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 rapid and accurate measurement of pressure distribution, providing timely alerts and reducing the risk of pressure wounds while being cost-effective and durable, suitable for real-time monitoring.
Implementation Method 1
a pressure sensing system which comprises a sensing-mat including a plurality of sensors configured to detect pressure
Implementation Method 2
an array of capacitors each formed at the intersection of a column and a row, and wherein the columns and rows are respectively disposed on opposite sides of a sheet of a compressible dielectric
Data Source
AI summary
A system and method for the management of data collection from a pressure sensing apparatus. The system allows rapid measurement of pressure exerted upon a surface and may be useful in preventing bed sore development in a bed bound subject.