Mask Breathing-State Detection Using Adaptive Pressure Estimation
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Solution Overview
Problem
Existing mask technologies struggle with accurately determining breathing states due to the need for extensive data accumulation and averaging, which leads to delayed fan control, inconsistency in breathing cycle recognition, and errors in inhalation and exhalation detection, especially under environmental pressure changes.
Innovation Solution
A mask apparatus utilizing an internal pressure sensor to quickly determine breathing states by comparing current pressure values with atmospheric pressure estimates, enabling rapid fan control and accurate inhalation/exhalation detection, independent of external environmental changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If average pressure value is calculated using 2-3 breathing cycles, then measurement accuracy is improved, but response time deteriorates
Solution Approach 1:
The system performs preliminary action by estimating atmospheric pressure in advance and using it as a reference for breathing detection. Instead of waiting to accumulate 2-3 breathing cycles to calculate average pressure, the system pre-establishes a pressure reference baseline that enables immediate breathing state determination from the first pressure measurement, eliminating the data accumulation delay
Solution Approach 2:
The patent introduces atmospheric pressure estimation as an intermediary reference value that mediates between the pressure sensor readings and breathing state determination. This intermediary atmospheric pressure value serves as a stable baseline against which current pressure variations are compared, enabling accurate breathing detection without requiring extensive data accumulation
2Adaptability or versatility
If atmospheric pressure changes occur during data accumulation, then environmental adaptability is improved, but measurement accuracy deteriorates
Solution Approach 1:
The system applies dynamics by continuously updating the atmospheric pressure estimation based on current pressure sensor readings rather than using a fixed pre-calculated average. The atmospheric pressure reference value dynamically adapts to environmental changes while maintaining its utility as a breathing detection baseline, allowing the system to respond to environmental pressure variations without compromising measurement accuracy
Solution Approach 2:
The patent implements feedback by continuously comparing current pressure readings against the atmospheric pressure estimation and using this information to determine breathing states. The system receives feedback from pressure sensor readings and adjusts its breathing state determination in real-time, enabling accurate detection even when environmental pressure conditions change during operation
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 solution allows for precise breathing state recognition without extensive data accumulation, ensuring timely and consistent fan operation, thereby enhancing user comfort and effectiveness in various environments.
Implementation Method 1
measuring a current pressure value of a mask
Data Source
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AI summary
Provided is a mask apparatus. The mask apparatus includes a mask body in which a fan module is provided, a face guard coupled to a rear surface of the rear body so as to be in close contact with user's face and having a breathing space therein, a pressure sensor installed in the mask body to measure a pressure of the breathing space, and a controller configured to compare a current pressure value measured by the pressure sensor to a preset atmospheric pressure estimation, update the atmospheric pressure estimation based on a difference between the current pressure value and the atmospheric pressure estimation, and control a rotation speed of the fan module based on a difference between the updated atmospheric pressure estimation and the current pressure value.