Metabolic Rate Meter Using Representative Breathing Profiles
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Solution Overview
Problem
Current methods for determining respiratory parameters and metabolic properties are inefficient and time-consuming, particularly in assessing the effects of events on metabolic states, as they require lengthy steady-state breathing measurements and are not suitable for real-time feedback.
Innovation Solution
A method and apparatus that utilize a representative inhale-exhale cycle breathing volume profile to determine metabolic properties by measuring oxygen consumption or carbon dioxide production during inhale-exhale cycles that meet a correspondence criterion, allowing for real-time feedback and rapid assessment of metabolic states, using sensors and processing units in devices like smartphones or cloud platforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If steady-state breathing measurements are used to determine metabolic properties, then measurement accuracy is improved, but measurement time and complexity increase significantly
Solution Approach 1:
The system performs preliminary calibration to establish a subject-specific representative breathing profile before actual measurement. This pre-established profile enables subsequent rapid comparisons during event monitoring, eliminating the need for repeated steady-state measurements while maintaining accuracy through personalized baseline data.
Solution Approach 2:
Instead of requiring complete steady-state breathing measurements for every assessment, the system uses partial breathing cycle data that meets correspondence criteria. By accepting sufficient but not excessive measurement data, the system achieves adequate measurement precision without the time cost of full steady-state protocols.
2Measurement precision
If steady-state breathing measurements are used to determine metabolic properties, then measurement accuracy is improved, but device complexity and operational difficulty increase
Solution Approach 1:
The system transitions from static steady-state measurement protocols to dynamic real-time breathing pattern analysis. By continuously monitoring breathing cycles against a representative profile and applying correspondence criteria, the system adapts to varying breathing conditions while maintaining measurement accuracy, significantly simplifying operational procedures.
Solution Approach 2:
The system creates a simplified digital representation (representative breathing profile) of the subject's normal breathing pattern. This copied profile serves as a reference template that enables rapid comparison and assessment without requiring complex steady-state measurement protocols, reducing both device and operational complexity.
3Productivity
If real-time feedback is provided during breathing measurements, then user engagement and data quality improve, but processing requirements and system complexity increase
Solution Approach 1:
The system provides real-time feedback by comparing current breathing cycles against the representative profile and notifying users when correspondence criteria are met or not met. This feedback mechanism improves measurement efficiency by guiding users to maintain appropriate breathing patterns while using simple comparison logic that minimizes processing complexity.
Solution Approach 2:
The measurement process is segmented into discrete breathing cycle evaluations, each independently assessed against the representative profile. This segmentation allows for simple, incremental processing of individual breaths rather than requiring complex real-time analysis of continuous breathing data, reducing system complexity while maintaining productivity.
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 efficient and rapid determination of metabolic properties and effects of events on subjects, reducing measurement time and complexity, and providing instant feedback on breathing patterns relative to a target profile, improving the accuracy and speed of respiratory analysis.
Implementation Method 1
a flow meter for determining an instantaneous flow volume of the inhaled and exhaled gases
Implementation Method 2
a component gas concentration sensor for determining an instantaneous fraction of a predetermined component gas
Data Source
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AI summary
The present disclosure provides examples of a method, including: providing a representative inhale-exhale cycle breathing volume over time profile; and when the subject performs at least one inhale-exhale cycle that meets a correspondence criterion related to the representative profile, using data relating to oxygen consumption or carbon dioxide production during the inhale-exhale cycle that met the correspondence criterion to determine a metabolic property in the subject.