RR Integral Average Stress Model via Heart Rate Variability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for measuring mental stress, such as psychological questionnaires and stress hormone level measurements, are either time-consuming, invasive, or not suitable for real-time continuous monitoring, making them ineffective for accurately determining stress levels.
Innovation Solution
A method using an RR Integral Average (RRIA) calculated from heart rate variability (HRV) data, which can be derived from cardiac sensors and processed by computing devices like smartphones, to determine stress levels in a non-invasive and real-time manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If psychological questionnaires are used to measure stress, then stress levels can be assessed, but the method is time-consuming and not suitable for real-time monitoring
Solution Approach 1:
The patent replaces the mechanical/questionnaire-based stress assessment system with a physiological monitoring system using cardiac sensors to detect heart rate variability and calculate RR integral average, enabling automatic real-time stress measurement without manual completion by the subject
Solution Approach 2:
The system enables self-service stress monitoring where the subject's own cardiac signals are automatically captured and processed to generate stress level indicators without requiring active participation or time investment from the subject
2Measurement precision
If stress hormone levels are measured in blood, urine, or saliva, then stress levels can be determined, but the method is invasive and difficult for continuous monitoring
Solution Approach 1:
The patent substitutes invasive biochemical sampling methods with non-invasive cardiac signal monitoring, using electrical signals from the heart to infer stress levels through heart rate variability analysis without requiring blood, urine, or saliva samples
Solution Approach 2:
The system uses heart rate variability as an intermediary indicator that reflects stress-related physiological changes without requiring direct measurement of stress hormones, providing an indirect but non-invasive pathway to assess stress levels
3Measurement precision
If psychological questionnaires are used, then stress assessment is possible, but the results may be delayed and differ from actual stress experienced
Solution Approach 1:
The patent implements continuous stress monitoring by continuously capturing cardiac signals and calculating RR integral average in real-time, providing ongoing stress level indicators that reflect current stress states rather than delayed retrospective assessments
Data Source
AI summary
A method of determining stress includes receiving a data signal including multiple consecutive RR intervals of a subject. The method may also include calculating heart rate variability (HRV) data for the subject from the data signal. The method may also include calculating an RR integral average (RRIA) from the HRV data, the RRIA indicating a stress level of the subject.