ECG-Based Relaxation State Evaluation Using Entropy and RR Interval Parameters
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Solution Overview
Problem
Traditional relaxation state evaluation methods rely on brainwave signals, which are difficult to detect and prone to interference, making it inconvenient for individuals to assess their relaxation state effectively.
Innovation Solution
A relaxation state evaluation system using ECG data, processed to generate specific parameters such as short-scale entropy slope and variance ratios, to determine a user's relaxation state through a sensor module and evaluation module, facilitating easy and interference-resistant measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If brainwave-based evaluation methods are used, then relaxation state can be evaluated, but the measurement is difficult and prone to interference
Solution Approach 1:
The patent uses ECG signals as an intermediary to indirectly evaluate relaxation state instead of directly measuring brainwave signals. The ECG-based parameters (HRV, entropy, RR interval) serve as mediators that correlate with relaxation state but are much easier to detect with standard equipment, thus resolving the contradiction between evaluation accuracy and measurement difficulty
Solution Approach 2:
The patent replaces the complex brainwave measurement system with a simpler ECG-based evaluation system. By substituting EEG measurement with ECG analysis, the system achieves comparable relaxation state evaluation with significantly reduced measurement difficulty and interference susceptibility
2Measurement precision
If brainwave measurement is used, then relaxation state can be assessed, but special environment and precision devices are required
Solution Approach 1:
ECG signals serve as an intermediary that can be measured with simple, widely available devices while still providing accurate relaxation state evaluation. This intermediary approach eliminates the need for complex EEG equipment and specialized measurement environments
Solution Approach 2:
The patent employs inexpensive ECG measurement devices that are widely available and easy to use, replacing expensive and complex brainwave measurement equipment. The simple ECG sensors can be easily deployed without requiring specialized laboratories or precision instrumentation
3Measurement precision
If brainwave-based technology is used, then relaxation state can be evaluated, but user convenience is reduced
Solution Approach 1:
The ECG-based system enables users to independently measure and evaluate their own relaxation state using simple wearable devices or even smartphone sensors. Users can perform self-assessment without requiring specialized equipment or professional assistance, greatly improving ease of operation while maintaining evaluation accuracy
Data Source
AI summary
The present invention proposes a relaxation state evaluation system and method and a computer program product thereof. The method comprises steps: measuring ECG data of a user; analyzing the ECG data to generate a first, second, third and fourth parameters, wherein the first parameter is the short-scale entropy slope of the user before cardiovascular disease treatment (CVDT); the second parameter is the difference of the post-CVDT and pre-CVDT mean RR intervals; the third parameter is the logarithm of the variance of the pre-CVDT high frequency NN intervals; the fourth parameter is the logarithm of the ratio of the variances of the pre-CVDT low frequency and high frequency NN intervals; working out an evaluation index, which is a function of the abovementioned parameters; and evaluating the relaxation state of the user, wherein the user is determined to be in a relaxation state if the evaluation index is over a threshold.