Method for measuring heart rate intervals, and system for measuring heart rate intervals

The method and system use heart sound signals to measure inter-beat intervals by extracting frequency components and detecting peak pairs with a template waveform, addressing inefficiencies in prior methods and enhancing accuracy without requiring prior learning.

JP2026082174APending Publication Date: 2026-05-19DENSO CORP +2
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Patent Information

Application Number
JP2024194803
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-11-07
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing methods for estimating inter-beat intervals require large amounts of learning data and prior machine learning, making them inefficient and inaccurate.

Method used

A method and system that utilize heart sound signals to measure inter-beat intervals by extracting frequency components, generating a heart sound band waveform, determining the time interval between heart sounds, and detecting peak pairs using a template waveform without prior machine learning.

Benefits of technology

Accurately measures heart rate intervals using heart sound signals, eliminating the need for prior machine learning and improving detection accuracy by reducing false peaks.

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Abstract

This technology provides highly accurate estimation of heart rate intervals without requiring prior machine learning. [Solution] The disclosed method includes (a) a step of extracting frequency components of the heart sound band from a heart sound signal including the first heart sound and the second heart sound, and generating a heart sound band waveform SBW by integrating the amplitude components of the heart sound band at each time; (b) a step of determining the time interval TI between the first heart sound and the second heart sound; and (c) a step of detecting the interval between the appearance of peak pairs having a time interval TI in the heart sound band waveform SBW to determine the heartbeat interval.
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