Heart rate detection method and system based on PPG signal

Abstract

The invention provides a heart rate detection method and system based on PPG signals, and relates to the medical communication technical field; the method comprises the following steps: using a PPG sensor to output a corresponding heart rate waveform according to heart rate changes of a tested human body; carrying out heart rate waveform Fourier transform so as to obtain a heart rate frequency spectrum corresponding to the heart rate waveform; setting three peaks in the heart rate frequency spectrum heart rate frequency range, comparing frequencies corresponding to the three peaks with the previous heart rate, and taking the heart rate peak with the frequency most close to the previous heart rate as the present heart rate peak; using the frequency corresponding to the present heart rate peak as the present heart rate of the tested human body, and outputting same. The method and system can solve the problems that an existing method cannot eliminate the continuous motion interferences; even under long time continuous motion interferences, the method and system can calculate the accurate heart rate.

Description

technical field [0001] The invention belongs to the technical field of heart rate monitoring, and in particular relates to a heart rate detection method and system based on a PPG signal. Background technique [0002] Heart rate refers to the number of times the human heart beats per minute. In the detection of human body parameters, heart rate is a very important physiological indicator and provides a reference for medical diagnosis. At the same time, heart rate can also be used as an objective evaluation index of the physiological load of human exercise, and has been widely used in various aspects of fitness exercises and competitive sports training. At present, heart rate monitors still have many limitations. Finger clip heart rate monitoring requires the subject to remain still during measurement. ECG electrode heart rate monitoring requires electrodes to be attached to a fixed position on the skin to monitor heart rate, which is difficult to meet future electronic health...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to provide a heart rate detection method and system based on PPG signals, aiming at solving the problem that the solutions for eliminating motion interference in PPG signals proposed in the above-mentioned prior art cannot eliminate continuous motion interference, and cannot be used in continuous motion interference. The problem of obtaining accurate heart rate under motion interference

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