Heart rate measuring method and device based on photoelectric sensor

Abstract

The invention discloses a heart rate measuring method and device. The method includes the steps that a photoelectric sensor senses the pulsation of vessels in the skin to obtain photoelectric sensing pulse signals; the photoelectric sensing pulse signals are sampled every a preset duration to obtain a group of sample data; the slope of the waveform of the photoelectric sensing pulse signals is obtained according to the collected sample data until the highest point and / or lowest point of the waveform of the photoelectric sensing pulse signals are / is obtained; the heart rate of heartbeat is obtained according to the highest point and / or lowest point of the waveform of the photoelectric sensing pulse signals. Thus, the precision of a collecting circuit is not required, and an accuracy rate of 90% or above can be reached in actual use.

Description

【Technical field】 [0001] The invention relates to the field of heart rate measurement, in particular to a photoelectric sensor-based heart rate measurement method and device. 【Background technique】 [0002] Heart rate measuring devices have been widely used in the medical field, but such devices are very professional and can only be used in hospitals or medical institutions. [0003] At present, smart electronic devices, such as smart phones, smart bracelets, etc., are endowed with more and more additional functions, such as measuring heart rate. The final result of this way of measuring the heart rate may not be very accurate, but it can give the user a very good experience, and can also roughly understand the heartbeat situation. [0004] However, the traditional photoelectric heart rate algorithms all use the method of envelope detection. Although the envelope detection method has the advantages of high stability and low bit error rate, it has very high requirements on t...

AI Technical Summary

Problems solved by technology

The final result of this way of measuring heart rate may not be very accurate, but it can give users a very good experience, and can also roughly understand the heartbeat

[0004] However, the traditional photoelectric heart rate algorithms all use the method of envelope detection. Although the envelope detection method has the advantages of high stability and low bit error rate, it has very high requirements on the performance of the chip, and it needs to be capable of fast Fourier transform. ability

This is what most traditional single-chip microcomputers are not capable of

Another method is to detect by judging the peak point of the ECG pulse, but although this method is fast, the photoelectric signal pulse is unstable in the sensing range of different customers, and the requirements for the sampling circuit are relatively high, so the accuracy is not high. not very high

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