A heart rate detection method applied to earphones and earphones capable of detecting heart rate

Abstract

The invention discloses a heart rate detection method applied to an ear phone and the ear phone capable of detecting the heart rate. The heart rate detection method comprises the steps that a cavity is formed in the ear phone, and a first microphone is installed in the cavity; a second microphone is installed inside the head of the ear phone; adaptive filtering processing is conducted on a signal acquired by the second microphone, so that an estimation signal of a signal, generated by an ear phone loudspeaker, in signals acquired by the first microphone is obtained; the estimation signal is subtracted from the signals acquired by the first microphone, and a signal related to the heart rate is obtained; heart rate detection is conducted according to the signal related to the heart rate. According to the technical scheme, the first microphone is arranged in the airtight cavity, and therefore interference from external noise is reduced; the estimation signal is obtained by conducting adaptive filtering on the signal acquired by the second microphone, the estimation signal is subtracted from the signals acquired by the first microphone, then heart rate detection is conducted, and therefore the influence of the signal generated by the ear phone loudspeaker on heart rate detection can be eliminated.

Description

technical field [0001] The invention relates to the technical field of earphones and heart rate detection, in particular to a heart rate detection method applied to earphones and an earphone capable of detecting heart rate. Background technique [0002] With the continuous development of social economy, people's material living standards are improving day by day, and people are paying more and more attention to their health. Heart rate detection will provide people with very important information about health. Any display that is different from the normal heart rate indicates that there is a problem with health. Through heart rate detection, we can find out whether there is a problem with our body in time. Heart rate detection can also reflect whether people's exercise intensity is appropriate to a certain extent. In order to get the best exercise effect, people should keep their heart rate within a certain range during exercise, and heart rate detection can provide a reaso...

AI Technical Summary

Problems solved by technology

However, since the earphone cannot occupy the entire ear canal, it will cause gas leakage in the ear canal, causing the microphone to detect no pressure changes

[0005] In addition, there is another important problem in using earphones to detect heart rate, which is unavoidably affected by the signal (such as music or voice) generated by the earphone speaker, which will greatly affect the detection of heart rate.

Images