Research on blood oxygen and heart rate detection algorithm based on infrared detection

摘要

Blood oxygenation and heart rate detection based on infrared detection technology is one of the basic technologies of modern wearable devices and medical monitoring. In order to obtain fast and accurate blood oxygen and heart rate, this paper studies the algorithm for acquiring heart rate and blood oxygen. First, the pulse wave signal is collected based on hardware and software design. The pulse wave is then converted to a bipolar signal by a time domain method and a frequency domain method. The spectrum of the pulse wave is obtained by moving average filtering and fast Fourier transform. Finally, real-time heart rate and blood oxygen data are calculated based on the spectral waveform data. The experimental results show that the algorithm studied in this paper runs very well, and both methods can obtain actual heart rate and blood oxygen data.