Method for ultrasonically measuring heart rate via finger, apparatus for ultrasonically measuring heart rate via finger, electronic device, and storage medium

Abstract

A method and apparatus for ultrasonically measuring a heart rate via a finger, and an electronic device are provided. The method includes: acquiring, when the finger presses the screen, a correspondence function between an echo signal and a fly time, and determining a target fly time based on the correspondence function, wherein the fly time is time elapsed from transmission to reception of an ultrasonic signal; transmitting the ultrasonic signal to the finger, receiving a current echo frame returned from the finger and carrying fingerprint information of the finger based on the target fly time; determining a time domain sampling signal based on an inter-frame difference between the current echo frame and a reference frame; and calculating a heart rate value based on the time domain sampling signal. Through the above steps, heart rate measurement can be achieved through a finger based on an ultrasonic fingerprint apparatus.