公开(公告)号：US20150094592A1

公开(公告)日：2015-04-02

申请号：US14497295

申请日：2014-09-25

Applicant: Texas Instruments Incorporated

Inventor： Sourabh Ravindran ,  Jonathon David Spaulding

IPC: A61B8/08 ,  A61B8/00 ,  A61B8/02

CPC classification number: A61B8/5223 ,  A61B8/02 ,  A61B8/462 ,  A61B8/488 ,  A61B8/5207

Abstract: A method for ultrasound based heart rate detection in a heart rate monitoring system is provided that includes receiving a demodulated Doppler ultrasound signal, applying a bandpass filter to the demodulated Doppler ultrasound signal to remove a direct current (DC) component and out-of-band noise, wherein a filtered demodulated Doppler ultrasound signal is generated, rectifying the filtered demodulated Doppler ultrasound signal to generate a rectified filtered demodulated Doppler ultrasound signal, applying a low-pass filter to the rectified filtered demodulated Doppler ultrasound signal to filter out undesired components to leave a resulting signal corresponding to power shift due to heart rate, detecting peaks in the resulting signal, and computing a heart rate based on the detected peaks.

Abstract translation: 提供了一种心率监测系统中基于超声波心率检测的方法，包括接收解调的多普勒超声信号，将带通滤波器应用于解调的多普勒超声信号以去除直流（DC）分量和带外 噪声，其中产生经滤波的解调多普勒超声信号，整流滤波的解调多普勒超声信号以产生经整流的滤波解调多普勒超声信号，对经整流滤波的解调多普勒超声信号应用低通滤波器以滤除不期望的分量以离开 对应于由心率引起的功率偏移的结果信号，检测所得信号中的峰值，以及基于检测到的峰值计算心率。

公开(公告)号：US10376243B2

公开(公告)日：2019-08-13

申请号：US14497295

申请日：2014-09-25

Applicant: Texas Instruments Incorporated

Inventor： Sourabh Ravindran ,  Jonathon David Spaulding

IPC: A61B8/00 ,  A61B8/02 ,  A61B8/08

Abstract: A method for ultrasound based heart rate detection in a heart rate monitoring system is provided that includes receiving a demodulated Doppler ultrasound signal, applying a bandpass filter to the demodulated Doppler ultrasound signal to remove a direct current (DC) component and out-of-band noise, wherein a filtered demodulated Doppler ultrasound signal is generated, rectifying the filtered demodulated Doppler ultrasound signal to generate a rectified filtered demodulated Doppler ultrasound signal, applying a low-pass filter to the rectified filtered demodulated Doppler ultrasound signal to filter out undesired components to leave a resulting signal corresponding to power shift due to heart rate, detecting peaks in the resulting signal, and computing a heart rate based on the detected peaks.