公开(公告)号：US09477812B2

公开(公告)日：2016-10-25

申请号：US14276300

申请日：2014-05-13

Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.

Inventor： Jenshan Lin ,  Changzhi Li ,  Ya-Chi Liu

IPC: A61B5/08 ,  G06F19/00 ,  A61B5/05 ,  A61B5/00 ,  G06F17/14

CPC classification number: A61B5/7214 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/05 ,  A61B5/0507 ,  A61B5/0816 ,  A61B5/6823 ,  A61B5/7278 ,  A61B5/742 ,  G01S7/032 ,  G01S7/354 ,  G01S7/40 ,  G01S13/34 ,  G01S13/536 ,  G01S13/87 ,  G01S13/88 ,  G06F17/14 ,  G06F19/00 ,  G06F19/3418 ,  G16H80/00

Abstract: A method and system for cancelling body movement effect for non-contact vital sign detection is described. The method begins with sending on a first electromagnetic wave transceiver a first electromagnetic signal with a first frequency to a first side of a body, such as a person or animal. Simultaneously using a second electromagnetic wave transceiver a second electromagnetic signal is sent with a second frequency to a second side of a body, wherein the first frequency and the second frequency are different frequencies. A first reflected electromagnetic signal reflected back in response to the first electromagnetic wave on the first transceiver is received and a first baseband complex signal is extracted. Likewise a second reflected electromagnetic signal reflected back in response to the second electromagnetic wave on the second transceiver is received and a second baseband complex signal is extracted. The first baseband complex signal is mathematically combined with the second baseband complex signal to cancel out a Doppler frequency drift therebetween to yield a periodic Doppler phase effect.

Abstract translation: 描述了用于消除非接触式生命体检测的身体运动效应的方法和系统。 该方法开始于在第一电磁波收发器上发送具有第一频率的第一电磁信号到诸如人或动物的身体的第一侧。 同时使用第二电磁波收发器，第二电磁信号以第二频率发送到身体的第二侧，其中第一频率和第二频率是不同的频率。 接收响应于第一收发器上的第一电磁波反射回的第一反射电磁信号，并且提取第一基带复信号。 类似地，接收响应于第二收发器上的第二电磁波反射回的第二反射电磁信号，并且提取第二基带复信号。 第一基带复信号与第二基带复信号数学地组合以抵消其间的多普勒频移，产生周期性多普勒相位效应。

公开(公告)号：US09924906B2

公开(公告)日：2018-03-27

申请号：US15259580

申请日：2016-09-08

Applicant: University of Florida Research Foundation, Inc.

Inventor： Jenshan Lin ,  Changzhi Li ,  Ya-Chi Liu

IPC: A61B5/08 ,  A61B5/00 ,  A61B5/05 ,  G06F17/14 ,  G06F19/00 ,  A61B5/0205 ,  A61B5/024

CPC classification number: A61B5/7214 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/05 ,  A61B5/0507 ,  A61B5/0816 ,  A61B5/6823 ,  A61B5/7278 ,  A61B5/742 ,  G01S7/032 ,  G01S7/354 ,  G01S7/40 ,  G01S13/34 ,  G01S13/536 ,  G01S13/87 ,  G01S13/88 ,  G06F17/14 ,  G06F19/00 ,  G06F19/3418 ,  G16H80/00

Abstract: A method and system for cancelling body movement effect for non-contact vital sign detection is described. The method begins with sending on a first electromagnetic wave transceiver a first electromagnetic signal with a first frequency to a first side of a body, such as a person or animal. Simultaneously using a second electromagnetic wave transceiver a second electromagnetic signal is sent with a second frequency to a second side of a body, wherein the first frequency and the second frequency are different frequencies. A first reflected electromagnetic signal reflected back in response to the first electromagnetic wave on the first transceiver is received and a first baseband complex signal is extracted. Likewise a second reflected electromagnetic signal reflected back in response to the second electromagnetic wave on the second transceiver is received and a second baseband complex signal is extracted. The first baseband complex signal is mathematically combined with the second baseband complex signal to cancel out a Doppler frequency drift therebetween to yield a periodic Doppler phase effect.