发明申请
US20100198083A1 Random Body Movement Cancellation for Non-Contact Vital Sign Detection
有权
随机身体移动取消非接触式生命体征检测
- 专利标题: Random Body Movement Cancellation for Non-Contact Vital Sign Detection
- 专利标题(中): 随机身体移动取消非接触式生命体征检测
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申请号: US12668700申请日: 2008-07-11
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公开(公告)号: US20100198083A1公开(公告)日: 2010-08-05
- 发明人: Jenshan Lin , Changzhi Li , Ya-Chi Liu
- 申请人: Jenshan Lin , Changzhi Li , Ya-Chi Liu
- 申请人地址: US FL Gainesville
- 专利权人: University of Florida Research Foundation, Inc
- 当前专利权人: University of Florida Research Foundation, Inc
- 当前专利权人地址: US FL Gainesville
- 国际申请: PCT/US08/69766 WO 20080711
- 主分类号: A61B5/0205
- IPC分类号: A61B5/0205
摘要:
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.