发明名称 |
Random Body Movement Cancellation for Non-Contact Vital Sign Detection |
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. |
申请公布号 |
US2010198083(A1) |
申请公布日期 |
2010.08.05 |
申请号 |
US20080668700 |
申请日期 |
2008.07.11 |
申请人 |
UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC |
发明人 |
LIN JENSHAN;LI CHANGZHI;LIU YA-CHI |
分类号 |
A61B5/0205 |
主分类号 |
A61B5/0205 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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