发明名称 |
Apparatus and methods for remote detection of physiological changes |
摘要 |
An apparatus for sensing motion having a transmitter for transmitting a carrier signal; a frequency control connected to the transmitter for controlling the frequency of the carrier signal; a first receiver for receiving the reflected transmitted carrier signal; a second receiver for receiving the reflected transmitted carrier signal, the second receiver being placed out of phase by less than a wavelength of the carrier signal from the first receiver; means for subtracting the carrier signal received by the second receiver from the carrier signal received by the first receiver to produce an error signal; wherein when motion is sensed by the apparatus, the error signal moves from zero thereby causing a corrective signal to be generated and sent to the frequency control, the frequency control forcing the error signal to zero.
|
申请公布号 |
US8378879(B2) |
申请公布日期 |
2013.02.19 |
申请号 |
US20100817765 |
申请日期 |
2010.06.17 |
申请人 |
THE JOHNS HOPKINS UNIVERSITY;LEWIS DOUGLAS L.;FELDMAN ANDREW E.;EDDINS CHRISTOPHER L. |
发明人 |
LEWIS DOUGLAS L.;FELDMAN ANDREW E.;EDDINS CHRISTOPHER L. |
分类号 |
G01S13/56;G01S7/00;G01S7/40;G01S13/00 |
主分类号 |
G01S13/56 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|