Method and device for detecting and monitoring concealed bodies and objects
First Claim
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1. Apparatus for non-invasively detecting movement of object(s) and/or fluid flow in a body, said apparatus comprising:
- radio frequency (RF) transmitter means for generating RF radiation;
at least one RF antenna for directing RF radiation generated by the said transmitter means to the body being monitored;
antenna tuner means for matching the output impedance of the said transmitter means with the equivalent impedance of the said body; and
processor means for equationally processing the forward and reflected transmission-line voltages to provide an output signal representative of impedance match changes to the said body with the said transmitter, whereby to indicate movement of at least one object or fluid flow in the said body.
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Abstract
A method and a device for non-invasively and remotely detecting or monitoring visible or invisible concealed moving bodies and objects (9) located in scrutinized media (8), by means of tracking the RF impedance match variations between the inspected media which contains the targeted moving object and a stable RF transmitter (1), through surrounding the inspected media with a power field of HF EM-waves, by one or more transmitting antennas (6) made from metallic sheets or wires.
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Citations
11 Claims
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1. Apparatus for non-invasively detecting movement of object(s) and/or fluid flow in a body, said apparatus comprising:
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radio frequency (RF) transmitter means for generating RF radiation;
at least one RF antenna for directing RF radiation generated by the said transmitter means to the body being monitored;
antenna tuner means for matching the output impedance of the said transmitter means with the equivalent impedance of the said body; and
processor means for equationally processing the forward and reflected transmission-line voltages to provide an output signal representative of impedance match changes to the said body with the said transmitter, whereby to indicate movement of at least one object or fluid flow in the said body.
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2. A method of non-invasively detecting movement of object(s) and/or fluid flow in a body;
- said method comprising the steps of;
directing radio frequency (RF) radiation to the said body being monitored by RF transmitter means;
matching the output impedance of the said transmitter means with the equivalent impedance of the said body; and
equationally processing the forward and reflected transmission-line voltages to provide an output signal representative of impedance match changes to the said body with the said transmitter, whereby to indicate movement of at least one object or fluid flow in the said body.
- said method comprising the steps of;
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3. A device comprising:
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a radio frequency (RF) transmitter for generating EM-radiation for detecting and/or monitoring concealed moving object(s) and/or fluid flow in scrutinized media, the said transmitter having a power range from 0.1 to 10 watts;
means for selecting an RF transmitter frequency to substantially match the resonance frequency of the object(s) or fluid being monitored, the said frequency being in the range of 1 to 800 MHz;
at least one antenna comprising metal sheets or wires, the said antenna being adapted for location in the region of the media containing the object to be monitored;
an antenna tuner means having an imipedance matching means for matching the output impedance of the RF transmitter with the equivalent impedance of the inspected media;
means for processing the forward and/or reflected transmission-line voltages to provide a single voltage signal;
means for extracting variable signals from the forward and/or reflected transmission-line voltages to generate an indicating signal which provides an indication of movement of the targeted object or fluid flow within the inspected media;
band pass filter means for filtering the indication signals to limit the variation range to cover only an expected motion of the targeted object(s) or fluid flow; and
amplifying means for amplifying the indication signal to a level that can drive an indicator circuit. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10)
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11. A method for detecting and/or monitoring concealed moving objects or fluid flow in scrutinized media by detecting high frequency impedance match variations with the said media at a fixed Radio frequency (RF) by means of a monitoring device;
- said method comprising;
surrounding the inspected media with a field of high frequency electromagnetic (EM) waves through at least one transmitting antenna comprising metallic sheets or wires and having a power of 0.1 to 10 Watts;
matching the output impedance of the said monitoring device;
with the equivalent impedance of the inspected media;
selecting the frequency of the EM-waves to closely match the resonance frequency of the targeted moving object or fluid, in the range of 1 to 800 MHz;
extracting variable voltages from the forward and reflected transmission-line voltages; and
equationally processing the said extracted variable voltages, to produce a signal, which indicates movement of the targeted object or fluid within the inspected media.
- said method comprising;
Specification