Systems and methods for detecting physical changes without physical contact
First Claim
1. A system for detecting and analyzing a change in a body, comprising:
- an electric field generator configured to generate an electric field that associates with the body;
an external sensor device that sends information to the electric field generator, configured to detect a physical change in the body in the electric field, wherein the physical change causes a frequency change of the electric field;
a quadrature demodulator that receives the electric field from the electric field generator, configured to detect the frequency change of the electric field generated by the electric field generator and to produce a detected response; and
a controller, coupled to the electric field generator, configured to;
receive the detected response from the quadrature demodulator,output a frequency control signal to the electric field generator, andmodify the frequency of the electric field by adjusting the frequency control signal.
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Accused Products
Abstract
Systems and methods are provided for detecting and analyzing changes in a body. A system includes an electric field generator, an external sensor device, a quadrature demodulator, and a controller. The electric field generator is configured to generate an electric field that associates with a body. The external sensor device sends information to the electric field generator and is configured to detect a physical change in the body in the electric field, where the physical change causes a frequency change of the electric field. The quadrature demodulator receives the electric field from the electric field generator and is configured to detect the frequency change of the electric field and to produce a detected response. The controller, coupled to the electric field generator, is configured to output a frequency control signal to the electric field generator and to modify the frequency of the electric field by adjusting the frequency control signal.
55 Citations
20 Claims
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1. A system for detecting and analyzing a change in a body, comprising:
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an electric field generator configured to generate an electric field that associates with the body; an external sensor device that sends information to the electric field generator, configured to detect a physical change in the body in the electric field, wherein the physical change causes a frequency change of the electric field; a quadrature demodulator that receives the electric field from the electric field generator, configured to detect the frequency change of the electric field generated by the electric field generator and to produce a detected response; and a controller, coupled to the electric field generator, configured to; receive the detected response from the quadrature demodulator, output a frequency control signal to the electric field generator, and modify the frequency of the electric field by adjusting the frequency control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for detecting and analyzing changes in a body, the method comprising:
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generating, by an electric field generator, an electric field that associates with the body; detecting, by an external sensor device, a physical change in the body in the electric field, wherein the physical change affects frequency of the electric field; monitoring and detecting, by a quadrature demodulator, changes in the frequency of the electric field and producing a detected response with at least a frequency component; receiving, by a controller, the detected response with at least a frequency component; outputting, by the controller, a frequency control signal to modify the frequency of the electric field associated with the body; and modifying, by the electric field generator, the electric field associated with the body based on the frequency control signal.
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20. A non-transitory computer readable medium storing executable instructions operable for detecting and analyzing a change in a body to cause a processor to perform operations comprising:
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generating, by an electric field generator, an electric field that associates with the body; detecting, by an external sensor device, a physical change in the body in the electric field, wherein the physical change affects frequency of the electric field; monitoring and detecting, by a quadrature demodulator, changes in the frequency of the electrical field and producing a detected response with at least a frequency component; receiving, by a controller, the detected response with at least a frequency component; outputting, by the controller, a frequency control signal to modify the frequency of the electric field associated with the body; and modifying, by the electric field generator, the electric field associated with the body based on the frequency control signal.
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Specification