Wireless system for measuring pressure and flow in tubes
First Claim
1. A transducer for being remotely positioned in a fluid within a vessel and for sensing a pressure generated by the fluid in the vessel, the transducer comprising:
- an antenna for capturing an externally-generated interrogation signal and for transmitting a response signal;
a response circuit coupled to the antenna for receiving the interrogation signal and for generating the response signal in response to the interrogation signal; and
a sensor coupled to the response circuit for sensing the pressure generated by the fluid and adjusting one or more electrical characteristics of the response circuit in relation to the sensed pressure;
wherein the response circuit causes a delay in the generation of the response signal so that the response signal is transmitted at a time separated from and following a transmission of artifacts of the interrogation signal.
1 Assignment
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Accused Products
Abstract
A remote sensor (100) is remotely placed within a vessel containing a fluid in order to sense a pressure generated by the fluid. The sensor includes an antenna (10) for capturing an externally-generated interrogation signal and for transmitting a response signal, a response circuit (20, 30) coupled to the antenna (10) for receiving the interrogation signal and for generating the response signal, and a sensor element (40) coupled to the response circuit. One or more electrical characteristics of the response circuit (20, 30) change in relation to the sensed pressure, thereby determining measurable characteristics of the response signal. Importantly, the response circuit (20, 30) operates to delay the transmission of the response signal to a time separated from and following transmission of artifacts of the interrogation signal.
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Citations
23 Claims
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1. A transducer for being remotely positioned in a fluid within a vessel and for sensing a pressure generated by the fluid in the vessel, the transducer comprising:
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an antenna for capturing an externally-generated interrogation signal and for transmitting a response signal; a response circuit coupled to the antenna for receiving the interrogation signal and for generating the response signal in response to the interrogation signal; and a sensor coupled to the response circuit for sensing the pressure generated by the fluid and adjusting one or more electrical characteristics of the response circuit in relation to the sensed pressure; wherein the response circuit causes a delay in the generation of the response signal so that the response signal is transmitted at a time separated from and following a transmission of artifacts of the interrogation signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A system for remotely sensing a pressure generated by a fluid within a vessel, comprising:
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a scanner for generating an interrogation signal and receiving a response signal, the scanned being positioned externally with respectect to the vessel; and a transducer positioned within the vessel, the transducer including; an antenna for receiving the interrogation signal and for transmitting the response signal; a response circuit coupled to the antenna for receiving the interrogation signal and generating the response signal in response to the interrogation signal; and a sensor coupled to the response circuit for sensing the pressure generated by the fluid and adjusting one or more electrical characteristics of the response circuit in relation to the sensed pressure; wherein the response circuit causes a delay in the transmission of the response signal so that the response signal is transmitted at a time separated from and following transmission of artifacts of the interrogation signal.
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Specification