Embedded sensors
AssigneeOhio State Innovation Foundation
InventorsMarkus Novak, Lisa Militello, Asimina Kiourti
Life of this patent
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Abstract
An example embedded sensor system is described herein. The example embedded sensor includes a plurality of transmission traces, a plurality of coupling traces; and a plurality of fringing field regions formed by adjacent transmission traces and coupling traces. Optionally, the embedded sensor system can include a processor operably coupled to a switch, and configured to: select a transmission trace and a coupling traces from the plurality of transmission traces and coupling traces using the switch; and measure a capacitance between the transmission trace and the coupling trace.
Claims20
An embedded sensor disposed on a textile substrate comprising:
- a plurality of transmission traces disposed on the textile substrate;
- a plurality of coupling traces disposed on the textile substrate;
- and
- a plurality of fringing field regions formed by adjacent transmission traces and coupling traces, wherein the embedded sensor is configured to operate without a ground plane adjacent to the plurality of transmission traces and the plurality of coupling traces.
A method comprising:
- transmitting a megahertz-frequency signal through a transmission trace disposed on a textile substrate;
- measuring capacitance at a coupling trace, wherein the coupling trace is electrically coupled to the transmission trace and disposed on the textile substrate;
- and
- determining a property of an object based on the capacitance, wherein measuring the capacitance comprises, at a single-channel measurement port selectively coupled to the transmission trace and the coupling trace, obtaining a reflection coefficient S11 and determining the capacitance from a phase of the reflection coefficient.
A system comprising:
- an embedded sensor disposed on a textile substrate comprising:
- a plurality of transmission traces disposed on the textile substrate;
- a plurality of coupling traces disposed on the textile substrate;
- and
- a plurality of fringing field regions formed by adjacent transmission traces and coupling traces wherein the embedded sensor is configured to operate without a ground plane adjacent to the plurality of transmission traces and the plurality of coupling traces;
- a computing device operably coupled to the embedded sensor, wherein the computing device comprises at least one processor and memory, the memory having computer-executable instructions stored thereon that, when executed by the at least one processor, cause the at least one processor to:
- transmit a signal through a transmission trace;
- measure a capacitance at a coupling trace, wherein the coupling trace is electrically coupled to the transmission trace;
- determine a property of an object based on the capacitance;
- and output the property of the object.
Dependencies are inferred from the claim text.