Structural health monitoring system
First Claim
1. A structural health monitoring device comprising:
- a measuring circuit including a processing circuit communicatively coupled to a pair of electrodes attachable to a target area of a workpiece, the measuring circuit in communication with a radio circuit having an antenna configured to facilitate offboard communication; and
an energy harvester circuit configured to provide electrical power to the measuring circuit;
wherein the measuring circuit is configured to measure an impedance of the target area of the workpiece;
wherein the processing circuit is configured to determine a change in the impedance of the target area indicative of a change in structural health of the workpiece; and
wherein the radio circuit is configured to transmit information received from the measuring circuit regarding a measured impedance of the target area to an offboard reader.
1 Assignment
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Accused Products
Abstract
A structural health monitoring system may include a structural health monitoring device comprising a measuring circuit attachable to a target area of a workpiece. The measuring circuit may be communication with a radio circuit having an antenna configured to facilitate offboard communication. The measuring circuit may be configured to measure an impedance of the target area of the workpiece, and the processing circuit may be configured to determine a change in the impedance of the target area indicative of a change in structural health of the workpiece. An ambient energy harvester circuit may be configured to provide electrical power to the measuring circuit. A remote reader may wirelessly interrogate the structural health monitoring device to obtain information regarding the change in the impedance of the target area.
12 Citations
20 Claims
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1. A structural health monitoring device comprising:
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a measuring circuit including a processing circuit communicatively coupled to a pair of electrodes attachable to a target area of a workpiece, the measuring circuit in communication with a radio circuit having an antenna configured to facilitate offboard communication; and an energy harvester circuit configured to provide electrical power to the measuring circuit; wherein the measuring circuit is configured to measure an impedance of the target area of the workpiece; wherein the processing circuit is configured to determine a change in the impedance of the target area indicative of a change in structural health of the workpiece; and wherein the radio circuit is configured to transmit information received from the measuring circuit regarding a measured impedance of the target area to an offboard reader. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A structural health monitoring system comprising:
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a structural health monitoring device comprising a measuring circuit including a processing circuit communicatively coupled to a pair of electrodes attachable to a target area of a workpiece, the measuring circuit in communication with a radio circuit having an antenna configured to facilitate offboard communication; and an energy harvester circuit configured to provide electrical power to the measuring circuit; wherein the measuring circuit is configured to measure an impedance of the target area of the workpiece; and wherein the processing circuit is configured to determine a change in the impedance of the target area indicative of a change in structural health of the workpiece; and a reader configured to receive information regarding a measured impedance of the target area transmitted from the antenna and wirelessly interrogate the structural health monitoring device to obtain information regarding the change in the impedance of the target area. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for structural health monitoring, the method comprising:
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monitoring structural health of a workpiece using a structural health monitoring device coupled to the workpiece, the structural health monitoring device comprising a measuring circuit including a processing circuit communicatively coupled to a pair of electrodes attached to a target area of the workpiece, wherein the measuring circuit is configured to measure an impedance of the target area of the workpiece, and wherein the processing circuit is configured to determine a change in the measured impedance of the target area indicative of a change in structural health of the workpiece; harvesting environmental energy using an energy harvesting circuit of the structural health monitoring device to provide electrical power to the structural health monitoring device; and transmitting information regarding the measured impedance of the target area to an offboard reader using a radio circuit of the structural health monitoring device in communication with the measuring circuit. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification