Method and system for measurement of current flows in fastener arrays
First Claim
1. A method for measuring current flows through fasteners in a multi-structure composite joint, comprising:
- inserting a printed circuit board between at least two structures, the printed circuit board being etched with at least one Rogowski coil sensory circuit, the two structures being joined with at least one fastener extending through the at least one Rogowski coil sensory circuit in the printed circuit board;
detecting current in the at least one fastener using the corresponding Rogowski coil;
transmitting the detected current from each fastener to a corresponding passive integrator circuit for capturing transient pulses and integrating the pulses into an output; and
transmitting the array output to a processing unit.
1 Assignment
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Accused Products
Abstract
A method and apparatus for simultaneously measuring current flows through individual structures in a multi-structure composite joint is provided. The method comprising inserting a printed circuit board, etched with Rogowski coil sensory circuits, inside the joint between at least two structures with the at least two structures extending through the Rogowski coil sensory circuits in the printed circuit board; detecting induced current in the at least two fasteners; transmitting the induced current to a passive integrator array for capturing transient pulses from the printed circuit board and integrating the pulses into an array output; transmitting the array output to a processing unit.
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Citations
19 Claims
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1. A method for measuring current flows through fasteners in a multi-structure composite joint, comprising:
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inserting a printed circuit board between at least two structures, the printed circuit board being etched with at least one Rogowski coil sensory circuit, the two structures being joined with at least one fastener extending through the at least one Rogowski coil sensory circuit in the printed circuit board; detecting current in the at least one fastener using the corresponding Rogowski coil; transmitting the detected current from each fastener to a corresponding passive integrator circuit for capturing transient pulses and integrating the pulses into an output; and transmitting the array output to a processing unit. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9)
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7. (canceled)
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10. A system for simultaneously measuring current flows through fasteners in a multi-structure composite joint, comprising:
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a printed circuit board etched with at least two Rogowski coil sensory circuits, each Rogowski coil being wound in a double-helix pattern, the printed circuit board being inserted inside the joint between at least two structures joined with at least two fasteners, with the at least two fasteners each extending through a corresponding Rogowski coil sensory circuit; a passive integrator array having at least two passive integrator circuits for receiving a corresponding output from each Rogowski coil sensory circuit and integrating the outputs into an array output; and a processing unit for displaying the array output. - View Dependent Claims (11, 13, 14, 15, 16, 17, 18, 19)
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12.
Specification