Electrical activity sensor device for detecting electrical activity and electrical activity monitoring apparatus
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United States of America Patent
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Nov 21, 2017
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N/A
app pub date -
Apr 6, 2015
filing date -
Apr 11, 2014
priority date (Note) -
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Abstract
An electrical activity sensor attachable to a power cable of an electrical device for detecting an impulse generated in the power cable in response to a change in electrical power state of the electrical device, the electrical activity sensor comprising an antenna assembly comprising an antenna element operable to magnetically couple with an electrical pulse generated in the power cable to induce an electrical signal in response to a change in electrical power state of the electrical device; and at least one dipole type antenna configured operate as a half wave dipole in the operating frequency range of the antenna element and to magnetically couple to the antenna element wherein the dipole type conductor is operable to wirelessly transmit data representative of the power state change of the electrical device to a remote reader.
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