Patent ID: 11942793
Assignee: SIGMASENSE, LLC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 18:
19. A device that is operative to transfer power wirelessly, the device comprising:
a drive-sense circuit (DSC) operably coupled to receive a reference signal and to generate a drive signal based on the reference signal, wherein, when enabled, the DSC operably coupled and configured to:
provide the drive signal to a first coil via a single line and via a resonating capacitor and simultaneously to sense the drive signal via the single line, wherein the first coil is implemented to transfer power wirelessly to a second coil of another device, wherein sensing of the drive signal via the single line includes detection of one or more electrical characteristics of the drive signal;
generate a digital signal representative of the one or more electrical characteristics of the drive signal based on an error signal corresponding to a difference between the drive signal and the reference signal, wherein the one or more electrical characteristics of the drive signal includes information regarding whether the another device is within proximity to the device and is suitable for receiving power wirelessly from the device; and

stop providing the drive signal to the first coil via the single line and via the resonating capacitor based on the another device being at least one of not present or is not suitable for receiving power wirelessly from the device, wherein:
the one or more electrical characteristics of the drive signal includes at least one of:
an impedance of the another device associated with the second coil;
a change of impedance of the another device associated with the second coil;
a range of change of the impedance of the another device associated with the second coil;
an impedance profile of the another device associated with the second coil;
a current flowing through the first coil;
a change of current flowing through the first coil; or
a current profile of the current flowing through the first coil.