公开(公告)号：US12072357B1

公开(公告)日：2024-08-27

申请号：US16021744

申请日：2018-06-28

Applicant: Amazon Technologies, Inc.

Inventor： Matthew Liang Chaboud ,  Cameron Dean Whitehouse ,  Joseph A. Cullen ,  Arielle Rachel Bertman

IPC: G01R21/133 ,  G01R23/00 ,  H02J13/00

CPC classification number: G01R21/133 ,  G01R23/005 ,  H02J13/0006

Abstract: Described implementations monitor potential voltage at a location to determine device usage at the location. The implementations utilize a plug-in energy sensor that is plugged directly into any electrical outlet at the location and measures deviation in voltage at the location. Once plugged into an electrical outlet, the plug-in energy sensor monitors one or more of the positive line and ground and/or the neutral line and ground for changes in potential voltage at the location. The plug-in energy sensor may also inject a load (resistive load, inductive load, capacitive load) into the electrical circuit at the location and then measure the signal or response to the injected load.

公开(公告)号：US12253543B1

公开(公告)日：2025-03-18

申请号：US16021735

申请日：2018-06-28

Applicant: Amazon Technologies, Inc.

Inventor： Cameron Dean Whitehouse ,  Matthew Liang Chaboud ,  Joseph A. Cullen ,  Arielle Rachel Bertman

IPC: G01R15/12 ,  G01R21/00 ,  H01R13/66

Abstract: Described implementations monitor potential voltage at a location to determine device usage at the location. The implementations utilize a plug-in energy sensor that is plugged directly into any electrical outlet at the location and measures deviation in voltage at the location. Once plugged into an electrical outlet, the plug-in energy sensor monitors one or more of the lead line and ground, the neutral line and ground, and/or the ground line with respect to a reference for changes in potential voltage at the location. Different devices and different device states of those devices generate different signatures of voltage as they operate, thereby making the signatures unique, or almost unique, to different device types, different devices, and/or different device states. By monitoring for signatures in the voltage, operation of devices in different device states at the location can be determined, along with start times and stop times of those states associated with the various devices.