Device and cloud server providing safety service by identifying electric heating device
US11201757B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2019 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | Feb 19, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B1/0252
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wireless electric power sensing device can include a communication unit configured to communicate with an external device; a measuring unit configured to measure power consumption information corresponding to a plurality of devices located within a target space; and a central control unit configured to detect a point in time when one or more square waves are included in the power consumption information, determine reactive power based the power consumption information, identify an electric heating device from among the plurality of devices within the target space based on a rate of change in the reactive power, determine when an operation time of the electric heating device exceeds a predetermined amount of time based on a change in the power consumption information, and in response to the operation time of the of the electric heating device exceeding the predetermined amount of time, transmit, via the communication unit, identification information for the electric heating device and information about the operation time of the electric heating device to the external device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.