System for identifying electrical devices
AssigneeSource To Site Accessories Limited
InventorsLoong Yen Johann Siau, Michael James Godfrey
Life of this patent
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Abstract
The invention relates to a system to identify an electrical device connected to an electrical outlet. The electrical outlet has a sensor configured to measure an electrical signal of an electricity supply to the electrical device connected to the electrical outlet. A processor is configured to receive the measured electrical signal and determine an electrical signature of the electrical device based on one or more features of a frequency domain spectrum of the electrical signal. A processor is configured to compare the electrical signature against a signature database to identify the electrical device.
Claims12
A system to identify and control an electrical device connected to an electrical outlet of a plurality of electrical outlets, wherein each electrical outlet comprises a sensor configured to measure an electrical signal associated with an electricity supply to an electrical device connected to the electrical outlet, the system further comprising:
- a processor configured to:
- receive a measured electrical signal of the electrical device connected to the electrical outlet of the plurality of electrical outlets;
- and
- determine an electrical signature of the electrical device based on one or more features extracted from a frequency domain spectrum of the electrical signal using a speech coding algorithm;
- and
- a processor configured to compare the electrical signature against a signature database to identify the electrical device;
- and
- a processor configured to generate a control signal for controlling the electrical outlet to which the identified electrical device is connected;
- wherein each electrical outlet further comprises a switch configured to control the supply of electricity to an electrical device connected to the electrical outlet, wherein the control signal operates the switch of the electrical outlet to which the identified electrical device is connected to control the supply of electricity to the identified electrical device based on the control signal;
- wherein the speech coding algorithm comprises one or more of:
- a Linear Predictive Coding (LPC) Coefficient, and a Linear Predictive Cepstral Coefficient (LPCC).
An electrical outlet configured to control the supply of electrical power to an electrical device connected to the electrical outlet, the electrical outlet comprising:
- a sensor configured to measure an electrical signal associated with an electricity supply to the electrical device;
- a processor configured to determine an electrical signature of the electrical device based on one or more features extracted from a frequency domain spectrum of the electrical signal using a speech coding algorithm;
- a communications interface configured to transmit the electrical signature to a server for identifying the electrical device based on the electrical signature and receive a control signal from the server;
- and
- a switch configured to control the supply of electricity to the electrical device connected to the electrical outlet based on the control signal;
- wherein the speech coding algorithm comprises one or more of:
- a Linear Predictive Coding (LPC) Coefficient, and a Linear Predictive Cepstral Coefficient (LPCC).
A server for controlling electrical devices connected to an electrical outlet, the server comprising:
- a communications interface and a processor, wherein the communications interface is configured to receive either:
- an electrical signature of an electrical device connected to an electrical outlet, wherein the electrical signature is based on one or more features of a frequency domain spectrum extracted from the electrical signal using a speech coding algorithm;
- or
- a measured electrical signal associated with an electricity supply to an electrical device connected to the electrical outlet and the processor is configured to determine an electrical signature of the electrical device based on one or more features of a portion of the frequency domain spectrum extracted from the electrical signature using a speech coding algorithm;
- and
- the processor is configured to compare the electrical signature against a signature database to identify the electrical device and generate a control signal for an electrical outlet based on the identity of the electrical device, wherein the control signal operates a switch of the electrical outlet to which the identified electrical device is connected in order to control the supply of electricity to the electrical device connected to the electrical outlet;
- wherein the speech coding algorithm comprises one or more of:
- a Linear Predictive Coding (LPC) Coefficient, and a Linear Predictive Cepstral Coefficient (LPCC).
Dependencies are inferred from the claim text.