Apparatus using time-based electrical characteristics to identify an electrical appliance

• US 8,463,452 B2
• Filed: 07/29/2009
• Issued: 06/11/2013
• Est. Priority Date: 07/29/2008
• Status: Active Grant

• Current Assignee: dAlchemy, Inc.
• Original Assignee: Enmetric Systems, Inc.
• Inventors: Masters, Gilbert J., Pernia, Marcos B.
• Primary Examiner(s): ROBERTSON, DAVID
• Application Number:
  US12/512,013
• Publication Number:
  US 20100030393A1
• Time in Patent Office: 1,413 Days
• Field of Search: 700/295, 700/292, 702/57, 702 60- 62, 324/76.12, 340/657, 713/340
• US Class Current: 700/295
• CPC Class Codes: G01R 19/2506 Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values G01R19/003 takes precedence; Details concerning sampling, digitizing or waveform capturing displaying waveforms G01R13/00; analog sampling G01R19/0053

Abstract

Disclosed is an apparatus for analyzing time-base electrical load characteristics of an electrical appliance on a micro-grid, to identify the type of the appliance and to monitor its utility usage and operational condition. The apparatus has a signal conditioner; a signature engine; an ID-engine; and a database. A system manager provides control and external communications. The signal conditioner receives load character input signals, and generates a conditioned signal containing the load'"'"'s electrical characteristics and sends the signal to the signature engine. The signature engine generates a signature signal based on the conditioned signal. The ID-engine takes the signature signal, analyzes it in view of signature ID criteria stored in the database to identify the type of the attached electrical appliance, and stores the identity in the database. The database can be utilized to identify the type of other appliances and to monitor their utility usage and operational condition.

Claims

1. An apparatus (10) for analyzing time-based electrical load characteristics of an electrical appliance on a premises micro-power grid to identify an individual specific electrical appliance, the apparatus consisting of:

a signal conditioner (20) receiving electrical load character signals (14) of the electrical appliance, the signal conditioner (20) adapted to generate a conditioned signal (24) adapted for use by other components of the apparatus;

a signature engine (40) adapted to receive the conditioned signal (24) and to generate a signature signal (44) based on the conditioned signal (24), the signature signal including signature data and an assigned value in the signature signal to make the signature signal unique to the electrical appliance;

an ID-engine (60) adapted to receive the signature signal (44), to analyze the signature data in the signature signal (44) in view of a set of signature ID criteria (66) to identify the individual specific electrical appliance, and to store the identity in a database (80), and further adapted to derive the identity of the appliance through a user interaction and/or calls to a remote database for storage and additional signature ID data; and

a system manager (90) adapted to provide overall control of the apparatus (10), and having I/O interfaces (94) for sending and receiving signals (94, 14).

2. The apparatus (10) of claim 1 for analyzing time-based electrical load characteristics of a specific electrical appliance, wherein the signal conditioner (20) receives and conditions both steady state and transitional state electrical load characteristic signals (14) from the specific appliance.

3. The apparatus (10) of claim 1, wherein the signal conditioner (20) receives and conditions a steady state time-based electrical load characteristics signal of the appliance, and the apparatus identifies (10) the specific electrical appliance.

4. The apparatus (10) of claim 1, wherein the signal conditioner (20) receives and conditions a transitional state time-based electrical load characteristics signal of the appliance, and the apparatus identifies (10) the specific electrical appliance.

5. The apparatus (10) of claim 1, wherein the conditioned signal (24) output from the signal conditioner (20) is generated from received a steady state and/or transitional state time-based electrical load data characteristic signal (14).

6. The apparatus (10) of claim 1, wherein the conditioned signal (24) output from the signal conditioner (20) is generated in response to an on/off transitional state signal of the appliance.

8. The apparatus (10) of claim 1 for analyzing an electrical load characteristic signal from an electrical appliance, wherein the indicia of the individual specific electrical appliance stored by the ID-engine (60) in the database (80) includes an identification of a specific apparatus (10) causing the indicia to be stored in the database (80).

7. An apparatus (10) for analyzing a time-based electrical load characteristic signal from an electrical appliance load on a micro-power grid to identify an electrical appliance of the load as an individual specific electrical appliance, the apparatus comprising:

a signal conditioner (20) receiving the electrical load characteristic signal (14) of the electrical appliance, the signal conditioner (20) adapted to pre-process the received electrical load signal to generate a conditioned signal (24) for use by other components of the apparatus (10);

a signature engine (40) adapted to receive the conditioned signal (24) and generate a signature signal (44) based on the conditioned signal (24), the signature signal including an indicia to make the signature signal unique to the electrical appliance;

an ID-engine (60) adapted to receive the signature signal (44), to analyze the signature signal (44) in view of a set of signature ID criteria (66) to identify the individual specific electrical appliance, and to store the identity and the indicia of the individual specific electrical appliance in a database (80), and to compare the time-based electrical load characteristic signal to the database to determine whether the individual specific appliance is operating abnormally and requires the signal conditioner (20) to more selectively filter the load characteristics signal data (14) to collect diagnostic data; and

a system manager (90) adapted to provide overall control of the apparatus (10), and having I/O interfaces (94) for sending and receiving signals (94, 14).