Jonathan Chu

US Patent:

20130191103, Jul 25, 2013

Filed:

Jan 19, 2012

Appl. No.:

13/353513

Inventors:

Jonathan Michael Chu - San Jose CA, US
Eric Ping Wu - San Jose CA, US
Yungnun Mark Chung - Sunnyvale CA, US
Bertrand J. Kuo - Sunnyvale CA, US

Assignee:

Verdigris Technologies, Inc. - Moffett Field CA

International Classification:

G06F 17/50

US Classification:

703 14

Abstract:

Waveform analysis is performed to identify and characterize power-consuming devices operating on a building electrical circuit. Current waveforms are measured from the building circuit with electrical devices operating thereon. The waveforms are separated into wavelets and analyzed to identify a representative wavelet model which is transmitted to a server for analysis. The server compares the representative wavelet model to a predictive model built from waveform signatures of known electrical devices operating on a circuit. When the predictive model matches the representative wavelet model, the electrical devices contributing to the representative wavelet, their operating mode(s) (e.g., “on”, “off”, “paused”, “hibernating”) and/or their performance state(s) (e.g., normal operation, deterioration, or failure modes) can be identified. This information can be communicated as feedback to the consumer to facilitate more efficient and more cost-effective energy usage.

US Patent:

20210144077, May 13, 2021

Filed:

Aug 9, 2018

Appl. No.:

16/635974

Inventors:

- MOUNTAIN VIEW CA, US
Jonathan CHU - Mountain View CA, US

International Classification:

H04L 12/26
H04L 12/10
H04W 4/38
G06Q 50/06
G01R 21/133

Abstract:

A method of monitoring power systems over a wireless network protocol. The method includes receiving input waveform data containing a power event, capturing a pair of windows of the waveform data proximate to the power event, determining a hash for each of the pairs of window of waveform data, comparing each determined hash of each of the pair of windows to a library of hashes of previously encountered events, and based on the comparison of each determined hash of each pair of windows, transmitting the raw waveform of at least one of the pair windows over the wireless network protocol to an event detection system.