US 11,754,607 B2
Detection of electric discharges that precede fires in electrical wiring
Robert S. Marshall, Ijamsville, MD (US); Christopher Dale Sloop, Mount Airy, MD (US); Stan Heckman, Chelmsford, MA (US); Donnie Bixler, Woodsboro, MD (US); and Eric Hoppmann, Rockville, MD (US)
Assigned to Whisker Labs, Inc., Germantown, MD (US)
Filed by Whisker Labs, Inc., Germantown, MD (US)
Filed on Feb. 14, 2022, as Appl. No. 17/670,691.
Application 17/670,691 is a continuation of application No. 16/811,756, filed on Mar. 6, 2020, granted, now 11,249,125.
Application 16/811,756 is a continuation of application No. 16/359,755, filed on Mar. 20, 2019, granted, now 10,641,806, issued on May 5, 2020.
Claims priority of provisional application 62/645,743, filed on Mar. 20, 2018.
Prior Publication US 2022/0163578 A1, May 26, 2022
Int. Cl. G01R 31/08 (2020.01); G01R 27/28 (2006.01); H02H 1/00 (2006.01); G01R 31/00 (2006.01)
CPC G01R 27/28 (2013.01) [G01R 31/001 (2013.01); G01R 31/085 (2013.01); G01R 31/086 (2013.01); H02H 1/0015 (2013.01)] 52 Claims
OG exemplary drawing
 
1. A computerized method of detecting hazardous electrical discharge activity patterns in electrical wiring, the method comprising:
sensing, by one or more sensor devices coupled to a circuit, a multiple voltage cycle waveform generated by electrical activity on the circuit;
detecting, by a computing device, a pattern of electrical discharge activity occurring in the multiple voltage cycle waveform based upon transient characteristics of the waveform in each of a plurality of cycles;
recognizing, by the computing device, the pattern of electrical discharge activity as a hazard event;
identifying, by the computing device, one or more conditions related to the pattern of electrical discharge activity; and
generating, by the computing device, one or more alert messages based upon the pattern of electrical discharge activity and the identified conditions.