The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2017
Filed:
Nov. 18, 2016
Applicant:
Livewire Innovation, Inc., South Jordan, UT (US);
Inventors:
Lee Arthur Watkins, Thousand Oaks, CA (US);
Niall Michael McNamara, Santa Barbara, CA (US);
Assignee:
LiveWire Innovation, Inc., South Jordan, UT (US);
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/11 (2006.01); G01R 31/02 (2006.01); G01R 31/08 (2006.01); G01R 31/28 (2006.01);
U.S. Cl.
CPC ...
G01R 31/11 (2013.01); G01R 31/021 (2013.01); G01R 31/08 (2013.01); G01R 31/086 (2013.01); G01R 31/2879 (2013.01);
Abstract
There are disclosed apparatus and methods for testing a live circuit powered from an alternating current (AC) voltage. A zero crossing detector detects zero crossings of the AC voltage. A spread spectrum time domain reflectometer (SSTDR) coupled to the zero crossing detector performs measurements of the live circuit, each measurement synchronized with a zero crossings of the AC voltage. A processor coupled to the SSTDR detects faults in the live circuit based on correlation data provided by the SSTDR.