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.

Date of Patent:
Jan. 06, 2026

Filed:

Aug. 18, 2022
Applicant:

Network Integrity Systems, Inc., Hickory, NC (US);

Inventors:

Cary R. Murphy, Hickory, NC (US);

Daniel M. Goertzen, Winnipeg, CA;

Mark K. Bridges, Hickory, NC (US);

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V 1/36 (2006.01); G01V 1/00 (2024.01); G01V 1/22 (2006.01);
U.S. Cl.
CPC ...
G01V 1/36 (2013.01); G01V 1/001 (2013.01); G01V 1/226 (2013.01);
Abstract

A method is provided for analyzing a monitoring signal from a sensing system to determine an alarm condition, where the monitoring signal is provided as a stream of digital values which are analyzed using a frequency-based transform to generate a set of transform coefficients which are compared to a set of envelope coefficients. The sensitivity of the analysis is automatically controlled to accommodate environmental noise on the fiber by increasing the envelope coefficients to make the analysis less sensitive at each cycle by adopting the larger value from the comparison and by decaying the envelope coefficients at each cycle over time to a smaller value down to a floor value.


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