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:
Nov. 23, 2021
Filed:
May. 23, 2019
Tdw Delaware, Inc., Wilmington, DE (US);
Roger L. Poe, Beggs, OK (US);
TDW Delaware, Inc., Wilmington, DE (US);
Abstract
A system and method for detecting passage of a pipeline pig, the system and method including a passive impulse detector [] having a housing []; a non-intrusive connection [] of the housing to an exterior wall [] of a pipeline [P], at least one vibration sensor [] housed by the housing; and signal processing [] including at least one band pass filter [] configured to receive data collected by the vibration sensor, the vibration sensor and band pass filter configured to monitor frequencies in a predetermined range indicating the impulse. The selected frequencies should be those more easily detectable above the baseline (signature or natural resonance) frequency of the section of pipeline being monitored. In some embodiments, the selected frequencies are lower frequencies. No portion of the passive pipeline pig signal intrudes into an interior of the pipeline.