Non-invasive pipeline pig signal detection using vibration sensors

A system and method for detecting passage of a pipeline pig, the system and method including a passive impulse detector (10) having a housing (13); a non-intrusive connection (15) of the housing to an exterior wall (17) of a pipeline (P), at least one vibration sensor (11) housed by the housing,; an...

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Bibliographic Details
Main Author POE, Roger L
Format Patent
LanguageEnglish
Published 22.08.2024
Subjects
MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES
MEASURING
PHYSICS
TESTING
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Summary:A system and method for detecting passage of a pipeline pig, the system and method including a passive impulse detector (10) having a housing (13); a non-intrusive connection (15) of the housing to an exterior wall (17) of a pipeline (P), at least one vibration sensor (11) housed by the housing,; and signal processing (23) including at least one band pass filter (27) 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.
Bibliography:Application Number: AU20190274601