G - Physics – 01 – S
Patent
G - Physics
01
S
349/35
G01S 5/18 (2006.01) G01H 1/00 (2006.01) G01N 29/14 (2006.01)
Patent
CA 1224867
ABSTRACT Provided is apparatus suitable for continuous long-term monitoring of acoustic emissions, particularly from large structures such as pipelines. The apparatus comprises a plurality of detector-analyzer units coupled to a central control unit via a communications link. Each detector-analyzer unit comprises an acoustic detector, signal processing means, and a microprocessor. Preferably, the signal processing means comprises at least one signal conditioner, and at least one measuring circuit which provides digital output signals representing a set of emission parameters. The microprocessor preferably periodically receives and compares the digital output signal representing each of the emission parameters with the base values thereof, and provides a warning signal if a problem situation is perceived as a result of such comparison.
469663
Bassim M. Nabil
Tangri Kris
Sim & Mcburney
University Of Manitoba (the)
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