| 摘要 |
A method and system for continuous remote monitoring of integrity of pressurized pipelines and properties of fluids transported, the method including: installing plural measurement stations along the pipeline, connected to vibroacoustic sensors configured to simultaneously and continuously measure elastic signals propagating in walls of the pipeline, and acoustic signals propagating in the transported fluid; synchronizing the signals measured from different measurement stations, with absolute time reference; continuously transmitting the measured and synchronized signals to a central unit configured to process them in a multichannel mode; calculating, by the central unit, plural transfer functions that can define vibroacoustic propagation in sections of pipeline between consecutive measurement stations; filtering relevant acoustic and elastic signals from the different measurement stations subtracting the contribution relating to the passive sources; creating an equivalent descriptive model of the system including the fluid transported, pipeline and external medium surrounding the pipeline, using the transfer functions. |
