System and method of remote monitoring of the integrity of pressurized pipes by means of vibroacoustic sources

A system of monitoring a pipe for the transportation of a fluid at a predefined pressure value (P), the system comprising:

• at least one pressure pulses generator device hydraulically connected to the fluid transported by the pipe, wherein each pressure pulses generator device comprises:
• at least one first tank designed to contain a first predefined quantity of fluid coming from the pipe and designed to maintain the first predefined quantity of fluid at a first pressure value (P1) which is smaller than the predefined pressure value (P) of the fluid transported by the pipe;
• at least one second tank designed to contain a predefined quantity of fluid coming from the pipe and designed to maintain the second predefined quantity of fluid at a second pressure value (P2) which is greater than the predefined pressure value (P) of the fluid transported by the pipe, wherein the first tank and the second tank generate respectively a negative pressure pulse, caused by the passage of fluid from the pipe to the first tank, and a positive pressure pulse, caused by the passage of fluid from the second tank to the pipe;
• and
• at least one transducer interposed between the pipe and the first and second tanks, the at least one transducer comprises a pressure transducer and a plurality of solenoid valves designed to control movement of the fluid in the pipe to the first tank and the second tank, the at least one transducer is designed to measure the first and second pressure values of the fluid in the first tank and the second tank, and the at least one transducer is designed to control the plurality of solenoid valves to generate the first and second pressure pulses to code the first pressure pulse and the second pressure pulse into recorded acoustic signals (s(t)), and
• at least one measurement station placed along the pipe and provided with one or more vibroacoustic sensors configured to record acoustic signals (sA(t), sB(t)) generated by the at least one pressure pulses generator device.