	US 11,668,621 B2
	Method and system for inspecting and detecting fluid in a pipeline
Arijit Sinharay, Kolkata (IN); Gitesh Kulkarni, Bangalore (IN); Abhijeet Gorey, Kolkata (IN); Chirabrata Bhaumik, Kolkata (IN); Tapas Chakravarty, Kolkata (IN); and Arpan Pal, Kolkata (IN)
Assigned to Tata Consultancy Services Limited, Mumbai (IN)
Filed by Tata Consultancy Services Limited, Mumbai (IN)
Filed on Nov. 1, 2021, as Appl. No. 17/453,031.
Prior Publication US 2022/0136924 A1, May 5, 2022
Int. Cl. G01M 3/24 (2006.01); F17D 5/06 (2006.01); G01S 19/01 (2010.01)

CPC G01M 3/243 (2013.01) [G01S 19/01 (2013.01)]

14 Claims

1. A processor implemented method for inspecting and detecting fluid leakage in a pipeline, comprising:

capturing vibration signals from a first vibration sensor, a second vibration sensor, a third vibration sensor, and a fourth vibration sensor, wherein

the first vibration sensor is installed at a first location on the pipeline,

the second vibration sensor is installed at a second location on the pipeline,

the first location and the second location are two ends of a segment of a plurality of segments of the pipeline,

the plurality of segments is distributed along a length of the pipeline at an equal distance from each other,

the third vibration sensor is installed at a first location on a ground, and

the fourth vibration sensor is installed at a second location on the ground;

capturing negative pressure wave signals generated due to leakage in the pipeline using a first pressure sensor and a second pressure sensor, wherein

the first pressure sensor is installed at the first location on the pipeline, and

the second pressure sensor is installed at the second location on the pipeline;

calculating, via one or more hardware processors, a first signal as a difference between signals captured from the first vibration sensor and the third vibration sensor present at the first location;

calculating, via the one or more hardware processors, a second signal as a difference between signals captured from the second vibration sensor and the fourth vibration sensor present at the second location;

calculating, via the one or more hardware processors, a third signal as a difference between signals captured from the first pressure sensor and the third vibration sensor;

calculating, via the one or more hardware processors, a fourth signal as a difference between signals captured from the second pressure sensor and the fourth vibration sensor;

digitizing, via the one or more hardware processors, the first signal, the second signal the third signal, and the fourth signal along with a global positioning system (GPS) time stamping;

extracting, via the one or more hardware processors, a plurality of features from a one-minute time window of each of the first signal, the second signal, the third signal, and the fourth signal;

selecting, via the one or more hardware processors, a set of features out of the plurality of features using a feature selection algorithm, wherein the set of features are selected based on a user defined condition;

providing, via the one or more hardware processors, the selected set of features to a pre-generated classifier model, wherein the pre-generated classifier model is generated by simulating a normal condition, a leakage condition, and a theft condition; and

detecting, via the one or more hardware processors, at least one of the normal condition, the leakage condition in the pipeline, and the theft condition in the pipeline using the pre-generated classifier model.