A detection system for pipeline direction based on shielded geomagnetic field

Zhao, Wei; Huang, Xinjing; Chen, Shili; Zeng, Zhoumo; Jin, Shijiu

doi:10.1016/j.ijpvp.2013.11.001

Cited by 13 publications

(16 citation statements)

References 8 publications

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“…At the same time, related experiments are designed to prove the correctness of the simulation results. All the studies in this paper will play a theoretically fundamental role in guiding the design of the prototype of the detection device proposed and at the same time support the analytical study of the measured datum [6]. Figure 1, in the Cartesian coordinate system, the origin of the coordinate is at the center of the geometry.…”

Section: Introductionmentioning

confidence: 69%

“…Owing to the simplicity of the signal source and detection unit, magnetostatic detection has its unique advantages compared with other methods [4,5]. The magnetic anomaly detection (MAD) method is one of the methods for pig detection [4,6,7]. Magnetic anomaly detection methods began to emerge and develop in the 1990s [8].…”

Section: Introductionmentioning

confidence: 99%

“…Magnetic anomaly detection methods began to emerge and develop in the 1990s [8]. Currently, MAD is mainly based on the analysis of magnetic anomaly distribution within the measuring surface or measuring line [5,6,9,10], so as to identify and position a magnetic source such as the unexploded ordnance (UXO) [11], the underground pipeline [6,[12][13][14], and the underground iron wastes [15,16]. The parameters of the magnetic dipole are retrieved according to the magnetic properties of the magnetic dipole [17].…”

Section: Introductionmentioning

confidence: 99%

“…But the application in tracking of magnet-labeled pig in the pipeline is relatively rare to see. And the influences of pipeline geometries, pipeline permeability, and permanent magnet setup on magnetic anomaly fluctuations still remain to be further studied [6].…”

Section: Introductionmentioning

confidence: 99%

“…In order to verify the feasibility and effectiveness of the method which calculates the position of the pig by detecting the MF, a mathematical model is established based on a magnet-labeled pig [6,24]. The influencing factors of MF are fully analyzed.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Characteristic of Magnetic Fluctuation of Underground Passing Pig Labeled with Magnets

Guo

et al. 2019

Journal of Sensors

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During the pigging process, a pig labeled with magnets can be effectively detected by monitoring the magnetic fluctuation (MF) introduced when the pig passes by. In order to analyze the influence of various factors on the MF, the principle for magnetic fluctuation detection (MFD) is described, and a detection model is established here. The influence of model parameters, such as pipeline geometries, geomagnetic characteristics, as well as permeability of pipeline, on the magnetic anomaly distribution along the measured line is analyzed. The study reveals that with the increase in pipeline parameters (thickness, permeability, and outer diameter), the MF detected decreases. The pipeline length will have little influence on the MF. With an increased number of magnets, the MF increases while remaining almost unchanged at two ends of the measuring line. Attention should be paid to the installation of magnets to ensure the consistency of the magnetic moments. With the increase in geomagnetic intensity and declination, the MF will be almost unaffected, while the change of geomagnetic inclination will introduce an obvious change to the MF. In field application, measuring points can be set along and above the pipeline with a certain interval. From the magnetic anomaly measured, it can be determined whether the pig has passed by the point or not.

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Section: Introductionmentioning

confidence: 69%