A two-dimensional localization method and system for abnormal collision of pipelines based on constraint inversion

A two-dimensional positioning and constrained inversion technology, applied in positioning, radio wave measurement systems, instruments, etc., can solve the problems of high cost of sensors, inability to detect acoustic signals, and rough positioning methods of regional positioning methods, and achieve cost reduction and reliability. Effects of methods and techniques

Active Publication Date: 2022-07-05
YANGTZE UNIVERSITY
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Problems solved by technology

The regional positioning method is a relatively rough positioning method, and it cannot detect all acoustic signals, and the cost of sensors is relatively high. If there are more layouts, the cost will also increase, and it is not the best choice from an economic point of view.

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  • A two-dimensional localization method and system for abnormal collision of pipelines based on constraint inversion
  • A two-dimensional localization method and system for abnormal collision of pipelines based on constraint inversion
  • A two-dimensional localization method and system for abnormal collision of pipelines based on constraint inversion

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Embodiment Construction

[0029] The present invention is described in further detail below with reference to the accompanying drawings. The present invention provides a two-dimensional positioning method for abnormal collision of pipelines based on constraint inversion, such as figure 1 As shown, the method includes the following steps:

[0030] S1. Arrange the sensor array R in the circumferential direction of the pipeline ij (i=1, 2; j=1, . . . , N), each sensor array consists of N sensors, where N≥4;

[0031] Specifically as figure 2 shown, when N is 4, the schematic diagram of the sensor array, figure 2 The middle left picture is a three-dimensional view of the pipeline, and the right picture is a cross-sectional view of the pipeline.

[0032] S2, according to the acoustic wave signal generated by the abnormal collision received by the sensor array in step S1, and calculate the arrival time t of each group of sensor arrays ij ;

[0033] S3. Convert the approximate geometric model of the pip...

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Abstract

The invention provides a two-dimensional positioning method and system for abnormal collision of pipelines based on constraint inversion. The system arranges a sensor array in the circumferential direction of the pipeline to receive the acoustic wave signals generated by the abnormal collision, and uses the cylindrical coordinate system pipeline model to expand and transform it into a plane coordinate system , and then construct the inversion objective function with constraint factors, and use the least squares constraint inversion to realize the two-dimensional positioning of the abnormal collision, which is very important in the transportation of oil and natural gas pipelines. The collision localization provides reliable methods and techniques that greatly reduce the cost of abnormal collision detection.

Description

technical field [0001] The invention relates to the technical field of locating abnormal collision of oil and gas pipelines, in particular to a two-dimensional locating method and system for abnormal collision of pipelines based on constraint inversion Background technique [0002] Oil and gas pipelines are often used to transport important resources such as oil and natural gas. Most of the pipelines are buried in complex environments such as the field or underground, and are easily damaged by impacts such as rockfalls and debris flows. The medium transported in the pipeline is usually very dangerous and polluting. Once leakage occurs, it will not only cause major economic losses, but also cause serious danger to people's life and production activities. Therefore, rapid detection and positioning of pipelines The abnormal collision position has very important academic and application value. [0003] At present, a large number of localization methods for abnormal collision o...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/22
CPCG01S5/22
Inventor 黑创罗明璋李修权陈宝
Owner YANGTZE UNIVERSITY
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