Pipeline abnormal collision two-dimensional positioning method and system based on constrained inversion

A two-dimensional positioning and constrained inversion technology, applied in positioning, radio wave measurement systems, measurement devices, etc., can solve the problems of high cost of sensors, inability to detect acoustic signals, and rough positioning methods of regional positioning methods to reduce costs, Effectiveness of reliable methods and techniques

Active Publication Date: 2018-11-13
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.

Method used

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  • Pipeline abnormal collision two-dimensional positioning method and system based on constrained inversion
  • Pipeline abnormal collision two-dimensional positioning method and system based on constrained inversion
  • Pipeline abnormal collision two-dimensional positioning method and system based on constrained inversion

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings. The present invention provides a two-dimensional positioning method for pipeline abnormal collisions based on constraint inversion, as shown in 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 group of sensor arrays is composed of N sensors, wherein, N≥4;

[0031] Specific as figure 2 As shown, when N is 4, the schematic diagram of the sensor array, figure 2 The left picture in the center 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 ge...

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Abstract

The invention provides a pipeline abnormal collision two-dimensional positioning method and system based on constrained inversion. The pipeline abnormal collision two-dimensional positioning system based on constrained inversion arranges sensor arrays in a circumferential direction of a pipeline to receive an acoustic wave signal generated from abnormal collision, unfolds a cylindrical coordinatesystem pipeline model to convert the cylindrical coordinate system pipeline model into a plane coordinate system, so as to construct an inversion objective function with a constraint factor, and usesleast square constrained inversion to realize critical two-dimensional positioning of abnormal collision in petroleum and natural gas pipeline transportation. The pipeline abnormal collision two-dimensional positioning method based on constrained inversion can provide reliable method and technique for quickly realizing collision positioning of the pipeline of petroleum and natural gas, and can greatly reduce the cost of abnormal collision detection.

Description

technical field [0001] The present invention relates to the technical field of locating abnormal collisions of oil and gas pipelines, in particular to a two-dimensional positioning method and system for abnormal collisions 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 pipelines are buried in complex environments such as the field or underground, and are easily damaged by impacts such as falling rocks and mudslides, and leakage accidents often occur when impacts are severe. The medium transported in pipelines is usually very dangerous and polluting. Once a leak occurs, it will not only cause major economic losses, but more seriously, it will cause major dangers to people's lives and production activities. Therefore, rapid detection and positioning of pipelines The location of abnormal collision has very important academic and application value. ...

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Application Information

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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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