Detecting method for blocking failure of water drainage pipeline

Abstract

The invention discloses a detecting method for blocking failure of a water drainage pipeline. The detecting method for blocking failure of the water drainage pipeline comprises the following steps that a detecting device for the blocking failure of the water drainage pipeline is installed; a known pipeline failure-free section / a pipeline failure section are selected for detecting, and signals under two working conditions are obtained by a computer from the receiving end; acoustic response signals of the water drainage pipeline under the two working conditions are obtained; SVD is conducted on the acoustic response signals; an energy entropy index and an approximate entropy index are extracted; the extraction results of the two indexes are merged as a initial eigenvector set; a within-class discrete matrix and a between-class discrete matrix are obtained by using a distance separable criterion method for an obtained energy entropy eigenvector set, an approximate entropy eigenvector set and the initial eigenvector set; the weight of the energy entropy index and the approximate entropy index are calculated; all the eigenvector sets are weighted to obtain a new eigenvector set; a random forest classifier is trained with the eigenvector set, and a failure identification model is obtained. According to the detecting method for blocking failure of the water drainage pipeline, accuracy and reliability of the detecting result are improved.

Description

technical field [0001] The invention relates to a detection method for blockage faults of drainage pipes, which belongs to the field of detection of pipe faults. Background technique [0002] The level of urbanization in my country is constantly improving. With the development of urban economy, the length of drainage pipes shows a trend of accelerated growth every year. However, due to defects in the original design or long-term use, the failure rate of drainage pipes is also very high. Among them, the blockage of pipelines is a hidden danger that threatens the safe drainage of cities. If pipeline failures cannot be detected and eliminated in time, the normal operation of urban water supply and drainage will be affected. Therefore, an efficient and accurate detection method for drainage pipe blockage is very necessary for pipeline fault detection. Contents of the invention [0003] In order to solve the problem of detection of drainage pipe blockage faults, the present in...

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Problems solved by technology

[0003] In order to solve the problem of fault detection of drainage pipe blockage, the present invention provides a detection method for drainage pipe blockage fault

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