Pipeline detection method and system

Abstract

The invention discloses a pipeline detection method and system, and the method comprises a step: enabling a signal receiving and transmitting device comprising a signal transmitting device and at least one signal receiving device to move in a preset to-be-detected region, wherein the signal transmitting device transmits a low-frequency AC signal in a movement process, and the signal receiving device receives the low-frequency AC signal in real time in the movement process, and transmits the low-frequency AC signal to a corresponding signal processing unit; The signal transmitting device comprises two signal transmission terminals which are respectively connected with two electrodes of a low-frequency AC signal source. Each signal receiving device comprises two signal receiving terminals, and the two signal receiving terminals are symmetrically placed between the two signal transmitting terminals and at two sides of a perpendicular bisector of the two signal transmitting terminals. The signal processing unit obtains a low-frequency processing signal according to a low-frequency sensing signal, and transmits the low-frequency processing signal to a central data processing unit. The central data processing unit obtains the direction and depth of a pile according to the intensity of the low-frequency processing signal. The method causes no damage during the detection of the pipe, and is high in accuracy.

Description

technical field [0001] The invention relates to the technical field of underground pipeline detection, in particular to a pipeline detection method. The invention also relates to a pipeline detection system. Background technique [0002] With the acceleration of the urbanization process, urban construction needs to be transformed in many places, including the transformation of underground works, in which it is usually necessary to excavate the ground for operation. Due to the complex pipeline network system underground in the city, if the pipeline facilities are damaged during the construction process, it will affect the smooth progress of related work, and may even cause incalculable economic losses. Therefore, before the underground engineering is transformed, the position of the underground pipeline needs to be detected first. [0003] At present, common pipeline detection methods include ground penetrating radar (GPR), acoustic wave detection, active electromagnetic fi...

AI Technical Summary

Problems solved by technology

[0006] The active electromagnetic field method is similar to the acoustic wave detection method, but the active electromagnetic field method can also use the inductive method to send signals, but the active electromagnetic field method can only be used to detect metal pipes

In addition, both the acoustic wave detection method and the active electromagnetic field method need to find a bare pipeline before detection, that is, these two methods are all contact detection methods, so they may cause certain damage to the pipeline

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