A pulse eddy current signal processing method for detecting residual wall thickness of a pipeline under thermal insulation layer

CN122192142APending Publication Date: 2026-06-12JIANGXI BUSBAR NEW ENERGY TECH CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: JIANGXI BUSBAR NEW ENERGY TECH CO LTD
Filing Date: 2026-05-07
Publication Date: 2026-06-12

AI Technical Summary

⚠Technical Problem

When using pulsed eddy current technology to detect the remaining wall thickness of pipes with insulation layers, the existing technology directly uses full-cycle signal calculations, which introduces interference data and affects the reliability and accuracy of the detection results.

⚗Method used

By identifying the stable phase of the pulsed eddy current induced voltage time-domain signal, the effective voltage dataset is extracted, and anti-interference characteristic voltage is extracted. Combined with probe lift-off height matching and calibration dataset, the pipe wall thickness reduction is calculated, and finally the remaining pipe wall thickness data is generated.

🎯Benefits of technology

It improves the reliability and accuracy of wall thickness detection, and can adaptively match the detection environment under different working conditions, thereby enhancing the adaptability and accuracy of the detection.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The application relates to the technical field of pipeline nondestructive testing, and discloses a pulse eddy current signal processing method for detecting the residual wall thickness of a pipeline under a thermal insulation layer, which comprises the following steps: collecting a pulse eddy current induced voltage time domain signal of a pipeline with a thermal insulation layer; performing detection and stable stage identification processing on the pulse eddy current induced voltage time domain signal to generate pipeline wall thickness detection stable stage identification data; extracting an effective voltage data set from the pulse eddy current induced voltage time domain signal based on the pipeline wall thickness detection stable stage identification data; and extracting effective information capable of truly reflecting the pipeline wall thickness characteristics from the original time domain signal by performing detection and stable stage identification on the pulse eddy current induced voltage time domain signal and extracting the effective voltage data set based on the same, so that the stability and representativeness of the data source for subsequent wall thickness calculation are ensured, and the reliability of the wall thickness detection is improved.

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