公开(公告)号：US20240219311A1

公开(公告)日：2024-07-04

申请号：US18329804

申请日：2023-06-06

Applicant: Tsinghua University

Inventor： Songling Huang ,  Lisha Peng ,  Xinjie Yu ,  Jinghua Zhang ,  Shisong Li ,  Shuzhi Wen

IPC: G01N21/88 ,  G01N21/93 ,  G01N33/38

CPC classification number: G01N21/8851 ,  G01N21/93 ,  G01N33/383 ,  G01N2021/8861 ,  G01N2021/8877 ,  G01N2201/12723

Abstract: The disclosure provides a system for electromagnetic monitoring of active cracks in a concrete dam. The system includes at least four electromagnetic signal acquisition devices and a main control module. Each electromagnetic signal acquisition device includes: an electromagnetic monitoring sensor, an electromagnetic signal acquisition module, a power supply module and a first wireless communication module, for collecting and extracting electromagnetic radiation signals generated by the active cracks in the concrete dam. The main control module includes: a second wireless communication module, a CPU, a data storage unit and a data display unit, for processing the electromagnetic radiation signals received by the second wireless communication module, positioning locations of the active cracks and quantifying sizes of the active cracks.

公开(公告)号：US11099156B2

公开(公告)日：2021-08-24

申请号：US16403990

申请日：2019-05-06

Applicant: Tsinghua University

Inventor： Songling Huang ,  Wei Zhao ,  Shen Wang ,  Xinjie Yu ,  Lisha Peng ,  Jun Zou ,  Fuping Wang ,  Jiarui Dong ,  Lin Gui ,  Yue Long

IPC: G01N27/83 ,  G01N17/00 ,  G01N27/02 ,  G01N27/90

Abstract: The present disclosure provides a method and a device for detecting and evaluating a defect with electromagnetic multi-field coupling. The method includes magnetizing a pipeline with the electromagnetic multi-field coupling; detecting a defect of the pipeline along an axial direction of the pipeline at a constant speed; collecting signals at a position of the defect to obtain magnetic leakage signals in three dimensions and an electrical impedance signal; pre-processing the collected signals; decoupling the pre-processed signals, to obtain decoupled magnetic leakage signals and a decoupled electrical impedance signal; performing impedance analysis on the decoupled electrical impedance signal, and determining a type of the defect based on a phase angle of the decoupled electrical impedance signal; and performing quantification analysis on the decoupled magnetic leakage signals and performing quantification evaluation on a size of the defect using a neural network defect quantification method.

公开(公告)号：US20190004124A1

公开(公告)日：2019-01-03

申请号：US15840650

申请日：2017-12-13

Applicant: Tsinghua University

Inventor： Songling HUANG ,  Wei Zhao ,  Shen Wang ,  Lisha Peng ,  Yu Zhang ,  Xinjie Yu ,  Jun Zou ,  Lin Gui ,  Fuping Wang

IPC: G01R33/09 ,  F17D5/06

CPC classification number: G01R33/091 ,  F17D5/06 ,  G01M3/40 ,  G01R33/098

Abstract: A high-precision imaging and detecting device for detecting a small defect of a pipeline by a helical magnetic matrix. The device includes: a helical excitation module including a helical excitation coil; a magnetic matrix detection module, disposed at an inner side of the helical excitation coil and including at least one magnetic sensor group arranged at intervals along an axial direction of the helical excitation coil, group including a plurality of magnetic sensors evenly spaced apart and arranged along a circumferential direction of the helical excitation coil, and the magnetic sensor being configured to detect an induction magnetic field of the pipeline; a signal processing module, connected with the magnetic matrix detection module, and configured to receive, process and output an induction magnetic field signal of the pipeline detected by the magnetic sensor.

公开(公告)号：US10788454B2

公开(公告)日：2020-09-29

申请号：US16044590

申请日：2018-07-25

Applicant: Hubei University of Technology ,  Tsinghua University

Inventor： Songling Huang ,  Xiaochun Song ,  Lisha Peng ,  Wei Zhao ,  Shen Wang ,  Xinjie Yu ,  Shisong Li

IPC: G01N27/83

Abstract: A method for identifying a defect opening profile includes: acquiring a vertical component of a magnetic flux leakage signal of a defect; identifying right-angle features and corresponding right-angle position points of the defect from the vertical component; obtaining all possible right-angle types at each right-angle position point of the defect according to the corresponding right-angle feature of the vertical component; traversing all the possible right-angle types at each right-angle position point to determine respective optimal right-angle type at each right-angle position point; and drawing the defect opening profile according to the respective optimal right-angle type at each right-angle position point.

公开(公告)号：US10338160B2

公开(公告)日：2019-07-02

申请号：US15840650

申请日：2017-12-13

Applicant: Tsinghua University

Inventor： Songling Huang ,  Wei Zhao ,  Shen Wang ,  Lisha Peng ,  Yu Zhang ,  Xinjie Yu ,  Jun Zou ,  Lin Gui ,  Fuping Wang

IPC: G01R33/09 ,  F17D5/06 ,  G01M3/40

Abstract: A high-precision imaging and detecting device for detecting a small defect of a pipeline by a helical magnetic matrix. The device includes: a helical excitation module including a helical excitation coil; a magnetic matrix detection module, disposed at an inner side of the helical excitation coil and including at least one magnetic sensor group arranged at intervals along an axial direction of the helical excitation coil, group including a plurality of magnetic sensors evenly spaced apart and arranged along a circumferential direction of the helical excitation coil, and the magnetic sensor being configured to detect an induction magnetic field of the pipeline; a signal processing module, connected with the magnetic matrix detection module, and configured to receive, process and output an induction magnetic field signal of the pipeline detected by the magnetic sensor.

公开(公告)号：US10030804B2

公开(公告)日：2018-07-24

申请号：US14759300

申请日：2014-09-16

Applicant: Tsinghua University

Inventor： Songling Huang ,  Wei Zhao ,  Shen Wang ,  Xinjie Yu ,  Junjie Chen ,  Zheng Wei

IPC: G01M3/40 ,  G01N27/82 ,  F16L11/08 ,  F16L55/38 ,  F16L101/30

CPC classification number: F16L55/38 ,  F16L2101/30 ,  G01M3/40 ,  G01N27/82

Abstract: An inner detecting device for subsea oil and gas pipeline includes a support shaft defining a sealed chamber therein; a packer cup coupled to the support shaft; a hinge assembly coupled to the support shaft, swinging with respect to the support shaft in a radial direction and sliding with respect to the support shaft in an axial direction; a magnetic detector connected to the hinge assembly to move with respect to the support shaft in the radial and axial directions, and the magnetic detector tending to move away from the support shaft in the radial direction; a battery pack; an electric recorder electrically connected to the battery pack; and a mileage recorder recording a travel distance of the inner detecting device within the pipeline.