| 基于LabVIEW的远场涡流管道检测系统 |
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| 引用本文： | 杨理践,刘健,高松巍.基于LabVIEW的远场涡流管道检测系统[J].无损检测,2011(8):38-41. |
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| 作者姓名： | 杨理践 刘健 高松巍 |
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| 作者单位： | 沈阳工业大学信息科学与工程学院; |
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| 基金项目： | 国家自然基金仪表专项资助项目(60927004) |
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| 摘 要： | 为了提高管道无损检测的精度，实现管道内外壁缺陷的检测，采用远场涡流的检测方法，依据检测线圈接收到的信号是激励线圈产生磁场两次穿过管壁后的信号，携带了管壁内外缺陷信息的原理，设计了远场涡流传感器、检测信号处理电路。对检测线圈接收信号进行放大、滤波处理，信号采集；采用LabVIEW编程计算检测信号幅值，互相关算法计算检测信号相位，确定缺陷深度。对内径36mm的有伤管道进行了试验。结果表明，所设计的仪器能检测出管道上深度为0．5mm及以上缺陷。利用LabVIEW对相位差计算提高了检测精度，为实际应用提供参考。
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| 关 键 词： | 远场涡流 管道内检测 互相关算法 带通滤波 管壁缺陷 |
Inspection System of Pipeline by Remote Field Eddy Current Based on LabVIEW |
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| YANG Li-Jian,LIU Jian,GAO Song-Wei.Inspection System of Pipeline by Remote Field Eddy Current Based on LabVIEW[J].Nondestructive Testing,2011(8):38-41. |
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| Authors: | YANG Li-Jian LIU Jian GAO Song-Wei |
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| Affiliation: | YANG Li-Jian,LIU Jian,GAO Song-Wei (School of Information Science and Engineering,Shenyang University of Technology,Shenyang 110870,China) |
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| Abstract: | In order to improve the accuracy of pipe nondestructive testing and to achieve the defect detection of pipe outer wall,the remote field eddy current detection method was used.Based on that the received signal of detection coil was produced by the magnetic field of exciting coil twice through the wall,which was carrying on the information of internal and external wall defect,the remote field eddy current sensor and the signal processing circuit were designed.After being amplified and filtered,the received si... |
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| Keywords: | Remote field eddy current Pipeline testing Cross-correlation algorithm Band-pass filter Wall defects |
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