| 远场涡流法套损测试仪中信号检测系统的研制 |
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| 引用本文： | 刘亮,师奕兵,王志刚.远场涡流法套损测试仪中信号检测系统的研制[J].测控技术,2012,31(3):40-43. |
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| 作者姓名： | 刘亮 师奕兵 王志刚 |
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| 作者单位： | 电子科技大学 自动化工程学院;电子科技大学 自动化工程学院;电子科技大学 自动化工程学院 |
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| 基金项目： | 中海油服企业发展基金资助项目(1017CS-A01C234) |
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| 摘 要： | 分析了远场涡流套损检测中检测信号特点，给出了一种以数字相敏检波(DPSD)算法为核心的应用于远场涡流套损测试仪中的信号检测系统。通过分析整个测试系统的误差模型，给出了满足仪器测量精度要求的硬件电路设计及算法设计。实验结果表明，该系统很好地完成了信号幅度和相位差提取，为后期的缺陷识别及软件成像做好了充分的准备。
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| 关 键 词： | 信号检测 管道探伤 远场涡流 数字相敏检波 |
Development of Signal Detection in Casing Damage Tester Based on Remote Field Eddy Current Method |
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| LIU Liang,SHI Yi-bing,WANG Zhi-gang.Development of Signal Detection in Casing Damage Tester Based on Remote Field Eddy Current Method[J].Measurement & Control Technology,2012,31(3):40-43. |
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| Authors: | LIU Liang SHI Yi-bing WANG Zhi-gang |
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| Affiliation: | (School of Automation,University of Electronic and Technology of China,Chengdu 611731,China) |
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| Abstract: | The signal feature in remote field eddy current (RFEC) test is analyzed and a signal detection system based on DPSD algorithm for RFEC test is given.The hardware structure and design of algorithm met the required measurement precision is presented by studying the error module of the testing system.Experimental results show that the system performs well in the signal amplitude and phase extraction to pass the way for later defect recognition and software imaging. |
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| Keywords: | signal detection pipe flaw detection remote field eddy current digital phase sensitivity detection |
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