| 基于LabVIEW的涡流检测系统研制 |
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| 引用本文： | 李运飞,陈以方.基于LabVIEW的涡流检测系统研制[J].无损检测,2009,31(2):96-98. |
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| 作者姓名： | 李运飞 陈以方 |
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| 作者单位： | 清华大学机械工程系,北京,100084
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| 摘 要： | 针对传统涡流检测仪器硬件复杂、成本较高的缺点，采用虚拟仪器技术，研制了一套基于LabVIEW的涡流无损检测系统。系统由涡流检测硬件电路、上位计算机、数据采集卡以及相关软件组成。重点介绍了硬件电路中的激励源、自动平衡电路和相敏检波模块的设计。系统完成后，对圆管管壁通孔和钢条裂纹进行了检测试验。检测结果表明系统具备良好的检测性能。
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| 关 键 词： | 涡流检测 直接数字频率合成 自动平衡 相敏检波 |
Development of LabVIEW Based Eddy Current Testing System |
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| LI Yun-Fei,CHEN Yi-Fang.Development of LabVIEW Based Eddy Current Testing System[J].Nondestructive Testing,2009,31(2):96-98. |
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| Authors: | LI Yun-Fei CHEN Yi-Fang |
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| Affiliation: | (NDT Lab, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China) |
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| Abstract: | Directing against the disadvantage of the complicated hardware and high cost of traditional eddy current testing instrument, a LabVIEW based eddy current testing system was developed. The system was composed of hardware circuit, computer, data acquisition card and relative software. The design of the carrier frequency generator, auto-balance circuit and the phase-sensitive detector was introduced in detail. Testing experiments were done using the system, and the results showed that the system had good testing capability. |
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| Keywords: | Eddy current testing Direct digital synthesis Auto-balance Phase-sensitive detector |
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