| 基于USB的电磁超声数据采集及分析系统的设计 |
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| 引用本文： | 汪开灿,康磊,翟国富,王淑娟.基于USB的电磁超声数据采集及分析系统的设计[J].无损检测,2010(10):825-828. |
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| 作者姓名： | 汪开灿 康磊 翟国富 王淑娟 |
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| 作者单位： | 哈尔滨工业大学军用电器研究所,哈尔滨150001 |
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| 基金项目： | 基金项目：铁道部科技研究开发计划重点课题资助项目（2009G018-E）;国防科技工业技术基础科研项目（B1220102302） |
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| 摘 要： | 针对电磁超声信号的微弱性、多样性特点以及电磁超声系统的便携式检测需求,设计了基于USB的电磁超声数据采集及分析系统。该系统通过USB实现上位机与采集电路的数据交换,采用FPGA实现电磁超声发射/接收电路控制和数据采集,并利用LabWindows CVI编写了上位机软件。试验表明,系统具有较高的采样速率和采样精度,使用方便灵活,具有广阔的应用前景。
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| 关 键 词： | 电磁超声检测 数据采集及分析 系统设计 |
Design of Electromagnetic Acoustic Data Acquisition and Analysis System Based on USB |
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| WANG Kai-Can,KANG Lei,ZHAI Guo-Fu,WANG Shu-Juan.Design of Electromagnetic Acoustic Data Acquisition and Analysis System Based on USB[J].Nondestructive Testing,2010(10):825-828. |
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| Authors: | WANG Kai-Can KANG Lei ZHAI Guo-Fu WANG Shu-Juan |
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| Affiliation: | (Military Apparatus Research Institute, Harbin Institute of Technology, Harbin 150001, China) |
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| Abstract: | Aiming at weakness and diversity characteristics of electromagnetic acoustic signals and demand ot portable electromagnetic acoustic inspection system, an electromagnetic acoustic data acquisition and analysis system was designed. Data exchange between computer and acquisition circuits was realized through USB. Controls of electromagnetic acoustic transmit/receive circuits and acquisition of echo data were implemented utilizing FPGA. Software was developed by LabWindows CVI. Experiment showed that the system not only had comparatively high sampling rate and accuracy, but was also easy to use. |
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| Keywords: | Electromagnetic acoustic testing Data acquisition and analysis System design |
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