基于USB的电磁超声数据采集及分析系统的设计

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)

详细信息

Design of Electromagnetic Acoustic Data Acquisition and Analysis System Based on USB

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。
- 电磁超声检测 /
- 数据采集及分析 /
- 系统设计
Abstract: Aiming at weakness and diversity characteristics of electromagnetic acoustic signals and demand of 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.
- Electromagnetic acoustic testing /
- Data acquisition and analysis /
- System design

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