基于LabVIEW和Matlab混合编程的时反超声导波激励和采集系统设计  

Design of Time Reversal Guided Wave Excitation and Acquisition System Based on Lab VIEW and Matlab Mixed Programming

作　　者：王建斌[1] 杜云朋[1] 刘兵[1] 张轩硕[1,2] 

机构地区：[1]军械工程学院,石家庄050003 [2]驻南京地区军代室,南京210008

出　　处：《计算机测量与控制》2014年第3期959-961,共3页Computer Measurement &Control

摘　　要：基于LabVIEW图形化编程软件,并结合Matlab数值分析软件,对NEXTKIT信号万用仪以及NI PXI—6133数据采集卡进行了开发,实现了时间反转超声导波激励和采集以及信号处理系统设计,具有良好的用户界面和丰富强大的功能;实验结果表明:该系统完成了超声导波激励信号以及时间反转激励信号的生成,信号质量满足设计指标要求,缺陷回波信号相对幅值提高了500%,实现了对微小缺陷的检测,为系统的小型化打下坚实基础。This design using LabVIEW graphical programming software and combine Matlab numerical analysis software, NEXTKIT and NI PXI--6133 data acquisition card has been developed to achieve a time reversal ultrasonic guided wave excitation and acquisition and signal processing system design , has a good user interface and rich powerful features. The experimental results showed that： The system completed generation of guided wave excitation signal and the time--reversed excitation signal, signal quality to meet the design require- ments and the signal data processing, able to determine the presence or absence of defects, the defect echo signal of relative amplitude in- creased by 500%, the realization of small defects detection, and lay a solid foundation for system miniaturization.

关 键 词：LABVIEW Mtalab 超声导波 时间反转 缺陷 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]