A design method of ultrasonic guided wave test system for pipe was proposed based on a piece of FPGA chip,with the MicroBlaze soft core as the central processor. DDS IP was designed, devoted to excite guided wave. After hardware platform was designed, embedded operating system uC/OS II and graphical user interface uC/GUI were transplanted, and application was developed. The functions of ultrasonic guided wave eradiating,echoes acquisition,data analysis,result display,and data storage were included in the system. The experiment results show that all parts can operate normally, and can be conveniently applied to ultrasonic guided wave inspection in pipes.%针对国内超声导波检测仪器相对落后的现状,提出了基于单片FPGA设计管道超声导波检测系统的方法.以MicroBlaze软核处理器为控制核心,编写了导波发射专用DDS IP核,设计了完整的硬件平台.对uC/OSⅡ嵌入式操作系统和uC/GUI图形用户界面进行移植,完成了应用程序的开发.系统集导波发射、回波采集、分析处理、实时显示和数据存储等功能于一身.实验表明:各功能运行正常,能方便地应用于管道超声导波检测.
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