对基于 PC的管道环焊缝超声检测系统实时性进行全面的分析研究 ,从软件和硬件两方面确定了解决系统实时性的几种途径 ,开发了 Windows环境下的系统实时控制软件及运动控制软件 ,并设计实验验证了系统实时性设计的有效性 Based on PC, the real-time analysis of pipeline girth weld ultrasonic testing system is carried out. From software and hardware, several ways to solve the real-time of the system are determined. The system real-time control software and motion control software , And the design experiment verifies the validity of real-time system design