【摘要】 多通道虚拟超声检测系统由计算机、３块ＰＣ插卡（多通道超声发射／接收卡、超声图像卡与步进电机驱动卡）、聚焦探头和机械系统组成，能够实现Ａ、Ｂ、Ｃ扫描成像，数据处理，缺陷定位，定性和定量分析．将计算机技术、虚拟仪器技术、信号和图像处理技术引入超声无损检测领域，拓宽了传统超声检测的应用范围．该系统采用多通道扫描成像，大大提高了系统检测效率，与传统超声成像系统相比具有检测效率高、精度高、功能强、体积小、参量可用软件调节等优点更多还原

【Abstract】 The multi channel virtual ultrasonic testing system uses three PC cards. They consist of the multi channel ultrasonic transmit/receive card, ultrasonic graphic card, and step motor drive card. The A,B,C scan and data processing can be implemented. Virtual instrument and signal image process technology are introduced for ultrasonic nondestructive testing (NDT),while the range of applicability for traditional ultrasonic testing is extended. Other improvements include test efficiecy, precision, and software for the adjustment of governing parameters.更多还原