相控阵超声成像检测技术在工业无损检测领域中的应用越来越广泛。其通过控制阵列探头中各个阵元激励脉冲的时间延迟，以实现聚焦点位置和声束方位的变化，从而合成相控阵波束，完成超声扫描成像。设计了超声发射接收电路，并通过超声标准试块验证单通道超声检测电路的可行性。根据设计要求，将单通道电路进行相应的扩展，可得到多通道相控阵超声检测电路并通过控制现场可编程门阵列(FPGA)实现检测。

Nowadays the ultrasonic phased array imaging detection technology has an increasingly wide application in the field of industrial non-destructive testing. By controlling the delay time of each element, the technology can change the location of the focus point and the direction of the beam and therefore form combined phased beam, complete ultrasonic scanning imaging .This paper studies the design of ultrasonic transmit-receive circuit. And use ultrasound test block is used to verify the feasibility of the single-channel ultrasonic testing circuit. The actual phased array ultrasonic detection circuit is a repeated combination of the single-channel circuit and the FPGA is then used to achieve detection.