中文摘要：

分析了线性排列超声换能器超声信号聚焦的延时算法,运用DSPBuilder将延时算法用软件加以描述并通过实验验证。提出了一种基于FPGA技术,VHDL语言描述的8通道超声相控阵系统接收装置的硬件设计方法,将延时运算部分与系统控制部分合为一体,实现延时算法与数据采集控制的单片集成,缩小了装置体积。以QuartusⅡ为开发平台,对装置各模块进行了时序与功能仿真。通过StratixⅡ系列FPGA的高速时钟运算,将延时分辨率提高到约2 ns.结果表明：运用先进的FPGA技术可同时实现算法与控制,节省硬件空间,运算更加精确,是实现多通道高速数据控制的新的有效思路。

英文摘要：

A time delay algorithm of linear array ultrasonic transducers was analyzed,which was described and validated with DSPBuilder.A design method of eightchannel ultrasonic phased arrays data acquisition system based on VHDL and FPGA was proposed and one-chip solution of intelligent control including algorithm and control come true.Time simulation and fuction simulation of the blocks were achieved by Quartus Ⅱ.Because of the high-speed clock of StratixⅡ FPGA,time delay resolution can be promoted to about 2 ns.The result shows that incorporating the algorithm and control inside one FPGA implifies the hardware and improves the accuracy of operation.It is an effective new method for multichannel high speed data acquisition control.