摘要
研制了基于现场可编程门阵列（FPGA）、可编程延迟线（DS1020）和脉冲集成放大电路（HV732）的8通道、高精度、脉冲数字式超声相控阵发射系统;分析了关键技术并提出了解决方案。该系统适用于中心频率为0.1-10MHz的换能器,延迟精度为1ns,根据检测的不同要求,可以分别控制各个通道的延迟时间和脉冲宽度。
An eight-channel, high precision, pulsed and digital transmission system of ultrasonic phased array was developed by the use of field programmable gate array （FPGA）, programmable delay line （DS1020） and pulse integrated amplified circuit （HV732）. The key technology was analyzed and solution was proposed. The system is suitable for transducer center frequency ranging from 0.1 to 10 MHz, delay precision is 1ns, and it has the ability of controlling pulse width and delay time in each channel respectively based on different inspection requirement.
出处
《微计算机信息》
2010年第2期1-2,共2页
Control & Automation
关键词
超声相控阵
脉冲激励
发射系统
FPGA
ultrasonic phased array
pulse excitation
transmission system
FPGA
