摘要
数据采集系统作为人们实现各种自定义功能的测量工具,其高采样率、高吞吐量和高实时性成为必然发展趋势。因此,在基于高速ADC芯片EV8AQ160的2.4 Gsps数据采集现有技术基础上进一步研究,成功地进行了升级改进,并对改进的关键技术进行了详细的讨论,最终以XILINX K7系列FPGA为处理核心,实现了基于DDR3 SDRAM的大容量高速缓存,以及PXIe1.0 x4的DMA传输的高采样率、高带宽的DAQ系统。实验结果表明,升级后的DAQ系统最高采样率提升到了5 Gsps,有效上传带宽高达455 MB/s。
Data acquisition system is a measurement tool for people to achieve various functions. The high sampling rate, high throughput and high real-time performance become the inevitable trend. Therefore, the key technologies of improvement are successfully carried out and discussed on the basis of the 2.4 Gsps data acquisition system based on high speed ADC EV8 AQ160. And finally, using XILINX K7 series FPGA as processing core, a high sampling rate and high bandwidth DAQ system with DDR3 SDRAM’s large capacity cache and PXIe1.0 X4 DMA transmission is implemented. The experimental results show that the highest sampling rate of the upgraded DAQ system is increased to 5 Gsps, the effective upload bandwidth is as high as 455 MB/s.
作者
黄燕
黄光明
Huang Yan;Huang Guangming(College of Physical Science and Technology, Central China Normal University,Wuhan 430079,China)
出处
《电子测量技术》
2019年第2期130-134,共5页
Electronic Measurement Technology
作者简介
黄燕,硕士研究生,主要研究方向为电路与系统和FPGA程序设计等,E-mail:huangyanyan@mails.ccnu.edu.cn.
