关键词: 高速数据采集, PCI9656, 独立冗余磁盘阵列, 可编程逻辑器件

Abstract: The design of a high-speed data acquisition and real-time storage system based on PCI-X bus was described in this paper. To achieve high-speed data transmission, the PCI9656 was used as PCI bus master I/O accelerator. An IA server that supported 64bit/66MHz PCI-X and SCSI RAID was adopted as the computer platform, to ensure high-speed real-time data storage. The time control of data acquisition and transmission was realized by programmable logic device. This system had been successfully applied to the echo signal acquisition of a radar system. The continuous radar echo acquisition and storage was implemented, with 100MSPS sampling rate, 10bit quantization precision, and signal distortion less than 0.2%, which met the requirements of high-speed acquisition and real-time storage.

Key words: high-speed acquisition, PCI9656, Redundant Array of Independent Disk (RAID), programmable logic device