多通道高速实时数据采集与处理平台的设计

Design of Multichannel High-speed and Real-time Information Processing System

针对红外导引头多元信息探测和实时数据处理要求,设计了基于FPGA和DSP的多通道高速实时数据采集和处理平台;在该平台中,通过FPGA实现了DSP的引导、多通道高速A/D、D/A、大容量存储器(SDRAM和FLASH)和数字I/O等功能模块的无缝链接及逻辑控制;利用时序分配和EDMA(扩展的直接存储器访问)技术以及McBSP(多通道缓冲串口)和HPI(主机口),实现了FPGA和DSP之间实时传输与通信控制;实际应用表明在该平台中A/D与FPGA之间串行传输速率可达20MHz,FPGA与DSP之间串行传输速率可达70MHz,且平台运行稳定、可靠,满足了红外导引头的实时信号处理要求。

Multichannel high--speed and real--time Information Processing System with open style and modularization based on FPGA and DSP is designed to improve information acquiring and processing performance of infrared seeker in the paper. It is completed to boot DSP and to connect high--speed A/D, D/A, SDRAM, FLASH and digital I/O by FPGA. By the technique of time series div/sion, Enhanced Direct Memory Access, McBSP and HPI, Multichannel High--speed and real--time data transmitting between FPGA and DSP is achieved. It is proved that the serial transmitting velocity between A/D and FPGA can reach 20MHz and the serial transmitting velocity between FPGA and DSP can reach 70MHz. The system fills the requirement of high--speed and real--time information processing with stabilization and credibility.