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基于FPGA的实时数据采集与远程传输系统设计
引用本文:崔俊杰,郭宏.基于FPGA的实时数据采集与远程传输系统设计[J].数据采集与处理,2005,20(3):366-370.
作者姓名:崔俊杰  郭宏
作者单位:北京航空航天大学,自动化科学与电气工程学院,北京,100083
摘    要:针对CT机扫描过程中对数据采集的快速性和传输的精确性的严格要求,提出了一种基于可编程逻辑门阵列(FPGA)技术的实时数据采集与远程传输的设计方案.该方案采用了ARM+FPGA的体系结构,利用FPGA实现了数据采集、缓冲、格式转换、前向纠错编码和HOTLink传输控制等实时信号处理的线性流水阵列,并在数据链路的物理接口和远程传输的精确度保障等方面提出了可靠的解决方法.同时,给出了一种利用FPGA进行高速高精度模拟量采集的方法.该方案成功地应用到通用电气公司某型号CT机中.

关 键 词:数据采集  可编程逻辑门阵列  纠错  远程传输
文章编号:1004-9037(2005)03-0366-05
收稿时间:2004-10-24
修稿时间:2005-01-13

Design of Real-Time Data Acquisition and Remote Transmission System Based on FPGA Technology
CUI Jun-jie,GUO Hong.Design of Real-Time Data Acquisition and Remote Transmission System Based on FPGA Technology[J].Journal of Data Acquisition & Processing,2005,20(3):366-370.
Authors:CUI Jun-jie  GUO Hong
Abstract:To achieve the strict requirements for rapidness of the data acquisition and the precision of data transmission during the scanning of CT machines,a design approach for the real-time data acquisition and remote transmission system based on FPGA technology is presented. The approach adopts an overall structure of ARM+FPGA and realizes a real-time signal processing assembly line of data acquisition, storage, format conversion, FEC coding and HOTLink transmission. And some effective methods are gived to ensure the reliability of the physical interfaces and the precision of the remote data transmission. A high-speed and high-precision method to acquire analog signals is also proposed. The approach is applied in the CT scanner produced by GE Corporation.
Keywords:data acquisition  FPGA  error correction  remote transmission
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