一种新型多接口E1数据采集卡的设计与实现

Design and Implementation of a Novel Multi-Port E1 Signal Card

论述了多接口E1数据采集卡设计和实现方式,并给出了数据采集卡的软/硬件结构图。这种E1数据采集卡是利用E1(2M)子速率传输数据的设备,硬件结构基于FPGA,具有两种数据访问接口,即:ISA总线和RS232串口,根据需要可灵活设置。软件设计采用面向对象的方法,在W IN2000操作系统环境下实现了即插即用功能。应用结果表明:这种具有多种数据访问接口的设计是一种有效而实用的方法,极大地增强了监控系统组网的灵活性,并节约了系统资源。

Design and implementation of a novel E1 signal card （E1SC） which is primarily used in telecommunication field are introduced. The architecture of hardware is based on FPGA. Object oriented method is adopted in software design and has fulfilled the function of plug and play under the operation system of Win2000. This card transmits data with sub-rate of E1 （2M）. It provides two data access interface （ ISA bus and RS232port）. Application indicates that it is effective, flexible and convenient.