基于协议变换的图像采集系统设计

介绍了一个基于高速协议变换的实时图像采集系统,该系统实现了从IEEE1394协议到千兆以太网协议的实时变换,将基于IEEE 1394协议的数字相机发出的图像数据转发到以太网上.系统设计使用了SOPC(System On a Programmable Chip)技术,通过Avalon总线将Nios Ⅱ处理器,千兆网MAC核和自定义的1394芯片接口逻辑等IP组件连接在一起形成主要的硬件电路,结合系统软件设计实现了对高速图像数据的实时转发.系统达到了较好的性能,同时具有集成度高,结构简单和扩展性好的特点,展示了利用SOPC技术解决此类问题的优势.

Design of IEEE 1394/GbE conversion system based on SOPC technology

The achitecture and implementation of an image acquisition system which makes a real-time IEEE 1394/GbE conversion was discussed. The system can transmit the image data from the IEEE 1394-based camera to the Ethernet. System on a programmable chip(SOPC) technology was employed in the design. A Nios II processor, a GbEMac and a selfmade interfacing logic for IEEE 1394 link layer chip were integrated into a field programmable gate array(FPGA) chip, and the main hardware module was built by connecting all these internet protocol(IP) components with the Avalon buses. Together with the software programming, the system realized real-time transmission of the high speed picture data. The design achieved good performance, high degree of integration, simplicity and flexibility, and this shows the advantage of the SOPC technology.