基于ZYNQ的全冗余高速箭地通信装置设计

Full Redundacy And High-speed Communication Device Based On ZYNQ

摘要:

针对新型低温燃料运载火箭箭体较长,箭地之间通信距离远且传输可靠性要求高的特点,采用ZYNQ架构研制了一套小型化的全冗余高速通信装置。该装置通过分体式结构设计实现了模块的可扩展性,通过FPGA实现了LVDS/422接口、链路层组帧拆帧、板上时序及逻辑控制,通过ARM实现了系统资源调度、数据存储、网络通信及双网口绑定,通过采用基于AXI总线的多DMA通道并行传输方式实现了高性能传输。与传统的箭地通信装置相比,这种装置不仅体积缩小到原来的1/4,成本降低为原来的1/3,通信速率提高了一倍,且可靠性更高。

Abstract:

In order to meet the requirements of long communication distance and high transmission reliability between the new low temperature launch vehicle and ground, A set of miniaturized full redundancy and high-speed communication device was developed with the architecture of ZYNQ. The device realizes expansibility of the module through the split structure design, realizes the physical layer interface, link layer framing and deframing, on-board timing and logic control through FPGA, realizes system resource scheduling, data storage, network communication and dual network port binding through ARM, realizes high-performance transmission by adopting multi DMA channel parallel transmission mode in AXI bus. Compared with the traditional device, the device designed in paper not only reduced the size to a quarter, reduced the cost to a third, doubled the communication rate, but also achieved higher reliability.