基于光纤的SpaceWire节点设计

Design of SpaceWire Nodes Based on Fiber Optics

摘要:

为实现航天器各SpaceWire仿真子系统分布式部署的能力,并且降低仿真节点使用国外收发芯片的高昂成本,提出一种实现分布式SpaceWire仿真节点卡的设计方法,仿真节点卡能够实现SpaceWire节点间的数据收发功能,并通过SpaceWire技术结合光纤远距离传输的特点,实现SpaceWire各仿真节点的分布式部署,利用FPGA可编程技术优势,以SpaceWire IP核为核心,降低了SpaceWire仿真节点的成本；通过仿真软件结合光纤采集卡对仿真节点卡进行了节点功能及光纤传输功能的验证；经实验测试仿真节点卡链路连接正常,数据收发稳定可靠,实现了分布式部署的能力、并大大降低了SpaceWire使用成本。

Abstract:

In order to achieve the ability of distributed deployment of SpaceWire simulation subsystems in spacecraft and reduce the high cost of using foreign transceiver chips for simulation nodes, a design method for implementing distributed SpaceWire simulation node cards is proposed. Simulation node cards can achieve data transmission and reception functions between SpaceWire nodes, and the distributed deployment of SpaceWire simulation nodes is achieved through SpaceWire technology combined with the characteristics of fiber optic long-distance transmission, By utilizing the advantages of FPGA programmable technology and using SpaceWire IP core as the core, the cost of SpaceWire simulation nodes has been reduced; The node function and fiber transmission function of the simulation node card were verified through simulation software combined with fiber optic acquisition card; After experimental testing, the simulation node card link connection is normal, the data transmission and reception are stable and reliable, achieving the ability of distributed deployment and greatly reducing the cost of using SpaceWire.