基于CPCI总线的卫星和地面设备交互方法

Interactive Method of Satellite and Ground Equipment Based on CPCI Bus

在卫星地面测试阶段,为了解决遥测下行信道限制及数据下行延时等因素带来的星上测试数据不能实时性下传监测问题,设计了一种基于标准CPCI(Compact Peripheral Component Interconnect)总线数据传输模块实现多类型接口星上数据有线传输的应用方法;利用CPCI数据传输模块远程采集1553B(MIL-STD-1553B)总线数据和RS-422总线接口数据,完成组帧、打包并通过以太网发回地面计算机进行数据分析和处理;同时可以实现1553B接口功能远程设置,完成总线控制、监听、远置终端仿真功能,实现了卫星与地面设备定制传输和交互;同时给出了测试系统的设计方案,完成了数据传输模块的硬件设计与系统软件的工程实现。

In the ground test phase of the satellite, in order to solve the problems such as telemetry downlink channel restriction and data downlink delay, the on--board test data cannot be monitored in real time. An application method based on standard CPCI bus data transmission module to realize data transmission on multi type interface is designed. The CPCI data transmission module is used to collect 1553B data and RS--422 bus interface data remotely, and then the frame is packaged and sent back to the local computer through Ethernet for analysis and processing. The 1553B interface function can be implemented remotely. It completes the functions of bus control, monitor and remote terminal simulation. It realizes the customized transmission and interaction between satellite and ground equipment. At the same time, the design scheme of the test system is given. The hardware design of the data transmission module and the implementation of the system software are completed.