一种1553B总线远程终端的即插即用的设计

One Plug and Play Design of 1553B Bus Remote Terminal

摘要:

随着航天技术的不断发展,研制即插即用、低成本、小型化的卫星渐渐成为一种趋势,我国的星上数据管理系统使用1553B总线连接各个有数据交换需求的计算机与分系统,这些计算机与分系统也就成为1553B总线的远程终端；为了设计即插即用的1553B远程终端,对电子数据表单(Electronic data sheet,EDS)、龙芯1F中的1533B简易终端进行了研究,分析了电子数据表单的设计方法和使用方式,提出了应用EDS、1553B通信EDS的设计方法；分析了1553B简易终端对龙芯1F中测控接口的访问控制方式,在龙芯1F中添加了一个SPA(Space Plug-and-play Avionics)接口,与1553B简易终端联合使用,当龙芯1F作为1553B总线上的一个终端设备时,具有了即插即用的特征；由此说明1553B远程终端是可以实现即插即用的,同时把即插即用这一新的设计理念带入星载数据系统的设计中。

Abstract:

It has gradually become a trend to develop the plug and play, low cost , miniaturization satellite with the continuous development of aerospace technology. Our country""s On Board Data Handling system uses 1553B bus to connect each computer and subsystem which has data exchange requirements, and then these computers and subsystems become the remote terminal of the 1553B Bus. In order to design a plug and play remote terminal of 1553B, the Electronic Data Sheet and the 1553B simple terminal of Loongson 1F were researched. The design method and use mode of electronic data sheet were analyzed, the design method of application EDS and 1553B communication EDS were proposed. The access control mode of the 1553B simple terminal to the telemetry and remote control interfaces in Loongson 1F was analyzed. A SPA(Space Plug-and-play Avionics)interface which cooperates with 1553B simple terminal was added to Loongson 1F.Loongson 1F possess the characteristics of plug and play when it was used as a terminal device on the 1553B Bus. It has been illustrated that the 1553B remote terminal can achieve the requirements of plug and play, in the same time this new design concept(plug and play)is brought into the design of the satellite On Board Data Handling system.