基于SOIS架构的星载设备虚拟访问设计

Design of Virtual Access to Device Based on SOIS Framework

为了更好地解决航天器设备间互操作难、软件通用性弱等问题,文章对空间数据系统咨询委员会(CCSDS)的航天器星载接口业务(SOIS)架构中,基于标准业务和电子数据单(EDS)的星载数据系统架构进行了分析,提出了以标准业务和EDS的融合方式开展设备虚拟访问的设计方法。对设备发现、设备枚举、设备访问、设备虚拟、数据池以及访问管理业务及其相关原语进行了实例化设计,结合1553B总线为实现即插即用而设计的EDS,开展了初步的测试验证,证明了其可行性。文章提出的星载设备虚拟访问融合方式可为标准业务及其相关的电子数据单设计提供参考,有助于系统快速集成、软硬部件的重用。

In order to better address the problems of spacecraft difficult interoperability between devices and weak software universality,the on-board data system architecture based on the standard services and electronic data sheet(EDS)in the spacecraft onboard interface services(SOIS)framework of the Consultative Committee for Space Data Systems(CCSDS)is analyzed,and a design approach for virtual access of device through the integration of standard services and EDS is proposed in this paper.The design instantiates the services for device discovery,device enumeration,device access,device virtualization,device data pool,and access management,along with their related primitives.Combined with EDS designed for plug-and-play on the 1553B bus,the preliminary test and verification are carried out,and the feasibility is proved.The virtual access fusion method of onboard devices proposed in this paper can provide reference for the design of standard services and related EDS,which contributes to the rapid system integration and reuse of software and hardware components.