载人航天器系统测试智能通用化数字接口设计

Design of General Purpose Intelligent Digital Interface for Manned-spacecraft Test System

摘要:

航天器系统接口种类和数量繁多,以往的测试系统需要针对卫星接口进行专门地面测试设备接口设计,工作量大,通用性差；为提高系统设计效率,文章提出了一种基于PXI总线技术的高性能通用数字接口模块设计方法,在给出模块结构的基础上,详细介绍了该模块的硬件主体及接口设计原理,并给出了软件设计策略及用户接口函数的定义；该模块具备多通道、大数据量同时收发的功能,已成功地应用于多个型号的测试系统；经过应用验证,该模块能够满足测试系统的使用需求。

Abstract:

Since there are many kinds and huge quantity of spacecraft interfaces, specialized interfaces have to be designed for traditional testing systems. This is kind of heavy workload, and it lacks of universality. In order to improve the efficiency of system design, a design method of high performance general digital interface module based on PXI bus is presented in this paper. On the basis of describing framework of the module, the design principles of main board and interface are introduced in detail. The software design strategy and definition of user interface are also provided. This module is capable of sending and receiving massive data via multi-channels. And it has been successfully applied in several models of testing systems. Practical application verifies that this module is able to meet the requirements of testing systems.