模块化弹载测控设备内总线交互技术研究与应用

Research and Application of Bus Interaction Technology in Modular Missile-borne Telemetry and Control Equipment

长期以来,模块化设计一直是弹载测控设备主流的实现方法。然而,模块间的信息交互方式没有统一的标准,研制单位根据自身的技术特点、信号特征进行定义,其定义的方式直接影响或决定了弹载测控设备实现的难易程度。为研发一种高效的弹载测控设备内部互联技术,使得在弹载测控设备性能要求越来越复杂的当下,让模块的连接更简单更高效,通用化程度更高,本文从功能上及硬件上对弹载测控设备进行精细化架构划分,分成三大核心模块及功能扩展模块,并定义一种高效的模块级内总线接口形式及协议。总线包含一次供电、二次供电及内部交联信号的输入输出,信号的交互采用半双工总线形式,各模块均可在线访问总线,在线编辑总线。经设计与实验验证,采用该总线的设计方法使得弹载测控设备对外接口交互简单,在线生成遥测PCM(Pulse Code Modulation,脉冲编码调制)码流便捷高效,功能扩展模块可自由地叠加或减少,不增加总线接口的硬件负担,使得弹载测控设备通用化程度很高。

For a long time,the modular design has been the mainstream implementation method of missile-borne telemetry and control equipment.However,there is no uniform standard for information interaction between modules.The development unit de-fines it according to its own technical and signal characteristics.The way of definition directly affects or determines the difficulty of implementing missile-borne telemetry and control equipment.In order to develop an efficient internal interconnection technology for missile-borne telemetry and control equipment,so that the connection of modules is simpler and more efficient,and the degree of generalization is higher when the performance requirements of missile-borne telemetry and control equipment become more com-plex,this paper divides the missile-borne telemetry and control equipment into three core modules and function expansion modules,and defines an efficient module-level bus interface form and protocol.The bus includes the input and output of primary power sup-ply,secondary power supply,and internal cross-linked signals.The signal interaction adopts the form of a half-duplex bus.Each module can access the bus online and edit the bus online.Through design and experimental verification,the bus design method sim-plifies the external interface of the missile-borne telemetry and control equipment,and enables convenient and efficient online gener-ation of telemetry PCM(Pulse Code Modulation)code stream.The function expansion module can be freely added or reduced with-out increasing the hardware burden of the bus interface,making the missile-borne telemetry and control equipment highly versatile.