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

摘要:

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。

Abstract:

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 defines 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 complex, 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 supply, 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 simplifies the external interface of the missile-borne telemetry and control equipment, and enables convenient and efficient online generation of telemetry PCM (Pulse Code Modulation) code stream. The function expansion module can be freely added or reduced without increasing the hardware burden of the bus interface, making the missile-borne telemetry and control equipment highly versatile.