一种弹载设备总线通信扩展模块设计与实现
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关键词：通信扩展模块；弹载设备；串行通信；HDLC协议；SoC；总线数据传输中图分类号：TN919.6-34；V243.1 文献标识码：A 文章编号：1004-373X（2026）06-0083-06
Design and implementation of bus communication expansion module for missile-borne equipment
FANShanyu1，FANZhouhua¹，ZHANGHao1，CHENGLei¹，WANGXiang² （1.DeparmntofOnboardMisileControlEqupent，BeijingIsituteofComputerechologyndApplications，Xi'an7a; 2.DepartmentofMilitaryComputingandStorage，BeijingInstituteofComputerTechnologyandAplications，Xi’anooChina）
Abstract：Inordertoachievethemodularizationofcommunicationbusinterfacesbetweenmisile-bornedevicesand improvetheflexibleconfigurabilityofcommunicationinterfaces，aRS485buscommunication expansionmodulebasedonafuly programmablesystem-on-chip（SoC）isdesigned.Themoduleconsistsoffour-chanelRS485interfaces，adomesticallyproduced SoCchip，andrelatedperipheralcomponents.TheSoCisintegratedprogrammablelogic （PL）andprocessorsystem（S）.ThePL canrealize high-leveldatalinkcontrol（HDLC）protocoldataparsingandeficientdataforwardingamongthefourbusesby means of thesoftcoredesignof HDLC protocolIP.PScancontrolthetransmissionof specificbusdataandreaddata fromthe receivebuferbyconfiguring thedynamicregistersandtranseiverbufersoftheHDLCIPsoftcoreinsidethePL.The communicationexpansion modulecancommunicatewith externaldevicesbymeansof synchronoushalf-duplex serial communicationmethod，andcanprformidependentbusdatatransmisionwithexteraldevicesthroughfour-chanelR485 bus.Onebuscanalsobeusedasthemainbus.Afterreceivingthedatasentbyexternaldevices tothebus，themainbuscan quicklyforwardthedatatoother three slavebuses.Theexperimentalresults indicatethatthiscommunicationcontrolmodulecan accuratelycompleteindependentbusdata transmisionanddataforwardingamong busesatacommunicationrateof 4Mb/s，and maintain zero errors during the HDLC encoding and decoding process.
Keywords：communication expansionmodule;missle-borneequipment;serialcommunication;；HDLC protocol; SoC;bus data transmission
0 引言
RS485总线通信作为弹载设备之间广泛使用的一种收稿日期：2024-11-21 修回日期：2025-01-23通信方式，具有传输速率高、抗干扰能力强、支持多节点连接等特点。（剩余5850字）
