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一种基于DSP的ARINC429/RS-422接口转换电路

发表时间:2008-05-31  浏览量:2354  下载量:1061
全部作者: 温瑞华,何祁阳
作者单位: 上海交通大学电子信息与电气工程学院;63620部队
摘 要: 总线技术是航空电子综合化系统中的关键技术之一。有效、便捷、可靠的数据传输是保证设备之间资源共享和信息融合的重要前提。机载航天器测控站和着陆场空中搜救载机系统包含多种加装的测量、控制、通信设备,这些设备需要共享载机航电参数。论文提出的ARINC429/RS-422接口转换电路,通过直接接入载机总线系统的方式获取载机航电参数,既安全又经济而且易于实现。本文研究了ARINC429航空总线协议,选用HS-3282芯片接收ARINC429总线数据,以数字信号处理(digital signal processing, DSP)芯片TMS320LF2407为控制器和处理器,采用SN75174芯片和SN75175芯片实现RS-422接口。论文详细讨论了电路的工作原理和DSP软件的功能设计,给出了硬件原理框图、电路连接图和DSP软件流程图。
关 键 词: 电子电路;总线技术;信息融合;ARINC429;接口转换;数字信号处理
Title: Design of ARINC429/ RS-422 interface transforming circuit based on DSP
Author: WEN Ruihua, HE Qiyang
Organization: School of Electronic, Information and Electrical Engineering, Shanghai Jiao Tong University;63620 Unit
Abstract: Bus technology is one of the key technologies in integrated avionics system. Effective, convenient and reliable data transmission is an important precondition that the sharing of resources and information fusion could be ensured between equipment. The spacecraft TT & C system based on aircraft and the spacecraft landing on the air search and rescue system include a variety of retro-fitting of the measurement, control and communications equipment, these devices need to share aircraft avionics parameters. A design method of ARINC429/RS-422 interface transforming circuit based on DSP is discussed. Through direct access on the bus system for access to avionics parameters, the circuit is secure, economical and easy to achieve. On the bus ARINC429 aviation agreement, the HS-3282 chip is selected to receive ARINC429 bus data, the TMS320LF2407 DSP chip is the logic controller and CPU, the SN75174 chip and SN75175 chip are assembled to the RS-422 interface. The working principle of the circuit and functional design of the DSP software are discussed in detail. The hardware principle is a diagram. The illustration of the circuit and the DSP software flow chart are offered.
Key words: electronic circuit; bus technology; information fusion; ARINC429; interface transforming; digital signal processing(DSP)
发表期数: 2008年9月第10期
引用格式: 温瑞华,何祁阳. 一种基于DSP的ARINC429/RS-422接口转换电路[J]. 中国科技论文在线精品论文,2008,1(10):1113-1118.
 
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