基于ARM的AFDX通信协议的模拟器设计
发布时间：2018-12-21 11:41
【摘要】：随着飞行的发展和需要，人们的需求日益增加，使得航空电子系统变得比以前复杂的多，传统的系统随着时代的发展已经无法满足现在的应用了，要满足大量的数据交换为前提下，开发一种更好的数据传输总线AFDX航空总线。针对目前该总线的配套测试环境和设备还不完善的现状，提供一种基于Linux改进的以太网做出的模拟AFDX端系统的硬件设备来支持真正的设备模拟。 论文工作主要包括如下内容：首先，本课题从国内外对全双工交换式以太网的研究出发，给出了自己在Linux移植平台上面的应用，深入的说明了现行情况中全双工交换式以太网的工作原理，以及目前全双工交换式以太网的优点，通过模拟该网络中的终端设备，为现行实际应用的设备研究出一种可以硬件仿真的设备模拟器，该设备模拟器的性能良好，实时性能较高，可以满足现在航空电子通信系统中的大部分应用，为应用程序提供用户程序接口。 为此进行了如下工作：首先分析了目前航空总线的需求；然后进行了AFDX端系统的系统搭建和总体设计；在此基础上进行了AFDX端系统的关键实现和软件架构设计，重点研究了AFDX端系统的核心实现方法，并且给出了AFDX端系统的软件设计结构。 本文设计的基于AFDX网络的设备模拟器，可以根据真实设备发出的数据进行数据的接收和发送，，并解析该数据。由于数据发送是单向的，当数据大量发送的时候，不会发生堵塞，所以数据是不会丢失的，这在航空电子系统中是非常重要的一个性能指标。 基于AFDX的交换网络，经分析和测试，证明此设备应该可以满足现在真实的设备进行测试，对我国的航空系统的升级和维护都有一定的积极意义，对我们国家的航空飞机通信设计也有一定的参考意义。
[Abstract]:With the development and need of flight, the demand of people is increasing day by day, which makes avionics system more complex than before. With the development of the times, the traditional system has been unable to meet the current application. A better data transmission bus AFDX aeronautical bus is developed under the premise of meeting a large amount of data exchange. In view of the imperfect test environment and equipment of the bus, a hardware device based on Linux improved Ethernet to simulate the AFDX system is provided to support the real device simulation. The main contents of the thesis are as follows: firstly, this paper presents the application of Linux transplant platform based on the research of full-duplex switched Ethernet at home and abroad. The working principle of full-duplex switched Ethernet in the current situation and the advantages of full-duplex switched Ethernet are explained in detail. By simulating the terminal equipment in the network, A kind of equipment simulator which can be simulated by hardware is developed for the practical application. The simulator has good performance and high real-time performance. It can meet most of the applications in the avionics communication system. Provides user program interfaces for applications. The main work is as follows: firstly, the requirements of the current aeronautical bus are analyzed, and then the system structure and the overall design of the AFDX terminal system are carried out. On this basis, the key implementation and software architecture design of AFDX end system are carried out, the core realization method of AFDX end system is studied emphatically, and the software design structure of AFDX end system is given. The device simulator based on AFDX network designed in this paper can receive and transmit the data according to the data sent out by the real device and parse the data. Because the data transmission is one-way, when the data is sent in a large amount, there will not be clogging, so the data will not be lost, which is a very important performance index in avionics system. The switching network based on AFDX, through analysis and test, proves that this equipment should be able to meet the actual equipment testing, which has certain positive significance to upgrade and maintain the aviation system of our country. For our country's aviation aircraft communication design also has certain reference significance.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP336;TP391.9
[Abstract]:With the development and need of flight, the demand of people is increasing day by day, which makes avionics system more complex than before. With the development of the times, the traditional system has been unable to meet the current application. A better data transmission bus AFDX aeronautical bus is developed under the premise of meeting a large amount of data exchange. In view of the imperfect test environment and equipment of the bus, a hardware device based on Linux improved Ethernet to simulate the AFDX system is provided to support the real device simulation. The main contents of the thesis are as follows: firstly, this paper presents the application of Linux transplant platform based on the research of full-duplex switched Ethernet at home and abroad. The working principle of full-duplex switched Ethernet in the current situation and the advantages of full-duplex switched Ethernet are explained in detail. By simulating the terminal equipment in the network, A kind of equipment simulator which can be simulated by hardware is developed for the practical application. The simulator has good performance and high real-time performance. It can meet most of the applications in the avionics communication system. Provides user program interfaces for applications. The main work is as follows: firstly, the requirements of the current aeronautical bus are analyzed, and then the system structure and the overall design of the AFDX terminal system are carried out. On this basis, the key implementation and software architecture design of AFDX end system are carried out, the core realization method of AFDX end system is studied emphatically, and the software design structure of AFDX end system is given. The device simulator based on AFDX network designed in this paper can receive and transmit the data according to the data sent out by the real device and parse the data. Because the data transmission is one-way, when the data is sent in a large amount, there will not be clogging, so the data will not be lost, which is a very important performance index in avionics system. The switching network based on AFDX, through analysis and test, proves that this equipment should be able to meet the actual equipment testing, which has certain positive significance to upgrade and maintain the aviation system of our country. For our country's aviation aircraft communication design also has certain reference significance.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP336;TP391.9
【参考文献】
相关期刊论文 前9条
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2 刘晓胜;吴瑾;何晔;张洁;;基于AFDX的航空数据网络终端设备设计[J];测控技术;2011年02期
3 欧阳t
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