面向汽车电子领域的嵌入式软件可靠技术的研究与开发

发布时间：2018-03-23 19:48

本文选题：汽车电子　切入点：可靠　出处：《电子科技大学》2012年硕士论文

【摘要】：在汽车工业领域，汽车电子软件在整车中越来越占据重要的地位。而软件的安全性、可靠性、健壮性在汽车这种安全关键的领域不得不成为非常重要的课题。本文正是出于如何提高汽车电子软件的可靠性这个初衷，在面向汽车电子领域的软件可靠性做了些研究和实现。通过对汽车电子软件领域的通用标准AUTOSAR的研究以及与汽车厂商密切合作、现场调研需求的基础上，做了些针对性的研究并予以实现。在AUTOSAR标准中对操作系统、关键数据的非易失性、端到端的通信以及程序流的监控等都提出了高可靠的需求。而本文主要针对操作系统和关键数据的非易失性存储进行研究，对汽车电子软件的可靠性贡献出自己的力量。本文的主要工作内容包含：通过对实验室已有的汽车电子领域的OSEK操作系统进行改进，增加定时保护和存储保护的功能，使其符合AUTOSAR标准中的需求和汽车厂商的需求，提高了在多ECU的复杂环境中操作系统的可靠性而且将错误扩散降到了最低，方便最快定位并处理出现问题和错误的模块，实现了隔离保护。提高了操作系统的可靠性。 AUTOSAR标准中明确提出对关键数据的非易失性的可靠存储，又由于嵌入式环境中的限制性的硬件条件，使得该部分的实现更加增大了难度。通过实现存储栈三层的软件，对数据提供保存、加载、校验和保护和验证、可靠存储。不但保证了数据的可靠性而且克服了硬件环境中只有Flash存储介质的局限性。该课题的实现，一定程度上保证了汽车电子软件的可靠性，为汽车电子领域的软件可靠性工作做出了探索性的贡献，，使得中国汽车电子软件开发者有足够的勇气和信心去创造我们完全自主知识产权的汽车。
[Abstract]:In the field of automobile industry, automotive electronic software plays an increasingly important role in the whole vehicle, and the safety, reliability and robustness of the software have to become a very important subject in the key field of automobile safety. This paper is out of the original intention of how to improve the reliability of automotive electronic software. Based on the research and realization of the software reliability in the field of automotive electronics, based on the research of the general standard AUTOSAR in the field of automotive electronic software and the close cooperation with the automobile manufacturers, We have done some targeted research and implementation. In the AUTOSAR standard, the key data in the operating system, the non-volatile, End-to-end communication and program flow monitoring have put forward high reliability requirements, but this paper mainly focuses on the non-volatile storage of operating system and key data, and contributes its own strength to the reliability of automotive electronic software. The main work of this paper includes:. By improving the OSEK operating system in the field of automotive electronics in the laboratory, the functions of timing protection and storage protection are added to meet the requirements of AUTOSAR standards and automobile manufacturers. The reliability of the operating system in the complex environment of multiple ECU is improved and the error diffusion is reduced to the minimum. It is convenient to locate and deal with the problems and errors in the module, and the isolation protection is realized, and the reliability of the operating system is improved. In AUTOSAR standard, the non-volatile reliable storage of key data is clearly put forward, and the implementation of this part is more difficult because of the restrictive hardware condition in embedded environment. It not only guarantees the reliability of data but also overcomes the limitation of only Flash storage medium in hardware environment. The realization of this subject, to some extent, ensures the reliability of automotive electronic software, and makes an exploratory contribution to the software reliability work in the field of automotive electronics. Chinese auto electronics software developers have enough courage and confidence to create our fully independent intellectual property rights of the car.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：U463.6;TP368.1

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