基于嵌入式系统的汽车行驶记录仪的研究与设计

发布时间：2018-11-28 10:44

【摘要】：汽车行驶记录仪作为能监控和记录汽车行驶状态的电子仪器，可以规范驾驶员的驾驶行为，从而能有效的降低交通事故的发生，，本设计选择嵌入式系统作为汽车行驶记录仪的开发系统。嵌入式系统具有软件、硬件可裁剪，功能齐全，可靠性高，成本低，体积小，功耗低等特点，已广泛应用于生产、工业控制、国防、通信、汽车电子等领域。本文设计的汽车行驶记录仪就是一种基于嵌入式系统的新型电子设备，采用的嵌入式处理器是由SAMSANG公司成产的S3C2440A。S3C2440A具有丰富的外设和I/O口，功能强大，高集成度，低功耗的特点。本设计采用的操作系统是Linux系统，Linux系统是遵循GPL协议开放源代码的操作系统，使用时不需要交纳版权费用。本文从硬件和软件两个方面详细论述了汽车行驶记录仪的系统设计与开发。硬件方面，首先介绍了系统总体构成，然后论述了各功能模块的选择与论证，最后完成了GPS、GPRS、数据采集和存储等模块的电路设计。软件方面，首先实现了主机开发环境的建立，主要包括Linux系统在PC机上的安装和arm-linux交叉编译环境的建立；其次，详细介绍了嵌入式Linux系统在目标机上的建立过程，完成了Bootloader和Linux-2.6内核在目标板的移植；最后，完成了系统软件的开发，包括底层驱动程序和上层应用程序的编写，并通过了系统测试。
[Abstract]:As an electronic instrument which can monitor and record the driving state of the vehicle, the vehicle driving recorder can regulate the driver's driving behavior, thus effectively reduce the occurrence of traffic accidents. This design chooses the embedded system as the development system of the vehicle traveling recorder. The embedded system has been widely used in the fields of production, industrial control, national defense, communication, automobile electronics and so on, because it has the characteristics of software, hardware tailoring, complete function, high reliability, low cost, small volume and low power consumption. The vehicle traveling recorder designed in this paper is a new electronic device based on embedded system. The embedded processor is made by SAMSANG Company. The S3C2440A.S3C2440A has abundant peripheral and I / O ports, powerful function and high integration. Features of low power consumption. The operating system used in this design is Linux system, and Linux system is open source operating system following GPL protocol. In this paper, the system design and development of vehicle traveling recorder are discussed in detail from two aspects of hardware and software. In the aspect of hardware, the overall structure of the system is introduced, and then the selection and demonstration of each functional module are discussed. Finally, the circuit design of GPS,GPRS, data acquisition and storage module is completed. In the aspect of software, the establishment of host development environment is realized, including the installation of Linux system on PC and the establishment of arm-linux cross-compiling environment. Secondly, the establishment process of embedded Linux system on target computer is introduced in detail, and the transplanting of Bootloader and Linux-2.6 kernel in target board is completed. Finally, the development of the system software is completed, including the writing of the bottom driver and the upper application program, and the passing of the system test.
【学位授予单位】：暨南大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1;TP216.2

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