【摘要】：近年來，隨著我國經(jīng)濟的發(fā)展與城市化進程的加快，我國的汽車工業(yè)得到了飛速的發(fā)展，，但同時也面臨著交通事故頻發(fā)，事故責(zé)任認定缺乏第一手資料的困境。同時，汽車保有量的急驟增加也帶來了交通嚴重擁堵、燃料浪費嚴重、環(huán)境污染加劇等各方面問題。開發(fā)一種集傳統(tǒng)車輛行駛記錄儀、導(dǎo)航、視頻（圖片）實時傳輸、智能調(diào)度于一體的多功能汽車行駛記錄儀是各國紛紛提倡的智能運輸系統(tǒng)能夠發(fā)揮作用的基礎(chǔ)所在。 本文詳細論述了支持ITS的多功能汽車行駛記錄儀的設(shè)計與實現(xiàn)。首先，本文針對汽車行駛記錄儀在國內(nèi)外的應(yīng)用背景及現(xiàn)狀，確定了本項目的整體架構(gòu)即采用ARM加LINUX的嵌入式整體解決方案，并論述了從硬件到系統(tǒng)進行合理選型的原因及目標。為了增強記錄儀的功能，相對于現(xiàn)有的記錄儀，本系統(tǒng)增加了GPS、攝像頭、3G等多個模塊，實現(xiàn)了車輛實時定位、實時圖像采集與傳輸（圖片方式）功能。 其次，本文對汽車行駛記錄的硬件電路進行了詳細設(shè)計，包括電源電路、時鐘電路、數(shù)據(jù)采集電路、存儲系統(tǒng)電路、通信電路、LCD屏接口電路、3G通信接口電路、GPS模塊接口電路、IC卡讀取電路、SD卡接口電路、攝像頭接口電路等。 再次，本文對對系統(tǒng)軟件進行了詳細分析，著重介紹了BootLoader原理及U-Boot移植，以及嵌入式Linux內(nèi)核的裁剪與移植，并將之成功移植到目標平臺上。并基于此目標平臺，編寫了LCD、測速、SD卡、IC卡等接口的底層驅(qū)動程序。同時本文在應(yīng)用程序領(lǐng)域進行了研究，定義了數(shù)據(jù)存儲格式，確定了車輛行駛狀態(tài)數(shù)據(jù)處理流程，編寫了基于嵌入式Linux的GPS數(shù)據(jù)讀取程序等。 最后，論文對整個課題的研究與設(shè)計工作進行了總結(jié)，展望了今后進一步的相關(guān)工作。
[Abstract]:In recent years, with the development of economy and the acceleration of urbanization in our country, the automobile industry of our country has been developed rapidly, but at the same time, it is also facing the dilemma of frequent traffic accidents and lack of first-hand information on the identification of accident responsibility. At the same time, the rapid increase of car ownership has also brought about serious traffic congestion, serious fuel waste, environmental pollution and other problems. The development of a multifunctional vehicle driving recorder, which integrates traditional vehicle driving recorder, navigation, video (picture) real-time transmission and intelligent dispatching, is the basis of the intelligent transportation system advocated by many countries. In this paper, the design and implementation of multifunctional vehicle driving recorder supporting ITS are discussed in detail. First of all, according to the application background and present situation of automobile driving recorder at home and abroad, this paper determines the overall architecture of this project, that is, the embedded whole solution of ARM and LINUX. The reasons and objectives of reasonable selection from hardware to system are also discussed. In order to enhance the function of the recorder, compared with the existing recorder, the system adds several modules, such as GPS, camera, 3G and so on, to realize the functions of real-time vehicle positioning, real-time image acquisition and transmission (picture mode). Secondly, the hardware circuit of automobile driving record is designed in detail, including power supply circuit, clock circuit, data acquisition circuit, memory system circuit, communication circuit, LCD screen interface circuit, 3G communication interface circuit. GPS module interface circuit, IC card reading circuit, SD card interface circuit, camera interface circuit and so on. Thirdly, this paper analyzes the system software in detail, focuses on the principle of BootLoader and U-Boot migration, as well as the cutting and porting of embedded Linux kernel, and successfully transplanting it to the target platform. Based on this target platform, the bottom driver of LCD, speed measurement, SD card, IC card and other interfaces is written. At the same time, this paper studies in the field of application program, defines the data storage format, determines the data processing flow of vehicle driving state, and compiles the GPS data reading program based on embedded Linux. Finally, the research and design work of the whole subject is summarized, and the further related work in the future is prospected.
【學(xué)位授予單位】：湖南科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP368.1;TP216.2

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