發(fā)布時間：2018-05-21 08:38

  本文選題：安全行車 + ARM��； 參考：《南京信息工程大學(xué)》2013年碩士論文

【摘要】：在高速公路建設(shè)飛速發(fā)展的時代,高速公路安全行車問題一直是智能交通領(lǐng)域的重要研究對象。大量數(shù)據(jù)表明在不良天氣條件下,低能見度天氣對高速公路行車安全產(chǎn)生的影響極大。如今環(huán)境污染日益嚴重,低能見度的天氣狀況逐漸增多,“霧霾”天氣也時有出現(xiàn)。目前,預(yù)防因惡劣天氣而發(fā)生的交通事故主要方法有封鎖公路以及使用高速公路車輛誘導(dǎo)系統(tǒng)等,但這些方法均不能切實有效地解決低能見度下的安全行車問題。 本文旨在針對上述問題,以提高高速公路行車安全性為目的,研究一種高速公路安全行車方案,為高速公路安全行車提供技術(shù)支持。該方案要求在低能見度的天氣條件下車輛執(zhí)行排隊協(xié)作行車策略,利用技術(shù)手段使隊列中的車輛在行駛速度上達成協(xié)調(diào),從而在高速公路通暢行駛的前提下保證高速公路行車安全。本文主要對如下內(nèi)容進行了研究： 1、分析在低能見度條件下導(dǎo)致高速公路發(fā)生事故的因素,設(shè)計了排隊協(xié)作行車策略,仿真表明當(dāng)車隊的整體速度達成協(xié)調(diào)時可以提高行車安全性。 2、為了讓駕駛員在低能見度條件下可以直觀地了解周圍車輛的行車狀況,設(shè)計了高速公路安全行車終端。該終端主要是利用GPS技術(shù)獲取車輛的地理位置信息,在車輛間建立ZigBee無線通信網(wǎng)絡(luò),裝有車載終端的車輛成為無線網(wǎng)絡(luò)中的節(jié)點,從而使無線網(wǎng)絡(luò)中的車輛共享其他車輛的行車信息。通過ARM處理器對共享的數(shù)據(jù)進行處理,計算出與周圍車輛的相對位置,最終在顯示屏上顯示周圍車輛的分布情況。 3、完成車載終端的硬件設(shè)計、Linux平臺的搭建、ZigBeeCC2420驅(qū)動程序的設(shè)計、系統(tǒng)圖形化界面設(shè)計。 安全行車系統(tǒng)的測試表明本文設(shè)計的高速公路安全行車系統(tǒng)可以幫助駕駛員適時合理地調(diào)節(jié)速度,保持安全的車間距,以防交通事故的發(fā)生。
[Abstract]:In the era of rapid development of expressway construction, expressway safety driving problem has been an important research object in the field of intelligent transportation. A large number of data show that the low visibility weather has a great impact on the highway safety under the bad weather conditions. Today, environmental pollution is increasingly serious, low visibility weather conditions are gradually increasing, "haze" weather has also appeared from time to time. At present, the main methods to prevent traffic accidents caused by bad weather are road blockade and the use of highway vehicle guidance system, but these methods can not effectively solve the problem of safe driving under low visibility. In order to improve the safety of freeway driving, this paper aims to study a safe driving scheme for freeway, which can provide technical support for safe driving of expressway. In this scheme, vehicles in low visibility weather conditions are required to implement queueing cooperative driving strategy, and make use of technical means to coordinate the speed of vehicles in the queue. In order to ensure the expressway traffic safety under the premise of smooth running. The main contents of this paper are as follows: 1. After analyzing the factors that cause the accidents in the freeway under the condition of low visibility, the queuing cooperative driving strategy is designed. The simulation results show that the safety of the motorcade can be improved when the overall speed of the motorcade is coordinated. 2. In order to make the driver know the driving condition of the surrounding vehicle directly under the condition of low visibility, the safe driving terminal of expressway is designed. This terminal mainly uses the GPS technology to obtain the geographical position information of the vehicle, establishes the ZigBee wireless communication network between the vehicles, and the vehicle equipped with the vehicle terminal becomes the node in the wireless network. Thus, the vehicles in the wireless network share the driving information of other vehicles. The shared data is processed by the ARM processor, and the relative position of the vehicle is calculated. Finally, the distribution of the surrounding vehicle is displayed on the display screen. 3. Finish the hardware design of the vehicle terminal and build the Linux platform. The driver of ZigBeeCC2420 is designed, and the graphical interface of the system is designed. The test of safe driving system shows that the safe driving system designed in this paper can help the driver to adjust the speed and keep the safe distance between the vehicles at the right time to prevent traffic accidents.
【學(xué)位授予單位】：南京信息工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：U495;U492.8

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