發(fā)布時(shí)間：2018-02-04 19:03

  本文關(guān)鍵詞： 車聯(lián)網(wǎng) V2X LTE-V DSRC 可靠性　出處：《中國(guó)科學(xué)院大學(xué)(中國(guó)科學(xué)院工程管理與信息技術(shù)學(xué)院)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：車聯(lián)網(wǎng)是以車內(nèi)網(wǎng)、車際網(wǎng)和車載移動(dòng)互聯(lián)網(wǎng)為基礎(chǔ),按照約定的通信協(xié)議和數(shù)據(jù)交互標(biāo)準(zhǔn),在車-X(X:車、路、行人及互聯(lián)網(wǎng)等)之間,進(jìn)行無(wú)線通訊和信息交換的大系統(tǒng)網(wǎng)絡(luò),是能夠?qū)崿F(xiàn)智能化交通管理、智能動(dòng)態(tài)信息服務(wù)和車輛智能化控制的一體化網(wǎng)絡(luò),是物聯(lián)網(wǎng)技術(shù)在交通系統(tǒng)領(lǐng)域的典型應(yīng)用。近年來車聯(lián)網(wǎng)相關(guān)的技術(shù)有很大的提高,從單純的GPS+GPRS技術(shù)組合應(yīng)用到現(xiàn)在的V2X直通網(wǎng)絡(luò)。本文設(shè)計(jì)和實(shí)現(xiàn)一種基于LTE-V協(xié)議的車聯(lián)網(wǎng)車載終端系統(tǒng)。車載終端系統(tǒng)包含軟件設(shè)計(jì)和硬件設(shè)計(jì),軟件設(shè)計(jì)包含高層應(yīng)用層、物理層、MAC層、平臺(tái)驅(qū)動(dòng)層。平臺(tái)驅(qū)動(dòng)層要求滿足高可靠、支持任務(wù)刪減,中斷優(yōu)先級(jí)可配、支持核間通信、數(shù)據(jù)空間統(tǒng)一分配、為物理層、MAC層、及應(yīng)用層程序的快速運(yùn)行提供必要的支撐。硬件設(shè)計(jì)包含原理圖設(shè)計(jì),PCB設(shè)計(jì),可靠性設(shè)計(jì)。本課題選自,基于LTE-V車聯(lián)網(wǎng)終端平臺(tái)的硬件設(shè)計(jì)和平臺(tái)驅(qū)動(dòng)的開發(fā)。本作者主要完成的工作如下:1)完成基于車聯(lián)網(wǎng)車載終端的硬件平臺(tái)電路的設(shè)計(jì)和仿真。此硬件平臺(tái)以本公司自研基帶處理器為核心來設(shè)計(jì)本方案硬件平臺(tái)。以高速射頻控制器完成對(duì)車載終端射頻數(shù)據(jù)的收發(fā)控制,并完成數(shù)據(jù)傳輸正確性校驗(yàn)和糾錯(cuò);以DDR3做為車聯(lián)網(wǎng)終端的運(yùn)行內(nèi)存,實(shí)現(xiàn)數(shù)據(jù)的高速處理;以7寸液晶屏作為車聯(lián)網(wǎng)終端的顯示界面;以DMA的方式對(duì)數(shù)據(jù)進(jìn)行搬移;并以TTlog的方式對(duì)車聯(lián)網(wǎng)終端的運(yùn)行狀態(tài)進(jìn)行監(jiān)控。2)完成車聯(lián)網(wǎng)終端的系統(tǒng)啟動(dòng)引導(dǎo);完成物理層算法的驅(qū)動(dòng)模塊的設(shè)計(jì),仿真和調(diào)試。實(shí)現(xiàn)了射頻收發(fā)控制、核間消息通信設(shè)計(jì)、DSP的省電管理、DMA數(shù)據(jù)搬移、省電管理、DSP基礎(chǔ)模塊設(shè)計(jì)。3)完成車聯(lián)網(wǎng)終端系統(tǒng)平臺(tái)的功能驗(yàn)證和系統(tǒng)集成測(cè)試,并通過硬件可靠性測(cè)試。本設(shè)計(jì)實(shí)現(xiàn)基于LTE-V車聯(lián)網(wǎng)雙模終端系統(tǒng),實(shí)驗(yàn)證明系統(tǒng)處理速度快、性能穩(wěn)定,滿足LTE-V協(xié)議對(duì)車聯(lián)網(wǎng)低延時(shí)、高可靠的要求;并對(duì)未來基于LTE-V協(xié)議的車聯(lián)網(wǎng)產(chǎn)品提供設(shè)計(jì)參考依據(jù)。
[Abstract]:Car networking is based on the vehicular intranet, vehicular network and vehicle-mounted mobile Internet, in accordance with agreed communication protocols and data exchange standards, between vehicle-XX: vehicles, roads, pedestrians and the Internet. The large system network for wireless communication and information exchange is an integrated network which can realize intelligent traffic management, intelligent dynamic information service and intelligent vehicle control. It is a typical application of Internet of things technology in the field of transportation system. In recent years, the related technology of vehicle networking has been greatly improved. From simple GPS. GPRS technology combination is applied to the current V2X pass-through network. This paper designs and implements a vehicle-connected vehicle terminal system based on LTE-V protocol. The on-board terminal system includes software design and hardware design. The software design includes high layer application layer, physical layer MAC layer, platform driver layer. Platform driver layer requirements to meet the high reliability, support task deletion, interrupt priority can be allocated, support inter-core communication. The unified allocation of data space provides the necessary support for the physical layer MAC layer and the application layer program fast running. The hardware design includes schematic design PCB design and reliability design. Hardware Design and platform driver Development based on LTE-V vehicle Networked Terminal platform. The main work accomplished by the author is as follows: 1). The design and simulation of the hardware platform circuit based on the vehicle network vehicle terminal is completed. The hardware platform is designed with the core of our company's self-developed baseband processor. The high-speed radio frequency controller is used to complete the design of the vehicle terminal. Transceiver control of RF data. And the correctness of the data transmission and error correction; Using DDR3 as the running memory of the vehicle network terminal, the data can be processed at high speed. The 7-inch LCD screen is used as the display interface of the vehicle network terminal; To move the data by DMA; And the mode of TTlog to monitor the running state of the vehicle network terminal. 2) complete the system boot of the vehicle network terminal; The design, simulation and debugging of the driving module of the physical layer algorithm are completed. The RF transceiver control and inter-core message communication are implemented. The design of DSP power saving management and DMA data transfer, power saving management. DSP basic module design. 3) complete the vehicle networking terminal system platform functional verification and system integration testing, and pass the hardware reliability test. This design based on LTE-V vehicle networking dual-mode terminal system. The experimental results show that the system has the advantages of fast processing speed and stable performance. It meets the requirements of LTE-V protocol for the low delay and high reliability of the vehicle network. And to the future based on the LTE-V protocol of the car networking product design reference.
【學(xué)位授予單位】：中國(guó)科學(xué)院大學(xué)(中國(guó)科學(xué)院工程管理與信息技術(shù)學(xué)院)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN929.5;U495

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