本文選題：智能公共交通 + 地面數(shù)字機頂盒　； 參考：《大連理工大學(xué)》2013年碩士論文

【摘要】：當(dāng)前,隨著汽車保有量逐年增長,城市交通日益擁堵,智能公交系統(tǒng)的出現(xiàn)及發(fā)展壯大是社會需求發(fā)展和城市交通發(fā)展的必然趨勢,不僅可以滿足廣大人民群眾日益增長的物質(zhì)、文化需求,還可提高交通效率,緩解交通擁堵,為城市的可持續(xù)發(fā)展做出貢獻(xiàn)。 本文以開發(fā)設(shè)計的一款滿足國家標(biāo)準(zhǔn)GB20600-2006的地面數(shù)字接收機頂盒、電源盒和GPS外掛盒組成的簡單智能公共交通接收終端為例,對地面數(shù)字電視機頂盒的主要技術(shù)原理進行了分析,探討了該接收終端的整個設(shè)計過程。文中在簡要描述數(shù)字電視的傳輸標(biāo)準(zhǔn)以及地面數(shù)字電視接收機的工作原理的基礎(chǔ)上,闡述了地面數(shù)字機頂盒、電源盒及GPS外掛盒的各個組成部分,重點研究電源盒電源部分和音頻功放部分,機頂盒信源接收調(diào)制和解碼部分,GPS外掛盒中供電電路和GPS接收電路部分的設(shè)計。同時對安裝、實測過程中遇到的問題進行了改進,并進行實驗測試分析,通過實驗驗證了改進方案的正確性。 本文中所設(shè)計的地面數(shù)字機頂盒和GPS外掛盒,通過各種測試,各項主要性能指標(biāo)都達(dá)到了國家標(biāo)準(zhǔn),取得了良好的效果。
[Abstract]:At present, with the increase of vehicle ownership and traffic congestion, the emergence and development of intelligent public transport system is the inevitable trend of social demand development and urban traffic development. It can not only meet the increasing material and cultural needs of the broad masses of people, but also improve traffic efficiency and ease traffic congestion. In this paper, a simple intelligent public transport receiving terminal, which meets the national standard GB20600-2006, is developed and designed to meet the national standard GB20600-2006, which is composed of a simple intelligent public transport receiver, a power supply box and a GPS external box. This paper analyzes the main technical principle of the terrestrial digital TV set-top box, and discusses the whole design process of the receiving terminal. On the basis of briefly describing the transmission standard of digital TV and the working principle of terrestrial digital TV receiver, this paper expounds the components of ground digital set-top box, power box and GPS external box. Emphasis is placed on the design of power supply and audio power amplifier in the power supply box, modulation, modulation and decoding of the source of the set-top box, and the design of the power supply circuit and the GPS receiving circuit in the GPS external box. At the same time, the problems encountered in the course of installation and measurement are improved, and the correctness of the improved scheme is verified by experiments. The ground digital set-top box and GPS external box designed in this paper have passed various tests. Each main performance index has reached the national standard, has obtained the good effect.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：P228.4;U495

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本文編號：2007959