本文關(guān)鍵詞： 虛擬現(xiàn)實技術(shù) 3DMAX Unity3D 多媒體壓縮 150KW發(fā)射機　出處：《河北科技大學》2017年碩士論文　論文類型：學位論文

【摘要】：伴隨著計算機網(wǎng)絡(luò)技術(shù)和計算機科技的快速發(fā)展,一種新型的教學方式也隨之產(chǎn)生,成功地打破了時間和地域的限制。發(fā)射機作為發(fā)射臺的核心傳播設(shè)備,在廣播發(fā)送中起著極其重要的作用。目前維護發(fā)射機的人員,獲取發(fā)射機知識主要靠師父帶徒弟,職工集體參加學習,平時很少能夠拆卸發(fā)射機的元器件,了解內(nèi)部的構(gòu)造。當設(shè)備發(fā)生故障時,不知怎么處理。隨著虛擬現(xiàn)實技術(shù)的發(fā)展越來越迅速,運用它所具有的交互性、沉浸感和構(gòu)想性等特點,將改善以上存在的教學弊端,讓職工隨時可以學習發(fā)射機理論知識,通過視頻和三維動畫了解內(nèi)部結(jié)構(gòu),大大提高職工的學習興趣,有利于職工從知識學習到動手仿真學習的跨越。本文研究了150KW發(fā)射機的教學內(nèi)容和三維動畫的設(shè)計及互動。從整篇文章的結(jié)構(gòu)來講,首先介紹了現(xiàn)在科學界非常流行的VR技術(shù)在教學系統(tǒng)中的應(yīng)用;通過充分調(diào)研和比較目前虛擬仿真教學現(xiàn)狀的基礎(chǔ)上,確定了本系統(tǒng)三維互動實現(xiàn)的工具,系統(tǒng)采用3DMAX軟件搭建了發(fā)射機的整體3D模型和部分元件的模型,用Unity3D引擎實現(xiàn)三維動畫的網(wǎng)絡(luò)互動;為了解決帶寬問題,對不同的文件均選擇最佳的壓縮方法。由于本系統(tǒng)中涉及大量元器件的圖片、視頻、三維動畫等文件,尤其是三維動畫,數(shù)據(jù)文件大,傳輸量大,傳輸速度受帶寬的影響也較大。為了減少因文件太大而對傳輸速度造成影響,導致難以閱讀的困擾,分別對不同格式的文件數(shù)據(jù)進行了壓縮,縮小文件的大小。對于元器件的平面圖展示,統(tǒng)一使用JPEG格式,并實現(xiàn)了其放大和縮小展示;對于電路圖的閱讀,統(tǒng)一使用PDF格式展示;對于元器件的組裝和拆卸配置了3D動畫演示,為了減少三維動畫文件的大小,使之利于網(wǎng)絡(luò)傳輸,采用了流媒體傳輸方式,大大地增加了傳輸速度,而圖像質(zhì)量不受影響。根據(jù)發(fā)射機學習內(nèi)容將該系統(tǒng)主要分為入門篇、原理篇、維護篇、故障篇、元件篇、圖紙資料、四會篇和論壇八個部分。學習者可以按照常規(guī)的目錄式結(jié)構(gòu)閱讀各篇章的詳細內(nèi)容,結(jié)合圖片、圖紙、三維動畫的展示來更具體的了解發(fā)射機,學習發(fā)射機的使用和維護。最終使軟件設(shè)計具有互動性和實用性,支持異地學習、交流和資源共享。目前,該系統(tǒng)已經(jīng)成功推廣運用到了無線廣播電臺的各臺站中,為各臺站技術(shù)人員的學習和培訓提供了方便,達到了設(shè)計系統(tǒng)的預期目標。
[Abstract]:With the rapid development of computer network technology and computer technology, a new teaching method has come into being, which has successfully broken the limitation of time and region. Transmitter is the core communication equipment of transmitter. It plays an extremely important role in broadcasting and transmitting. At present, the personnel who maintain the transmitter mainly rely on master and his disciples to acquire knowledge of the transmitter. The staff and workers take part in the study collectively, and rarely can they remove the transmitter components at ordinary times. Understand the internal structure. When the equipment fails, I do not know how to deal with it. With the rapid development of virtual reality technology, the use of its interactive, immersion and conceptualization characteristics. Will improve the above existing teaching defects, so that staff can learn transmitter theory knowledge at any time, through video and three-dimensional animation to understand the internal structure, greatly improve the learning interest of the staff. This paper studies the teaching content of 150KW transmitter and the design and interaction of 3D animation. Firstly, the application of VR technology, which is very popular in science, in teaching system is introduced. Based on the full investigation and comparison of the present virtual simulation teaching situation, this paper determines the tools for realizing the three-dimensional interaction of the system. The whole 3D model of transmitter and the model of some components are built by using 3D Max software, and the network interaction of 3D animation is realized by using Unity3D engine. In order to solve the bandwidth problem, we choose the best compression method for different files. Because this system involves a large number of images, video, 3D animation and other files, especially 3D animation, the data file is large. In order to reduce the impact on the transmission speed caused by too large files and lead to difficult to read, the file data in different formats are compressed separately in order to reduce the impact on the transmission speed caused by the large amount of transmission, and the transmission speed is also greatly affected by the bandwidth. Reduce the size of the file. For the components of the plane plan display, the unified use of JPEG format, and achieve its magnification and shrink display; For circuit diagram reading, the unified use of PDF format display; For the assembly and disassembly of components, 3D animation demonstration is configured. In order to reduce the size of 3D animation file and make it benefit to network transmission, streaming media transmission mode is adopted, which greatly increases the transmission speed. The image quality is not affected. According to the transmitter learning content, the system is mainly divided into introduction, principle, maintenance, fault, component, drawing materials. Students can read the detailed contents of each chapter according to the normal directory structure, combining pictures, drawings and 3D animation to understand the transmitter more concretely. Learning the use and maintenance of transmitters. Ultimately make the software design interactive and practical, support remote learning, communication and resource sharing. At present. The system has been successfully applied to the stations of the radio station, which provides convenience for the study and training of the technical personnel of each station, and achieves the expected goal of the design system.
【學位授予單位】：河北科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN837-4;G434;TP311.52

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