【摘要】：汽車交通是由人、汽車和環(huán)境構(gòu)成的一個復(fù)雜的系統(tǒng)。只有這三個要素協(xié)調(diào)工作,才能使這個系統(tǒng)充分發(fā)揮安全機(jī)能。在由人—車—路組成的交通系統(tǒng)中,只要汽車仍有人來駕駛,就仍可能發(fā)生交通事故,因此探究交通事故產(chǎn)生的原因是一個復(fù)雜的問題。虛擬現(xiàn)實技術(shù)具有可視化、人機(jī)交互、可重復(fù)性、低成本等特點,利用虛擬現(xiàn)實技術(shù),可以對交通事故這一復(fù)雜事件進(jìn)行深入直觀的再現(xiàn),因此可以為研究交通事故發(fā)生的原因提供一個方便、高效的手段。本文以車輛碰撞事故為研究對象,以Multigen Creator三維建模軟件和Vega Prime實時驅(qū)動軟件為平臺,建立車輛碰撞事故視景仿真系統(tǒng),實現(xiàn)車輛虛擬漫游與碰撞事故的再現(xiàn)。本文主要內(nèi)容如下所示:1.采用Multigen Creator軟件實時可視化三維建模軟件,對汽車和事故現(xiàn)場環(huán)境分別建立三維模;分析場景的建模過程,并深入研究Multigen Creator軟件的建模關(guān)鍵技術(shù)及優(yōu)化技術(shù),從而平衡視景仿真系統(tǒng)的實時性和逼真性。2.根據(jù)車輛事故現(xiàn)場圖和事故鑒定報告,利用Matlab工具的多項式擬合算法,對車輛碰撞后的運行軌跡進(jìn)行擬合,得出車輛碰撞過程中運動軌跡上各個位置點的坐標(biāo),為車輛碰撞再現(xiàn)提供車輛行駛數(shù)據(jù)。3.使用Vega Prime實時仿真軟件,在Lynx Prime界面中構(gòu)建系統(tǒng)的初始框架,研究虛擬場景的構(gòu)建、碰撞的檢測、視點的變換等;利用Lynx Prime的Path Tool模塊建立車輛行駛路線,使不同車輛按不同路線同時行駛,并實現(xiàn)碰撞響應(yīng)。
[Abstract]:Automobile traffic is a complex system composed of people, cars and environment. Only by coordinating the three elements can the system make full use of its security functions. In the human-vehicle-road traffic system, traffic accidents may still occur as long as the car is still driven by people. Therefore, it is a complex problem to explore the causes of traffic accidents. Virtual reality technology has the characteristics of visualization, human-computer interaction, repeatability, low cost and so on. Using virtual reality technology, the complex event of traffic accident can be reproduced in depth and intuitively. Therefore, it can provide a convenient and efficient means to study the causes of traffic accidents. In this paper, taking vehicle collision accident as the research object, taking Multigen Creator three-dimensional modeling software and Vega Prime real-time driving software as the platform, the visual simulation system of vehicle collision accident is established to realize the reproduction of vehicle virtual roaming and collision accident. The main contents of this article are as follows: 1. The real-time visualization three-dimensional modeling software of Multigen Creator software is used to establish the three-dimensional model of automobile and accident scene environment respectively. In order to balance the real-time and fidelity of scene simulation system, the modeling process of scene is analyzed, and the key technology and optimization technology of Multigen Creator software are deeply studied in order to balance the real-time and fidelity of scene simulation system. According to the scene diagram of vehicle accident and accident appraisal report, by using the polynomial fitting algorithm of Matlab tool, the running trajectory of vehicle after collision is fitted, and the coordinates of each position on the track of vehicle collision are obtained. Provision of vehicle travel data for vehicle collision reproduction. 3. Vega Prime real-time simulation software is used to construct the initial frame of the system in the Lynx Prime interface, to study the construction of virtual scene, collision detection, viewpoint transformation and so on. The Path Tool module of Lynx Prime is used to set up the vehicle route, so that different vehicles can travel at the same time according to different routes, and the collision response can be realized.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U491.3;TP391.9

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