Design And Realization Of The Virtual Driving System For The Training And The Road Test Of The Large Overpass In Beijing

With the development of city and economic, our country has come into theautomobile age. Because of the increasing numbers of the car, more and more peoplewant to learn how to drive and the driving schools have to accept more and moreleaners every year. Usually, the road test is chosen on the road which is fewer cars andfar away from city center, however, the drivers are still difficult to overcome theoverpass diversity and complex traffic conditions. In order to solve the problems, forinstance, how to improve the effect and value of the road test, how to reduce the costand automobile exhaust emissions, how to provide more driving environment, thepaper has the effective solutions.Based on the research efficiency and conclusions authenticity during the process,the paper proposes the structure of virtual driving system from the macroscopiclevel, which combined with a variety of techniques of multimedia technology, virtualreality technology, and human-computer interaction technology. Not only providingthe different diversification of the road, but also the design of the system is achieved.It can reduce the times of the cars that go wrong roads as much as possible andreduce the traffic jams, meanwhile, it also improves the quality of the road test.The complex data is converted to a visual, operational, and real-time interactiveenvironment through the computer, and the environment is the virtual reality. Virtualdriving system is able to provide real driving environment simulation, allowing thedriver to get the same feeling of driving real car driving operation and drivingenvironment. In order to enhance the immersion, interactivity and realism, thethree-dimensional modeling of the virtual scene which combines vehicles, bridges,roads and surrounding buildings has to display its basic characteristics and geometryof the objects. The objects need to show the perceived, real, three-dimensional effects,meanwhile, all the scene should be based on actual construction data, such as theoverpass the length width and span. The objects in three-dimensional space have topresent the state that change with the viewing angle so that it can enhance virtualdriving realistic visual effects. In addition, the virtual driving system needs to connectwith an external input device so that it can achieve to control the vehicle operating inaccordance with the physical properties, simulate the driving operating environment and braking systems and realize the interactive virtual interaction and a series ofoperations on the control of the body driving, making the virtual driving systeminteractive...