高速公路汽车防碰撞安全距离模型的仿真研究

发布时间：2018-04-01 17:01

本文选题：防追尾模型　切入点：超车模型　出处：《安徽工业大学》2014年硕士论文

【摘要】：随着全球汽车数量的迅猛增长，智能交通在交通领域中得到了广泛的应用。但针对高速公路上常发的追尾交通事故，到目前为止没有一种汽车预警系统能够大范围普及使用。配置汽车预警系统的车辆限制在高档车上，因此需要研究一种低成本、高安全性的汽车防碰撞预警系统。高速公路的特点主要是车流量大、行车速度高，因此汽车在行驶中若有故意、非故意造成车辆碰撞或停行等情况，都会造成重大交通事故，而且事故造成的后果是大量车辆相撞、高死亡率。追尾事故是肇事的主要形式，而及时对驾驶者进行提醒和警告会大量减少追尾事故的发生。所以研究一种低成本、高安全性、实时性好的追尾预警系统相当有实用价值。文章针对以上问题提出高速公路汽车防碰撞的安全距离模型。安全距离模型包括防追尾模型、超车模型。主要研究内容：根据高速公路上汽车行驶状态，任意选择相邻两车建立防追尾模型、超车模型；分析模型中目标车、跟随车的运动状态、遇到紧急情况的制动过程；根据模型中两车制动过程推导出两车制动后不发生碰撞的最小安全距离；通过VS2010开发的汽车防碰撞仿真软件对防追尾模型、超车模型进行仿真，利用仿真实验数据分析最小安全距离与目标车、跟随车的各项运动参数的关系；对汽车防追尾碰撞系统进行设计，，包括系统通信模块、预警提示模块；鉴于ZigBee网络无线通信具有大容量网络、可靠数据传输、免许可无线通信频段、低功耗、多种组网方式、低成本、短时延、自配置与三级安全模式等特点，利用ZigBee对防追尾模型进行测试，包括ZigBee节点间通信实验、防追尾实验。实验验证了安全距离模型的有效性。
[Abstract]:With the rapid growth of the global number of cars, traffic has been widely used in the field of transportation. But for the rear highway accidents often, so far there is no a vehicle warning system can widely use. Configuration of vehicle early warning system of vehicle restrictions in luxury cars, so it needs to study a low cost, high safety and anti collision warning system of the car. The characteristics of the highway is the main traffic flow, high speed, so the driving of a car if there is intentional, inadvertent vehicle collision or stop etc., will cause serious traffic accidents, accidents and the consequences of a large number of vehicles collided, high rear end accident mortality. Is the main form of the accident, and timely warning will reduce the number of accidents and to remind drivers. So the research of a kind of low cost, high safety. A good early warning system is of great practical value.
The safety distance model of automotive anti-collision in view of the above problems. The safety distance model including anti collision model, overtaking model. The main research contents: according to the highway vehicle driving state, choose any two adjacent car to establish anti collision model, super model; analysis of the target vehicle model, the motion state of the vehicle to follow, braking process in case of emergency; according to the minimum safe distance braking two car model derived two car brake after collision; anti collision simulation software of anti collision model developed by VS2010 the car overtaking model simulation, analysis of the minimum safety distance and target vehicle using simulation data, the relationship between the parameters of the movement to follow the car the rear end collision avoidance system; the design of cars, including the communication module of the system, the warning module; in view of the ZigBee wireless communication network It has a large capacity network, reliable data transmission, unlicensed wireless communication frequency band, low power consumption, a variety of networking mode, low cost, short time delay, self configuration and three security modes, to test the anti collision model by using ZigBee, including the ZigBee inter node communication experiment, anti collision experiment. Experimental results verify the effectiveness of the safety distance model.

【学位授予单位】：安徽工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491

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