摘要：由于车辆侧翻给国家带来了巨大的经济损失,所以研究车辆侧翻的预警方法已经变成了减少交通事故次数与财产损失的重要手段。车辆侧翻的有可能是由于车速过快也有可能是因为车辆转向过度,所以我们要着手研究车辆转向系统性能对车辆的侧翻的影响。但对于车辆侧翻问题,目前还没有较为可靠的预警系统。传统的车辆侧翻预警系统只能预警车辆急转弯时侧向加速度过大引起的侧翻，无法预警因道路不平引起的车辆侧翻。目前，国外车辆稳定性方面的技术的快速发展，已经为车辆安全性能的提高做出了极大的贡献。而我国的车辆防侧翻方面的研究还不成熟。

   通过综合分析国内外车辆防侧翻预警的各种文献,我得出了一种理论上的车辆防侧翻预警算法。预警算法通过参考网上已有的车辆侧翻模型，来得到某段时间内车辆横向加速度的绝对值，以及车辆行驶过程中的倾角与理论预警的阈值相比较，从而实现功能，实地测量后发现该算法能够在一定程度上预警汽车侧翻。

关键词  车辆侧翻  预警  横向加速度 倾角 阈值

毕业设计说明书外文摘要

Title   Research on Anti - dumping Safety of Automobile Based on Vehicle Network Environment        

Abstract：As the vehicle rollover to the country has brought huge economic losses, so the study of vehicle rollover early warning method has become an important means to reduce the number of traffic accidents and property losses. The rollover may be due to the speed of the vehicle is too fast may also be because the vehicle turned too much, so we have to study the vehicle steering system performance on the impact of the rollover of the vehicle. But for the vehicle rollover problem, there is no more reliable early warning system. The traditional vehicle rollover warning system can only alert the vehicle to sharp turn when the lateral acceleration caused by excessive rollover, can not be predicted due to road caused by uneven vehicle rollover. At present, the rapid development of foreign vehicle stability technology has already made great contributions to the improvement of vehicle safety performance. And our country's vehicle anti-rollover research is not yet mature.

Through a comprehensive analysis of domestic and foreign vehicle anti-rollover warning of various literature, I have come up with a theoretical vehicle anti-rollover warning algorithm. The early warning algorithm obtains the absolute value of the lateral acceleration of the vehicle for a certain period of time by referring to the existing vehicle rollover model on the Internet, and compares the inclination angle of the vehicle during the process with the theoretical warning threshold to realize the function. After the field measurement, The algorithm is able to alert the car to some extent.

Keywords  vehicle rollover  warning horizontal  acceleration  angle of inclination

目   录

1  引言 1

1.1  研究背景及意义 1

1.2  国内外研究情况 1

1.3  设计及优化 2

2  车辆侧翻因素的研究 4

2.1  利用侧向加速设定阈值 4

2.2  利用倾斜角度设定阈值 4

2.3  利用横向载荷转移率设定阈值 4

2.4  本系统设定阈值的方法 5

3  Arduino原理及应用 7

3.1  Arduino简介 7

3.2  Arduino特点 7

3.3  Arduino结构 8

3.4  Arduino应用 9

4  MPU6050模块与Arduino单片机系统的通信 12

4.1  MPU6050模块通信系统设计步骤 12

4.2  Arduino和MPU6050的连线与数据传输 12

4.3  MPU6050模块寄存器地址 13

4.4  加速度传感器和三轴陀螺仪 14

4.5  Roll角，Pitch角与Yaw角的计算 15

5  数据的无线输入和输出 19