摘要无线通信（Wireless Communication）是一种有别于有线通信的、通过电磁波 传输信号的通信方式。为了方便人类的生活，无线通信已经得到了长足的发展， 例如近几年便携式智能移动终端的兴起。汽车防撞系统（Collision Avoidance System），是为了提高汽车驾驶的安全性的一种智能装置。它能够通过对汽车行 驶路面的情况进行监测，及时发现汽车前方可能与之发生碰撞的物体，并及时采 取一些措施，防止发生人员伤亡。72737

本文基于无线通信环境对汽车防撞系统展开研究。根据汽车防撞系统的需 求，设计出其对应的功能，包括信息采集、数据处理、执行模块、无线通信模块 四个部分。系统利用信息采集模块中的测距传感器测量车距，为了测量汽车模型 与前方障碍物之间的距离，需要建立一个测量车距的数学计算模型。信息采集模 块得到的数据反馈给数据处理端，经过处理后向执行模块发出相应的指令。在实 验中还可以通过无线通信模块直接控制小车的动作（停止、前进、转向）。根据 系统功能，选择合适的元器件，并进行硬件设计和软件设计，最后进行软硬件的 调试，结果表明系统满足设计需求。

该论文有图 15 幅，表 6 个，参考文献 36 篇 关键词：无线通信 汽车防撞系统 测距

The Design of Automotive Collision Avoidance Systems Based on Wireless Communication

Abstract Wireless Communication differs from Wire  Communication and the  way  which

communicates by electromagnetic wave, transferring the signals。 It has developed for a long time to comfort people’s daily life, for instance, the emerging of portable smart mobile terminal。 Collision Avoidance System, which installed to improve the safety of

car driving。 It can monitor the pavement behavior to find out the objects that are of high possibility to come into collision with the car and take actions to prevent the casualties。

This thesis based on the Wireless Communication environment and aims at researching the Collision Avoidance System。 It designs the corresponding functions according to the demand of the Collision Avoidance System, including the module of information collection, data processing, executing and Wireless Communication。 The Collision Avoidance System measures the distances between vehicles by distance measuring sensor。 The Math computing model is also needed to know the distance between two roadblocks。 The module of information collection will give feedbacks on the collected information to data processing terminal, after processing, it send out the corresponding instructions to executing module。 During the experiment, it can also control the actions directly, stopping, going forward and veering, through the module of communication。 According to the functions of the system , i select the appropriate components and parts to conduct the design of hardware and software, and debug the soft hard ware finally。 It turns out that the Collision Avoidance System meet the demand of design。

This paper has 15 figures, 6 tables, 36 references。

Keywords: Wireless Communication Automatic bump-shielded system of the automobile   Ranging

目 录

摘 要 I

Abstract II

目 录 III

图清单 V

表清单 V

变量注释表 VI

1 绪论 1

1。1