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高速公路汽车追尾防撞预警系统研究
The Research of Automobile’s Rear-end Collision Warning System on Expressway
【作者】 韩洋;
【导师】 侯文;
【作者基本信息】 中北大学 , 测试计量技术及仪器, 2008, 硕士
【摘要】 近年来,道路交通安全形势越来越严峻,交通事故给家庭、集体和国家都带来了巨大的损失,已成为世界性的严重问题。统计资料表明,在众多的高速公路交通事故中,追尾碰撞引起的事故占最多数,因此,研发一种高性能的汽车追尾防撞预警系统成为迫切的需要。论文参考了国内外诸多汽车防撞模型及研究成果,从动力学和运动学两方面详细分析了汽车的制动过程,根据汽车的运动状态建立了比较实用、简单的汽车防撞预警模型。通过对追尾碰撞事故原因的分析,提出了系统设计要求并确定了系统的设计方案。整个系统由各种传感器、数据采集电路、声光报警电路、液晶显示电路等组成,系统采用高性能的ARM7芯片S3C44B0X作为中央处理器,保证了系统工作的实时性。论文对系统所需传感器进行了分析、比较和选型;制作、调试了系统硬件部分;采用汇编与C语言结合的方式编写了系统软件,并将此软件在硬件上进行了调试;论文针对系统应用的环境,从软件和硬件两方面对系统进行了可靠性设计,从而使系统更加稳定可靠。最后,论文还通过实验对系统各项功能进行了考察,实验表明系统声光报警、抑制报警、液晶显示等各项功能基本实现了系统的设计要求。
【Abstract】 The traffic safety condition is becoming increasinglyserious in recent years. The trafficaccidents have become a worldwide problem, which make great lost to the families andcountry. The statistic shows that the accidents resulted from Rear-end Collision are in themajorityamongtheaccidentsinexpressway.ThestatisticshowsthattheRear-endCollisionisof the majority in all expressway accidents. Therefore it becomes an urgent necessity todevelopahigh-performancedCollisionWarningSystem.This dissertation conducts both the dynamic and kinematic analysis of the automobilebraking process. Referring to many research fruits in automobile anti-collision of the world,thedissertationestablishesasimpleandapplicablemodelofanti-collisionalarmsystembasedon the automobile’s movement status. By analyzing the cause of Rear-end Collision, thedissertation put forward the system requirements and then designs scheme. The whole systemconsists ofvarious sensors,datacollectioncircuit,alarmingcircuit ofsoundandlight,displaycircuitofLCDscreen.Thehigh-poweredchip-S3C44B0X ,asthecentralprocessingunit,is used to control all the circuits for improving real-time character of the system. Thisdissertation also analyzes and compares the sensors, then complete the hardware system. Thesystem software is programmed with C and assembly language and debug on the hardware.Accordingtheenvironmentoftheautomobile,manyeffectivemeasuresfromthesoftwareandhardware are adopted to enhance the reliabilityof the system. At last, experiments are carriedout on the Collision Warning System and it is confirmed that the system basically meets thedesignrequirements.
【Key words】 Rear-endCollision; CollisionWarningSystem; CollisionModel; S3C44B0X; ARM7; Reliability;
- 【网络出版投稿人】 中北大学 【网络出版年期】2008年 11期
- 【分类号】U463.6;TP277
- 【被引频次】22
- 【下载频次】751