【作者】 罗蓬；

【导师】 苗长云；

【作者基本信息】 天津工业大学 ， 信号与信息处理， 2008， 硕士

【摘要】 随着我国经济的快速发展,人们的生活水平不断提高,汽车的数量也在急剧增加。汽车数量的剧增以及各种不安全因素,导致了我国交通事故率居高不下,交通事故的责任认定已成为重要问题。目前,交通事故的责任认定是依靠事故现场遗留痕迹和状况来分析、判断、认定事故的责任,不能再现发生事故时的状况,造成交通事故责任的误判或者不能判定交通事故的责任。另外,为了保证汽车驾驶员规范操作和公共汽车人身、财产安全,需要实时监测和记录车内状况。因此,需要一种可以记录汽车内外状况的图像的记录仪。本文研制了一种车载图像记录仪。在总体方案设计的基础上,采用嵌入式ARM9微处理器设计了车载图像记录仪的硬件;实现并优化了JPEG图像压缩编码的算法;在ARM9微处理器硬件平台上移植了嵌入式LINUX操作系统;在ADS软件平台下设计了车载图像记录仪的软件,并进行了试验和调试。该记录仪能够循环存储汽车运行的图像数据,记录汽车行驶过程中车内外的状况,为交通事故责任认定提供依据,提醒、督促驾驶员安全驾驶,保证公共汽车人身、财产安全,提高交通运营部门的管理水平。另外它还可以用于在汽车碰撞试验中的数据采集进行科学研究。该仪器在汽车交通领域具有重要的应用价值。更多还原

【Abstract】 With China’s rapid economic development, people’s living standards continue to improve. There is also a dramatic increase in the number of automobiles, which, along with many unsafe factors, has lead to a high traffic accident rate. The authentication for the responsibility of traffic accidents is becoming more and more important. At present, the authentication relies mostly on the trace at the spot and is unable to reproduce the accident, which will result in an erroneous judgment of the accident. In addition, to ensure that drivers can drive safely, real-time monitoring and recording are necessary. Therefore, an image recorder is needed to record the inside and outside situation of the car.An Auto’s Image Recorder is developed in this paper. Based on the overall plan, the Recorder’s hardware is designed using ARM9 microprocessor. The JPEG image compression algorithm is realized and optimized. The embedded LINUX operating system is transplanted on ARM9 microprocessor hardware platform. The Recorder’s software is designed on ADS software platform, and testing and debugging for the software are also executed.The Recorder can store the image data of vehicle’s driving process in cycle, record the driving environment, give assistance to Traffic Management Department for authenticating the responsibility of traffic accidents, supervise and urge the driver to drive safely, guarantee the personal and property safety on the bus, and improve the management level of Traffic Operation Department. It can also be used for data acquisition in scientific experiments such as vehicle crash. The Recorder has significant application values in vehicle traffic field.更多还原