基于实时图像和USB2.0接口的汽车行驶记录仪  

Vehicle Traveling Data Recorder Based on Timely Image and USB2.0 Interface

作　　者：代东林[1] 马轶男[1] 沈志熙[1] 

机构地区：[1]重庆大学自动化学院,重庆400044

出　　处：《仪表技术与传感器》2011年第3期34-37,共4页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(69674012);重庆市自然科学基金项目(2006BA6016)

摘　　要：该记录仪用于记录交通事故发生时车辆前方的图像资料,为事故的现场判断提供及时可靠的证据。其依靠车载CCD传感器采集数据,SAA7113进行模数转换,SDRAM与FLASH二次存储结构实现图像数据的存储,采用USB2.0接口完成图像数据向PC机的传送。文中介绍了系统结构、各模块的硬件电路设计以及软件工作流程与实现方案。实验表明:数据采集实时,传输效率高,系统稳定性好。Recorder was applied to record image data of vehicle front when accident was happening,providing timely and reliable proof for judgment of accident scene.It collected data depending on CCD sensor and ADC on SAA7113.The double structure made by SDRAM and FLASH was used to memory data and USB2.0 interface to send data to PC.This paper introduced the system structure,hardware design of each module,work process of software and implementation scheme.Test demonstrated that data was collected timely,transported efficiently and the recorder worked steady.

关 键 词：汽车行驶记录仪 实时图像 USB2.0接口 FPGA 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]