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.%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.
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