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为了加强对交通车辆和司机的科学管理与监督,探讨了行驶记录仪的总体结构,提出了以SL811HST为USB接口控制芯片的主机/从机设计方案。概括地阐述了USB总线的传输协议和FAT16文件系统搭建,详细讨论了基于SL811HST的U盘的制作流程。对于汽车行驶记录仪的数据记录和传输,提供了一个可以参考的优异方案。该方法已经在汽车行驶记录仪中得到实际应用,提高了交通管理部门获取数据的灵活性和方便性。
In order to strengthen the scientific management and supervision of traffic vehicles and drivers, the overall structure of the tachograph was discussed and a host / slave design scheme with SL811HST as the USB interface control chip was proposed. Summarizes the USB bus transfer protocol and FAT16 file system to build a detailed discussion of the production process based on SL811HST U disk. For the car tachograph data recording and transmission, provides a reference for the excellent program. This method has been put into practical use in a car tachograph to improve the flexibility and convenience of the traffic management department in obtaining data.