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提供一个基于USB2.0接口的大容量机车信号记录仪的高速数据下载实现方案。系统采用USB接口引擎与单片机搭配的方式实现USB接口。在对USB协议和设备架构充分理解的基础上,设计了相应的硬件电路、固件代码和上位机工作在Win2000下的设备驱动程序。对比分析,本记录仪采用USB2.0接口实现数据下载,其传输速度比通用串口快近12倍,较好地满足了大容量机车信号记录仪的高速数据下载需求。
Provide a USB2.0 interface based high-capacity locomotive signal recorder high-speed data download solutions. The system uses USB interface engine and SCM with USB interface. Based on the full understanding of the USB protocol and device architecture, the corresponding hardware circuits, firmware code and device drivers for host computer working in Win2000 are designed. Comparative analysis, the recorder uses USB2.0 interface for data download, the transmission speed of nearly 12 times faster than the Universal Serial Port, better meet the high-capacity locomotive signal recorder high-speed data download needs.