Research on USB2.0 transfers interface of high speed data acquisition system

Data transmission interface speed is the bottleneck of the development of high-speed data acquisition system.In order to improve the interface transmission rate of data acquisition system,data acquisition system based on USB2.0 interface transmission is designed.The structure and circuit design and fireware program and main program of the data acquisition system interface are introduced.And the slave FIFO mode transfer data is introduced in detailed.The program design of USB fireware program and main program are provided.The high speed data acquisition geography radar system sampling wave and analyzing problem based USB2.0 interface are proposed.And the sampling data should add the data head,which can invalid transfer data and control.The experimental results show that the data collection system USB2.0 interface transmission speed is 30MB/s.