Design And Development Of The High Speed Data Sampling System Based On FPGA

With the continuous development of microelectronic technology, high speed data sampling system achieve a wide range of applications in the network, communications, industrial control and other fields, the signal processing speed and accuracy requirements are also higher than before. With a real hot-swappable, high performance and low system cost advantages, USB2.0is a new high-speed, serial communication standard. FPGA is a programmable logic device, because of high speed, high integration, programmable access, it get a rapid development. A high-speed data sampling system based on USB2.0and FPGA is introduced in this paper.Through the internal high-speed AD interface module, data is received by FPGA as the main system controller. FPGA can handle those data according to some necessary treatment, then it uses the internal USB2.0interface module to transmit data into USB2.0chip. Finally, through the USB2.0bus, the data are read into the computer storage and displayed.Firstly in this paper, it gives the overall design scheme. Secondly, it gives the specific high-speed hardware design, including the power supply circuit, USB2.0interface circuit, FPGA circuit, high-speed AD interface circuit, filtering and shaping circuit. Thirdly, it gives the whole FPGA software design, the FPGA development methods, processes and related software are introduced in the front, and on this basement the main FPGA program module is designed. then USB2.0communication module is designed which includes USB2.0communication process, USB2.0firmware, USB driver and PC software development. Finally, we build an experimental platform to analyze the experimental data.