The Research Of Mass Data High Speed Transmission Technology Base On Buoy

In the underwater acoustic positioning system, in order to facilitate the subsequent data analysis and processing, it is frequently required to latch vast amounts of raw signal data during the experiment, while it will cost too much valuable time transferring data from the buoy to the host by serial port and other common way.In the design of this topic,we choose USB2.0 interface as the communication connection between the buoy and the host and select FPGA as the main controller on the hardware, which will not only program front-end AD for data acquisition,but also control NAND Flash chip and USB2.0 chip to read and write.At the same time, against the hardware system it is successful to modify the necessary drivers for PC and develope user application.In the performance,it costs less time for the data return.Base on the design of the topic,this thesis firstly introduces the design of hardware circuit overall program and selection of a variety of chips.On the basis of the design about hardware circuit overall program,the thesis describles the method of the design about the FPGA program as main controller and Firmware program.Following,the thesis not only describles the modification of device driver and the development of user application,but also gives the method of the speed test for the data return of this topic and the problem,which we should pay attention to in the process of design and debugging.In the process of test,the speed can reach 30MByte/s,which successfully enhance the transmisson speed of mass data and cut short the cost time for data return.