Data Acquisition And Processing System Of The Usb Interface Technology

Universal Serial Bus (USB) is one of the most important developments in PC peripheral interconnect technology since the introduction of serial and parallel ports in the early 1980s. The benefits of USB, such as ease of use, true plug and play, high performance, and reduced overall system cost, are just a few of the reasons this technology has gone from specification to product development in less than 2 years.At the same time, the condition around the machines in the industry field is more complicated. The requirement is increasing to make those monitoring and controlling instruments more simple and ease of use from the field engineers. And as you know,the key technology in those monitoring devices used in the industry is data acquisition and processing system's design and deployment. All of these depend strongly on the use of DSP and it self s development. How to use the latest technology to satisfy the above requirement is this papers main gain.At first, the paper introduces the protocol of USB bus in brief, and then discusses the design of data acquisition and processing system, which includes four segment, hardware design,firmware design, device driver and annlication nrosram. In hardware segment. The performance of TMS320VC33 and PDIUSBD12 firstly is described; then the hardware scheme are given in detail .The most important project is the firmware writing. The paper first shows the idea of program design and the hierarchy and then introduces the program design in detail and gives some code. The device driver and application program are presented in the last three chapters.WDM and VC are used to develop the driver and application program.This M.S. degree project's main gain is to research&develop the USB tech in DSP system, and provide a doable total solution.