Usb-based Biological And Functional Analysis Of The Implementation And Application Of Data Acquisition System

The USB (Universal Serial Bus) is specified to be a standard extension to the PC architecture, which focuses on PC peripherals. It is characterized by ease-of-use for PC peripheral expansion, low-cost solution that supports transfer rates up to 480 Mb/s etc.In this paper, a data collection system will be introduced based on USB 2.0. According to the synchronous requirement of the system, the functional control chip Cypress CY7C6801 is selected. The paper focuses on the design of universal serial bus driver based on WDM (windows driver model). Besides, the discussion of synchronous problem has also been brought forth.The data collection system includes the hardware and software design. In this paper how the USB driver is realized will be introduced, which is based on the WDM (Windows Driver Model). Firstly, the standard structure of windows operating system will be illustrated to show what function the USBD plays in a computer system. Secondly, the device object and the structure of the WDM will be introduced. Thirdly, a typical WDM will be shown. Then an example of USBD based on WDM for Cypress 68013, which is composed of 4 subprograms, will be shown. Finally, the driver has to be installed into the operating system with an INF file for it. As for the discussion of synchronous problem, a FIFO has been added to the system.