Based On USB Data Acquisition Card Design And Application

This paper describes the design of a data acquisition system based on USB.With the advance of the client's requirement on data collection of a system, as a late-model interface technology, USB is well accepted by vast clients because of its simplicity and high speed.The system using the USB interface chip with on-chip microprocessor (Cypress EZ-USB FX CY7C68013) controls the data acquisition process and communicates with the computer. Through the man-machine interface clients can send commend and data can be printed. With good understanding of USB protocol and device truss, the system is design by using USB instead of other buses. The hardware design includes the communication between the controller and computer, the data acquisition part, I/O extension and the interface between them. The software program mainly includes the firmware code in the controller, functions for clients with DLL encapsulation and the control panel design.