Development And Application Of Data Acquisition & Control System Based On USB

USB is a type of computer bus which increasingly prevails in recent years. With USB having many advantages ,the research of application about USB in many fields is developing. In the field of data acquisition, data acquisition devices based on USB not only have the advantage of speed on data acquisition, being conveniently expanded,but also are able to be applied to more broad fields with PNP function.The paper firstly reviews different types of data acquisition system, then after brief introduction of USB 1.1 protocol, a set of design scheme of data acquisition and control system based on USB is put forward. In the third chapter, the hardware design is detailedly introduced and in the fourth chaper, the software design is detailedly introduced,which includes three parts, fireware software design,USB device driver design and PC application design, each part includes detailed steps of development .In the fifth charpter,the article detailedly discuss how the scheme is applied in biologic signal collection and process system ,which is a applied example of data acquisition and control system based on USB by the subject group and is also a part of task assumed by the subject group.