基于usb的虚拟仪器的设计-检测技术与自动化装置专业论文.docx

．墨型三些奎兰堡主兰堡笙奎 ．墨型三些奎兰堡主兰堡笙奎 至主竺!堡塑壅垫垡委堕堡!± Abstract Withthe developmentof society andtheimprovementofthe sciencetechnology,the capabilities of the inslrnments are required better．Great changes have been taking place on the measure instruments a5 the resutt of rapidly developing integrated circuit and computer technology．As a representative ofmodern instruments，Virtual Instruments(VI) changed the idea of traditional instruments．The computer technology has combined with measure technology by making USe of the snong software and hardware function of computer which makes kinds of measure instruments based On the platform of computer being widely used for their low cost and convenient use．According to making use of USB，data acquisition Can be more valid，more economic and more expansive than Iradilit)nal methods． After checking plenty of national and international technology reports and papers 讯recent years．we have made some research on USB and the Virtual Instruments based onUSB． Firstly,this thesis inl】_oduces the developing tandeney,characters and technology of interface of the USB and its communication protoc01．Then，it describes the developing tendency of Virtual Imtruments．Vtrtual Imtmments VS lradifionai inslruments and system composing of Virtual Instruments．After that，it illuminates the hardware charactersandthedesignmethodofthedata acquisitionsystem basedOUUSR．Foliowed， it introduces the design of the sotRware about the data acquisition system based on USB． At last,this thesis introduces the design of the software about the platform of Vktual lnstruments． Keywnrds：Virtual Insmaments(vD，Universal Serial Bus(USB)，digital processing， data acquisition，communication protocol 贵州工业大学硕士学位论文 贵州工业大学硕士学位论文 基于USB的虚拟仪器的设计 绪 论 随着科学技术的迅猛发展，现代社会对仪器性能的要求越来越高。在迅速发展 的集成电路技术和计算机技术的推动下，以虚拟仪器(Virtual Instrument)为代表 的新型仪器改变了传统仪器的思想。虚拟仪器通过应用程序将计算机与功能硬件结 合起来，把计算机强大的运算、存储、通信能力与功能硬件的测量和转换能力融为 一体，形成多功能、高精度、可灵活组合并带有通信功能的测试平台。在电子测量 中它可以代替传统的示波器、逻辑分析仪、信号发生器和频谱分析仪等；在工业控 制系统中可以代替常规的调节器