基于并行接口的虚拟仪器测量系统设计

虚拟仪器是以计算机为测量平台，利用基于计算机的功能化硬件模块和专用计算机软件构成的电子测量系统．用户可以在计算机平台上根据测量任务的需要来定义和设计仪器的测试功能，其实质是充分利用计算机来实现和扩展传统仪器功能．利用并行接口采集数据的优点是传输速度快，电路设计简单，安装方便．本文主要研究虚拟仪器开发平台LabVIEW上的虚拟仪器测量系统的设计．

Design of virtual instrument measure system based on parallel port

Virtual instrument is on the platform of computers and is an electronic measure system made up of functional hardware modules and special computer software on the basis of computers. Users can define and design the measure functions of the instruments according to the needs of the measure assignments and its essential is to make good use of computer to achieve and extend the functions of the traditional instruments. The advantages of data acquisition using parallel port are the fastness of transmission, the simpleness of designing the circuit and the convenience of installment. This subject mainly researches the design of virtual instrument measure system on the platform of virtual instrument development LabVIEW.