电压采集系统设计 毕业设计 毕业论文及文献综述_精品.doc

摘 要 为了充分利用计算机资源进行数据采集及分析，设计了一种数据采集系统。该系统使用虚拟仪器技术，可实现实时数据采集、存储以及对历史数据的复现和结果显示。与传统数据采集系统相比，该系统具有成本低、控制容易、采样精度高、使用方便灵活等特点。 本设计借助LabVIEW软件来控制整个DAQ系统，利用开关、旋纽、随机数产生器、波形产生器等对象端子仿真外界环境模拟信号的变化，系统能实时的通过相应的端子将变化的信号采集进来，通过交互式的图形化前面板来控制系统，数据采集完成之后，再利用功能强大的数据分析程序，若现场数据超出设定值实现报警提示功能，再将原始数据转换成有意义的结果，达到利用虚拟仪器的技术仿真DAQ系统。除任意波形发生器、示波器等通用测量与分析仪器外，各个领域都存在不计其数的特殊参量测量要求，如果建立了虚拟仪器平台，那么只要按照测量原理，借助信号分析与处理技术编制软件程序，就能设计建造各种不同的测试仪器。 关键词：数据采集； 虚拟仪器； VI； 图形化界面 Abstract The system was designed for data acquisition and analysis through computer. By using the technology of Labview, the system could realize real-time data acquisition, data memory, and signal recall and display the result. Compared with traditional data acquisition, this data acquisition system based on Labview had characters of low-cost, high sampling precision, convenient and flexible in use. With this design LabVIEW software to control the whole DAQ system, use of switches、Mechanics、random number generator, waveform generators and other objects outside terminal simulation environment analog signal changes,The adoption of real-time system corresponding to the terminal will change the signal acquisition in, through an interactive graphical front panel to control the system, after the completion of data acquisition,Re-use powerful data analysis procedures, if the data beyond setting the scene realization prompted alarm function, and then the raw data into meaningful results, achieved using virtual simulation technology equipment DAQ system. In addition to arbitrary waveform generators, oscilloscopes, and other common measurement and analysis instruments, there are countless areas of special parameters of measurement requirements, if a virtual instrument platform, then so long as measured in accordance with the principle of using signal analysis and processing technologies of software programs , Will be able to design the construction of a variety of test equipment. Key words：Data Acquisition; Virtual Instrumentation; VI; Graphical I