关键词：虚拟仪器、LabVIEW、滤波器
Abstract
Summary With the electronic tests and technological development, testing positive automation technology, intelligence, digital and network direction. Which digital filter technology as an important test tool has been widely used in various fields. The topic is based on figures consider wave form design software for engineering background, the acquisition of the main waveform data correlation, realize the corresponding parameter measurement. Virtual Instrument technology is computer-based instruments and measuring techniques. With the traditional instruments and technology, virtual instrument technology refers to the data acquisition equipment includes the general computer platform, According to the need to be highly efficient building up all kinds of measurement system. For most users, the main work into the software design. Virtual instrument technology breakthrough of the traditional limitations of the equipment could be many signal processing methods used in a convenient measurement, and for automatic measurement and network measurement to create conditions. First, the thesis of LabVIEW virtual instruments and associated knowledge, using virtual instrument development platform -- LabVIEW development of the software system, including the five main modules : data acquisition, records show, data playback, data processing and data analysis. Data processing module main digital filtering and windowing handle two major functions, can choose different filters and window function to adapt to different situations. The different parameters can be set up so that the signal frequency constantly changing. It is a test instruments and systems concepts and related software. Another combination of testing technology and equipment expertise introduced in LabVIEW virtual instrument filter consider test signals. As well as tertiary institutions machinery, automation and information technology-related professional students will learn courses.
