Abstract: This paper briefly introduces the LabVIEW open virtual instrument development platform, discusses in detail the design method of a virtual phase difference meter, and presents the test experimental results.
Keywords: Virtual instrument; LabVIEW; Phase difference
With the rapid development of computer technology, microelectronics technology, and electronic testing technology, a new type of testing instrument, the Virtual Instrument (VI), has emerged. This concept was first proposed. This instrument, supported by hardware, fully utilizes the unique intelligent functions of computers, such as computation, storage, retrieval, recall, display, and file management. It software-izes the specialized functions of traditional instruments, integrating them with the computer. This creates a completely new instrument that is identical to traditional instruments in appearance and function, while fully leveraging the intelligent resources of the computer. The main functions of a virtual instrument consist of three parts: data acquisition, data testing and analysis, and result output and display. Data analysis and result output can be entirely accomplished by a computer-based software system; therefore, by providing additional data acquisition hardware, a computer-based measuring instrument can be constructed.
I. Graphical Software Development Platform
Lab's graphical programming environment is primarily used for data acquisition, data analysis, testing, and instrument control. It shares many similarities with traditional programming languages, such as similar data types, data flow control structures, program debugging tools, and hierarchical and modular programming features. However, the biggest difference lies in the fact that traditional programming languages use text-based languages.
Details: Development of a Virtual Phase Difference Meter Based on LabVIEW
