一、虚拟仪器的产生计算机科学和微电子技术的迅速发展和普及,有力地促进了多年来发展相对缓慢的仪器技术。目前正在研究的第三代自动测试系统中,出现了新的仪器概念——虚拟仪器VI(Virtual Instrument)。由于虚拟仪器应用软件集成了仪器的所有采集、控制、数据分析、结果输出和用户界面等功能,使传统仪器的某些硬件乃至整个仪器都被计算机软件所代替。虚拟仪器的基本思想是利用计算机来管理仪器、组织仪器系统,进而逐步代替仪器完成某些功能,最终达到取代传统电子仪器的目的。虚拟仪器实质上是软硬结合、虚实结合的产物,是充分利用最新的计算机技术来实现和扩展传统仪器的功能。我们知道,任何仪器基本上都分三部分组成,即数 First, the emergence of virtual instruments The rapid development and popularity of computer science and microelectronics, effectively promoted the development of relatively slow instrument technology over the years. The third generation of automated testing systems currently under study has emerged as a new instrument concept - Virtual Instrument VI. As the virtual instrument application software integrates all the functions of acquisition, control, data analysis, result output and user interface of the instrument, some of the traditional instrument hardware and even the entire instrument are replaced by computer software. The basic idea of ​​the virtual instrument is to use the computer to manage the instrument, organize the instrument system, and then gradually replace the instrument to accomplish certain functions, and finally achieve the purpose of replacing the traditional electronic instrument. Virtual instrument is essentially a combination of hardware and software, the combination of the actual situation and the actual use of the latest computer technology to achieve and extend the functionality of traditional instruments. We know that any instrument basically consists of three parts, namely the number