Virtual instrument is a new technology in measurement field and the development of VI is cheaper, needs less developing time and has stronger expansibility.

• 虚拟仪器技术是近年来发展迅速的仪器技术,是对测试仪器的一种革新,它具有功能强大、开发周期短、开发成本低廉等独特的优点,把虚拟仪器技术应用于工程实际也是测量仪器发展的趋势;