【摘要】 为了满足不同测量的要求传统的电压表分别做成独立的仪表,包括峰值电压表、平均值电压表和有效值电压表。在此,提出采用虚拟仪器同时实现三种示值电压表的方案;介绍了虚拟仪器软件平台LabVIEW的特点。对虚拟数字电压表的设计和实现进行了详细描述,包括基于LabVIEW 8.2的虚拟信号发生器的实现过程,它能产生正弦、方波、三角波及由输入数学公式确定的复杂自编辑波形。最后,对设计的虚拟电压表运行结果进行分析,验证了虚拟电压表设计方法的正确性。更多还原

【Abstract】 Custom voltmeters include the peak-value meter,the average meter and the RMS meter,they are made of instruments independently for different requirement.A scheme that integrated these three kinds of voltmeter using virtual instrument and LabVIEW are introduced.The design and realization of virtual voltmeter are described in detail,including the realization of virtual signal generator based on LabVIEW8.2,this signal generator can genetate the waveform of sine,triangle,square and complex self-editable waveform determined by the input formula.The operating result is discussed to validate correctness of the design method of virtual instrument.更多还原