虚拟信号测量仪的设计与开发

Design and development of virtual signal measurer

本文介绍了在Lab VIEW的基础上开发和设计虚拟信号测量仪的过程,并成功地进行了运行检测。虚拟信号测量仪主要有2部分功能:测量电信号(如电压)和测量非电信号(如温度)。电信号部分显示器可以直观地显示采集的波形,并通过相应的函数模块处理,得到波形的直流分量、标准频率、峰值、平均值和有效值。调节电信号的参数设置,显示的波形和各项结果会作相应的变化。而且,当信号的幅值超过所设定的量程时,仪器会报警。非电信号部分的显示器按时间顺序以波形的形式显示所测得的值的历史变化趋势,并得出当前时间段信号的最大、最小和平均值。

The paper introduces the process of design and development of the virtual signal measurer based on LabVIEW , and carried on the successful examination. The main function of the virtual signal measurer has two parts, Surveying the electrical signal （such as vohage） and the non-electric signal （such as temperature）. Not only the screen of the electrical signal partial can display the signal it gathered distinctly , but also the measurer can obtain the direct component, the standard frequency, the peak value, the mean value and the effective value of the signal by processing with the corresponding function modules. Adjusting the parameters of the signal, the waveform and the data will be changed accordingly. In addition, the instrument can give an alarm when the peak value of the signal surpasses the measuring range. The screen of the non-electric signal part displays the historical tendency of the signal with a waveform according to the time order, and we can also obtain the maximal value, the minimal value and the mean value of the current time.