基于LabVIEW的虚拟任意信号发生器设计

Virtual Arbitrary Waveform Generator Design Based on LabVIEW

为了解决传统的专用仪器开发难度大、周期长、成本高的问题,提出并实现了采用虚拟仪器技术实现的任意信号发生器,不但降低了开发成本,节省了开发时间,并且可以和其他虚拟仪器构成一个完整的实验系统而无需添加其他硬件产生信号输出供其他仪器使用。主要利用LabVIEW编程,在计算机内产生信号的数据,通过D/A模块将产生的数据按照一定的速率输出,从而得到连续的模拟信号波形。用户可以通过此虚拟任意信号发生器自己编辑波形,从而在真正意义上实现任意波形发生器功能。

The development of traditional dedicated instrument is difficult, long cycle and high cost. In order to solve the problem, proposed and implemented the development of arbitrary waveform generator using the virtual instrument technology. It not only reduces development costs and saves development time,but also constitutes a complete experimental system combined with other virtual instruments without adding additional hardware to produce the signal output for use by other instruments. The project is mainly programmed using the LabVIEW. Signal data is created in the computer and then it could acquire continuous analog signal waveform through the D/A module by certain data output rate. Virtual arbitrary waveform generator designed to allow users to edit the waveform,achieving a Irue sense of the arbitrary waveform generator capability.