基于LabVIEW的虚拟信号发生器的设计

摘要

The functions of traditional signal generators are realized completely on hardware. Its functions can not be changed once they are fixed.And the cost of the generator for purchasing and repairing is so high.Therefore,according to the characteristics of virtual instruments, a virtual signal generator is designed with LabVIEW. The virtual signal generator can generate some waveforms such as triangle wave,sinewave,saw tooth wave, square wave, noise waveform and arbitrary formula signal .The signal generator has a friendly and beautiful interface, simple operation and quick response,etc.The security of the generator is greatly improved on account of the login system.%传统的信号发生器的功能完全靠硬件实现，其功能单一，一旦确定就不能更改，而且用户的购置和维修费用多。于是根据虚拟仪器的特点，利用LabVIEW开发工具，设计了一种虚拟信号发生器。该信号发生器能够产生三角波、正弦波、锯齿波、方波和噪音波等信号，以及任意函数的公式波信号。该信号发生器具有界面美观友好、操作简单、响应速度快等特点，并且设置了登录系统，大大增加了其安全性。