基于LabVIEW与动态链接库的光栅尺位移虚拟示波器的设计

Design of displacement measurement for grating virtual oscilloscope based on labVIEW and dynamic link library

光栅尺是一种高精度的位移检测装置,光栅尺可以将位移信号转换为计算机可直接采集的数字或脉冲信号。本文设计了一种虚拟示波器,设计采用图形化的编程语言LabVIEW编写,软件设计的核心技术采用了将LabVIEW与外部代码进行连接的动态链接库(DLL)机制。利用此项虚拟仪器技术设计的虚拟示波器,可以很好的将光栅尺位移传感器测得的数据显示在计算机屏幕上,并进行更加复杂的波形运算或者运动控制。该项技术已成功运用到实际工作中。

Grating is a kind of displacement measurement equipments with high precision, which can convert the displacement signal to digital or pulse signal that can be acquired by computer directly. This paper designs a virtual oscilloscope which uses graphical LabVIEW programming language, and links it with the exterior codes by DLL （dynamic link library） as its core technology of software design This is efficient and easy, and can be enhanced with other Windows applications between data sharing capabilities.