基于LabVIEW与USB的虚拟仪器接口设计

Interface Design of Virtual Instrument Based on LabVIEW and USB

当前虚拟仪器得到了广泛的应用,而USB总线具有即插即用,接口简单、传送速率高等特点。基于LabVIEW与USB的虚拟仪器接口设计将两者优势结合起来,势必顺应未来测控仪器的发展。在此介绍一种接口设计方案,它采用VC++编写DLL,通过LabVIEW调用DLL,实现与USB设备进行通信。经过测试,该系统稳定可靠。基于LabVIEW和USB接口的数据采集系统具有灵活、可靠、经济等特点。

The application of virtual instrument becomes more and more widely in nowadays, and the USB interface possesses the characters of plug- and- play, flexiblely interface and high speed. So the interface design of virtual instrument which based on LabVIEW and USB can combine the two advantages,it conforms to the development of monitoring equipment. A scheme to realize the interface design is introduced. In the scheme, the DLL files by using VC＋ ＋ , with the LabVIEW called DLL files,the communication with the USB devices is realized. By testing, the system is stable and reliable. The data acquisition system which based on LabVIEW and USB has the characters of flexible,reliable and economical.