基于组态技术的虚拟仪器开发系统功能库研究

Function library research of virtual instrument development system based on configuration technology

针对VMIDS(Virtual Measurement Instrument Development System)虚拟仪器开发系统仪器功能不能共享的问题,引入组态技术改善VMIDS的功能库,使得功能库中的仪器功能可以任意组配,增强了系统的开放性。论述了基于组态技术的VMIDS虚拟仪器开发系统的功能库的设计,同时采用COM/DCOM技术以便系统功能库的扩充并为网络化虚拟仪器发展提供支持。用户设置的功能参数保存在动态链接库(DLL)建立的实时数据池中,实现了功能库数据的统一管理。

In order to solve the problem that the instrument functions of VMIDS （Virtual Measurement Instrument Development System） can not be shared, configuration technology is adopted to improve the function library of VMIDS. Through configuration technology, functions in the function library could be combined in any proper way, and the openness of VMIDS was enhanced. The design of the improved function library was described in detail. Further, COM/DCOM was used to make the enlargement of the function library convenient and support the development of networked virtual instrument （NVI）. In the new system, function parameters are saved in real-time database that constructed by dynamic linked library （DLL）, so the data of function library can be under the unified management.