基于单元要素的虚拟仪表平台设计方法

Approach of designing virtual instrument development platforms based on unit elements

在研究虚拟仪表构成及设计特点的基础上,提出"单元要素"组合与装配的模块化设计方法,通过可视化的交互式界面操作实现虚拟仪表设计。介绍单元要素定义、系统架构、数据通讯与控制,阐述仪表单元设计与封装、组件调用方式、动态链接库以及基于多线程技术的虚拟仪表仿真测试等内容。该方法具有开发成本低、易于维护与扩充、代码重用率高、通用性强等特点。

On the basis of studying the characteristics and constitution of virtual instruments, a modular design approach aiming to assemble and combine the unit element was proposed, and it achieved the goal of designing the virtual instrument through the operation on visual interactive interface. The definition of the elements unit, system architecture and data communication and control were described. And the contents like the designing and packaging of instrument unit, the method of component calls, dynamic link libraries, and simulating test of virtual instrument based on multi-threading technology were elaborated. The me- thod has the advantages of low development costs, and easy maintaining and expanding. Meanwhile, its code is characterized by high efficiency of reusing and optimizing and strong versatility.