劉順國，賀文旭 (中國南車集團資陽機車廠,四川 資陽 641301)   摘要：本文結合我們開發的一套用于電工儀表檢定的虛擬儀器系統，討論了虛擬儀器系統開發過程中兩個主要問題：一是接口及通訊，二是人機界面及數據處理。計算機經GPIB總線采集各項測試數據，通過自行開發的測試軟件，實現對儀器設備的程控及各項參數設置，并對測試數據自動處理，生成檢測報告。   關鍵詞：虛擬儀器；GPIB總線；IEEE488標準；Vb.net2003   中圖分類號：TP336文獻標識碼：A文章編號：1672-4984(2006)03-0068-03   Design and realization for virtual system based on GPIB bus LIU Shunguo，HE Wenxu (China South Locmotive and Rolling Stock Industry Corporation Ziyang Locomotive Works,Ziyang 641301,China)   Abstracts: According to a virtual apparatus system for electric apparatus verification developed by ourselves, this paper discussed two problem existed in the process of designing virtual verification system. The first problem is interface and communication. The second problem is man-machine interface and data processing. The computers collect various measurement data by GPIBbus,  realize program controlled and parameter setup by measurement software developed by ourselves, auto-process measure data and produce measurement report. Key words: Virtual apparatus; GPIB bus; IEEE488 standard; Vb.net2003