基于虛擬儀器檢測技術實驗平臺的開發與應用

摘 要:采用虛擬儀器軟件開發平臺LabVIEW在NI數據采集卡以及傳感器實驗臺基礎上，研制開發了檢測技術實驗教學平臺。給出該實驗平臺的軟硬件構建方法，尤其是對平臺的實驗功能進行了詳細闡述，并通過實例驗證了該系統具有良好的實驗教學效果。同時該實驗平臺，利用LabVIEW中強大的網絡通信功能，實現了硬件設備的資源共享、數據共享以及實驗結果網絡發布，能夠最大限度地利用現有設備。不僅可以節省大量儀器設備的經費投入，而且為教學提供了一種全新的現代化教學手段。關鍵詞:虛擬儀器; 檢測技術實驗; 網絡通信; 設備共享

中圖分類號:TN33-34文獻標識碼:A

文章編號:1004-373X(2010)18-0184-04

Development and Application of Detecting Technology Experiment

Platform Based on Virtual Instrument

WANG Dong-xia， YUE Jian-hua

(School of Automation， Nanjing Institute of Technology， Nanjing 211167， China)

Abstract: An experiment teaching platform of detecting technology is developed with the software development platform LabVIEW for virtual instruments based on NI data acquisition card and sensor experimental table. The software and hardware construction methods of the experimental platform is presented. The functions of the experimental platform are expatiated. A instance verifies that the system has a good experimental teaching effect. Thehardware resource sharing， data sharing and Web publishing of experimental results were implemented on the experimental platform by the aid of the powerful network communication function of LabVIEW. The maximum use of the existing equipments can not only save a large amount of funds for teaching equipments， but also provide a modern teaching means.Keywords: virtual instrument; detecting technology experiment; network communication; device sharing

0 引 言

對于工科院校來說，檢測技術這門課幾乎所有專業都開設，該課程內容具有很強的實踐性，只有在實踐中加強實驗，才能真正掌握有關理論，并提高其操作技能。因而檢測技術的實驗教學也就顯得尤為重要。然而許多高等院校檢測實驗室中所使用的傳統教學實驗儀器以及檢測實驗存在以下幾個共同點:第一，實驗設備功能單一、固定，只能進行特定項目的實驗，實驗方案固定，學生只能按部就班地進行操作，使學生積極性和主觀能動性受到極大的限制;第二，大多數實驗室由于資金問題限制實驗設備臺套數導致實驗分多組，給實驗室老師造成繁重的教學任務，或者至少兩人一組造成一部分主動性較差的學生不去親自動手，實驗效果較差;第三，傳……