【摘要】：測(cè)控技術(shù)核心在于信息采集、整理、處理、顯示和控制。儀器在其中扮演著不可或缺的角色,凡事對(duì)于測(cè)控系統(tǒng)的改良必然會(huì)涉及到對(duì)于測(cè)控工具——儀器的改進(jìn)。從20世紀(jì)50年代開(kāi)始經(jīng)歷了從模擬儀器到數(shù)字儀器進(jìn)而到總線儀器和至今的虛擬儀器的發(fā)展歷程。伴隨的便是儀器朝智能化、虛擬化、網(wǎng)絡(luò)化的方向發(fā)展。對(duì)于如何提供一個(gè)方便、精確、實(shí)用且具有兼容性的測(cè)控平臺(tái)正是本文所研究的。 本文探討了虛擬儀器的發(fā)展歷史以及技術(shù)革新對(duì)于傳統(tǒng)測(cè)控行業(yè)的影響,還有虛擬儀器將來(lái)的一些發(fā)展前景。同時(shí)為了配合上層軟件設(shè)計(jì)研究了各儀器總線的規(guī)范和協(xié)議,尤其在接口驅(qū)動(dòng)的統(tǒng)一等。在研究了虛擬儀器技術(shù)的基礎(chǔ)上,設(shè)計(jì)了一種具可互換性的虛擬測(cè)控平臺(tái),可以搭載不同儀器的虛擬軟面板。為此研究了IVI技術(shù)和VISA技術(shù)等,通過(guò)VISA平臺(tái)來(lái)屏蔽底層的I/O接口差別,通過(guò)IVI技術(shù)來(lái)實(shí)現(xiàn)硬件儀器的可互換性。本文以示波器為例,開(kāi)發(fā)出具有可互換性的虛擬示波器軟件,實(shí)現(xiàn)示波器圖形獲取處理、對(duì)硬件的設(shè)置觸發(fā)等功能,并通過(guò)與實(shí)體示波器相連進(jìn)行測(cè)試達(dá)到預(yù)期效果。本文的主要內(nèi)容包括： 1.介紹虛擬儀器的概念和特點(diǎn),敘述當(dāng)前比較主流的總線接口,并對(duì)目前主流的總線儀器與虛擬儀器互連作了說(shuō)明。清楚地描述虛擬儀器從硬件到軟件的各層關(guān)系。 2.針對(duì)IVI技術(shù)進(jìn)行詳述,從IVI整體的構(gòu)架到運(yùn)行機(jī)制,IVI引擎和配置倉(cāng)。不光從理論上了解可互換性的實(shí)現(xiàn),還從代碼和算法上實(shí)現(xiàn)可互換性功能。 3.研究VISA的體系結(jié)構(gòu),介紹VISA函數(shù)庫(kù)的常用函數(shù)。深入了解IVI與VISA之間的調(diào)用關(guān)系,在VISA基礎(chǔ)上如何編寫(xiě)IVI驅(qū)動(dòng)程序。熟練地運(yùn)用VISA資源函數(shù)管理各種接口的儀器設(shè)備。 4.設(shè)計(jì)虛擬示波器軟面板,完成示波器的數(shù)據(jù)讀取、處理、顯示,示波器的設(shè)置、調(diào)節(jié)等功能。虛擬示波器與實(shí)體示波器可通過(guò)多種接口連接,完全復(fù)制實(shí)體儀器的操作感,并添加對(duì)結(jié)果的處理保存、設(shè)置的恢復(fù)等人性化功能。
[Abstract]:The core of measurement and control technology lies in information collection, collation, processing, display and control. The instrument plays an indispensable role in it, and the improvement of the measurement and control system will inevitably involve the improvement of the measurement and control tool-the instrument. Since 1950's, it has experienced the development process from analog instrument to digital instrument and then to bus instrument and virtual instrument. Accompanied by the development of instruments in the direction of intelligence, virtualization and networking. How to provide a convenient, accurate, practical and compatible measurement and control platform is studied in this paper. This paper discusses the development history of virtual instrument and the influence of technological innovation on the traditional measurement and control industry, as well as some development prospects of virtual instrument in the future. At the same time, in order to cooperate with the upper software design, the specifications and protocols of each instrument bus are studied, especially in the unity of interface driver. On the basis of studying the technology of virtual instrument, a virtual measurement and control platform with interchangeability is designed, which can carry the virtual soft panel of different instruments. In this paper, IVI technology and VISA technology are studied, VISA platform is used to shield the difference of I / O interface, and IVI technology is used to realize the interchangeability of hardware instruments. In this paper, taking oscilloscope as an example, a virtual oscilloscope software with interchangeability is developed, which realizes the functions of oscilloscope graphic acquisition and hardware setting trigger, and achieves the desired results by connecting with the solid oscilloscope. The main contents of this paper are as follows: 1. This paper introduces the concept and characteristics of virtual instrument, describes the mainstream bus interface at present, and explains the interconnection between the mainstream bus instrument and virtual instrument at present. Clearly describe the relationship between hardware and software of virtual instrument. 2. The IVI technology is described in detail, from the overall architecture of IVI to the running mechanism, IVI engine and configuration warehouse. Not only the implementation of interchangeability is understood theoretically, but also the interchangeability function is realized from code and algorithm. 3. The architecture of VISA is studied, and the common functions of VISA function library are introduced. Understand the calling relationship between IVI and VISA, and how to write IVI driver on the basis of VISA. Proficient in the use of VISA resource functions to manage various interfaces of instruments and equipment. 4. Design virtual oscilloscope soft panel, complete oscilloscope data reading, processing, display, oscilloscope setting, adjustment and other functions. The virtual oscilloscope and the solid oscilloscope can be connected through a variety of interfaces to completely copy the sense of operation of the solid instrument, and add humanized functions such as the processing and saving of the results, the recovery of settings and so on.
【學(xué)位授予單位】：西安郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TP334.7

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