【正文】 of interface consumes many resources of the FPGA (logic and input/output pins) and limits the physical distance between the interconnected systems. On the opposite side, serial/parallel munications interfaces limit the binary rate of the transference but consume less logical and input/output resources and permit the physical isolation between devices. This last characteristic is important for the implementation of portable instrumentation and also isolate the acquisition hardware from the noisy environment of general purpose puters. By this reason, the developed system actually implements the standard IEEE488 (ECP mode) as the munication interface with the puter. 中原工學(xué)院信息商務(wù)學(xué)院外文翻譯 14 4. Conclusions Several prototype boards using Xilinx (XC400E) and Altera (FLEX10K) were developed for the implementation of a virtual logic (state and timing) analyzer. A performance of more than five was obtained over virtual instruments implemented using a mercial data acquisition board. The generation background of virtual instrument Today we are in a highly developed information society, which require a limited time and space to achieve a large amount of information exchange, inevitably bring about the rapid increase of information density， required the electronic systems have a faster speed and more powerful function for information processing. On the one hand the development of electronic technology and market requirements objectively make the test instrument develop to the direction of automation and flexible, On the other hand, the electronic technology and market development also make virtual instrument possible. In this situation, the virtual instruments based on microputer gradually bee a reality, its appearance and extensively use provide an excellent model for the design of test system and allows engineers more powerful and flexible in measure and control. 2 、 The concept of virtual instrument Virtual Instruments (Virtual Instrument, referred to as VI) concept is first proposed by the National Instruments (NI) in 1980s39。 信號(hào)發(fā)生器 (signal generator)又稱信號(hào)源或振蕩器，是一種能提供各種頻率、波形和輸出電平電信號(hào)，常用作測(cè)試的信號(hào)源或激 勵(lì)源的設(shè)備。測(cè)控儀器將會(huì)向高效、高速、高精度和高可靠性以及自動(dòng)化、智能化和網(wǎng)絡(luò)化的方向發(fā)展。 32bit 的編 譯器編譯生成 32bit 的編譯程序，保證用戶數(shù)據(jù)采集、測(cè)試和測(cè)量方案的高速執(zhí)行。虛擬儀器具有性能高、擴(kuò)展性強(qiáng)、開發(fā)時(shí)間短、無縫集成等優(yōu)勢(shì)。 虛擬儀器的產(chǎn)生背景 當(dāng)今 我們處于一個(gè)正在高度發(fā)展的信息社會(huì)，要求在有限的時(shí)空上實(shí)現(xiàn)大量信息的交換，必然帶來信息密度的急劇增大，要求電子系統(tǒng)對(duì)于信息的處理速度越來越高，功能越來越強(qiáng)，這使得系統(tǒng)結(jié)構(gòu)日趨復(fù)雜。對(duì)于邏輯分析儀為例，觸發(fā)模式檢測(cè)邏輯必須在硬件中實(shí)現(xiàn)更好性能的同時(shí)，數(shù)據(jù)格式的數(shù)據(jù)轉(zhuǎn)換（裝配，拆卸），可以在計(jì)算機(jī)上完成。這種內(nèi)存塊通過計(jì)算機(jī)接口孤立地轉(zhuǎn)移數(shù)據(jù)采集的過程。此外，為這些框圖實(shí)現(xiàn)配置設(shè)備的特點(diǎn)（ SRAM 的 FPGA）也進(jìn)行了描述。作為一個(gè)面向應(yīng)用的系統(tǒng)，根據(jù)不同的應(yīng)用，這些模塊的大部分必須是可伸縮的（增加或減少輸入 /輸出引腳的數(shù)量）。 中原工學(xué)院信息商務(wù)學(xué)院外文翻譯 3 虛擬儀器的核心是軟件，它主要由硬件驅(qū)動(dòng)程序、系統(tǒng)操作平臺(tái)、應(yīng)用編程軟件等組成，可完成所有的測(cè)試要求。因此，我們建議的重點(diǎn)是由通用硬件更換可重構(gòu)數(shù)據(jù)采集系統(tǒng)來加強(qiáng)虛擬儀器，通過這種方式，一些數(shù)據(jù)的處理過程可以通過減少計(jì)算機(jī)上硬件數(shù)據(jù)流和上升的最大采樣率來實(shí)現(xiàn)。個(gè)人電腦在許多科技領(lǐng)域的廣泛應(yīng)用使其為測(cè)量?jī)x器的執(zhí)行搭建 了一個(gè)理想的硬件和軟件平臺(tái)，通過增加一個(gè)簡(jiǎn)單的數(shù)據(jù)采集系統(tǒng)，個(gè)人計(jì)算機(jī)可以仿真任何儀器。用戶通過應(yīng)用程序?qū)⒁话愕耐ㄓ糜?jì)算機(jī)與功能化模塊硬件結(jié)合起來 ,通過友好的界面來操作計(jì)算機(jī) ,就像在操作自己定義，自己設(shè)計(jì)的單個(gè)儀器 ,可完成對(duì)被測(cè)量的采集，分析，判斷，控制，顯示，數(shù)據(jù)存儲(chǔ)等。 畢業(yè)論文（設(shè)計(jì)） 外文翻譯 題 目 ： 基于虛擬儀器的可重構(gòu)邏輯 系部名稱： 專業(yè)班級(jí)： 學(xué)生姓名： 學(xué) 號(hào)： 指導(dǎo)教師： 教師職稱 ： 2020 年 3 月 22 日 中原工學(xué)院信息商務(wù)學(xué)院外文翻譯 1 一、漢語翻譯 基于虛擬儀器的可重構(gòu)邏輯 摘要：從使用一個(gè)一般組合的通用計(jì)算機(jī)數(shù)據(jù)采集系統(tǒng)得出結(jié)果的虛擬儀器是為了仿真一個(gè)傳統(tǒng)的測(cè)量?jī)x 器。 虛擬儀器較傳統(tǒng)儀器的優(yōu)點(diǎn) (1)融合計(jì)算機(jī)強(qiáng)大的硬件資源 ,突破了傳統(tǒng)儀器在數(shù)據(jù)處理，顯示，存儲(chǔ)等方面的限制，大大增強(qiáng)了傳統(tǒng)儀器的功能。因?yàn)樗鼈儧]有獨(dú)自占有和訪問硬件和軟件資源，所以以這種方式產(chǎn)生的儀器被稱為虛擬儀器。 基于可重構(gòu)邏輯的虛擬儀器好處如下： 該儀器的帶寬可以提高，為在硬件上實(shí)現(xiàn)關(guān)鍵算法提供更多的時(shí)間。目前開發(fā)環(huán)境主要有兩類： (1)文本語言；(2)圖形語言。例如，采集存儲(chǔ)器的內(nèi)存容量要根據(jù)儀器的要求來設(shè)定。 輸入 /輸出模塊 輸入 /輸出模塊符合與現(xiàn)實(shí)世界的接口，輸入 /輸出模塊可重構(gòu)設(shè)備必須是雙向的，并且具有三態(tài)功能和更快捕獲 率的內(nèi)部寄存器。因此，這些存儲(chǔ)設(shè)備實(shí)現(xiàn)的功能，與擁有不同時(shí)鐘頻率推 /彈出操作雙端口 FIFO 類似。 計(jì)算機(jī)接口 對(duì)于可重構(gòu)的互連數(shù)據(jù)采集卡與計(jì)算機(jī)，有兩種不同的情況，一種是使用一個(gè)直接的擴(kuò)展 /本地總線連接，而另一種是使用串行 /并行通信接口。一方面電子技術(shù)及市場(chǎng)的發(fā)展從客觀上要求測(cè)試儀器向自動(dòng)化及柔性化的方向發(fā)展，另一方面，電子技術(shù)及市場(chǎng)的發(fā)展也給虛擬儀器的產(chǎn)生提供了可能。 3. 圖形化虛擬儀器開發(fā)平臺(tái) — LABVIEW 簡(jiǎn)介及其優(yōu)勢(shì) LABVIEW 是 Laboratory Virtual Instrument Engineering Workbench (實(shí)驗(yàn)室虛擬儀器集成開發(fā)環(huán)境 )的簡(jiǎn)稱，是由美國(guó)國(guó)家儀器公司 (National instruments, IN)創(chuàng)立的一個(gè)功能強(qiáng)大而又靈活的儀器和分析應(yīng)用開發(fā)工具。 囊括了 DAQ, GPIB, PXI, VXI, RS232/485 在內(nèi)的各種儀器通信總線 中原工學(xué)院信息商務(wù)學(xué)院外文翻譯 7 標(biāo)準(zhǔn)的所有功能函數(shù)，使得不懂總線標(biāo)準(zhǔn)的開發(fā)者也能夠驅(qū)動(dòng)不同總線標(biāo)準(zhǔn)接口設(shè)備與儀器。開放式數(shù)據(jù) 采集標(biāo)準(zhǔn)將使虛擬儀器走上標(biāo)準(zhǔn)化、通用化、系列化和模塊化的道路。在生產(chǎn)實(shí)踐和科技領(lǐng)域中有著廣泛的應(yīng)用。 . The virtual instrument is a kind of Computer equipment system which based on the general purpose puter as the core hardware platform, defined by the user with a virtual front panel, the test function is performed by a puter testing software. The core idea is to use a powerful puter resources that would otherwise require hardware to software of the technology in order to minimize system cost, enhance system functionality and flexibility. The virtual instrument represents the fundamental changes from traditional hardwarebased test system to Softwarecentric test system. The emergence of virtual instrument is a revolution in the history of instruments, it represents the latest development direction and trend of instrument, produced an immeasurable influence on the development of science and technology and industrial production progress. Virtual instrument have many advantages, such as high performance, scalability, strong, development time is short and seamless integration. graphical virtual instrument development platformLABVIEW introduction and its 中原工學(xué)院信息商務(wù)學(xué)院外文翻譯 15 advantages LABVIEW is short for Laboratory Virtual Instrument Engineering Workbench, it is a powerful and flexible instrumentation and analysis of application development tool created by National Instruments (National instruments, IN) 。Play peripherals). Different instruments can shar