簡易數(shù)字存儲示波器

測控論文編號:CK138   論文字數(shù):15560,頁數(shù):38  附外文翻譯

目 錄
摘要…. . .….. Ⅱ
Abstract.. Ⅲ目錄.Ⅳ
1 引言……..1
 1.1 數(shù)字存儲示波器介紹………. …..1
1.2 研究內(nèi)容……3
2 簡易數(shù)字存儲示波器總體方案的設(shè)計與論證……... .4
3單元電路方案設(shè)計7
3.1 觸發(fā)電路……7
3.2 輸入電路……9
 3.2.1  電路要求……..9
 3.2.2 輸入電路方案設(shè)計與論證.9
 3.3  采樣與存儲控制電路的設(shè)計…..11
3.3.1 采樣模塊………11
3.3.2 存儲控制電路…12
3.4 輸出電路……16
3.5 顯示模塊……17
3.5.1 鋸齒波形成電路：………19
3.5.2 雙蹤示波電路…20
4 主要元器件介紹..22
4.1 AT89C52簡介22
4.2 TLC5510……..24
4.3 8255簡介…..25
5 結(jié)果測試分析……27
 5.1．測頻模塊…..27
 5.2字符顯示模塊.27
 5.3峰峰值測量功能……….28
 5.4 系統(tǒng)軟件……28
 5.5．系統(tǒng)測試…..29
    5.6．結(jié)果分析…..30
6  總結(jié). …..31
致謝………...32
主要參考文獻……...33

摘  要
 數(shù)字示波器自上個世紀七十年代誕生以來，其應用越來越廣泛，已成為測試工程師必備的工具之一。隨著近幾年來電子技術(shù)取得突破性的發(fā)展，全世界數(shù)字示波器市場進一步擴大。
 本文介紹了簡易數(shù)字存儲示波器設(shè)計的基本理論，討論了輸入輸出、控制模塊、人機界面接口以及顯示模塊的相關(guān)內(nèi)容。信號前向調(diào)整模塊采用高速低噪音模擬開關(guān)(MAX4545)和寬帶運算放大器(MAX817)構(gòu)成可編程運算放大器，對幅度不等的輸入信號分別進行不同等級的放大處理。數(shù)據(jù)采集模塊采用可編程器件(EPM7128SLC84-15)控制高速Ａ／Ｄ(TLC5510)對不同頻率的輸入信號分別以相應的采樣速度予以采樣，并將采樣數(shù)據(jù)存在雙口ＲＡＭ(IDT7132)中。數(shù)據(jù)輸出模塊采用另一片可編程器件(EPM7128SLC84-15)控制兩片Ｄ／Ａ(DAC0800)分別輸出采樣信號和鋸齒波,在示波器上以Ｘ－Ｙ的方式顯示波形。控制模塊以AT89C52單片機為控制核心，協(xié)調(diào)兩片可編程器件的工作，并完成其它的測量，計算及控制功能。

關(guān)鍵詞：數(shù)字示波器；人機界面接口；可編程控制器件；采樣量化

Abstract
Digital oscilloscope since the birth of the seventies last century, and their application is widespread and has become an essential tool for engineers to test one. With the electronic technology in recent years the development of a breakthrough, the world market is going to further expand the digital oscilloscope.
This paper introduces the design of simple digital storage oscilloscope's basic theory, discussed the input and output, control modules, human-machine interface, as well as the relevance of the content module. Signal adjustment module to the high-speed low-noise analog switch (MAX4545) and broadband operational amplifier (MAX817) constitutes a programmable operational amplifier, the amplitude of the input signal range were dealing with different levels of zoom. Data acquisition module using programmable devices (EPM7128SLC84-15) to control high-speed A / D (TLC5510) of different frequency to the input signal, respectively, corresponding to the sampling rate sampling, the sampling data and dual-port RAM (IDT7132) in. Data output module using another chip programmable devices (EPM7128SLC84-15) control the two D / A (DAC0800), respectively, and the sawtooth wave output signal sampling in the oscilloscope to the X-Y display waveforms. AT89C52 single-chip control module to control the core of the coordination of the two programmable devices and the completion of other measurement, calculation and control functions.
 
Keywords： Digital oscilloscope；Man-machine interface；Programmable control device；sampling and Quantitative