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1、摘要隨著信息領(lǐng)域各種技術(shù)的發(fā)展，在數(shù)據(jù)采集方面的技術(shù)也取得了長足的進(jìn)步，采集數(shù)據(jù)的信息化是目前社會的發(fā)展主流方向。各種領(lǐng)域都用到了數(shù)據(jù)采集，在石油勘探、地震數(shù)據(jù)采集領(lǐng)域已經(jīng)得到應(yīng)用。隨著測控技術(shù)的迅猛發(fā)展，以嵌入式計(jì)算機(jī)為核心的數(shù)據(jù)采集系統(tǒng)己經(jīng)在測控領(lǐng)域中占到了統(tǒng)治地位。數(shù)據(jù)采集系統(tǒng)是將現(xiàn)場采集到的數(shù)據(jù)進(jìn)行處理、傳輸、顯示、存儲等操作。數(shù)據(jù)采集系統(tǒng)的主要功能是把模擬信號變成數(shù)字信號，并進(jìn)行分析、處理、存儲和顯示。國內(nèi)大大小小很多公司多開發(fā)了數(shù)據(jù)采集器和卡之類的產(chǎn)品，這使信息的數(shù)字化提供了極大的方便。本次畢業(yè)設(shè)計(jì)課題，數(shù)據(jù)采集器制作，是利用ATMEL公司的89C51
2、單片機(jī)和AD0809芯片做一個采集模擬電壓信號，轉(zhuǎn)換為數(shù)字信號，再由單片機(jī)經(jīng)過串口發(fā)送給PC機(jī)處理，另外三個數(shù)碼管LED顯示采集的數(shù)字信息。關(guān)鍵字：單片機(jī)、數(shù)據(jù)采集、信號處理、AD0809芯片AbstractAlong?with?the?development?of?information?field?various?technologies,?the?technology?in?the?aspect?of?data?collection?has?also?gotten?rapid?advance,?gather?the?informative?process?o
3、f?data?is?now?society?develop?the?direction?of?main?stream.?Various?fields?have?used?data?collection,?in?petroleum?exploration?and?seismic?data?collection?field?have?gotten?application.?As?measuring?to?control?technical?swift?development,?with?embedded?computer?for?key?data?collection
4、?system?Jig?go?through?in?measure?to?control?field?in?have?taken?dominance?position.?Data?collection?system?is?to?carry?out?the?data?that?the?collection?on-the-spot?goes?to?to?handle,?transmits?and?shows,?stock?etc.?operation.?The?major?function?of?data?collection?system?is?simulated?
5、signal?become?digital?signal,?and?analyses?handling,?stock?and?show.?Domestic?size?many?companies?have?developed?data?collection?ware?and?the?product?that?blocks?and?so?on,?this?makes?the?digitization?of?information?have?offered?maximum?convenience.?This?graduated?design?program,?data
6、?collection?ware?produce?is?the?only?flat?machine?of?89?C51?that?uses?the?company?of?ATMEL?with?AD0809?chip?do?a?collection?simulated?voltage?signal,?conversion?number?word?signal?passes?string?mouth?again?by?only?flat?machine?to?dispatch?to?the?handling?of?personal?computer,?addition
7、ally,?3?number?pipe?LED’s?show?the?digital?information?of?collection.?Keyword:?Only?flat?machine、Data?is?gathered、Handle目錄摘要關(guān)鍵字前言1數(shù)據(jù)采集系統(tǒng)的基本介紹1.1數(shù)據(jù)采集系統(tǒng)的基本原理1.2數(shù)據(jù)采集系統(tǒng)的分類1.3數(shù)據(jù)采集系統(tǒng)的基本功能1.4數(shù)據(jù)采集系統(tǒng)的結(jié)構(gòu)形式1.5數(shù)據(jù)采集系統(tǒng)設(shè)計(jì)的原則1.6數(shù)據(jù)采集系統(tǒng)的發(fā)展趨勢2系統(tǒng)功能的介紹2.1方案的論證2.1．1模數(shù)轉(zhuǎn)換的選擇2．12.87C51的選擇2．1.3.顯示電路2．1.4.電壓/頻率
8、轉(zhuǎn)換器3數(shù)
