全自動顯微鏡光度計數(shù)據(jù)采集和控制系統(tǒng)研制

全文35頁 約10000字 論述翔實

摘 要
本設(shè)計圍繞全自動顯微鏡光度計產(chǎn)品的升級換代，對HY-4型全自動顯微鏡光度計的數(shù)據(jù)采集和控制系統(tǒng)進行了改造。為全自動顯微鏡光度計提供了新的數(shù)據(jù)采集及控制系統(tǒng)及可供調(diào)用的底層軟件。整個過程分為數(shù)據(jù)采集卡的選擇、控制系統(tǒng)的研制和模擬輸出自動調(diào)零與數(shù)據(jù)采集及控制系統(tǒng)底層軟件的開發(fā)三大部分。
數(shù)據(jù)采集卡的選擇是將原自研的數(shù)據(jù)采集卡，根據(jù)全自動顯微鏡光度計對數(shù)據(jù)采集、自動調(diào)零、程控增益和16路數(shù)字量輸出的需要，進行相關(guān)資料調(diào)研，最終采用了瑞博華公司的PCI總線接口的AD7200H數(shù)據(jù)采集卡。該采集卡A/D采集精度更高、速度更快，帶有D/A輸出，具有程控增益和16路I/O輸出口。
步進電機控制系統(tǒng)的研制，省去了原自研的步進電機控制板，改為通過數(shù)據(jù)采集卡上的16路數(shù)字量輸出口，每四路控制一個步進電機的方案。經(jīng)過設(shè)計的驅(qū)動電路分別對4個步進電機進行控制。為此又研制了與采集卡數(shù)字量輸出口配套的步進電機功率放大驅(qū)動器。
底層軟件開發(fā)主要是把原DOS下運行的底層軟件改編成用VB編寫的與新硬件相匹配的能夠在Windows下運行的軟件。在本設(shè)計中只對數(shù)據(jù)采集、步進電機控制和模擬輸入自動調(diào)零模塊等程序分別進行編寫。

關(guān)鍵詞：數(shù)據(jù)采集；步進電機驅(qū)動器 ；編程

Abstract

The main aim of this design is to update and improve the properties of the automatic microscope-photometric by changing the date acquisition system(DAQ) and controlled system of the automatic microscope-photometric of HY4 type. The whole project is made up of three parts including choosing DAQ device and driving stepper motor and zeroing output Analog .
The part of choosing DAQ is processed according to the requires of the automatic microscope-photometric. The requires include DAQ, Auto-zero, Program-control increase and 16 way of digital I/O. After investigating , AD7200H made by RuiBoHua company is accepted .
The order of develop of the controlled system of stepper motor is to substitute self-made control unit and use controlled stepper motor passed by 16 way of digital I/O .This update makes the device of driving stepper motor control one stepper motor by 4 way .So power-magnified device is needed to develop .
The aim of the exploiting of software is to change original software run in the DOS into the software run in the Windows. The new software is edited by Visual Basic language.

Keywords: DAQ; The Devices of driving stepper motor; Programme

目 錄

1設(shè)計目的……………………………………………………………………(1)
2 硬件設(shè)計方案、理論、內(nèi)容………………………………………………(3)
2.1數(shù)據(jù)采集卡………………………………………………………………(3)
2.1.1方案選擇…………………………………………………………(3)
2.1.2方案比較…………………………………………………………(4)
2.1.3采用方案…………………………………………………………(5)
2.2步進電機驅(qū)動器…………………………………………………………(6)
2.2.1步進電機驅(qū)動器的原理和方案………………………………………(6)
2.2.2器件選擇……………………………………………………………(7)
2.2.3制作步進電機驅(qū)動器電路板………………………………………(12)
3軟件編程…………………………………………………………………(16)
3.1 A/D采集模塊…………………………………………………………(16)
3.1.1 采集卡A/D采集編程原理……………………………………(16)
3.1.2 A/D采集模塊程序流程圖……………………………………(18)
3.2步進電機控制模塊……………………………………………………(18)
3.2.1步進電機控制原理……………………………………………(18)
3.2.2開關(guān)量輸出編程原理…………………………………………(19)
3.2.3步進電機控制模塊程序流程圖………………………………(21)
3.3模擬輸入通道自動調(diào)零模塊………………………………………(21)
3.3.1自動調(diào)零原理…………………………………………………(21)
3.3.2讀取A/D結(jié)果和控制D/A輸出編程原理……………………(21)
3.4程序界面圖…………………………………………………………(22)
3.5程序源代碼…………………………………………………………(22)
4調(diào)試………………………………………………………………………(30)
4.1 AD采集模塊調(diào)試……………………………………………………(30)
4.2 步進電機控制模塊調(diào)試……………………………………………(30)
4.2.1硬件檢查………………………………………………………(30)
4.2.2軟件測試………………………………………………………(30)
結(jié)語…………………………………………………………………………(31)
致 謝………………………………………………………………………(31)
參考文獻……………………………………………………………………(32)

部分參考文獻

[6] 李蘭友 萬振凱 丁剛.微機原理與接口技術(shù).北京：清華大學(xué)出版社，2005.2
[7] 周明德 蔣本珊.微機原理與接口技術(shù).北京：人民郵電出版社，2002.4
[8] 童永承.電路•模擬•A/D轉(zhuǎn)換及D/A轉(zhuǎn)換.北京：科學(xué)出版社，2002.1
[9] 閻石.數(shù)字電子技術(shù)基礎(chǔ)（第四版）.北京：高等教育出版社，2004.4