本科畢業(yè)論文（設(shè)計）論文題目：基于USB總線和89C51單片機的數(shù)據(jù)采集系統(tǒng)設(shè)計學(xué)生姓名：所在院系：機電學(xué)院所學(xué)專業(yè)：應(yīng)用電子技術(shù)教育導(dǎo)師姓名：完成時間：摘要本文介紹了基于USB總線的數(shù)據(jù)采集設(shè)備的開發(fā)法，包括數(shù)據(jù)采集硬件設(shè)計、USB總線的硬件設(shè)計，同時也簡單的介紹了設(shè)備固件設(shè)計、基于USB的遠(yuǎn)程數(shù)據(jù)采集。89C51通過對多路采集模塊進行控制,選出一路通道的數(shù)據(jù)寄存在單片機，再通過USB芯片將89C51采集到的數(shù)據(jù)上傳給上位機。關(guān)鍵詞：數(shù)據(jù)采集，89C51，通用串行總線BasedontheUSBbusand89C51single-chipdataacquisitionsystemdesignAbstractThispaperintroducestheacquisitionbasedonUSBbus-baseddataacquisition,includingthedataacquisitionhardwaredesignandUSBbusofthehardwaredesign.AlsointroducesUSB-basedremotedataacquisitionsystemandfirmwaredesign.89C51selectsthewaydatastoragechannelinthesingle-chipbycontrollingmulti-channelmodule,andthenthedatacollectedby89C51uploadtothehostcomputer.throughtheUSBchipsKeyword:DataAcquisition,89C51Single-chip,UniversalSerialBus目錄1引言.12總體方案設(shè)計.12.1設(shè)計思路.12.2設(shè)計方框圖.13數(shù)據(jù)采集設(shè)計.23.1模擬信號的多路選擇.23.2多路開關(guān)原理.23.3A/D轉(zhuǎn)換介紹.33.3.1分辨率.33.3.2誤差和精度.43.3.3轉(zhuǎn)換速率.43.3.4A/D轉(zhuǎn)換的方法.43.4數(shù)據(jù)采樣電路.44單片機介紹.64.1單片機的基本組成.64.2單片機引腳及功能.65USB接口電路設(shè)計.75.1USB芯片內(nèi)部結(jié)構(gòu).85.1.1端點0.85.1.2端點1.95.1.3端點2.95.1.4外部固件參考流程.95.2USB芯片與單片機的接口電路.105.3USB設(shè)備驅(qū)動程序設(shè)計.116應(yīng)用程序設(shè)計.127設(shè)備固件設(shè)計.138遠(yuǎn)程數(shù)據(jù)采集系統(tǒng)設(shè)計.14