【正文】 遼寧科技大學(xué)畢業(yè)設(shè)計(jì)（論文） 第 I 頁 I 基于單片機(jī)和 USB 接口技術(shù)的高速數(shù)據(jù)采集系統(tǒng)的設(shè)計(jì) 摘要 數(shù)據(jù)采集系統(tǒng)是結(jié)合基于計(jì)算機(jī)的測量軟硬件產(chǎn)品實(shí)現(xiàn)靈活的、用戶自定義的測量系統(tǒng)。 數(shù)據(jù)采集包括從信號(hào)源采集信號(hào)，將其進(jìn)行數(shù)字化，存儲(chǔ)分析并傳遞到個(gè)人PC 上。 通用串行總線 (USB)作為一種新的微機(jī)總線接口規(guī)范．具有便捷、易擴(kuò)展、低成本、低干擾等特點(diǎn)，非常適合作為主機(jī)和外設(shè)之間的通信接口。 USB 為數(shù)據(jù)采集設(shè)備 /儀器與 PC 機(jī)之間的連接提供了一個(gè)費(fèi)用低廉且簡單易用的方案。 USB 通訊技術(shù)的出現(xiàn)，使高傳輸速度、強(qiáng)糾錯(cuò)能力、易擴(kuò)展性、方便的即插即用，有機(jī)的結(jié)合在一起。 USB 技術(shù)雖然出現(xiàn)的時(shí)間并不長，但是由于它的種種優(yōu)點(diǎn)，被越來越多的廠商和用戶所接受 .本次畢業(yè)設(shè)計(jì) (論文 )設(shè)計(jì)了一種基于單片機(jī)和 USB 的高速數(shù)據(jù)采集系統(tǒng)的硬件及固件 PDIUSBD12 程序設(shè)計(jì)方案。 關(guān)鍵詞 數(shù)據(jù)采集系統(tǒng) ； usb 接口； 單片機(jī) 遼寧科技大學(xué)畢業(yè)設(shè)計(jì)（論文） 第 II 頁 II Abstract Data acquisition uses a bination of PCbased measurement hardware and software to provide a flexible, userdefined measurement system. Data acquisition involves gathering signals from measurement sources and digitizing the signal for storage, analysis, and presentation on a personal puter (PC).As a new interface Specification． the Universal Serial Bus (USB) has the advantages of convenient、 expansibility、 low cost and anti—disturbance． So it is fit for the munication interface between the host and available peripherals USB delivers an inexpensive, easytouse connection between data acquisition devices/instruments and PCs. USB munication technology can enable highspeed, strong errorcorrecting capabilities, easy extensibility, plugandplay convenience, bined with anic. USB technology is not even in the face of a long time, but because of its many advantages, more and more accepted by manufacturers and users. This thesis introduce to the hardware and software design for the high speed data acquisition system based on Single chip micro puter and USB. Key words data acquisition； universal serial bus interface； Single chip micro puter 遼寧科技大學(xué)畢業(yè)設(shè)計(jì)（論文） 第 III 頁 III 目錄 摘要 ........................................................................................................................................ I Abstract.................................................................................................................................. II 第 1 章 緒論 ......................................................................................................................... 1 研究的背景及目的 .................................................................................................. 1 國內(nèi)外研究現(xiàn)狀及已有成果 .................................................................................. 1 課 題的研究方法和內(nèi)容 .......................................................................................... 2 第 2 章 總體方案設(shè)計(jì) ......................................................................................................... 3 芯片比較 .................................................................................................................. 3 單片機(jī)選型 ........................................................................................................ 3 USB 接口芯片的選擇 ........................................................................................ 3 系統(tǒng)的原理及其組成 .............................................................................................. 5 第 3 章 系統(tǒng)的程序設(shè)計(jì) ..................................................................................................... 7 系統(tǒng)的硬件設(shè)計(jì) ...................................................................................................... 7 PDIUSBD12 的性能特點(diǎn)和 內(nèi)部結(jié)構(gòu) ............................................................... 7 PDIUSBD12 的端點(diǎn)描述 ................................................................................... 9 PDIUSBD12 的指令集 ..................................................................................... 10 PDIUSBD12 的管腳配置 ................................................................................. 11 A/D 與單片機(jī)接口電路 .................................................................................... 13 PDIUSBD12 與單片機(jī)接口電路 ..................................................................... 14 系統(tǒng)的軟件設(shè)計(jì) .................................................................................................... 14 PDIUSBD12 的固件編程思想 ......................................................................... 14 PDIUSBD12 固 件編程的結(jié)構(gòu) ......................................................................... 15 PDIUSBD12 固件編程的實(shí)現(xiàn) ......................................................................... 17 端點(diǎn)處理程序 .................................................................................................. 18 主循環(huán) ..................................................................................... 21 驅(qū)動(dòng)程序開發(fā)工具的介紹 .............................................................................. 22 USB 設(shè)備驅(qū)動(dòng)程序設(shè)計(jì) .................................................................................. 23 USB 設(shè)備 驅(qū)動(dòng)程序的調(diào)用 .............................................................................. 24 第 4 章 方案設(shè)計(jì)的分析及本研究的創(chuàng)新策略 ............................................................... 26 方案的可行性、實(shí)驗(yàn)過程、數(shù)據(jù)的處理及分析 ................................................ 26 系統(tǒng)硬件設(shè)計(jì)分析 .......................................................................................... 26 系統(tǒng)軟件設(shè)計(jì)分析 .......................................................................................... 26 本次設(shè)計(jì)的創(chuàng)新與改進(jìn) ........................................................................................ 27 結(jié)論 ..................................................................................................................................... 29 致謝 ..................................................................................................................................... 30 參考文獻(xiàn) ............................................................................................................................. 31 附錄 A ........................................................