基于USB接口的數(shù)據(jù)采集器設(shè)計(jì)

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摘要 隨著信息技術(shù)與電子技術(shù)的快速發(fā)展，數(shù)據(jù)采集技術(shù)廣泛應(yīng)用于科學(xué)研究領(lǐng)域和許多生產(chǎn)場(chǎng)合。傳統(tǒng)的通信方式由于傳輸速度慢、抗干擾能力弱、安裝麻煩等原因嚴(yán)重阻礙了數(shù)據(jù)采集設(shè)備的發(fā)展，新一代通用串行總線(Universal Serial Bus，簡(jiǎn)稱USB)具有傳輸線少、速度快、支持熱插拔以及易于擴(kuò)展等優(yōu)點(diǎn)，很好的解決了以上問題，因此串行總線技術(shù)在計(jì)算機(jī)系統(tǒng)及通信設(shè)備中迅速得到了廣泛的應(yīng)用。
本文依照課題要求，對(duì)數(shù)據(jù)采集系統(tǒng)的軟件實(shí)現(xiàn)進(jìn)行了研究。首先闡述了數(shù)據(jù)采集技術(shù)和USB技術(shù)的特點(diǎn)，以及設(shè)計(jì)思路，研究目的。其次重點(diǎn)討論了USB的特性，總線結(jié)構(gòu)和通信協(xié)議。然后介紹了硬件部分采用的芯片UA301數(shù)據(jù)采集卡，同時(shí)對(duì)該芯片的功能特點(diǎn)，技術(shù)指標(biāo)，連接驅(qū)動(dòng)，編程函數(shù)進(jìn)行了說明。最后介紹了利用Microsoft Visual C++軟件設(shè)計(jì)數(shù)據(jù)采集系統(tǒng)的過程，包括系統(tǒng)界面設(shè)計(jì)，功能實(shí)現(xiàn)，成果展示等。
本采集系統(tǒng)用戶軟件能完成要求的數(shù)據(jù)采集功能，可實(shí)現(xiàn)單通道或三通道采樣，界面美觀大方，操作簡(jiǎn)單方便。
關(guān)鍵詞：數(shù)據(jù)采集 通用串行總線（USB） UA301 Microsoft Visual C++

Application Design of the Data Acquisition System Based on USB 
Abstract With the development of information technology and electronic technology, data acquisition technology is widely used in the fields of scientific research and industrial production. The traditional communication mode has seriously hindered the development of the data acquisition equipment because the transmission speed is slow, weak anti-interference ability, trouble installation. A new generation of universal serial bus has the advantages of fewer transmission lines, speed, supporting hot plug and easy to expand ect. Solves this problems well. Therefore the serial bus technology in the computer system and the communications equipment has been widely used.
In this paper, in accordance with the requirements of the subject, research on software of the data acquisition system. Firstly explains the characteristic of data acquisition technology, the USB technology, and the design idea, the purpose of the study. Then it discusses the characteristics of USB, bus structure and communication protocol. And then introduces the hardware using data acquisition card UA301. At the same time it introduces the functions and characteristics, technical indicators, connected to the drive, the programming function. Finally, introduced the process of using Microsoft Visual C++ software design of data acquisition system, including the system interface design, function realization, exhibition etc.
The system user software can complete the data acquisition function, can realize single channel or three channel sampling beautiful interface, easy operation.
Key words Data acquisition System Universal Serial Bus UA301 Microsoft Visual C++

目 錄
第1章 緒論 1
1.1 數(shù)據(jù)采集技術(shù) 1
1.2 USB概述 1
1.3 數(shù)據(jù)采集技術(shù)的分類及本課題采用方案 2
1.4 論文研究?jī)?nèi)容和目的 3
第2章 USB原理技術(shù)概述 4
2.1 USB簡(jiǎn)介及特性 4
2.2 USB的總線結(jié)構(gòu) 4
2.3 USB的通信協(xié)議 6
2.3.1 信息包 6
2.3.2 事物 8
2.3.3 數(shù)據(jù)傳輸 8
第3章 UA301型A/D采集器 10
3.1 概述 10
3.1.1 主要功能及特點(diǎn) 10
3.1.2 技術(shù)指標(biāo) 11
3.2 A/D數(shù)據(jù)采集卡硬件連接及其驅(qū)動(dòng) 11
3.3 UA301編程函數(shù)簡(jiǎn)介 12
第4章 UA301數(shù)據(jù)采集系統(tǒng)軟件設(shè)計(jì) 13
4.1 軟件選擇 13
4.2 系統(tǒng)功能設(shè)計(jì) 13
4.3 設(shè)計(jì)概要說明 13
4.4 設(shè)計(jì)結(jié)果展示 15
4.5 系統(tǒng)界面設(shè)計(jì)詳細(xì)介紹 17
4.5.1 主對(duì)話框的設(shè)計(jì) 17
4.5.2 啟動(dòng)對(duì)話框設(shè)計(jì) 19
4.5.3 參數(shù)設(shè)置對(duì)話框設(shè)計(jì) 20
4.5.4 周期設(shè)置對(duì)話框設(shè)計(jì) 22
4.6 系統(tǒng)功能介紹 23
4.6.1 動(dòng)態(tài)鏈接庫的調(diào)用 23
4.6.2 函數(shù)的初始化 24
4.6.3 對(duì)話框的調(diào)用與顯示 25
4.6.4 全局變量的設(shè)置 25
4.6.5 定時(shí)器和計(jì)時(shí)器的設(shè)置 25
4.7 主要按鈕功能 26
4.7.1 停止采樣按鈕 26
4.7.2 刷新按鈕 26
4.7.3 幫助按鈕 27
4.7.4 保存按鈕 27
4.8 采集圖形顯示 29
第5章 結(jié)論 30
致謝 31
參考文獻(xiàn) 32