嵌入式的USB數(shù)據(jù)采集系統(tǒng)

數(shù)據(jù)采集/波形發(fā)生系統(tǒng)是信息獲取和傳遞的重要手段，是電子測控技術(shù)中至關(guān)重要
的環(huán)節(jié)。本系統(tǒng)采用虛擬儀器設(shè)計(jì)思想和USB2.0 總線通信技術(shù)，設(shè)計(jì)并完成了四通道高速數(shù)據(jù)采集器和兩通道高精度波形發(fā)生器。本文主要從硬件和軟件設(shè)計(jì)兩個方而論述了數(shù)據(jù)采集/波形發(fā)生器的開發(fā)過程，重點(diǎn)闡述了硬件設(shè)計(jì)的原理、固件程序的設(shè)計(jì)思想、動態(tài)庫的設(shè)計(jì)、應(yīng)用程序的設(shè)計(jì)、固件下載驅(qū)動程序的開發(fā)以及inf 文件編寫。
關(guān)鍵字：USB2.0,數(shù)據(jù)采集，固件，動態(tài)庫
Abstract: The system of data acquisition and wave generator is an important method to acquire and transmit the information and a necessary part in measure-control technology. This thesis, adopting the idea of VI based on USB2.0, designed and realized a high speed acquirer with four channels and high precision wave generator with two channels. This paper discuss the process of designing and realizing data acquisition and wave generator primarily in the aspect of hardware and software, and the software includes the design of firmware program, Dynamic Link Library (DLL),application program, firmware-download driver development and encode of the inf file.
Key word: USB2.0, data acquisition，firmware，Dynamic Link Library