本文采用一種新型的通信標準USB，研制出一種基于USB 接口的實用型數(shù)據(jù)采集卡。
硬件是一外置式的密封設備，軟件具有很好的用戶圖形界面。整個系統(tǒng)功能齊全、操作簡單，采樣速度24MB/s 達到國內(nèi)先進水平。詳細論述了高速數(shù)據(jù)采集系統(tǒng)的硬件設計，并且對系統(tǒng)所使用的主要芯片和相關(guān)技術(shù)做了說明；本文還對USB 驅(qū)動程序、固件程序和應用層程序進行了開發(fā)。
關(guān)鍵字: 數(shù)據(jù)采集；USB；數(shù)模轉(zhuǎn)換；CPLD
Abstract: The paper adopts a new pattern communication criterion USB，and develops a
high-speed data acquisition card. The hardware result is an airtight device and the software plat as a friendly graphic user interface (GUI) which makes the system simple and powerful in
practical usage. The rate reaches 24Mb/s which reaches advanced level in home. This paper
discussed the hardware design of the data acquisition system and it describes the main chips and echnology used in the system. Otherwise, it developed the USB drive program, firmware program, nd application program.
Keywords: Data Acquisition Card; USB; A/D Conversion; CPLD