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(硕士论文)基于USB接口的数据采集系统设计(3)

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USB接口

AbStract

Title:DATA

ACQUISITIONSYSTEM

BASEDONUSBINTERFACE

DESIGN

Major:Technology&Instrumentation

Name:Chao

ofTestingandMeasuring

Wu

SignatureSignature

Supervisor:Prof.ZonghaiGao

#

fieldsofmodem

industrialwithUSB

and

Abstract

With

theincreasing

demands

on

dataacquisitionin

the

productions

and

scientificresearches,thesuperiorityofdata

acquisitionplatforms

obviousinsome

(Universal

Serial

Bus)interface

hasbecomemoreandmore

hi曲speed

lli曲precision

measurementsystemssuchastransientsignaldetectingandimageprocessing

a

systems.TheusageofUSB—baseddataacquisitioncardhasalreadybecome

present.

Thisthesisaimstoconstruct

dataacquisitioncard

a

prevalenceat

dataacquisition

platformbasedonUSBinterface.Firstly,a

MAX1166and

the

user

based

is

Oll

USBinterfacechipPDIUSBD12,A/Dchip

layers

microcontroller

corresponding

89C52

developed.Secondly,three

ofprograms,namely

MCUprogram

forcard,PCbuttomdriversforUSBinterface,andPC

applicationprogram

underVC++developmentenvironment

arc

developed,whichWindows

realize

bidirectionalcommunicationfromlowlayer

MCU

on

toPCbaesdOil

XPoperating

system.Finally,adataacquisitionplatformbased

Themainpartsofthisthesis

USBinterfaceisbuiltsucessfully.

comprisetwoimportant

contents,namely

based

on

hardware

and

software

design.The

based

hardwaredesignintroducestheclockcircuit

on

89C52,power

supplycircuit,A/Dacquisitioncircuitbasedinterfacecircuit

on

MAXl

166,keystrokeresetcircuit,USB

PDIUSBD12andserial

circuit.

The

software

design

introducesfirmwareXP

program

013

design

based

on

KEILdevelopment

environment,WINDOWS

This

thesislays

a

WDM

driverbasedMICROSOFT

DDK

and

on

debugusingVC.

SOFTICEtoolforthedriver.Finally,userapplication

design

isintrducedbased

solidfoundationforthefuturestudyand

projects

on

dataacquisition

systembasedonUSBinterface,whichachievesthepurposeofsubjectresearch.

Key

Words:USB,DataAcquisition,SoftwareandHardwareDesign

2

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