基于USB和FPGA技術的激光打標控制卡的研究與開發(fā).pdf

1、華中師范大學碩士學位論文基于USB和FPGA技術的激光打標控制卡的研究與開發(fā)姓名：熊麗萍申請學位級別：碩士專業(yè)：物理電子學指導教師：張國平20090501AbstractLasermarkingisakindoftechniqueofmakingpermanentmarkonthesurfaceofobjectsbyusinglaserbeamwithhighdensityLaserMarkinghasachievedanincreas

2、inglywideapplicationsforitsadvantagesincludinghighspeed，highqualitygoodstabilityandSOonTraditionallasermarkingsystemsaregenerallybasedonISAbusorPCIbus，andthemotioncontrolcardhastobepluggedintothePCIslotinsidethecomputera

3、lsoitdoesnotsupporthot—swappableAlloftheseaffectesthestabilityofthecontrolcard；Anotherlasermarkingcontrollerbasedonthesinglechipcontrollerislowcostandcanrunsteadilybutthelimitedstorageandthelowrunningspeedrestrictitsappl

4、icationMotioncontrolcardisthekernelpartofalasermarkingsystemInthispaperwedesignanewtypeofopticalscanninglasermarkingcontrolcardbasedonUSBbusandusingFPGAasitsmaincontrolunitItUSeStheUSBbus’Sadvantagessuchashigh—speed，stab

5、le，easeofuseandFPGNsrichresources，strongabilityofprocessing，easyexpansion，etcWiththeinformationprocessingabilitiesofPCandthecontrolabilitiesofmotioncontrolcard，themotioncontrolcardhastheFeaturesofpowerfulinformationproce

6、ssingabilitygoodopennessandEasytouseAtfirst，weintroducetheprincipleoflasermarking，thedevelopmentactualitiesoflasermarkingtechnologyandtheconstitutionoflasermarkingsystemThentheUSBtechnologyisintroducedbrieflyandthehardwa

7、recircuitdesignofmotioncontrolcardisdiscussedindetail，includingUSBinterface，F(xiàn)PGAcontrolunit，D／Amodule，memories，I／0interface，andSoonThenext，thesoftwaredesignofUSBfirmwareandFPGAfunctionmodulesaredesignedindetail，including

8、USBcommunication，D／Awritecontrol，SRAMW瓜contr01FinallyThroughthedebuggingandmeasurement，thedesignedcardimplementsthefunctionssuchasUSBcommunications，thetwo—channelanalogoutput，SRAMreadandwritedataanddigitalinput／outputKey