基于并行打印接口數(shù)據(jù)采集和數(shù)據(jù)回寫系統(tǒng)研制.pdf

1、西南交通大學碩士學位論文基于并行打印接口數(shù)據(jù)采集和數(shù)據(jù)回寫系統(tǒng)研制姓名：李騏申請學位級別：碩士專業(yè)：測試計量技術(shù)及儀器指導教師：蘇燕辰20070401西南交通大學碩士研究生學位論文第1I頁ABSTRACTChinaisacountrywithavastterritoryagreatanaoutofpopulationandthedistributingofresonrceOUtofproportionIt’Simportanttothe

2、developmentofeconomictOdeveloptransportationForthevirtueofhighspeediness，greatcapacityenergysourcesaved，securityandliRlecontaminationthetransportationofrailwaywillplayamoreandmoreimportantroleinthefutureIt’Stheseedtimeof

3、theeconomicdevelopmentofChinathespeedandquantityoftransportationiSrequestedInthissituation，itiSrequiredthattherailwaynetworkhandlethearriving，shunting，departingjobsintegrativelyHoweverduetothefactthattheshuntingplanwimin

4、technicalstationsismadeupmanuallywhichisboundtObeinflueneedbytheprofessionallevelofthestaffthehardwareCanlaOtbefullyandefficiemlyusedToireprovethemarshallingefficiencywemustanalyzecurrenttrainlistandoptimizetheshuntingpl

5、anbycertainmethodActuallythismethodthemethod—basedsoftwarehasbeimplementedandtestedinGuiyangstationHoweverasitisdimculttOaccessdatabyaccessingdatabasetheinformationhastObeobtainedmanuallywhichwillinevitablyc部lsesomemista

6、keandthusbringabouthiddendangersandotherunforeseenproblemsSoitisurgentforUStOsolvetheproblemofreadingandwritingdatafromthedatabaseTllispaperproposesahardwaremethodtoaccessingthetrainlistdataandshuntingplandatabypassingth

7、edatabaseinterfaceThroughthoroughanalysisandfieldworkonfreightstationand，thefinalplanisdecidedwithoutinfluencingtheformerworkingprocedureFirstlythedataoftrainlistisobtainedfromtheparallelinteffaeeoftheprimerwithoutinterr

8、uptingtheprinter’sworkingThen，USinghcPS／2busprotocolofSingleChipMicyoco，the‘optimalshuntingplan”，whichincludetheEnglishletter，ChinesecharactersignandkeyboardcontrolcommandiSmadeupbysimulatingtheartificialkeyboardFinallyt

9、heaccessingofdatatOgetherwithcontrolcommandiscompletedthroughserialbusInthisprojectthekernelhardwareiSSST89E564whichhasserialinterfacebuiltin，externalinterruptionandregularinterruptionFurthermoretheapplicationofIAPtechno

10、logytremendouslyimprovethehardwaredevelopmentupdatingandmaintenane2Throughthestudyoftheprinterparallelinterface—baseddataaccessingandstoringsystem，myprogrammingabilityOilcomputerinterfacehasbeenimprovedalotBesides，Igotac