智能型落锤式弯沉仪系统控制器的产品研制

南京航空航天大学硕士学位论文智能型落锤式弯沉仪系统控制器的产品研制姓名：张戎申请学位级别：硕士专业：通信与信息系统指导教师：叶明20080101i——ARMPCBARMµC/OS-IIiiABSTRACTWiththefastdevelopmentoftheTransportationIndustry,itbecomesanimportantissuethatHowtoexamineandmaintainroadsscientificly.TheIntelligentFalling-WeightDeflectometerisanadvanceddeflectortestinstrument.ThispaperdevelopsthecontrolsystemoftheFalling-WeightDeflectometer,whichdirectsthedeflectometertoexcuteaseriesofmechanicalmotionsandtocollectvariousnecessarydataintime.Thispapertakessyntheticalstudyandanalysisontheprincipiumandfunctionofthedeflectometer.Accordingtotheprincipleofpracticability,reliabilityandextensibility,thepaperbringsforwardasystemsolutionbasedontheARMprocessorandembeddedreal-timeoperatingsystem.Firstofall,wediscussthesystemhardwaredesign,includingtheschematiccircuitdesignanddebuggingtechniqueonpowersupplyunit,processorunit,datacollectingunit,memoryunit,controllingunit,andcommunicationunit,someessentialpointsinPCBdesignarealsodiscussed.Secondly,weintroducedthefirmwaredesign,includingtwodifferentways:oneisbasedonforeground/backgroundsystem,theotherisbasedonembeddedsystem.Then,weanalyzethesoftwarestructureoftheuppercomputer,andtakeexamplestodescribethefunctionsofthesoftware.Aftertotaldesigncompleted,thepapertakessomeperformancetestonthecontrollingsystemaswellasdoingsomeresearchonthecalibrationofdeflectometer.Finally,wesummarizetheproblemsweencounteredintheprogressofproductdevelopment,andputforwardseveralimprovementplans.OurIntelligentFalling-WeightDeflectometerhaspassedthedomesticexperts'appraisal,hasobtainedtheutilitymodelpatent,andhasbeguntheproductionandthesale.Aftertheunceasingimprovement,thedeflectiometercontrollingsystemhasachievedthedesigngoalbothintheperformanceandthefunction,andshowedhighstabilityandreliabilityinthelong-termworkingprocess.KeyWords:falling-weightdeflectometer,dataacquisition,controlsystem,foreground/backgroundsystem,embeddedsystem,ARM,µC/OS-IIvi1.1FWD-2000..................................................................21.2....................................................................................22.1....................................................................................62.2........................................................................................72.3........................................................................................72.43.3V2.5V................................................................82.5S3C44B0X......................................................................92.6S3C44B0X......................................................................92.7..............................................................................................102.8.....................................................................................................112.9JTAG............................................................................................112.10............................................................................................122.11SST39VF1601............................................................................132.12HY57V641620...........................................................................142.13FM18L08....................................................................................152.14........................................................................162.15....................................................................................162.16MAX291.........................................................................172.17CBB..........................................................182.18............................................................................................182.19....................................................................................192.20MAX291+RC(FC=1KHZ)....................................................202.21....................................................................................212.22....................................................................................212.23AD7663.......................................................................222.24AD7663..................................................................................232.25AD44B0......................................................................................242.26CPLD..................................................................................252.27................................................................................26vii2.28................................................................................272.29................................................................................272.30................................................................................................282.31PDIUSBD12...............................................................................292.32RS232.........................................................................................312.33...................................