基于HART協(xié)議檢測儀表通信軟件的開發(fā).pdf

1、南京理工大學碩士學位論文基于HART協(xié)議檢測儀表通信軟件的開發(fā)姓名：李捷申請學位級別：碩士專業(yè)：計算機技術(shù)指導教師：符意德張學智20031101工程碩士論文基于HART協(xié)議檢測儀表通信軟件的開發(fā)AbstractTherapiddevelopmentofinformationtechnologycausesgreatchangeofsystemicstructureofautomation，whichgraduallyposeenterp

2、rise’sinformationsystembasedonautomationsystemofnetworkintegration，fieldbuswhichconformswiththistrendanddevelopsishottopicinatttomaticfieldnowadayswhichisallopening，digitalandmultidropcommunicationcontrolnetworkoflowlaye

3、rfieldbuswillbethetrendofdevelopmentHARTcommunicationprotocolintroducedinthepaperisrudimentoffieldbus，whichpermitstransferringdigitalsignalonanalogsignalcircuitandbelongtotransitionalprotocilduringtransffionfromanalogsys

4、temtodigitalsystemButinmycountryalotofanalogtransmitters，andmetersstillexist，andspeciallyinsmallandniddle—sizedenterprises，controlsystemsaremostlyanalogicsystemanduse4—20mAcurrentsignalsor15Vvoltagesignalstoimplementtran

5、smissionandcontrolofinformation；hencetransfonningtooveralldigitalcon仃olsystemisapparentlyunrealistic，productsthatuseHARTprotocolfurtherconformtothesituationandfactofmycountrythispaperfirstlyintroduceHARTprotocoldetalledl

6、yandthennumericalprocessingisrecommended，subsequently，ImakedetailedrecommendationaboutmeasuringmetercommunicationsoftwarebasedonHARTprotocol(itincludescommunicationmethodandmechanismadoptedinsoftware，operatingprocessandi