天然氣計(jì)量管理與遠(yuǎn)程監(jiān)測系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)

1、西南交通大學(xué)碩士學(xué)位論文天然氣計(jì)量管理與遠(yuǎn)程監(jiān)測系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)姓名：張慶榮申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：余立建2002.5.1AbstractTMsmasterthesisaimsatdevelopinganaturalgasmeteragemanagementandremotemonitoringsystemwithdistributedhierarchywhichisbasedontheRS485busandth

2、eMo曲USPlUSnetworkinPCinthefieldThesystemwhichiSorientedtotheapplicationtothestationsofnaturalgas，isdesignedtomeetdataacquisitionmeterage，managementandremotemonitoringinthesupervisingCenterThesystemhasthefollowingremarkab

3、lefeatures：realtimerospoUSe，hi曲compatibilityhighexpandabilitystrongantiinterference，highprecision，highreliabilityandfriendlymanmachineinterfaceetcBasedontherequirementanalysis，theoveralldesignandthephysicalstructureofthe

4、subsysteminthefieldarecardedoutfirstlyandthedesignrequirementofthesoRwaresystemisgivenThepaperanalysesthenetworkforminthefield，andthedesignandimplementationofthesoftwareForsoftwaredesignthecommunicationmodulefluxmeasurin

5、gmodule。anddatabasemodulearepre∞ntedandsomecommunicati∞interfacesuchasRS232，ItS485，ModbUSiSconsideredinthephysicalstructuredesignTheemphasisisplacedonthecommunicationprotocolsofthesubsysteminthefieldSecondlythethesisdeal

6、swiththeinterferenceproblemandtheantiinterferencetechniquesinthefieldsubsystemAtthesametime，theremotecommunicationformsandimplementationarepresentedbetweenthesubsystemandthesupervisingcenterThirdly，thedetaileddesignandim

7、plementationofthesysteminthefieldinthevisualbasicintegrateddevelopmentenvironmentarcintroducedHere，attentionisespeciallypaidtothecommunicationdesign，thecommunicationdesignandimplementationbasedontheRS485bUSandtheModbusco

8、mmunicationprotoc01FinallyaconclusioniSdrawnfromthePaperandthetechniqueofvirtualinstrument，thefronttechniqueinthefieldofindustrialcontrol。iSmentionedKEYWords：NaturalGas：Meterage：Management：RemoteSupervising：Communication