功能安全在工業(yè)過程安全儀表中的研究應(yīng)用.pdf

1、杭州電子科技大學(xué)碩士學(xué)位論文功能安全在工業(yè)過程安全儀表中的研究應(yīng)用姓名：楊海兵申請學(xué)位級別：碩士專業(yè)：電路與系統(tǒng)指導(dǎo)教師：王健201201杭州I電子科技人學(xué)碩十學(xué)位論文AbstractNowadays，withthefastdevelopmentofindustryincludingpetroleum，chemical，metallurgyandrail_transport。ithasbecomeaseriousmissionto’av

2、oidthehazardoussituationsoffire，explosiontoxicgasleaksandrailtrafficaccidentsInforeigncountries，especiallythedevelopedindustrialcountries，they’haxemoreandmorestrongdemands‘onthefunctionalsafetyassessmentsThustherearemore

3、andmoreproductsneedtOgettheSILcertificationandtherangeofproductsisgraduallybeingexpandedHoweverwearestillonthestartingstageofthestudyonfunctiona1safetyandtheoverallleveliSfarbehindtheabroadOnth毫basisofIEC61508andlEC61511

4、，thispaperpresentstheapplicationand：researchohfunctionalsafetyofsafetyinstrumentandthemainstudiesarcasfclllows：First，itelaboratestheimportantinfluenceoffunctionalsafetyonsafetyinstrumentandthecurrentdevelopingsituationof

5、functionalsafetyfromfouraspects，includingdomesticandinternationalstandards，theoreticalresearch，evaluationandassessmentandproductdevelopmentOnthisbasis，thecontentsOfthisstudyarelistedinthispaperinordertomakethemetbodsandp

6、urposeofthis；researchclearlySecond，thepaperdiscussestheindustrialprocesssafetyinstrumentindetailfromthefacts’of‘physi6aq’struCtUre，basicfeatures，applications；redundancyarchitectureand‘etcSOastohaveadeepunderstandingonthe

7、safetyinstrumentThird，tt：ispaperintroducesfourfaultanalysismethods，includingFMEDA、FT觚ETAandRBD，summarizestheirmerits，demeritsandapplicationsituation：ItanalyzesonsinglefaultandcommoncausefaultandtheirprotectiondesignAccor

8、dingtothesystemfaults，ithasacompleteanalysisonthediagnostictechnologydiagnosticpoint，diagnosticquantification，diagnostictestingInaddition，itconnectsthcfaultdiagnosticahdsafetyintegrityfromarchitectureconstraintandanalyze

9、showtotransferfaultdiagnosisintosafetyfailurefractioninordertodeterminesafetyintegritylevelwhichcanmeetsthesystemfromstructuralconstraintsFourth，thispaperexplainssystemsafetyintegritytherelationshiphetweenriskreductionan

10、dsafetyintegritylevelItproposesthemeasuresteducerandomhardwarefailure，atthemeantime，itanalyzestheinfluencesofsubsystemonthesafetyintegrityfromhardwarearchitectureconstraintandpointsouttheimprovingprincipleaccordingtothed

11、efectsofmultichannelsystemanalyzingmethodsinthestandardinthepartofsoftware，thispapermainlystudiesOilsoftwaredevelopmentmodeandsoftwarelifecycleItalsoexplainshowtoapplytherecommendedtechnologiesandmeasuresinthestandardtog