安全系统的设计步骤new

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1、ReducingStepstoAchieveSafetyCertificationWP-01174-1.0WhitePaperThiswhitepaperdescribesthesuccessfulstepsinachievingcertificationforanFPGAimplementationofanapplicationcertifiedforfunctionalsafety.Safetyisacriticalsystemrequirementindevelopingmachinerythatmustcomplywithworldwideestablishedstandar

2、dssuchastheIEC61508basicfunctionalsafetystandard.Altera’spre-qualifiedFunctionalSafetyDataPackageshortensdevelopmentandcertificationtimeandreducescertificationrisksinsafety-criticalindustrialapplications.IntroductionManyapplicationdevelopershaveconcernsaboutincorporatingfunctionalsafety.Project

3、managersandmembersofthevalidationteamareconfrontedwithanewandunknownfieldofsafetycertification.Theconcernsaretypicallycausedbythefactthatacertifyingbody,externalauditor,getsinvolvedwiththeprojectteam.Authorityoverprocessandqualitynolongerliesonlywithinthecompany’sresponsibility;itissupervisedex

4、ternally.Safetyprojectsrequireanincreasedamountofprocessanddocumentation.Fortunately,notallprocessstepshavetobere-inventedorcreatedfromscratch.Byusingprequalifiedtoolsorapplyingpredefinedtechniquesandmeasures,itbecomesmucheasiertoachievesafetycertification.Documentationplaysanimportantrole,andi

5、nternationalstandardsrequireastricterleveloffollowingdefinedrulesinaproject.Therefore,ithelpstorelyonanalready-qualifiedsetofdocuments,processes,andmethods.Tosimplifyandspeedupthecertificationprocess,AlteraworkedwithTÜVRheinlandandobtainedqualificationforAltera®FPGAdevices,IP,theFPGAdesignflow,

6、anddevelopmenttools.ThisqualificationmeansthatAlteratools,methodologies,anddevicesaresufficientlyfreeofsystematicerrorsandcanbeusedinsafety-criticalapplications.HowtoStartThemainintentoffunctionalsafetyistopreventtheriskofinjuryordeathasaresultofrandom,systematic,orcommon-causefailuresinsafety-

7、relevantsystems.So-calledrandomfailuresarecausedbyamalfunctionofthesafetysystem’spartsorcomponentsincontrasttosystematicfailuresthatarearesultofawrongorinadequatespecificationofasafetyfunction.Acommoncausefailureisthesimultaneousm