improved engineering diagnoscs for space exploraon · • sofware introduces marker 102 before and...
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Raw
CPS
2013 2014 2015 2016Year
m/z 28 m/z 15 m/z 14 m/z 13
Background Counts Trending
MassRa&oReadingsDuringSameMarkerforAllRuns
819
682
546
409
Total(hrs)
273
136
0
limit
Oct‘14 Jan‘15 Apr‘15 Jul‘15 Oct‘15 Jan‘16 Apr‘16 Jul‘16 Oct‘16 Jan‘17 Apr‘17
WRPOn-Time
DuraFon–nolimit
WRPon-Fme-350hrlifeFme–138%
WRPon-offcycles–nolimit
Filament1on-Fme-265hrlifeFme–53%
Filament2on-Fme-265hrlifeFme–7%
ElectronmulFplier1on-Fme–nolimit
ElectronmulFplier2on-Fme–nolimit
WRPSwapped
25052
25060
25068
25076
25084
25092
25100
25108
25116
25124
25132
25140
25148
25156
25164
25172
25180
25188
25196
25204
25212
25220
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25236
25244
25252
25260
25268
25276
25284
25292
25300
25308
25316
25324
25332
25340
25352
25360
25368
25376
25384
25392
25400
DeltaTrend
RFTemp. BestFit(0.2325x-248.28)
EXPID–ExperimentIdenBfier
1100
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1160
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Ch11RFPressure-mbar
1140
-1
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0
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35
Tempe
rature(C
)De
ltaValu
e
TrendingRFPressureVersusTemperature–ElectricalBaselineTests–SAMFlightModelonMars
Jan‘13
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Jan‘15
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Jan‘17
1200mb
1150mb
1100mb
RawData
SAMFMValve2Func/onDuringEBTh9ps://goo.gl/HiRdOp
HARDCODEDNO
V2OPSDURINGGETTERREPAIR
LAUNCH LANDING
EARTH MARS
1
6
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3
2
VOLTAGE(V)
2009
2010
2011
Ch210:CAP+_Vmon(Capacitor+VoltageMonitor)Average
2012
2013
2014
2015
2016
2017
0
2
4
6
345 346 347 348 349
Voltage
TIME-Sec
CAP+_Vmon-October2014
MARKER102
MaximumVoltageDuringMarker102
MinimumVoltageDuringMarker102
LimitCheckReport(May2010)ShowingNon-Opera/onalV2
ImprovedEngineeringDiagnos1csforSpaceExplora1onB.D.Prats1,2,M.S.Johnson1,3,C.A.Malespin1,E.Lyness1,3,W.Brinckerhoff1,P.R.Mahaffy1andN.Dobson1,4
1NASAGoddardSpaceFlightCenter,Code699,[email protected],2eINFORMe,INC,3MicrotelLLC,4LinearLabs,LLC
• Past,presentandfutureelectro-mechanicalsystemson-earth, on-orbit, on other planets and moons must bedesignedwithsufficientdiagnosUccapabiliUestoassuresafety,accuracy,compliancyandlongevity.
• Unique technologies at the NASA GSFC PlanetaryEnvironments Laboratory enable robust system healthmeasurements during all phases of daily operaUons;integraUon,test,refurbishment,calibraUonandscience.
[1]Mahaffy,P.R.etal(2012)SpaceScienceReview170,401-478.[2]Goetz,W.etal(2016)Int.JournalofAstrobiology,Vol.15,Iss.3,239-250.[3]Brunner,A.E.etal(2013)LPSC,Abstract#2053.[4]Malespin,C.A.,etal(2015)LPSC,Abstract#2558.
Figure1.SAMValveV02HealthTrend-CapacitorRe-ChargeVoltage
• NASA S AM ( S amp l e A n a l y s i s a t Ma r s ) :Instrument suite on-board NASA Mars ScienceLaboratory (CuriosityRover) launchedNovember2011,landedAugust2012nowin5thyearofconUnuing,Mars-surfaceatmosphericandsamplescienceoperaUons[1].
• MOMA-MS (MarsOrganicMolecularAnalyzer):Linearion trap mass spectrometer built by NASA GoddardSpace Flight Center on-board ESA-Roscosmos ExoMarsRovertobelaunched2020&landingonMars2021[2].
• Missionhistorywithnineyearsofhousekeepingtrendsprovide on-going data-analysis tool development andideasfor futurespace-missionhealthchecktoolstobeusedbylife-sustainingequipmentonmanned-missions.
• ProperdesignandrobusthealthdiagnosUcsarecriUcalforsystemdesignandfortargetedoperaUonalfeatures.
Figure3.MOMA-MSEngineeringConsumablesPagefromXINA
• Marks in telemetry idenUfy very parUcular instrumentstatestoquicklyexaminescience&housekeepingdata.
• Markers allow quick and easy capture of problemsduringintegraUon,calibraUon,tesUngandoperaUons.
• Figure 1 shows SAM valve operaUon on Mars duringmonthlyelectricaltests(healthchecks)usingamarker.
• Sofware introduces marker 102 before and duringcapacitorre-chargetotrackvalveV02health.
• Valve V02 at marker 102 shows a steady, consistentfive-yeartrendforconUnuingMarsscienceoperaUons.
• Figure 2 shows temperature compensaUon tools thatremoveexternaleffects;SAMRFpressureflat&steady.
• XINA shows real-Ume consumable metrics; pumpoperaUnghours,filamenton-Ume,valvecycles,etc.
• Figure 3 shows flight MOMA-MS consumables pageincludingusageandremaininglifeofcomponents.
• TrendsprovidedbyXINA tools candetectun-expectedusageorchangesthatallowrepairpriortolaunch.
• Figures 1, 2 and 3 were created using XINA, a tooldeveloped at NASA/GSFC, that provides web-basedaccess to housekeeping and science data for SAM,MOMA-MSandfourothermissions.
• To assess instrument health, Python tools have beendeveloped to quickly idenUfy temperature, voltage,pressuresthatmaybeoff-nominal(seeinset–Fig.1).
• Figure 4 shows mass spectrometer science trendsproducedusingWaveMetricsIgorPro7&add-ons[3].
• ElectronmulUpliervoltagewas increased forSAMTestBed[4]toimprovedataasaresultofthisIGORanalysis.
• Lessons learned; disciplined use of markers early inproject can yield far bener data analysis (includingcustom tools) later and can quickly provide a robust,accessibledatadistribuUonsystemfortheprojectteam.
• These techniques, used in future space-exploraUonmissions,canassurecompliancy,longevityandsafety.
Figure4.BackgroundMassRaGoPreparedUsingIgorPro7-SAMTestBedScience–ShowingDegradaGonofElectronMulGplier
• Flight sofware and scripts for SAM and MOMA-MSwere purposely designed with the ability to uniquelymarkdatabasedoncontexttoallowdatatrending.
Figure2.RFPressureTrendingusingXINA