Fike FVA-IP - Difference in Functional and Operational Conformance; Factors Affecting Functional Conformance; Factors Affecting Operational Conformance

Installation and Operation Manual FVA-IP Camera
32 P/N 06-523 (Rev. 6) Revision Date: June, 2019
6.1.3.1 DifferenceinFunctionalandOperationalconformance
Functionalconformanceisdefinedbythemethodofdetectionbeingvalidandapplicableforthegivenconditionsand
isdeterminedprimarily by a systems specification.  Operationalconformanceis affectedbythedeteriorationofthe
systemperformanceovertimeduetosuchissuesasthelongtermapplicabilityofthesystemandtheenvironmental
andnaturalfactorssurroundingthecamera.
6.1.3.2 FactorsaffectingFunctionalConformance
The FVA‐IP camera based system should only be applied in ways that conform to our manufacturers’
recommendations.Thoseinclude:
 Minimum/Maximumdetectionrange
 Minimalsizeofflametobedetected
 Minimalsizeofsmokeplumetobedetected
6.1.3.3 FactorsaffectingOperationalConformance
AmongfactorsaffectingOperationalConformancearetheenvironmentalandnaturalfactors.
1. Environmentalfactorsdirectlyaffecttheintegrityofoptics(lenses)resultingindeteriorationofimagequality
beyondthelimitsprescribedbythemanufacturer.
2. Natural factors are caused by aging of the components of the system causing deterioration in overall
performanceorcatastrophicfailureoftheentiresystem.
3. Man‐made factors such as alteration of lens focus, capping the lenses, alteration of camera position and
direction.
The FVA‐IP camera detects fire and smoke by applying sophisticated image analysis algorithms to digitized video
imagesacquiredbytheCMOSsensor.Onecandividethisprocessinto2stages.Thefirststageisformationofthe
imageandacquisitionintothedigitalform.Thesecondstageistheprocessingofthesequenceofdigitizedimages.
Thefirststageisanaloginnaturewhilesecondstageisdigital.Theimplicationofthisdivisionisveryimportantfor
howonewilladdresstheconformancetestingmainlybecausesecondstagecannotdeteriorategraduallyovertime.If
componentsofthesysteminthesecondstagedegradebeyondtheacceptablelimit,thesystemsimplyfailsresulting
in an off‐line condition.  For the first stage, such deterioration, primarily optical integrity or degeneration of the
sensitivityofthesensorwillresultinsignificantdegradationoftheacquiredimagequalityandwillbedetectedbythe
secondstageasfaultconditionandreportedaccordingly.
TheFikeVideoAnalyticsbuilt‐inself‐diagnosticswilladdressmostaccidentalman‐madefactorsandwillreportfaultsif
thecamerais out‐of‐focus,coveredor has beenturnedtowardsthewall.Minor alterations ofthecamerasfieldof
viewisaddressedbythesemi‐annualinspection.
It is important to note that self‐diagnostics of the image quality is an integral part of the detection analytics.  The
image acquisition, alarm algorithms, diagnostic process and communication are all interconnected. Therefore, the
detection part of the analytics cannot fail without the diagnostics part as well as the image processing chain and
communicationbeingleftunaffected.Asinanydigitalcomputersystem,itwillbeanall‐or‐nothingfailurewithany
failureresultinginaclosureofthetroubledry‐contactsandalossofsignaltotheuserinterface.