英文材料部分范文

英文材料部分范文英文材料部分范文 The followingpages containsa descriptionof eachof themain system ponents of the DataChief C20Alarm and monitoring system The followingsystemponentsare described Remote operatorstation Local Operator Stations Watch BridgeUnit Watch CabinUnit Distributed Processing Units Gateways1 4 1Remote operatorstation The Remote Operator Station is a typeapproved personal puter connected toa colour graphics displayand a printer Operator inputis eitherdone througha standard personalputerkeyboard orthrough ourcustom madeOperator Control Panel The Operator Control Panelis aspecially designedkeyboard thatprovides easyaess to the differentoperator functions It isdivided intoseparate function areas Buttons arebined withlamps toindicate alarms status ofthe ExtendedAlarm Systemand toindicate mainsystem functions The Operator ControlPanelis inmany casesconnected toan external sound off button The Remote Operator Stationcan besupplied withaprinter for on demand printing an alarmprinter log printeror colourhard copyunit When aDistributed Process Unit detectsan alarm condition the alarm is identifiedby aflashing indicatoron theOperatorControlPanel The alarm is alsodisplayed on the colour graphics display a buzzeris turnedon andthe AlarmPrinter automaticallyprints the alarm By pressingthe buttonassociated withthe flashingindicator moredetailed alarminformation isdisplayed on the colourgraphics display Detailed sensorinformation forany DistributedProcessUnit such as alarm ornormal statusdata can alsobe shownon the colourgraphics display or printedondemand Analogue sensordata can be presentedasabargraph ora trendcurve Selected sensordata may be printedautomatically atfixed intervals The systemcan displaythe latestalarms foreach alarmgroup individuallyor allactive alarms The loggingprinter andthecolourgraphicsdisplayrecords allstatus changes such asalarm acknowledgementsand alarm condition cleared When allalarm conditionsare cleared the systemreturns tonormal Alarm limitsand delaysare adjustablefrom theOperatorControlPanel A counterfunction keepstrack ofrunning hoursfor engines pumps andrelated items This functioncan alsoaumulate flow Counter valuesare shownon thecolourgraphicsdisplay ormaybe printed TheRemoteOperator Station is usedwhen transferringmachinery watch responsibility betweenbridge andengine control room Selecting the engineer forwatch call dutyis carriedout fromhere and allavailable engineers whether onduty ornot maybecalled to the engine control roomin thecase of an emergency 1 4 2Local operatorstation TheLocal OperatorStationisan optionaloperator controlpanel It includesa fourline by40characters LiquidCrystal Display LCD display and push buttons foroperator interaction It isused toallow localaess to the Distributed Processing Unitsfor inspection of processvariables local operationof equipment simulation ofinput output signals adjustment ofparameters and inspectionofthe built in diagnostics All Distributed ProcessingUnitsconnected tothe sameCAN busas the Local OperatorStation areaessible As soonas connectionis established theLocal OperatorStationis ableto controlthe selectedDistributed ProcessingUnit The dialoguesare definedby thefunctionality ofeach individualtype ofDistributedProcessingUnit If aDistributedProcessingUnit isisolated fromthe restofthe system because ofamunication break down or becausethe RemoteOperatorStationhas developeda seriousfault all thenecessary alarmandmonitoringfunctions canas anoption beavailable locally Detailed informationon thetype ofalarmand itssource isthen availableat theLocalOperatorStation 1 4 3Watch BridgeUnit Twodifferent typesof Watch Bridge Unitsexist an LEDand aLCD type Both areused toindicate and aept thetransfer ofmachine watch responsibility betweenbridge andengine control room The LEDtype hasmore alarmindicators andthe LCDtype hasa displayto showalarms inclear text When the bridge hasthe machinery watch responsibility one ormore engineersmust beon call A general alarm signalwill call them tothe engine control roomif an alarmconditionarises The alarm indication on theWatch BridgeUnit isthat abuzzer soundsand asingle or group alarmlamp isflashing When analarmis acknowledged in the enginecontrol room or thesituation iscleared appropriate indicationsare givenon the WatchBridgeUnit The DataChief C20prevents the bridge fromassuming watchresponsibility ifno engineersare assignedto on call duty The bridgepersonnel maycallthe engineers on duty in their quartersat anytime for consultatioc Acknowledgement ofsuch callsare provided Alarm indicationcan beprovided when thebridgeis nothaving the machinerywatch Indicators showwhen analarm hasbeen acknowledged in the enginecontrolroom butthe buzzeris notSounded 1 4 4Watch Cabinunit Twodifferent typesof Watch Cabin Unitsexist an LEDand aLCD version Both areused toindicate engineroom alarms They areplaced intheengineers cabins and in publicareas The LEDtype hasmore alarmindicators andthe LCDtype hasa displayto showalarms inclear text To setthe machinerywatchresponsibilitysystem tobridge modeone ormore engineersmust beon call When analarmconditionarise ageneralalarm signal issounded inthe dutyengineers cabinsandinthe publicareas The visualalarm indicationontheWatch CabinUnit consistsof single orgroup alarm lamps When thebridge hasthemachinerywatchresponsibility one ormore engineersmust beoncall When analarm situationour the alarmsignalwill begiven both inthe duty engineerscabinandinthe publicareas The visualalarmindicationontheWatchCabin Units arethat abuzzer soundsandasingleorgroupalarmlamp isflashing The engineerwill thennormally gototheenginecontrolroom tofind thecauseofthealarm When thealarmisacknowledgedintheenginecontrolroom or thesituation iscleared thealarmcondition iscleared fromtheWatchCabinUnits If theengineer doesnot acknowledgewithin aspecified periodof time the alarmsignalis repeatedintheengineers quarters and onthebridge until itisacknowledged The systemcan alsobe usedto callan engineertothebridge ortheenginecontrolroomwith outanalarmcondition Alarm indicationwithout soundingthe buzzeris configurablewhentheWatch CallingSystem isin off duty mode Ship Viewerisasoftware packagethat runsonastandardpersonalpu