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SeniorProjectFinalReport:DirectTirePressure&TemperatureSystemDesignTeam2WilliamR.AdkinsRichardBraunChun-TeLuMingjianSiFacultyAdvisorDr.NathanIdaApril28,20030TableofContentsListofFigures2ListofTables3ListofAcronyms4Abstract5Introduction6DesignSpecifications8AcceptedTechnicalDesign11WheelSegment18Codefor12C67123CarSegment30Codefor16F87738TestingProcedures54FinancialBudget59ProjectSchedule62Fall200263Spring200364DesignTeamContactInformation65Conclusions66AppendixA69AppendixB741ListofFiguresFigure1:SensorSignalFlowChart12Schematic1:WheelSegment13Schematic2:CarSegment14Picture1:SensorConnectiontoWheel18Picture2.BoxhousingallC/Scomponents30Picture3:in-carinstallation,fromdistance.57Picture4:in-carinstallationsystemoff.58Picture5:Wireconnectionstocar59Figure2:Microcontroller(u2)CodeFlowChart52Figure3:Microcontroller(u2)DiagnosticFlowChart53ProjectScheduleFall200263ProjectScheduleSpring2003642ListofTablesTable1:ReferenceDesignatorsforSchematic15Table2:PinConnectionsforu1,theMicrochip12C76121Table3:W/Scodefunctionsandvariables22Table4:PinConnectionsfortx1,RadiometrixTX2-433-40-3V27Table5:PowerBudgetforWheelSystem28Table6:Pinconnectionsforrx1,RadiometrixRX2-433-40-5V31Table7:Pinconnectionsforu2,MicrochipPIC16F877A34Table8:PinConnectionsforLCD1:CN1,35Table9:C/Scodefunctionsandvariables35Table10:WorkBudget59Table11:MaterialCost603ListofAcronymsCarSegmentC/SCommunicationsSegmentComm/SDisplaySegmentD/SReceiverSegmentRx/SSensorSegmentS/STransmitterSegmentTx/SWheelSegmentW/S4AbstractIncorrecttireinflationandhightiresurfacetemperaturesarehazardstothesafetytoallthosetravelingthehighways.Tocombatthisproblem,thedesignteamplanstobuildasystemthatwillmonitorthepressureandtemperatureofanautomobiletire.Afterdoingconsiderableresearch,theteamhasdeterminedthefollowingto
