R.F.N.T. (Radio Frequency Navigational Tracker)Main ObjectivesPossible Project ExtensionsBasic LayoutPowerPoint PresentationSoftware ImplementationAlgorithm For Operation (Initial)Algorithm For Operation (Desired)Mechanical & Control SystemsPotential Concerns / UnknownsAddressing Anticipated DifficultiesDifficulties Part DeuxPower SpecificationsTransmitterOverview of Power ConcernsPower Concerns AddressedRotating MountAntennaTransmitter/ReceiverScheduleThank YouR.F.N.T.(Radio Frequency Navigational Tracker)Josh BingamanRyan HitchlerJohn MaitinFabien NervaisMatt SharpCapstone Fall 2004Main ObjectivesCreate a vehicle that will remotely track a high frequency RF transmitter, which may or may not be stationary. Detect the signal strength of the target in order to determine which direction to go. The practical application is a golf caddy that will follow a golfer when requested.Possible Project ExtensionsAdd proximity sensors in order to circumnavigate obstacles. Cell phone used to control vehicle.GPS navigation.Signal Acquisition ImprovementAdditional RF controlled functions.Basic LayoutBase of vehicle Antenna UnitProcessor (Inside Base)Processor/ Main BoardRSSIMotorDigitalCompassMotor (Left)Motor (Right)Digital CompassMotorControlGPIO?GPIORS/232RS/232Base of VehicleAntenna UnitHardware Block DiagramSoftware ImplementationOne basic algorithm, two variationsInitial designAntenna stops spinningUnit stops to turnDesired designAntenna continuously spinsUnit turns dynamicallyAlgorithm For Operation (Initial)Algorithm For Operation (Desired)Mechanical & Control SystemsPotential Concerns / UnknownsRotating Antenna & Motor MountAntenna Construction & Actuator TorqueGround Wheel Control Sensor Resolution TerrainTower Height ControlAddressing Anticipated DifficultiesRotating Antenna & Mounting MotorWheel vs. chainHow to attach, depends on dimensionsAntenna Weight / Shape & Actuator Torquedependant upon antenna implementationwind resistance, etc…Ground Wheel Control motor specs unknown, researching new motorspossible substitutes – how to mount??Difficulties Part DeuxSensor ResolutionCompass magnetic distortion maybe presenthard-iron calibration should be performedData acquisition issuesFrames of referenceTerrain too roughconsidering additional functionality, safe mode / shutdownvehicle durabilityTower Height Control motor specs unknown, may not be necessaryAutomate signal queryPower Specifications12V car Battery, AA/AAA Battery, Dry CellTwo 12V wheel motorsOne 5V antenna motor Base and antenna Circuitry Low-powered transmitterTransmitterLow power transmitterideally a remote (key-fob)Overview of Power ConcernsPower transformation on navigational unitPower noise due to rotationPower cable routing to rotating mountPower Concerns AddressedPower transformation on navigational unitVoltage regulatorsNoise due to antenna rotationDecoupling capsPower cable routing to rotating mountRotating contact platesRotating Mount•Transmitters•Grooved Plates•SoftwareAntennaRotating MountShielded Unidirectional AntennaDigital Compass mounted with AntennaSynchronization of Compass and AntennaTransmitter/Receiver•916 MHz RF•16 Bits Transferable•RSSI (Relative Signal Strength Indicator)ScheduleThank
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