Slide 1Project OverviewFeaturesStructural SetupSlide 5LayoutSlide 7PCB Layout – Power ConvertersSchematic for 3.3V buck converterSchematic for 12 V Buck-BoostSchematic for 24V BoostProgressSlide 13Sensors ProgressAnalog/Digital ConverterSensorsSlide 17Current SystemSlide 19Our SystemExpo Demo SetupSlide 22Microcontroller – ATxmega64A1Slide 24Code FlowMonitor and Control AlgorithmSlide 27Memory – SD CardSlide 29Slide 30Memory: Prototype Setup and Timing DiagramsSlide 32GSM CellularFBD: GSM ModuleSlide 35Slide 36GSM Cellular - ProgressSlide 38Slide 39Base StationGSM CommunicationMCU CommunicationInterface CommandsSlide 44DAQFactory User InterfaceDivision of LaborBudgetMilestone 1Milestone 2Questions?Jake BaldwinKrista HaslingMaryam Moghaddam-ZadehJack OakesScott WisdomProject OverviewProject OverviewS.C.A.D.A. systemManna Energy Foundation , RwandaWater PurificationProject ObjectiveRemotely determine system healthPerform control operations based on use (autonomous and supervisory)Report and recordFeaturesFeaturesThis design goal:32 External ADC’s 6 Relay/Valve controls4 Bus Power3 Bus DataGSM communicationMemory SD cardDemo will not include max number of sensorsStructural SetupStructural SetupSystem Block DiagramSystem Block DiagramSystem Block DiagramSystem Block DiagramSchematic for 3.3V buck Schematic for 3.3V buck converterconverterUses LM3100 ChipSame as 5V and 10V buckSupplies max currents of 1.5 APredicted max current needed is <1 ASchematic for 12 V Buck-BoostSchematic for 12 V Buck-Boost Uses LM5118 Converter can supply a max current of 3.5 ampsPredicted Max current < 1.5 AmpsSchematic for 24V BoostSchematic for 24V BoostUses LM3488Max current of 3.4 AmpsPredicted max value <1 AmpProgressProgressConverters and PCB are designed and orderedNo implemented circuit protection yet….Separating headers on current PCB will be removed for finished projectSystem Block DiagramSystem Block DiagramPressure Meter 1Pressure Meter 2Flow MeterUV lightValve12 Vdc5 Vdc5 Vdc24 Vdc240 VacADCADS7828MCATxmega64A1I2C0- 5 Vdc2- 40 mA0- 12 Vdc0- 5 Vdc3.3 Vdc0- 12 VdcAnalog/Digital ConverterAnalog/Digital ConverterSensorsSensorsFlow Meter•Signet 2551•No device due to cost ($1500 each)•Using a direct current output to act as device in testing•2 devices per system•Output: 4 to 20 mA•Temperature: -20° to 70° CPressure Meter•Omega 209•2 devices for testing•6 devices per system•Output: 0 to 5 V at .0125 V/division•Temperature: -20° to 80° CSensorsSensorsTerminal Block•PT 1935006•PCB attachment for ADC to sensors•16 connectionsBrass Actuated Ball Valve•DynaMatic AP20DA•1 device for testing•Temperature: -15° to 300 ° CUV lights•Sterilight with ICE controller•1 device for testing•Water temperature: 2° to 40° C•UV wavelength: 254 nm•SP100-HO: 11 gpm•9000 hours of useWater Collection TankWater Storage TankFilter 1UV light 1UV light 2Pressure PressureFlow*No Flow Meter due to costPressurePressureUV lightValve“Flow”PumpSystem Block DiagramSystem Block DiagramMicrocontroller – ATxmega64A1Microcontroller – ATxmega64A1Calibration of internal 32 MHz RC DFLL oscillatorInitialize and use communication modulesSPII2CUARTSample sensors with timer interruptLog data to SD CardParse and execute commands from cell module and base-stationMonitor and control using programmed algorithmImage source: http://www.atmel.com/dyn/resources/prod_documents/doc8067.pdfSD CardRS-232DebugPortADCPDIPortSPIUARTUARTDMAI2CI2CBuses and ConnectionsBuses and Connections32kHzXTALSerial-to-USB IC(to base-station)CellModuleATmega32Code FlowCode FlowInitializemodulesPower onIdleSamplesensorsTimer 1 interruptWritemeasurementto SD Cardover DMAReadmeasurementfrom SD CardSendMeasurementOver CellMeasurementssatisfy algorithmconditions?Performalgorithmresults ofsatisfied conditionsYesREADParse commandReturn to IdleNoCommand from base-station or cellOtherbase-station/cell commands...WRITEXXXXMonitor and Control Monitor and Control AlgorithmAlgorithmStructure of one software algorithm block…With additional blocks, control is a “sum of products”Condition 1Condition 2Condition n&& …Result 1Result 2Result n&& …Monitor and Control Monitor and Control AlgorithmAlgorithmCondition types:Threshold(Value, Above/Below, SensorID)True/False(Condition)Result types:ChangeValve(Closed/Open)ChangeRelay(On/Off)SendAlert(AlertType, Method, Value)Memory – SD CardMemory – SD CardUse 512-byte block sizeMicrocontroller allocates 512-byte buffer that can be read or written toSPI at 4MHzHash table between time stamps and block addresses (grouped by day and hour)Memory: SchematicMemory: SchematicMemory: Process Flows for Memory: Process Flows for SD CardSD CardSD Card Initialization:SD Card Read Cycle:SD Card Write Cycle:GO_IDLE_STATE traceSEND_OP_CONDtraceSystem Block DiagramSystem Block DiagramGSM CellularGSM CellularAVR-GSMCalling cardEmbedded antennaDirect interface for USB terminal communicationOff board connectors for power and busesFBD: GSM ModuleFBD: GSM ModuleSerial InterfaceSerial InterfaceSIM300DFTDISERIAL-USBATMEGA32I2CXMegaLaptop12Volt DCPrototype Components2 PIN PowerEXT I/OUSB PORT6 pin ISP26 Pin IOI2C-DAQFactory-Real Term-Prototype power-’Wall’ powerGSM CellularGSM CellularATxmega64 /ATMega32SIM300 Bus/ATMega32I2C with defined commands‘Get’ and ‘Set’2 BuffersData Transmit (~160 byte)Data Receive (~160 byte)100Khz ~ 400KhzExternal connections12V, GND, SCL, SDAISP programmerUART commands‘AT’ ASCII commands2 BuffersUART RX 256 bytesUART TX 256 bytes3x30 SIM300 BuffersStatus buffer/byte115K2 desiredCode FlowCode FlowPeripheral Init (UART, I2C)Status ByteCellular InitMonitor TrafficUpdate StatusGSM Data ReceivedUpdate StatusNo DataYesMCU Data RequestForwardNoData AvailableMCU CommandBack to Monitor TrafficMCU Send DataGSM Cellular - ProgressGSM Cellular - Progress+Text messaging works (AT&T)+Uart for ATmega32 works (interrupt)+I2C master configured for ATMega32 (interrupt)-Needs to be slave+Fully defined status byte, bus protocol-Perform simple Uart/I2C test via terminalSystem Block DiagramSystem Block DiagramBaseBase StationStationBase StationBase StationTwo ways of communication:Serial to Microcontroller (and ADC)Serial to GSM moduleTwo drivers on