Team Flying CamelsDriftsonde System OverviewSlide 3Recap on ConstraintsSystem ImplementationSystem ImplementationSlide 8Serial to CAN Bus LinkGondola RF ControlSonde SchematicRF Link Firmware Flowchart: GondolaRF Link Firmware Flowchart: SondeSolar PanelsPeak Power TrackerPower System SchematicBatteriesSlide 18Slide 19Power System Firmware FlowchartCurrent State of ProjectCurrent State of ProjectParts ListGantt ChartDivision of LaborQuestions/ Comments?Team Flying CamelsNawar ChakerPete DokterTim JacobsAdam SwartleyPaul SavageCapstone ProjectFebruary 24, 2005Team Flying CamelsCapstone ProjectDriftsonde System OverviewThe National Center for Atmospheric Research, NCAR, currently has a successful project involving a high altitude pressure balloon that periodically drops sensors (sondes) from a payload NCAR would like to extend flight time, increase maximum number of sondes to fifty while keeping the balloon size the sameWe are working on a new power system, health monitor system and a release mechanism to meet specific constraints given to us by NCAR to achieve their goalsNawarTeam Flying CamelsCapstone ProjectDriftsonde SystemA T L A N T I C O C E A NZ e r o - p r e s s u r eB a l l o o nG o n d o l a( 2 4 s o n d e c a p a c i t y )6 h o u r sb e t w e e nd r o p sN O R T HA M E R I C AE U R O P EO r b C o m mL E O S a t e l l i t eIridium LEO SatelliteGondola(20-40 sonde capacity) ~16km50-100 mb© 2004 Copyright University Corporation for Atmospheric ResearchTeam Flying CamelsCapstone ProjectRecap on ConstraintsPower system -A total weight of no more than 3Kg, including solar panels, control system and batteries-Batteries need to power the system for 24 hours without recharge-Solar panels need to replenish the batteries enough to power system for ten daysRelease Mechanism-Must be wireless and must be addressable to fifty sondesCost constraints have become secondary to functionalityNawarTeam Flying CamelsCapstone ProjectOverall System DiagramSonde RF ControlSonde RF ControlSonde RF ControlSonde RF ControlSonde RF ControlSonde RF ControlSonde RF ControlRF Mod RF Mod RF ModRF ModRF ModRF Mod RF ModRF ModuleGondola RF ControlPower System Control232 to CAN InterfaceLaptopSolar PanelsSolar PanelsTwo Way RF LinkNawarTeam Flying CamelsCapstone ProjectSystem ImplementationAll hardware will be prototypedWill not be doing board layoutsWill be simulating the gondola control system through hyper terminal, which will interface to the CAN busTwo PIC’S will be used: -PIC18F258-CAN bus capabilities-Five A/D converters-PWM-PIC16F628A-Inexpensive and simple-Will runs on 3.3 VNawarTeam Flying CamelsCapstone ProjectSystem Implementation RF Modules:-Fully contained units with antennas-2.4GHz, 1M bit data rateSolar Panels-Four Iowa thinfilm panels-Rated at 15 V and 100mAPeak Power Tracker-Maximizes power outputBatteries-Six Lithium Ion rechargeable -3.7 V, 2000mA-hrs-2x3 configuration for the battery packNawarTeam Flying CamelsCapstone ProjectSystem ImplementationProgramming tools-MPLAB IDE 7.0-MPLAB C18 Compiler-Will program the chip via EPIC programmer, using X-2 development boardNawarTeam Flying CamelsCapstone ProjectSerial to CAN Bus Link 1234567891110J1D Connector 9C1+1VDD2C1-3C2+4C2-5VEE6T2OUT7R2IN8R2OUT9T2IN10T1IN11R1OUT12R1IN13T1OUT14GND15VCC16MAX2321uFC1=Value1uFC2=Value1uFC3=Value1uFC4=Value+5V1uFC5=ValueMCLR/VPP1RA0/AN0/CVREF2RA1/AN13RA2/AN2/VREF-4RA3/AN3/VREF+5RA4/T0CKI6RA5/AN4/SS/LVDIN7VSS8OSC1/CLKI9OSC2/CLKO/RA610RC0/T1OSO/T1CKI11RC1/T1OSI12RC2/CCP113RC3/SCK/SCL14RC4/SDI/SDA15RC5/SDO16RC6/TX/CK17RC7/RX/DT18VSS19VDD20RB0/INT021RB1/INT122RB2/CANTX/INT223RB3/CANRX24RB425RB5/PGM26RB6/PGC27RB7/PGD28PIC18F258PIC18F258-I/SP.1uFC84.7KR1+5V +5V.1uFC912345678SN75LBC031+5V.1uFC1012XTAL118pFC618pFC7CANLCANHPeteTeam Flying CamelsCapstone ProjectGondola RF Control12345678SN75LBC031#2+5V.1uFC11VCC14A12GND7OE11Y13A25Y411OE24OE413Y26A412A39Y38OE310MM74C906+5V4.7KR2+5VMCLR/VPP1RA0/AN02RA1/AN13RA2/AN2/VREF-4RA3/AN3/VREF+5RA4/T0CKI6RA5/AN4/SS/LVDIN7VSS8OSC1/CLKI9OSC2/CLKO/RA610RC0/T1OSO/T1CKI11RC1/T1OSI/CCP212RC2/CCP113RC3/SCK/SCL14RC4/SDI/SDA15RC5/SDO16RC6/TX/CK17RC7/RX/DT18VSS19VDD20RB0/INT021RB1/INT122RB2/INT223RB3/CCP224RB425RB5/PGM26RB6/PGC27RB7/PGD28PIC18F258#2PIC18F252-I/SP4.7KR3+3.3V4.7KR4.1uFC12+3.3V+3.3V.1uFC13Cap12345678910TRF2.4G+3.3V.1uFC1412XTAL218pFC1518pFC16CANHCANLPeteTeam Flying CamelsCapstone ProjectSonde Schematic12345678910TRF-2.4GHeader 5X2ARA0/AN017RA1/AN118RA2/AN2/VREF1RA3/AN3/CMP12RA4/T0CKI/CMP23RB0/INT6RB1/RX/DT7RB2/TX/CK8RB3/CCP19RB4/PGM10RB511RB6/T1OSO/T1CKI/PGC12RB7/T1OSI/PGD13VSS5RA5/MCLR/VPP4RA7/OSC1/CLKIN16RA6/OSC2/CLKOUT15VDD14PIC16F628A+3.3V.1uFC1+3.3V.1uFC21KR1+3.3VQ1PN2222ADS1LED010R3330R4VCCVCCDS2LED0330R5DataCLK1DR1CSPeteTeam Flying CamelsCapstone ProjectRF Link Firmware Flowchart: Gondola PeteClock out DataCheck for ACKINIT for RX,(delay) wait for RXINIT for TX,Transmit addressand commandWait for TX Commandfrom CANYesGood ACK?NoNoDR High?YesStartTeam Flying CamelsCapstone ProjectRF Link Firmware Flowchart: SondePeteINIT for RX,Wait for RXWAKE UPNoYesPower Downfor sleep periodYesYesWas last Command todrop? Execute commandINIT for TX,send ACKGood Address?Clock out DataCheck addressDR High?NoYesPower DownNoTeam Flying CamelsCapstone ProjectSolar Panels MPT15-150 by Iowa thinfilmOperates at 15.4 V and 100 mATotal weight of 26.0gWill wire four in parallel to keep the voltage steady and provide the needed current TimTeam Flying CamelsCapstone ProjectPeak Power TrackerI-V characteristic for the solar panelsPeak power tracker finds the maximum power point on the curveThis is necessary for maximum efficiencyTimTeam Flying CamelsCapstone ProjectPower System Schematic220uFC1220uFC2Q1MOSFET-PT1TransD1Diode2R1Res1.005R2Res14.7KR3Res11KR4Res112JP1Header 2SP+GNDPULSETRAINChargeCurrentBatt+.1uFC34.7KR5Res11KR6Res1.1uFC4CapSPVoltage23647185TSC427Op AmpPULSEFROMPIC.005R7Res1SP-12*SOLAR PANELJP223647185LM258Op AmpAtoPIC1KR8Res11KR9Res11KR10Res11KR111KR12Res11KR13Res11uFC51uFC6BtoPICMCLR/VPP1RA0/AN0/CVREF2RA1/AN13RA2/AN2/VREF-4RA3/AN3/VREF+5RA4/T0CKI6RA5/AN4/SS/LVDIN7VSS8OSC1/CLKI9OSC2/CLKO/RA610RC0/T1OSO/T1CKI11RC1/T1OSI12RC2/CCP113RC3/SCK/SCL14RC4/SDI/SDA15RC5/SDO16RC6/TX/CK17RC7/RX/DT18VSS19VDD20RB0/INT021RB1/INT122RB2/CANTX/INT223RB3/CANRX24RB425RB5/PGM26RB6/PGC27RB7/PGD28U1PIC18F258-I/SPVCCVCCCANRXCANTXVCCD2DiodeVinVoutGND78M05Volt Reg.005R16100pFC8Cap100pFC7Cap12JP3Header 2VCC23647185AR3Op