BlackBox Sat Critical Design Review Colorado State University-Pueblo April 2, 2004 Greg Barela Jose Segovia Enrique Cornejo Mission Description To obtain certain individual atmospheric characteristic data. Measure acceleration activity and the Earth’s magnetic force. Store and retrieve collected data. Mission Goals and NASA Benefits Collect sample satellite direction activity Observe acceleration of the Earth’s atmosphere during entire flight and landing Route gathered data from microprocessor to micro-cassette recorder. NASA Benefit: Determining direction for output video and still shot evaluation. System Requirements Payload under 1.5kg On-board power supply Heating and ventilation subsystems External power engaging mechanisms System Overview •Basic outline of system Subsystem Description We have nine subsystems which form our payload. –Sensors –Instrumentation amplifier – Relays – Signal converter –Micro-controller –Coding –Micro-cassette recorder –Shell –Heater Circuit Magnetic Field Sensor Honeywell (HMC1001) + - 3mv/V/gauss 3-5Volt supply Bandwidth is over 1MHz Analog output Accelerometer ±2 g Dual Axis Accelerometer Features 1000 G shock survival 3 V to 5.25 V Single supply operation Low Power < 0.6 mA Duty Cycle Output Instrumentation Amp Gain = Relays Double Pole Double Throw – 11.1mA contact rating – 5v coil voltage Single Pole Single Throw – .20mA contact rating – 5V coil voltage A/D Converter ADC801LCN – 5V supply – 0V-5V input voltage range – 8-bit resolution PIC16F84 18-Pin Enhanced Flash/EEPROM 8-bit µ-controller 68 bytes EEPROM 1K x 14 Program Memory Objective of Coding Digital Output Accelerometer Sensor – Calibrate – Measure Tilt – Frequency Differentiation Linear Output Magnetic Field Sensor – A/D Conversion – Port Intializing – Delays Computer Programming PICSTART Plus MPLAB SIM MPASM Assembler Flowchart Start Initialize Restore Calibration Constants Check Accel Read Accel Find X-AXIS & Y-AXIS Record measurement on tape drive Delay Sony M-560V Voice Operated Recording 2AA battery supply 90 minute tapes 300Hz-4000hz 113 grams Shell House all seven subsystems Protects subsystems from the changing environment Helps cushion on landing Shell Hardware ¼’’ foam core forms the outer shell Aluminum tape for extra strength Glue to adhere the shell Heater Circuit (3) 9V batteries (2) 6 Ohm 5 watt wire wound resistors Payload Insulation Styrofoam – Help keep subsystems from freezing – Cushions the landing – Helps protect all sybsystems System Interfaces •Complete System Overview Mass Budget Micro-cassette recorder 113g Batteries (7) 9V, (2) AA 364g Shell (Insulation, Glue) 200g All Circuitry (Sensos, IC's, Relays, etc.) 110g Heater Circuit 50g TOTAL 837g LIMIT 1.4kg Project Organization Greg Barela : purchase parts, create schematics, sensor prototyping, circuit integration Jose Segovia: sensor modules programming, sensor to micro- processor research and evaluation, output data conversion. Enrique Cornejo: Payload construction, Heater Circuit, insulation and ventilation. Budget Circuit Design Item Needed Quantity Price Greg Accelorometer(ADX202JQC) 1 $19.25 A/D Converter (ADC801LCN) $25.85 Magnetic Field Sensor(HMC1001) 2 $33.16 Solderable Ck t. Board 1 $15.00 PIC Chip ( PIC16F84A) 1 $5.63 Voltage Regulator(78L05) 1 IC CSU supplied Circuit Wire 2ft. CSU supplied Relay(DPDT) 1 $5.84 Relay(SPST) 1 $1.53 Microcassette Tapes 2 $4.99 Microcassette Recorder 1 Sears Donation Resistors, Caps, and Misc. as needed CSU supplied Programming Jose PIC Start Plus Programmer 1 CSU supplied 18 DIP Pack age Case 1 CSU supplied Satellite Box Henry Aluminum Tape 30 ft. CSU supplied Foam Core 4' x 8' $10.52 Batteries (9V) 6 CSU supplied Braided Dacron Line 2.4mm EOSS Supplied Anti-Abrasion Bushings 3.6-5.5mm x 2 $4.00 Box Materials 20" x 30"inches $+--4.99 Heater Kit 1 CSU supplied Finished Project Estimated Total = $133.76 $133.76 Schedule Ta sk Du ra tio n Sta rt F in ish Pe rso n re sp o n sib le Finalize Design 15 10-Mar 28-Mar - Power 14-Mar 31-Mar Jose Mass and power budgets 14-Mar 31-Mar Greg Presentation of PDR 1 1-Apr 1-Apr - CDR 0 2-Apr 2-Apr - shell 2 22-Mar 26-Mar Enrique insulation 2 23-Mar 27-Mar Enrique conect power 2 29-Apr 1-May - subsystems complete 0 22-Mar 26-Mar - subsystems final testing 5 5-Apr 16-Apr - subsystems enviromental testing 5 5-Apr 9-Apr - Drop test 1 6-Apr 10-Apr Team Freeze test 1 7-Apr 11-Apr Jose & Greg Vacum test 1 8-Apr 12-Apr - integration 30 12-May 20-Jun - system env. Testing 5 5-Apr 16-Apr - Drop test 1 5-Apr 16-Apr Team Freeze test 1 5-Apr 16-Apr Jose & Greg Vacum test 1 5-Apr 16-Apr - Prepare for Launch 2 16-Apr 17-Apr - Launch 0 2-Aug 2-Aug - Thanks you for your time. Are there any questions or suggestions?
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