ARLISS2005 SOKA UNIVERSITY Team Nexus · SOKA UNIVERSITY CanSat Nexus Tiger Hideyuki Matsunag...
Transcript of ARLISS2005 SOKA UNIVERSITY Team Nexus · SOKA UNIVERSITY CanSat Nexus Tiger Hideyuki Matsunag...
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ARLISS2005SOKA
UNIVERSITYCanSat
Nexus TigerHideyuki MatsunagYusuke ShizumaNoriko YamamotoProfessor Seiji Kuroki
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Mission
Mission1 Successful communication of Up-link & Down-linkdescribed below.Mission2
Configuration control of FPGA( Field Programmable Gate Array) from a peripheral devicefor our future CubeSat.
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System
PIC18F452
OBC FPGA
FlashRom
AddressData
REWE
CS
SCKSDISDO
Command_F
nConfigDATA0DCLK
nSTATUSCONF_DONE
INIT_DONE
GPS
GPS_Rx
ELE_Register
SPI_ROM
COM_Interface SPI_ROM
COM_Register
Configuration
CommandDecoder
Timer
TNC_Tx TNC_Rx
TX RxCommunication
FPGA
Temperature sensor
Acceleration sensor
Controller
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Device detailsPIC18F452 PICEPF10K100E FPGA(FLEX)EP1C3T100 FPGA(Cyclone)Vx-1,Vx-2 Transceivers
78T05CT 5V RegulatorTA48M025F 2.5V Regulator
CR-V6×6 Battery
M25P16 ST FlashRomEPC2 Configuration RomFX614 Modem Chip
TA48M033F 3.3V Regulator
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Pictures
GPS Battery
Temperature SensorAcceleration
Sensor
TransceiverPIC
OBC_FPGA COM_FPGA
ROM
Transceiver
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Structure
Size : Open Class 140mm×200mmWeight : 1100g (50g over)Material: CFRP(Carbon Fiber Reinforced Plastics)
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Communication• Frequency
Down Link 430MHz BandUp Link 144MHz Band
• ProtocolAX.25 1200bps
• RadioYAESU Vx-1,Vx-2
• AntennaDownlink & Uplink SRH805 (gain 0dB)
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Power
• BatteryCR-V3(3V) × 3
• Voltage transformerRegulator (transform to 5V,3.3V,1.5V)
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Ground Station
Yagi Antenna GP Antenna
PCTH-D7
Up-linkDown-link
TNC VX-2PK-96
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ResultMission1
We could communicate successfully.However, we found a communication problemwithin OBC FPGA and Communication FPGA. Mission2
We could control configuration of FPGA.OBC FPGA has re-configured by timer &command from ground station in this time
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Conclusion
We will figure out the communication errorWithin OBC FPGA and communicationFPGA.We will make much better cubesat by using this lessons.
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Thank you for your attention.If you want to know more details, Please don’t hesitate to ask us.
Team Nexus