Transcript Kein Folientitel

Spaceborne Electronics
and Computer Systems
TU Braunschweig
Kontakt: Prof. Dr. H. Michalik, [email protected], Tel. 0531-391-3733
R&D Activities
• Digital Processing Units for Spaceborne
Instrumentation
• High Speed, High Capacity Semiconductor Mass
Storages
• Configurable High Level On-Board Software
• Configurable Electronic Ground Support Equipments
• Radiation Testing and Reliability Analyses
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Design of Spaceborne Computers
uP-Approach Roadmap
Commercial
- static DSP´s
- dynamic DSP´s
- Risc processors
Conventional
(rad hard)
- ERC32
Custom
VHDL cores
in HD FPGA´s
- Temic 21020
- follow on´s
e.g. LEON,
Open Risc,
MIPS
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Spaceborne Computers, Examples
• Instrument DPU´s, e.g.:
– Cameras (ROSETTA,
Venus Express, SMART1)
– Particle Spectrometers
(Cluster, ACE,
ROSETTA)
in Co-operations mit MPAe,
DLR, PHI Bern, Univ Maryland
and others
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Spaceborne Electronics Design - Examples
Digital Processing Units, Conventional Approach
Rosina DPU
dedicated for the Electronic
Particle Instrument ROSINA
on the ESA Rosetta Mission
based on TEMIC 21020
appr. 3W, 3kg
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Spaceborne Electronics Design - Examples
Digital Processing Units, System-on-a-chip Approach
• Micro DPU dedicated for VMC Micro-camera on Venus
Express
• based on LEON CPU Core in Xilinx FPGA (20MIPS)
• complete DPU with CPU, up to 2Gbit SDRAM, 32 Mbit SRAM,
16Mbit PROM/EEPROM, S/C (RTU, 1355) and Sensor
Interfaces
• on 4 PCB´s within appr. 80x80x40mm volume, appr. 300g
• Next Generation with improved performance under design for
US Dawn Mission (lifetime 15 years, mission critical functions)
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Spaceborne Electronics Design - Examples
preamplifier board
Specialized Digital Preprocessing Units
Start[]
Stop[]
Start
e. g.
wired
OR
TDC
Actel FPGA
TOF-data
Stop
- TOF Calculation
- Coincidence Check
- Event Counter
- I/F
external signals
(used for coincidence check)
I/F to upper
control unit
Precise Digital Time
Measurement
Power: 100 mW
(@30kHz Event rate)
Board Space: 50 cm2
Weight: 40 gr
Time range: 0 ... 6 s
Time precision: 60 ps
max. Event rate: 400 kHz
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Spaceborne Electronics Design - Examples
Semiconductor Mass Memory Modules
High Capacity and High
Speed Memory Modules
•radiation tolerant, high reliability
•standard Interfaces
•up to 128 Gbit/Board
•2 Gbit/s data rate, shareable
between different in-/outputs,
•OHMA board size (appr. dual
Eurocard)
•0.75 kg, <16 W at full speed
Current Activities: NVTechnology (Flash/MRAM)
In Co-operation with EADS-Astrium
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Configurable On-Board Software
On-board-Command Language (OCL), a new approach for operational control
of instruments (Rosetta/OSIRIS) and platforms (GOCE, Herschel-Planck):
• Flexibility:
Upload of ground compiled scripts (UDP´s)
• Safety:
Execution by virtual machines
• Easy to use:
Upload supported by tools
Telecommands
OCL System
Patches
Very small upload size
Upload of small blocks of token code
Small upload size
High execution speed
sufficient execution speed
High execution speed
Only slightly flexible
High flexibility
High flexibility
High safety
High safety
Loss of safety
Small effort during mission
Small effort during mission
High effort during mission
Easy to use
Easy to use
Expensive to use
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OCL-System
NVRAM
POP b
Token Memory
UDP a
UDP b
Virtual Machine
Local
Memory
Timeline
14:02.4 - UDP
b
UDP Manager
Lower Level
Functions
Space Segment
Ground Segment
Source
Code
TC-Data
Compiler
SDB
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Configurable Ground Support Equipment
•
PC/Windows based systems with dedicated Plug-In cards for Sensor
and S/C Interface Simulations
•
High Speed Processing capability using 512Mbyte/s PCI technology
and dual processor systems
•
Configurable software using Ground Support Equipment Operating
System GSEOS 5
•
Can be used throughout complete development cycle of
DPU/Instrument/Unit up to mission operation and data evaluation
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Example for GSE Configuration
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Block Diagram of In Situ Radiation Test Bed
Source Control
Particle Counter
TID Headstation Controller
Monitor
Remote
Display
RS232
PC
Ethernet
Pentium
III
Processor
Main
board
Pattern
Generator
Timing Gen. H/W
PCI

RS232

RS232
Headstation Adapter
(TID Testing)
Driver
up to 8
DUTs
Pwr Switching
Current Monitoring
Headstation HS
Pattern
Generator
Keyboard
Timing Gen. H/W
Harddisk
LU Switching
(SEE Testing)
RS232
Headstation
Power Supply
Remote Control Unit RCU
up to 8
DUTs
SEE
Headstation
Controller
Fast Test Unit FTU
PC + up to 5 Headstation Controller
DUT-Test Adapter
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Contributions to Active Missions
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ACE (NASA)
– S3DPU (3 Ion Spectrometers; M, M/Q, direction)
CASSINI/HUYGENS (ESA)
– H/W Image Data Compression DISR Camera (Surface of Titan)
– DPU Magnetometer (Magnetic Field of Saturn and Titan)
GEOTAIL (ISAS/NASA)
– DPU EPIC-Instrument (Ion Spectrometer; M, M/Q, direction)
– DPU HEP-LD-Instrument (Ion Spectrometer; M, direction)
SOHO (ESA)
– DPU CELIAS Instrument (3 Ion Spectrometers; M, M/Q, direction)
– Image Integration Memory of SUMER-Instrument (IR Telescope)
WIND (NASA)
– DPU SMS-Instrument (2 Ion Spectrometers, M, M/Q, direction)
ULYSSES (ESA)
– DPU SWICS Instrument (active > 15 years) (Ion Spectrometer)
CLUSTER II (ESA)
– DPU RAPID-Instrument (Ion Spectrometer, M, direction)
– MAG Snapshot Memory, Solid State Recorder 1.25 Gbyte
INTEGRAL (ESA)
– VETO Control Unit (Galactic Gamma Ray Telescope)
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Contributions to Future Missions
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ROSETTA (ESA)
– OSIRIS DPU: DPU-S/W, MASS MEMORY, EGSE
– DPU ROSINA (2 Ion Spectrometers, M, M/Q, direction), EGSE
SOLID STATE MASS MEMORY MODULES (ESA, DLR)
– for use in CLUSTER, ENVISAT, METOP, GRACE, CHAMP, CryoSat,
TerraSAR-X, 1 - 128 GByte
MARS EXPRESS (ESA)
– DIGTOF Unit of the ASPERA Instrument (Digital Time of Flight
Measurement), Solid State Mass Memory
VENUS EXPRESS (ESA)
– DIGTOF Unit of the ASPERA Instrument (Digital Time of Flight
Measurement), SSMM, DPU HW, SW and EGSE for VMC-Camera
GOCE (ESA) and Herschel Planck (ESA)
– OCL-Software System for Platform Payload Application SW
•
EGSE´s
•
– TerrSAR-X SSMM, CryoSat SSMM, VMC
GSEOS 5 Configurable S/W for Experiment Ground Support Equipment
– running under Windows NT, used for numerous space instruments and
small satellites)
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Selected Contributions to Previous Missions
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CODAG (Uni. Jena, DARA)
– DPU CODAG (Dust Aggregation under Microgravity)
MARS PATHFINDER (NASA)
– S/W "Image Data Compression"
GIOTTO
– DPU Halley Multicolour Camera
GALILEO-PROBE
– DPU Lightning and Radio Wave Detector & Energetic Particle Investigation
AMPTE
– DPU CHEM Ion Spectrometer
Hubble-Teleskop (NASA/ESA)
– Image Compression Memory of the Faint Object Camera
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Weitere Aktivitäten
• Studie für die ESA: „Crypto Systems for EOApplications“
– Anforderungsanalyse
– Auswahl geeigneter Verfahren
– Kompatibilität zu bestehenden Protokollen
– Beispielimplementierung
• Ziel: Empfehlungen für Standardisierungen von
Crypto-Systemen in Sensorsatelliten
In Kooperation mit DSI GmbH, Bremen
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