Electrical Ground Support Equipment (EGSE) and

Transcription

1 Electrical Ground Support Equipment (EGSE) Specialised Spacecraft Check-Out Systems TELETEL, founded in 1995, is a private Greek software and hardware, design and development company with a long history in providing development services and products in the Space, Defense and Aeronautics sectors. TELETEL works very closely with the European industry and has provided software and hardware solutions to AIRBUS DEFENCE & SPACE, THALES ALENIA SPACE, EUROPEAN SPACE AGENCY (ESA), THALES AIR DEFENCE, DASSAULT, SYDERAL, SPACEBEL, TERMA, NEC SPACE and many other customers. TELETEL is a leader in Europe in the areas of testing and validation, having delivered solutions for various communication networks (legacy telecoms, radar & missile communications, avionics communications, space on-board & ground communications, etc.) and having developed various physical interfaces, communication protocols, integrated test benches, simulators, etc. Testing & Validation Solutions Protocol Test Systems for Telecoms Test Benches for Defence and Telecoms Systems Aircraft avionics test tools Specialised EGSE for satellite/spacecraft components Today isaft Product Line Since Greece's membership to ESA (2005), TELETEL invests in space technologies at an accelerating pace, being today one of the most successful Greek industries in the space market. TELETEL has developed its own product series (i.e. isaft Product Line) to address the needs of various mission EGSE, SCOE or DFE configurations: The isaft SpaceWire/MIL-STD-1553/CAN Recorder The isaft SpaceWire/MIL-STD-1553/CAN Simulator Specific instances of these products have been installed and validated in mission EGSE testbeds around Europe (SOLAR ORBITER, GAIA, EUCLID, IASI-NG etc.). The isaft products can form the core part of various EGSEs and they can specifically be used as EGSE controllers, SpaceWire, MIL- STD-1553, CAN Data Front Ends, data recording equipment, etc. They are fully certified for connection to flight equipment (FMEA, etc.) isaft SpaceWire/MIL-STD-1553/CAN Recorder isaft SpaceWire/MIL-STD-1553/CAN Simulator Specialised EGSE Building on over 22 years of expertise in testing & validation systems and with its isaft Product Line, TELETEL provides a comprehensive set of products and services related to customertailored Electrical Ground Support Equipment (EGSE) and specialised Spacecraft Check-Out Systems including: Spacecraft Interface Simulator Payload/Instrument EGSE CDMS EGSE, MMU EGSE Mechanism Drive Electronics EGSE Custom Simulators/SCOEs Simulator Data Front End Equipment (SpaceWire, MIL-STD-1553, CAN) Network / Link Monitor and Recording Equipment (SpaceWire, MIL-STD-1553, CAN) EGSE controllers EUCLID ADPME EGSE EGSE

2 EGSE components EGSE Controller Built on isaft application SW framework (isaft RTE). Monitoring, Control & Simulation functions, Scripts/Test Execution. Data Front Ends Built on isaft Simulator & Recorder. Support of various protocols including RMAP, CPTP, NDCP for SpaceWire, ECSS-E-ST-50-13C services for MIL-STD-1553, ECSS CAN / CANopen etc. Downlink Telemetry Front End Built on TELETEL s PCIe TM/TC interface boards providing up to 72 channels. IRIG interface for common timestamping / synchronization with other front ends. Discrete interfaces & I/O Front End Built on TELETEL s Digital I/O interface board or other COTS boards (e.g. National Instruments). Generation / acquisition of all ECSS- E-ST-50-14C discretes (SHP/BSM, ASM, TSM, BDM etc.). Local MMI based on the isaft graphical tool chain. Interfaces with Central Checkout System (C&C CCSDS, EDEN, other). Combination of various interfaces/ number of ports on the same platform (SpW, 1553, CAN, other) with IRIG & trigger timestamping / synchronization (FMEA available). COTS boards by TELETEL (e.g. SpW) or other suppliers (e.g. AltaDT, ESD). Support for LVDS, RS422/485, TTL electrical levels. Reception & processing of telemetry downlink data by the isaft Processing Module (CADU synchronisation, decoding (RS, BCH etc.), decryption, reassembly). Controlled by the isaft Discrete Interfaces Acquisition and Control engine SW, through the EGSE controller. IRIG interface, protection against internal failures with μs reaction time. Power Front End Built on TELETEL s Latching Current Limiters with programmable reaction and trip-off time. COTS Power Supply systems (e.g. Keysight, TTI, etc.). Automated Test & Simulation Graphical test preparation and execution environment. Automated execution of test suites. Control & monitoring by the isaft Power Supply Distribution & Control engine SW (ON/OFF, error status, voltage / current measurements etc.), through the EGSE controller. Test scripting support (Python). Parallel test suites execution. DEVELOPMENT SERVICES FOR EGSEs Customisation of EGSEs or EGSE components Integration of COTS hardware components (i.e. power, I/Os, etc.) Development, Rehosting & Adaptation of Test Suites Development of custom Test SW Applications Development of Interface Adapters, Cables & Fixtures Installation, training, support, evolutive maintenance EGSE

3 Case Study: MicroCarb Instrument EGSE The MicroCarb mission will measure CO 2 and Hydrocarbon concentrations in the earth s atmosphere on a regional scale. The concentration of these gases will be measured by studying the absorption spectra in short-wave infra-red wavelengths at high spectral resolution. The infra-red spectral measurements will be complemented by images in the visual wavelengths to determine the presence of cloud cover over the target region. The MicroCarb instrument constitutes the payload of a microsatellite that will use the Myriade platform and will be placed into a sun synchronous polar orbit at 649Km altitude. TELETEL is responsible for the design, development, integration, verification and delivery of the MicroCarb Instrument EGSE. The primary function of the EGSE is to provide the platform interfaces and external heater lines to support integration and testing of the instrument. The MicroCarb Instrument EGSE consists of: EGSE Controller (based on the powerful isaft Product Line) which: Hosts the SpaceWire interface board. Provides SpaceWire simulation & recording Provides synchronization & trigger signals acquisition. Controls the I/O Front End and acquires measurements & status. Controlled from CCS using CnC protocol. Provides real-time distribution of high rate SpaceWire science data to instrument workstations for data analysis & visualization. I/O Front End, which provides the following interfaces: Generation of one (1) BIC Reset Signal. Acquisition of one (1) DPI Status. Acquisition of one (1) BIC Temperature. Acquisition of three (3) BIC Analog Spares. Acquisition of twelve (12) NTC15K Heaters Temperature & ten (10) spares. Acquisition of six (6) PT-1000 Heaters Temperature & ten (10) spares. OS-Link Front End, which provides TM/TC interface to the MicroCarb Instrument using OS-link physical links (provided by CNES). Power Front End, which provides LCL protected mains power and heaters power to the MicroCarb Instrument. Power Isolation Unit, which provides mains filtering & isolation, protection against peaks. Test fixture for auto-test of LCL and NTC15K / PT-1000 acquisition interfaces.

4 Case Study: EGSE for the Euclid ADPME Euclid is an optical/near-infrared survey mission designed to study the dark Universe and understand the origin of the accelerating expansion of the Universe. It will use cosmological techniques to investigate the nature of dark energy, dark matter and gravity by tracking their observational signatures on the geometry of the Universe and on the cosmic history of large structures formation. The currently planned launch date is in first Quarter The EUCLID TT&C subsystem includes the Antenna Deployment and Pointing Mechanism Electronics (ADPME), which are used for the deployment and steering of the antenna assembly. TELETEL is responsible for the design, development, integration, verification and delivery of the ADPME EGSE. The EGSE controls the flight unit through its 1553 interface, simulates/acquires discrete TM/TC signals and performs closed-loop motor simulation through motor current acquisition, and simulation of position encoders and antenna deployment switch. The ADPME EGSE consists of: The EGSE Controller (based on the powerful isaft Product Line) which: Hosts the MIL-STD-1553 interface board. Hosts a high speed digitizer, which performs acquisition of the motors phases currents. Provides MIL-STD-1553 simulation & recording Controls the I/O Front End and acquires measurements & status. The I/O Front End, which provides the following interfaces: Simulation of three (3) HV-HPC signals. Simulation of one (1) HDRM switch for antenna deployment. Simulation of seven (7) TSM channels. Control of four (4) potentiometers, which are used to simulate motor position encoders, coarse & fine. Simulation of Heater loads and voltage/current acquisition. Acquisition of two (2) BSM signals. Acquisition of one (1) TSM channel. Acquisition of one (1) ASM channel. The Power Front End, which provides LCL protected 28V power to the ADPME. The Power Isolation Unit, which provides mains filtering & isolation, protection against peaks on start. The Interface Routing and Protection Unit which: Provides the interface to the ADPME grouping and distributing signals from/to all EGSE internal interfaces to the connectors/pinouts required. Provides isolation and protection of the ADPME motor interface against internal EGSE failures.

5 Case Study: EGSE for the IASI-NG MDE IASI-NG will use a passive infrared sensor to determine temperature and water vapor profiles in the atmosphere, record ocean surface and land temperatures and monitor a vast range of chemical compounds and other key variables for climate research, including greenhouse gases, desert dust and cloud cover. The currently planned launch date is IASI-NG includes the Mechanism Drive Electronics (MDE), which are used to centralize the management of all mechanisms of the IASI-NG instrument. TELETEL is responsible for the design, development, integration, verification and delivery of the IASI-NG MDE EGSE, which will allow to stimulate all MDE external interfaces and execute test scripts to validate the MDE design and manufacturing. The EGSE supports transmission triggered through external PPS with microsecond response time, common time-stamping on PPS and SpaceWire packets with nanoseconds accuracy, distribution and electrical standard conversion of PPS to external equipment. The IASI-NG MDE EGSE consists of: The EGSE Controller (based on the powerful isaft Product Line) which: Hosts the SpaceWire interface board. Hosts the trigger & synchronisation board. Hosts the motors interface current acquisition boards. Provides SpaceWire simulation and recording Controls the I/O Front End and acquires measurements & status. The I/O Front End, which provides the following functionality: Simulation of sixteen (16) HPC signals. Acquisition of fourteen (14) BSM signals. Acquisition of four (4) AN2 signals. Simulation of three (3) AN2 signals. Simulation of eleven (11) ANF signals. Acquisition of two (2) ANP signals. Provision of eleven (11) resistive loads (LASE/LARE/ Encoders). Provision of eleven (11) relay contacts for the test interface. The Power Front End, which provides LCL-protected power to the MDE. The Power Isolation Unit, which provides mains filtering & isolation, protection against peaks on start. The Interface Routing and Protection Unit, which provides connectors and cabling for routing of discrete I/Os to relevant interfaces.

6 Case Study: Next Generation Payload Computer EGSE TELETEL has been selected by a major European on board electronics supplier for the design, development, integration, verification and delivery of the EGSE for its new generation payload computer based on GR712. The EGSE includes the following interfaces: Eight (8) SpaceWire LVDS Ports. One (1) transformer coupled MIL-STD-1553 interface as a TM/TC command interface. Two (2) CAN 2.0 Interfaces. Four (4) UART RS-422 Ports. 24 bit I/O Port for driving and/or recording the GR712 GPIO lines. Three (3) power supply networks with synchronized on/off control and current limiter. Control of GR712 PPS for time synchronization. Control of remote Power ON, Power OFF and Reset of GR712 board command lines through RMAP. Front View Rear View The EGSE consists of: The EGSE Controller (based on the powerful isaft Product Line) which: Hosts the SpaceWire interface board and provides SpaceWire simulation & recording Hosts the MIL-STD-1553 interface board and provides MIL-STD-1553 simulation & recording Hosts the CAN interface board and provides CAN/CANopen simulation & recording Hosts the UART interfaces. The Power Front End, which provides power to the payload computer. The Power Distribution Unit (PDU).