CAN: from Components to Minisatellites

Transcription

1 CAN: from Components to Minisatellites

2 COMPANY OVERVIEW 2

3 A worldwide leading Transportation and Aerospace Group SYNERGIC HIGH-TECH COMPANIES WITH HIGHLY SKILLED EMPLOYEES Railway Space Aviation 3 3

4 SITAEL Overview Largest Italian and privately owned Company operating in the Aerospace Sector. More than 300 high qualified employees and state of the art facilities Extensive heritage in all Design, Development, Production and Qualification processes for Small Satellites, Advanced Electric and Chemical Propulsion Systems, Earth Observation and Science Payloads, Platform and Payload Avionics from equipment down to complex component level. Leading contractors and preferred partners for many stakeholders in several international space projects. 4 4

5 International Plants Mola di Bari, ITALY UK NEXT OPENING Pisa, ITALY Forlì, ITALY Florence, ITALY NEXT OPENING Rome, ITALY FRANCE NEXT OPENING Salonicco, GREECE 5 5

6 EARTH OBSERVATION, SCIENCE and EXPLORATION Celebrating 20 years working for Space Missions SOLAR ORBITER INTEGRAL ATV CURIOSITY EXOMARS AMS01 AMS02 GAIA CALET MPCV ASTRO-H ASIM PAMELA SWARM CSO MTG SENTINEL 3 SENTINEL 1 EARTHCARE CSG 6

7 Main Customers 7 7

8 CAN: FROM COMPONENTS TO MINISATELLITES 8

9 SITAEL CAN Bus Experience at a glance HurriCANe ALPHA version is provided by ESA for completion and verification against BOSH testbenches First ASIC prototypes in DMILL CMOS 0.8um process Collaboration with Alenia Spazio and Roscosmos to develop a new CAN bus controller with 3 mailboxes and ucu I/F (CASA2) for ATV fully compliant with CAN 2.0B protocol The new CAN bus Controller (HurriCANe core version 5.0) is delivered to ESA CASA2 is licensed to ATMEL and manufactured with MG2RTP Rad-hard Sea of Gate (P/N AT7908E). CANTRAN ASIC and AmCAN IP Core are developed and tested in the frame of an ASI contract. HurriCANe core IP update (version 5.2.3) - last by SITAEL Final Presentation of IPPM with a Demo session in ESTEC ESEO Phase C0/C1/D/E1 development start. CANopen Controller IP Core (CCIPC) is delivered to Thales Alenia Space in the frame of an ExoMars Contract CCIPC improvement for SATCOM Payload and Platform Management 9

10 CAN Controller ASIC Function: Stand Alone CAN controller fully compliant with Bosch CAN 2.0B Standard (*) with 8 bit programmable MCU interface Technology: ATMEL MG2RTP: Rad-Hard Sea of Gate 0.5 um Features: Latch up immune Total Dose > 300Krad, SEU free Operating Freq. 16 MHz Package MLCC 44 pins Screening QML-Q or QML-V (*) SITAEL has a Bosch GmbH CAN license for ASIC-manufacturers ATMEL part number: AT7908E 10 10

11 CAN R&D Activities CANTRAN: 5V CAN transceiver for Space Applications Technology: AMS 0.8 µm CXZ high voltage Features: Selectable and programmable slew control (up to 1Mbit/s tx speed) Thermal protection shutdown and thermal warning Stand-by mode current consumption < 600uA Short circuit detection and protection on bus output pins between bus wires Wake up from the bus 3.3V compatible TXD input Space environment (TID: up to 20Krad, SEE: 20MeV/mg/cm2 LET) AmCAN: General purpose MCU with CAN controller 16 bit 80C51 processor 16 I/Os 3 PWM/Timer Interrupt Controller Unit (ICU) and In Circuit Debugger (ICD) UART/LIN controller BIST controller for external and internal memory 2.0B CAN bus controller (16 TX/RX configurable mailboxes) Several redundancies rules in order to obtain SEU protection Auto-diagnostic logic Remote control and re-configuration 11

12 CANopen Controller IP Core CCIPC: Complete CAN node capable to handle both low level communication aspects and the higher level Object dictionary memory management aspects Bus manager with Bus redundancy features CAN interface (HurriCANe) Object Dictionary support HeartBeat protocol Synchronous time triggered and event driven real time communication TPDO/RPDO Long data stream transfers (SDO) Future Steps o o SUPPORT & MANTAINANCE: SITAEL can provide support and mantainance to CANopen users. A support contract is going to be signed with TAS for its Exomars subcontractors Any other users are welcome even directly. IMPROVEMENTS: Feedback from users are always welcome in order to improve the IP core on: Datapackage completness IP performances Additional services to be implemented Resources occupation 12

13 CAN Development Tools S9216 CANopen Development Module Powerful tool for CANopen node design, test, configuration and analysis, based on SITAEL CANopen Controller IP Core (CCIPC). CAN Bus CAN B CAN A SpW Links CAN trs RS485 can trsor ISO CCIPC SpW (optional) slv mst slv AHB FPGA ProASIC3E slv mst I/O PCI Power Regulation cpci I/F SRAM NOR FLASH 5V option 5V cpci Bus USB USB MAX3420 USB mst GPIO CCIPC Dev Board S9154 LEON2-FT Development Module Powerful tool for development, test and validation of hardware and software in the SPARC V8 Environment S9155 FPGA Development Module Large FPGA, large memory, several and redundant communication links for the most challenging developments. A1493 SpW/CAN Multibus Board Flexible FPGA based device that can house up to 2 CAN links, 2 MIL-STD-1553B connections and up to 4 SpaceWire ports depending on the version. Configurable to work inside a PC as a PCI peripheral board, or to be enclosed in an external USB case

14 Introducing CANbus in Equipment Integrated Payload Processing Module 100 MHz CPU (AT697F) 262 Mbyte memory 256 MB SDRAM (32x100 MHz) 4 MB FLASH 2 MB SRAM FLASH / SDRAM latch-up protection on board From 8 to 32 KB PROM on board SpaceWire router (8 links up to 200 Mbit/s) 2 CAN links with 16 Mail Boxes MIL-STD1553 Bus Controller/Remote Terminal PCI bus on board with mezzanine connector Single power supply (DC/DC converter on board) Selective subsystem bias off control Flexible, programmable and modular system, able to operate as a real single board compact computer suitable for supporting requirements coming from different mission scenarios. Designed for missions where several payloads share a common Data Processing Unit. CANbus for housekeeping as instrument bus (up to medium data rate) or avionic bus in alternative to MIL-STD

15 CAN for Electric Propulsion PPU The most advanced low power HET in the World Based on permanent magnets Low cost, high reliability Suits with most of the upcoming Constellations 2170 hours of 210 W (World record) Coupling test with SITAEL 300 W PPU successfully performed 150W PPU COTS-based very compact PPU designed to supply and control SITAEL HT100 Hall Effect thruster. The PPU fits inside two standard trays of SITAEL S-75 small satellite all-electric platform. CANbus is the baseline. 300W PPU PPU for a low power and low costs 300 W HETbased propulsion system for small satellites (< 300 kg). The PPU is suitable for SITAEL HT 100 Hall Effect Thruster with full redundant design. CANbus is an option.

16 ESA ESEO - Why CAN? ESEO is the third mission managed by the ESA s Education and Knowledge Management Office and builds upon the experience gained with SSETI Express (launched in 2005) and the YES2 tether and re-entry capsule experiment (launched in 2007). The ESEO Program is financed and technically supported by the ESA Education and Knowledge Management Office reporting to the Cabinet of the ESA Director General (DGC- DE) The program is educational, therefore the satellite is mainly developed by students preparing their Master or PhD thesis supported by ESA and SITAEL experts. The satellite is a low-cost 50kg platform, mostly based on COTS components. The CAN is selected for platform and payload bus. Why? Low cost. Low power. Widely used in terrestrial application, consolidated technology with wide spread know-how. Large availability of components, both integrated in microcontrollers or as independent controllers. Large availability of software support, including higher level stacks (CANopen) 16 16

17 ESA ESEO - CAN view of a microsatellite Two CAN busses: the platform and payload bus. The OBDH is the only node which is connected to both. Each bus is composed of a Main and a Redundant CAN connection. Redundancy is managed with a master based heartbeat algorithm

18 ESA ESEO - the COTS-based CAN I/F o Hardware I/F o The ESEO OBDH implements 4 CAN controllers: 2 controllers are dedicated to the Main and Redundant Platform Bus 2 controllers are dedicated to the Main and Redundant Payload Bus o The Platform bus controllers are integrated in the OBDH microcontroller, a Cortex-M4 based STM32F407. o o o The Payload bus controllers are two MCP2515. The transceivers are 4 Texas Instruments SN65HVD233 Bus speed set to 250 kbps (bus load simulated with CANoe to validate the settings) o Software I/F o On top of the CAN protocol ESEO implements the CANopen stack: Vector Gmbh CANopen software stack integrated in RTEMS PDOs used to deliver on-board TC, to acquire data from sensors and control actuators, to acquire data from payloads, to broadcast the on-board time, and to implemented FDIR services (PINGs). SDOs are used by the OBDH to collect HK data with a client/server relationship. Bus redundancy is managed with an Heartbeat policy, where the OBDH is the master for the payload bus, and the TMTC is the master for the platform bus

19 SITAEL Minisatellite Concept We CAN configure For SITAEL higher-class small satellite (namely S-200 mini-sat, up to 200 kg launch mass), the CANbus technology is present onboard, as one of possible data handling bus (with Spacewire, Mil- 1553b, RS422). Differently from micro-sat product (low cost, fully COTS-based, max 2y lifetime), for S-200 platform, which aims to provide high performances (up to 5y lifetime) and multi-purpose features (different missions/different P/Ls), it is fundamental to foresee a strong configurability in terms of subsystems and on-board equipments (and their I/F). An example of S-200 optional configurations, with different platform features (answering different missions/orbital/reliability needs): S-200 CONF. A (without CANbus) Institutional Missions (EO, Science) Hi-Reliability for single mini-sat (> 0.7) Lifetime up to 5 years All orbit scenarios (LEO, MEO), also in severe RADenv Space-grade (ECSS-C) subsystems/units C&C I/F: Mil- 1553, SpaceWire, RS-422 S-200 CONF. B (with CANbus) Low cost/ Commercial Missions (EO, TLC) Reliability figure negotiable, evaluated at system level Lifetime up to 3 years LEO (<500 km) constellations, less severe RADenv Also COTS-based subsystems/units (ECSS tailoring) C&C I/F: CANbus, 19 19

20 CAN Workshop We would welcome you! A wonderful location in the south of Italy SITAEL Headquarters are just 35 km far from Bari International Airport More than 100 seats conference room 20

21 Contacts Giovanni Tuccio Sales and Marketing Manager SITAEL S.p.A. Via San Sabino, Mola di Bari (BA) ITALY Tel: Fax: