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Introduction to REMOTES: Reliable Modular Telescope Solution

Introduction to REMOTES: Reliable Modular Telescope Solution. Michal Jakubec et al. AI AS Czech Republic CTU FEE Prague. Agenda. Motivation & Objectives Module Architecture Software Support D50 Control Solution Future Evolution. Motivation of D50 Rework (AS-IS).

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Introduction to REMOTES: Reliable Modular Telescope Solution

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  1. Introduction to REMOTES:Reliable Modular Telescope Solution Michal Jakubec et al. AI AS Czech Republic CTU FEE Prague

  2. Agenda • Motivation & Objectives • Module Architecture • Software Support • D50 Control Solution • Future Evolution

  3. Motivation of D50 Rework (AS-IS) • Slow telescope drives( 0.8 deg/s) • No automatic failover processes • Operation completely based on PC control • No direct telescope position feedback

  4. Objectives of D50 Rework (TO-BE) • More powerful servo units( 20 deg/s) • Absolute position sensors on both axes ( 2.3 arcmin) • Incremental sensors with interpolation ( 1 arcsec) • Automatic failover mechanisms (telescope parking, closing of roof) It proves to be a really difficult challenge!

  5. Module as a Heart of Solution • Robust metal housingfor better durability and EMC • Peripheral board (optional) • Main board(mandatory) • Sockets,connectorsandcabling

  6. Main Board of the Module • Based on ATxmeta256A3 microcontroller(256 KB Flash, 16KB RAM) • Two 10 Mb/s Ethernet ports with PoE • Two RS-232/422 serial ports • 24 inputs/output for general use (GPIO) • JTAG for debugging Serial 1 JTAG Serial 2 GPIO GPIO Ethernet 1 Ethernet 2

  7. Designed for Reliability • Redundant Ethernet ports • Redundant power inlets (PoE) • Microcontroller battery backup • Continuous voltage monitoring • Power outage detection

  8. Ready for Maintenance • Small command set validfor all modules • Discoverable register setunique for each module • Complex commandsas user-defined macros • Commands independent on the type of comm. line • Universal management anddiagnosticapplication :> MOVE 12450 MOVE @0: SET TargetPosition = @0 SET Command = Slew WAITFOR State = Idle ASSERT CurrentPosition = Target Position END

  9. Universal ManagementApplication

  10. D50 Telescope Control Solution • Communication over redundant network • Directed by RTS2 control system over serial line • Mounting drivescontrol(hour angle,declination) • Site peripherals control(e.g. roofopen/close, weather detection)

  11. Members of the Project

  12. Future Evolution • Direct integration with imaging equipment(control of cameras, focusers, filter wheels) • Fowerful graphical software suite for complete observation control and monitoring • Support of TCP/IP protocol family • Physical network based on Fast Ethernet(100 Mb/s) • Choice of more powerful MCU platforms(ATxmegaA1, ARM, etc.)

  13. Conclusion • Motivation & Objectives • Module Architecture • Software Support • D50 Control Solution • Future Evolution Questions?

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