Exit Presentation

Exit Presentation Evan Laske EV2 Summer 2010 Evan Laske – Exit Presentation – Summer 2010

Outline • Background • Light Paper • HDU (Habitat Development Unit) • WSN (Wireless Sensor Network) • Experience Gained • Outside Work • Future Evan Laske – Exit Presentation – Summer 2010

Background • Home: Troy, MI Evan Laske – Exit Presentation – Summer 2010

FIRST & Team 910 • Programming Captain • Teaching / Mentoring • New Robotics Curriculum Evan Laske – Exit Presentation – Summer 2010

Campus (In Theory) Houghton, MI Canada In Reality… Evan Laske – Exit Presentation – Summer 2010

Double Major:Computer Eng./ Electrical Eng. (Dec. 2012) • Ultimate Frisbee • Broomball • BonzAI Brawl • Aerospace Enterprise Evan Laske – Exit Presentation – Summer 2010

First Tour – DX4 (Fall 09) • Regen-ECLSS Failure Case Book • IVA Umbilical Summary Sheets • WHC Electrical Schematics • Crew/Flight Controller Lessons • Console OJTing (Sims, Flights, Increment) • Node 1 Heritage Panel • RCC Scanning (KX) • Co-op Achievement Award Evan Laske – Exit Presentation – Summer 2010

Light Paper • Process for printing LEDs on flexible mediums • LED strings can be aligned, but polarities of strings inconsistent • Want to fly on ISS • Power supply needed to light entire panel Evan Laske – Exit Presentation – Summer 2010

Design • +18V Vcc • +/-18V @ 120Hz Vout • Polarity Protection • Voltage Regulator • 555 Timer (Astable) • Switching MOSFETs in H-bridge configuration • Paper not here until September • Will be flight design Evan Laske – Exit Presentation – Summer 2010

First Days Here…Troubleshooting • 3U CompactPCI Card with transition module. • 6U chassis with mechanical adapters • Pinout difference between 32-bit and 64-bit CompactPCI • Needed 1U chassis capable of 3U CompactPCI Evan Laske – Exit Presentation – Summer 2010

HDU(Habitat Development Unit) • Fully autonomous habitation systems that enable human exploration of space. • Contributions: • Troubleshooting • Avionics Racks • Troubleshooting • Wireless Sensor Nodes • Troubleshooting Evan Laske – Exit Presentation – Summer 2010

Avionics Rack • 2x Data Acquisition • Main module • Expansion Module • 1x VOIP Gateway • (Voice Over IP) • 1x NAT Switch • (Network Address Translation) • 1x WSN Manager • (Wireless Sensor Network) • 1x 12->48 V DC-DC Converter • 2x DECT Base Stations • (Digital Enhanced Cordless Telecommunications) Evan Laske – Exit Presentation – Summer 2010

Single 1U Rack • Designed mounting brackets, etc. (Pro-E) • Worked with technician to do the final wiring. DAQ Modules WSN Gateway VOIP Gateway NAT Switch DECT Modules (stacked) DC-DC Converter Evan Laske – Exit Presentation – Summer 2010

Troubleshooting • Antenna Grounding • DECT power supply • Required floating ground • Used original power supply to power both • VOIP Module Power • Working intermittently • Blown component on board • Loose power connector • Replaced with original • Replaced blown component Evan Laske – Exit Presentation – Summer 2010

WSN(Wireless Sensor Network) • EV4 Project with EV2 Support • EV4: Wireless Mesh Network • EV2: Instrumentation, etc. Schematic/Board Design • Features • Wireless • Small footprint • Versatile DAQ system • Guaranteed data delivery • Low power (<5mA Tx) • Applications • Habitat Demonstration Unit (HDU) • EVA suit (LEGACI) • Project M • Lunar Electric Rover Evan Laske – Exit Presentation – Summer 2010

Accel. Sensor Board • Created sensor board • Based on charge-amp circuit developed by Scott Hafermalz (EV4) • Any piezoelectric device • Connectors… • Board Design • Christy Herring • Rick Norman Evan Laske – Exit Presentation – Summer 2010

Auto X-talk Testing • Manual Testing: • Signal generator in, grounded all other channels (jumpers) • UART output through amplifier to invert, etc. • Jury-rigged RS-232 connector • Solution: • One board on top of stack • On-board RS-232 level shifter • Single input, multiplexed to correct channel • Other channels grounded • Interface with NI DAQ-Card • Status: Design complete, not fabricated Evan Laske – Exit Presentation – Summer 2010

Interface Board • UART -> RS-232 • USB Host/Peripheral Controller • SPI Interface • Firmware and/or Drivers • USB “Data Link” • SPI -> High-speed UART • High-speed UART -> USB • FTDI includes free drivers for chip • Allows faster transfers than UART->USB interfaces • Status: Layout in-progress Evan Laske – Exit Presentation – Summer 2010

LEGACI • EVA suit development (EC3) • Metabolic & consumable data collection and calculation • WSN to control valve / collect sensor data • Un-tethered testing. • LEGACI = Lunar/Mars Exploration Guidance Algorithm and Consumables Interrogator Evan Laske – Exit Presentation – Summer 2010

Serial API • Start with LEGACI development • Create a full API to handle all low-level ops • Interrupt driven & message-send protocols • Interface with printf() • Room for expansion to SPI and I2C Evan Laske – Exit Presentation – Summer 2010

Final Days…Troubleshooting • Consistently dropped connections to manager • Antenna grounded incorrectly:Chassis to Instrumentation • Losing channel data • Amplifiers shorting Vcc to GND • Replaced amplifiers • WSN 28V line noise • cRIO controls power through relays • Before relays: good power • After relays : +/- 25V swings at ~15kHz • Bug in software • Some channels still not working • Amplifiers stressed that didn’t fail completely • Some nominal impedances were reliable showing good/bad/stressed amplifiers. Evan Laske – Exit Presentation – Summer 2010

Experience Gained • OrCAD Simulation • Altium • Subversion • PCB Design Intricacies • Pro-E • Code-Composer • Firmware Development • More intuitive feel for electronics • Troubleshooting • Troubleshooting • Troubleshooting • Troubleshooting • Troubleshooting • Troubleshooting • Troubleshooting • Troubleshooting Evan Laske – Exit Presentation – Summer 2010

Tours & Lectures • Ed Van Cise • ArcJet (B222) • Ad Astra • Aramadillo Aerospace Evan Laske – Exit Presentation – Summer 2010

Companion Computers • Started in High School • Services: • Computer Repair / Upgrade • Networking • Website Design / Hosting • Course Scheduler • Android Development Evan Laske – Exit Presentation – Summer 2010

Where Next • 2010 • Fall: MTU • 2011 • Spring: ER4 • Summer: ER4? • Study Abroad? • Fall: MTU • 2012 • Spring: MTU • Summer: ??? • Fall: MTU • GRADUATION! • After Graduation • Graduate School? • Co-op • Full-Time? Evan Laske – Exit Presentation – Summer 2010

Acknowledgements • Susan Morgan • Paul Delaune • Greg Hall • David Eslinger • Ray Wagner • Scott Hafermalz • Rick Barton • Christy Herring • Rick Norman • Keith Grimm • Rest of EV Evan Laske – Exit Presentation – Summer 2010

Questions? Evan Laske – Exit Presentation – Summer 2010

Backup • HDU FY11 Planning Excerpts (3) • Light Paper Power Supply Circuit (1) • Charge-Amp Circuit (1) • Accelerometer Board Circuit (1) • X-Talk Circuit (1) • X-Talk Switching (1) • Interface Board Circuit (1) Evan Laske – Exit Presentation – Summer 2010

Exploration Habitation A Sustainable Flexible Path • Lunar Missions • lunar orbit, lunar surface • Landing systems • Nuclear power • In-situ resource utilization • Surface Habitation • Autonomous Hab Operations • Surface Electric Rover • Surface EVA mobility • Deep Space (NEO) • Crew support for 360 days (habitat) • Radiation protection (habitat) • Closed-loop life support (habitat) • Deep space propulsion • Cryogenic fluid management • Supportability & maintenance • Autonomous Hab Operations • Earth Analogs • Crew support for 28 - 70 days • Operations Concept Validation • Science & Mission Ops • Autonomous Hab Operations • Hardware/Software Demos • Closed-loop life support • Inflatable Hab Demos • Environmental monitoring • Supportability & Maintenance • Mars Missions Lunar missions (3) plus: • Mars entry & landing systems • Advanced propulsion • Partial-gravity countermeasures Self-Sustaining Habitats • Near-Earth Space lunar orbit, Libration Points • Heavy lift launch • Autonomous Hab Operations • Inflatable Hab Module • Closed-loop life support • Crew support for 20 days • Deep-space propulsion • Radiation protection • Low-Earth Orbit International Space Station • Zero-g research platform • Autonomous Hab Operations • Inflatable Hab Module • Closed-loop life support • Environmental monitoring • Supportability & Maintenance concepts DRAFT – Pre-decisional

Habitat Demonstration Unit Project Vision: • Develop fully autonomous habitation systems that enable human exploration of space. • Develop, integrate, test, and evaluate Habitation Systems that will be utilized as technology pull / testbed and to advance NASA’s understanding of alternative mission architectures, requirements, and operations concepts definition and validation. Mission: • The Habitat Demonstration Unit – Pressurized Excursion Module Configuration will “roll-out” ready to for remote testing on July 1st 2010. LEO Space Habitation Testbed In-Space Transit Habitation • Top-Level Milestones • 2010: 1st Gen HDU1 Excursion Module Demo • 7/2010 HDU1 “Roll-Out”, Rock-yard Dry Run • 8/2010 – 9/2010 Desert RATS Field Analog Test • 2011: 1st Gen HDU1 Core Module Demo • 8/2011 – 9/2011 Desert RATS Field Analog Test • 2012: 2nd Gen HDU2 Module Demo w/ 1st Gen HDU • 8/2012 – 9/2012 Desert RATS Field Analog Test • 2013: 2nd Gen HDU2 Module Demo w/ 1st Gen HDU • 8/2013 – 9/2013 Desert RATS Field Analog Test Planetary Habitation

From PowerPoint to Demo Unit Habitat Demonstration Unit April 2010 June 2009

Light Paper Power Supply Evan Laske – Exit Presentation – Summer 2010

Charge-Amp Circuit Evan Laske – Exit Presentation – Summer 2010

Accel. Board Circuit Evan Laske – Exit Presentation – Summer 2010

X-Talk Circuit Evan Laske – Exit Presentation – Summer 2010

X-Talk Switching Evan Laske – Exit Presentation – Summer 2010

Interface Board Circuit Evan Laske – Exit Presentation – Summer 2010

Exit Presentation