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P11016: Intra-building Navigation

P11016: Intra-building Navigation. Shannon Carswell Dan Paris Tim Garvin Dan Stanley. Outline. Architecture and Process Diagrams Bill Of Materials Component Details Interfaces Software Information Electrical Information Test Plan Risk Assessment Feasibility Analysis.

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P11016: Intra-building Navigation

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  1. P11016: Intra-building Navigation Shannon Carswell Dan Paris Tim Garvin Dan Stanley

  2. Outline • Architecture and Process Diagrams • Bill Of Materials • Component Details • Interfaces • Software Information • Electrical Information • Test Plan • Risk Assessment • Feasibility Analysis

  3. Hand Held Device RFID Reader RFID TAG Compass Direction Tag Number Power Supply Microcontroller I/O INTERFACE (Computer) Architecture Diagram

  4. Process Diagram Get Target Destination (UI) Translate to Location UUID Tell User We’ve Arrived (UI) UI Input Tag UUID# Yes There yet? Tag UUID# Get current Location Find Next Waypoint No Build Map Give Directions (UI) Map Manual Data Entry

  5. Bill of Materials

  6. RFID Reader SkyeTek M9 Module (MH) • Frequency: 862-955MHz • Size: 70x53x9 (mm) • Weight: 12.5g • Read Range: 3.5m • Supply Voltage: 4.5-5.5V • Price: $274.00 • Tag Compatibility: EPC Gen1 & EPC Gen2

  7. RFID Tags • ALN-9654 “G” Inlay • Size: 3.8”x0.9” • ALN-9634 “2x2” Inlay • Size: 1.76”x1.76” • ALN-9662 “Short” Inlay • Size: 2.76”x0.67” • ALN-9640 “Squiggle” Inlay • Size: 3.73”x0.32” • ALN-9630 “Squiglette” Inlay • Size: 2.76”x0.37”

  8. RFID Antenna ANT-VDP-DB1-RPS • Frequency: 824-960MHz • VSWR: <1.5 • Impedance: 50 ohms • Connector: SMA • Polarization: Linear • Size: 4”x0.8”x0.18” • Cost: Free

  9. RFID Component Connection

  10. Dev Board:Explorer 18 Maximum Flexibility Debugging Support Too large to strap to arm. Enables confidence in later PCB Comes with Superset representative of the PIC18 family. Microcontroller

  11. Microcontroller Interfaces Compass RFID Reader I2C PIC18F8722 Microcontroller GPIO & PWM Keypad Tactile Response Etc.

  12. Microcontroller:PIC18F8722 “Head of the Family” 5 PWM Outputs I2C Aggressively Low Power Supports 5V Rail, down to 2V Microcontroller Pin-out

  13. Compass Freescale – MAG3110 3 Axis Magnetometer Low Power Draw 24uA at 0.95-3.6V Popular Consumer Electronics I2C Compatible Interface Miniature Size 2x2x0.8mm Maximum Measurement Frequency of 400Hz

  14. Microcontroller and Compass Interface Both MC & Compass Support the Popular I2C Interface I2C Interface 2 Wire Interface for Low Speed Consumer Electronics Commonly Used to Attach Peripherals Components to Motherboard Ideal for the Low Speed ADC on the MAG3110 Chip

  15. Navigation A B C • ‘Hybrid’ Algorithm • Graph Traversal • Area Navigation • Terminology • Tag • Area • Waypoint

  16. Navigation A B C • ‘Hybrid’ Algorithm • Graph Traversal • Area Navigation • Terminology • Tag • Area • Waypoint

  17. Power Supply Circuitry

  18. Power Supply Simulation V1: 4.986 V V2: 2.498V

  19. Electrical Circuit for Compass

  20. Objective: Verify communication between all components in RFID System Reader vs. Antenna Reader vs. Tags Read Range vs. Tags Reader vs. Micro Compass vs. Micro Power supply vs. RFID system Computer vs. Micro Test Plan

  21. Risk Assessment Changes

  22. Feasibility Analysis Dead Zone Solution

  23. Future Plans • MSD I • RFID Testing/ Feasibility Analysis • Read RFID Tag UID • Figure Out Wiring • PCB/Vector Board Considerations

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