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P11016: Intra-building Navigation Shannon Carswell Dan Paris Tim Garvin Dan Stanley
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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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Architecture Diagram RFID Reader RFID TAG Microcontroller Tag Number INTERFACE (Computer) Compass Direction I/O Power Supply Hand Held Device
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Process Diagram Map Find Next Waypoint Get current Location Get Target Destination (UI) Translate to Location UUID Build Map There yet? Tell User We’ve Arrived (UI) Give Directions (UI) Manual Data Entry UI Input Tag UUID# Yes No
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Bill of Materials
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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
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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-9630 “Squiglette” Inlay Size: 2.76”x0.37” ALN-9640 “Squiggle” Inlay Size: 3.73”x0.32”
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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
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RFID Component Connection
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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
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PIC18F8722 Microcontroller CompassRFID Reader Keypad Tactile Response Etc. I2CI2C GPIO & PWM Microcontroller Interfaces
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Microcontroller: PIC18F8722 “Head of the Family” 5 PWM Outputs I 2 C Aggressively Low Power Supports 5V Rail, down to 2V Microcontroller Pin-out
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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
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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
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Navigation ‘Hybrid’ Algorithm –Graph Traversal –Area Navigation Terminology –Tag –Area –Waypoint B A C
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Navigation ‘Hybrid’ Algorithm –Graph Traversal –Area Navigation Terminology –Tag –Area –Waypoint B A C
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Power Supply Circuitry
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Power Supply Simulation V1: 4.986 V V2: 2.498V
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Electrical Circuit for Compass
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Test Plan 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
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Risk Assessment Changes
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Feasibility Analysis Dead Zone Solution
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Future Plans MSD I –RFID Testing/ Feasibility Analysis –Read RFID Tag UID –Figure Out Wiring –PCB/Vector Board Considerations
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