“the locator” r. f. location system mike gould kara mcmillin marcus pearlman chris sinkey jacob...
Post on 19-Dec-2015
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“THE LOCATOR”R. F. LOCATION SYSTEM
MIKE GOULD KARA MCMILLIN MARCUS PEARLMAN
CHRIS SINKEY JACOB WILTGEN
TEAM ZISSOU presents….
Power
Rectifier
Amplifier
68HC11
Microcontroller
USB Interface
Receiving Antennas
TransmittingAntenna
R.F. Location Project General Design
• Transmitting Antenna sends power signals
• Antenna arrays receive power signal
• Power is rectified and amplified
• DC power signal is analyzed
• 2-D Location outputs to Computer, LCD, or PDA
• Bill Murray still confused.
Project ObjectivesProject Objectives
Optimal ObjectiveOptimal Objective Create a fully functional 2D location Create a fully functional 2D location
systemsystem
Baseline ObjectiveBaseline Objective Directional finding antennaDirectional finding antenna
Chip Layout
68HC11
RAM ROM
DATA BUS
Receiver Output
ROM:•Software Storage
RAM:•Temporary Receiver Variables
HC11:•Controls Antenna Array Switching•Interfaces with PC via USB•HC11 will read from external memory.
FPGA10
Control lines toAntenna Array
Software Extrapolate data from USB interface
Program computer workstation to locate transmitter using C Receives a bit pattern from each
receiving unit, Translates into a vector Interprets vector into a graphical location
Software continued
Output data to screen
Interpret data to find a direction within a given boundary
Plot directions point for point on Cartesian coordinate 2-D plane
Software Controlled Software Controlled HardwareHardware
1 Antenna Array1 Antenna Array
68HC11 Microcontroller68HC11 Microcontroller► Includes A/D converter, timersIncludes A/D converter, timers
USB interface between 68HC11 and computer USB interface between 68HC11 and computer workstationworkstation
10-12 circularly polarized antennas10-12 circularly polarized antennas FPGA chipFPGA chip
► ROMROM► RAMRAM
Hardware Antenna Design Details
Transmitting Antenna Design Monopole design, linearly polarized.
Receiving Antenna Arrays Circularly polarized, electrically scanning Signal Processed by 68HC11 Microcontroller
Includes A/D converter
Array Schematic not yet finished
Schedule
Division of LaborDivision of Labor
►Chris, Marcus, MikeChris, Marcus, Mike Design and construction of transmitter, Design and construction of transmitter,
antenna arrayantenna array
►Kara, JakeKara, Jake Software for receiver switching, vector Software for receiver switching, vector
interpretation, visual output, interfacing interpretation, visual output, interfacing between receiver and PC, and between receiver and PC, and differentiating between I.D. tags.differentiating between I.D. tags.
Feasibility
4 Microprocessors 68HC11 4 FPGA’s - 4 @ $100 (if used) 4 32 K RAM - 4 @ $5 4 32 K ROM - 4 @ $5 4 FR4 boards - 4 @ $5 USB cables - 120 ft. ~ $40
Market AnalysisMarket Analysis
Possible UsesPossible Uses• Warehouse Inventory ManagementWarehouse Inventory Management• Small BusinessesSmall Businesses• HomeHome
Tracking personal objectsTracking personal objects Tracking animals (dogs, cats, hamsters)Tracking animals (dogs, cats, hamsters)
• Monitoring hospital patient locationsMonitoring hospital patient locations
Project Risks
Parasitic foreign disturbances Other electronic devices may disturb antennas
Time management No benchmark so may take longer than expected
Additional Functionality
Specific ID Tracking multiple tags
Determining location of objects in 3-D
Finding Shamu
Questions?Questions?
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