1. Jeff Burch Simon Dakermanjian Mazen Arakji Jonah Kadish Derek Smith
R. A. H. M.
Jeff Burch
Simon Dakermanjian
Mazen Arakji
Jonah Kadish
Derek Smith

2. R. A. H. M. Brief Overview Real Time Athlete
ECK measures electrical activity of the heart
3 electrodes
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3. ECG Data

4. R. A. H. M. Circuit Diagram Real Time Athlete Block One Block Five
Block three
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Block Four
Block two
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5. R. A. H. M. Block One Real Time Athlete Differential Amplifier
Takes three inputs
Has a gain adjustment
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6. R. A. H. M. Block Two Real Time Athlete High pass filter
Tried to filter motion artifact
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7. R. A. H. M. Block Three Real Time Athlete First LPF Gain is 1
Cuttoff is 20 Hz
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8. R. A. H. M. Block Four Real Time Athlete Second LPF Gain is 2
Cuttoff is the same as the first LPF
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9. Block Five
Gain Block of 2

10. Complete Circuit

11. Power Issues Oscilator 5 V Micricontroller 3.6 V Transmitter 9 V
ECG circuit /- 9V
Transformer

12. R. A. H. M. Microcontroller 16 bit RISC processor 22 I/O pins
10 bit, 200ksps ADC
4kB program memory
256B RAM
USART included
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13. Microcontroller Architecture
R. A. H. M.
Microcontroller Architecture
51 instructions, 7 addressing modes
16 registers, 12 general use
6 software configurable power modes
Interrupt-driven I/O, ADC, UART
Linearly Addressed RAM, Program Memory, and Interrupt Vectors
Requires external oscillator for stability/ADC
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14. Microcontroller Layout
R. A. H. M.
Microcontroller Layout
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15. Microcontroller Interface
R. A. H. M.
Microcontroller Interface
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16. R. A. H. M.
Microcontroller/RF
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17. 9XStream™ 900 MHz Wireless OEM Module
R. A. H. M.
9XStream™ 900 MHz Wireless OEM Module
Long Range
-110 dBm receiver sensitivity (industry avg. only -93 dBm)
Up to 1500 ft. (450 m) indoor/urban (900 MHz)
Up to 7 mi. (11 km) line-of-sight w/ dipole
Up to 20 mi. (32 km) line-of-sight w/ high gain
Low Power
150 mA transmit / 50 mA receive current
Power down current to <26 µA
Very Robust and Sophisticated
Numerous Communication Options (UART)
Well Priced
Around $200.00
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18. Communication Details
R. A. H. M.
Communication Details
Perfect Match to Our Requirements
Stops Us from “Reinventing the Wheel”
Easily Configured
Set up for Scalability
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19. R. A. H. M.
Data Packet Details
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20. Transceiver Configuration
R. A. H. M.
Transceiver Configuration
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21. R. A. H. M.
Data Filtering
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22. R. A. H. M.
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23. R. A. H. M.
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24. Base Station Interface
R. A. H. M.
Base Station Interface
Two Options
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Standard Pins and VCC CMOS Levels and SCI Interface Capabilities of the HC11
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25. R. A. H. M. BASE STATION Current Status Future Objectives
Operating Parts
Tests Performed
Parts Listing
Future Objectives
Parts to be Added/Replaced
Tests to be Performed
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26. R. A. H. M.
Current Board
                                                                       
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27. R. A. H. M.
schematic
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28. R. A. H. M. Buffers and Latch Buffer Latch Real Time Athlete
Safeguard for transfer of bit values
Latch
Maintains correct functionality between low order address bits and data bits.
Also acts as a buffer
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29. R. A. H. M. EPROM Real Time Athlete 32Kx8 EPROM
Chip Select Connected to ground
Pin A15 not terminated
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30. Safety Tests Completed
R. A. H. M.
Safety Tests Completed
Diode Bridge
Incase opposite polarity is applied
Noise Tests
Before Power Bus
At System Power of HC11(84mV)
Individual Chips
                                                                       
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31. R. A. H. M. Parts Listing Current Components Future Components
MC68HC11
EPROM
BUFFERS/LATCHES
5V REGULATOR
RESET SWITCH
Future Components
Xilinx FPGA
SRAM
Bi-directional Transceiver
LCD
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32. R. A. H. M. LCD Real Time Athlete 20x4 Basic Control Pins
R/W
0 = Write, 1 = Read E
Enable pin of processor RS
Register Select (0 = Instruction Register, 1 = Data Register)
D0-D7
Data Pins
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33. Costs Current Costs Future Costs Micro Controller (donated)
Harness: $30
3 Transceivers, with 2 RS232 interface: $230
Future Costs
LCD: $40

34. R. A. H. M. Upcoming Plans/Tests Real Time Athlete
Test if HC11 can fetch and execute instructions (NO OP NO OP NO OP JMP).
Implement Xilinx FPGA. Run same basic code.
Introduce SRAM and use Xilinx for Chip Select. Run same basic code.
Begin writing useful code.
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35. Basic Chip Select Circuit
R. A. H. M.
Basic Chip Select Circuit
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36. R. A. H. M. Memory Mapping Real Time Athlete
Using Pins A15, A14 and A13 for Chip Select
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37. R. A. H. M.
schedual
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38. R. A. H. M. Future Plans Milestone I Milestone II Real Time Athlete
Transmitter sends accurate ECG data
Writing useful code to process data
Milestone II
Outputting heart rate to LCD
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39. R. A. H. M. Division of Labor Derek & Jeff
Sensing, digitalizing, and transmitting data
Jonah
RF Communication
Help to link both sides
Simon & Mazen
Receive, Process, and Output data
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