SDP 11 FPR Team Goeckel Group: Adebayo Adeyemi, Joseph Hayward, Mark Kohls, Simon McAuliffe Advisor:...

SDP 11 FPR Team Goeckel

Group: Adebayo Adeyemi, Joseph Hayward, Mark Kohls, Simon McAuliffe

Advisor:Dennis Goeckel

FPRKeeping The Secret

2SDP 11 FPR Team Goeckel

Brief Overview

Step 1: Send test signal to desired

radio.

Step 2: RX radio sends back reply signal. Friends measure this

signal strength.

Step 3: TX radio sends out

message. Friends not in range

transmit noise.


System Requirements

Battery life of at least 12 hours Receive and transmit Operate while walking Operate up to 300 meters.

• Receive signal with 95% success rate. Voice Transmission Bandwidth Maintain secure communications

• Less than 10% interception rate Handheld and less than 2lbs.


Software Requirements

RX Radio

RX Radio

RX Radio

TX Radio

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Radio Diagram

Transceiver

Antenna

Microphone

Speaker

Transmitter

Receiver

Microcontroller


Design Challenges

Noise• Appropriate Signal Threshold• Duration for transmission

Variable transmission strength Procuring reliable data Demonstrate functioning system

• Computer display of radio activity Consistent receiving and transmitting


Schematic


PCB


Testing

Conclusion difference of .1 volt B1 RSSI B2 RSSI

2.0 2.08

2.04 1.75

1.87 1.74

1.78 1.74

1.83 1.8

1.74 1.75

1.8 1.6


Simulation Data


How Data Was Found


How Data Was Found

Distance


How Data Was Found

Angle


How Data Was Found

If wall wallhit++


How Data Was Found

Power here is getPathloss


Radio Program Flow Chart


GUI Demonstration


Radio Demonstration


System Requirements

Battery life of at least 12 hours Receive and transmit Operate while walking Operate up to 300 meters.

• Receive signal with 95% success rate. Voice Transmission Bandwidth Maintain secure communications

• Less than 10% interception rate Handheld and less than 2lbs.


Questions?

SDP 11 FPR Team Goeckel Group: Adebayo Adeyemi, Joseph Hayward, Mark Kohls, Simon McAuliffe Advisor:...

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