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FPR Keeping The Secret . Group: Adebayo Adeyemi, Joseph Hayward, Mark Kohls, Simon McAuliffe Advisor: Dennis Goeckel. Brief Overview . Step 1 : Send test signal to desired radio. Step 2 : RX radio sends back reply signal. Friends measure this signal strength. - PowerPoint PPT Presentation
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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.
3SDP 11 FPR Team Goeckel
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.
4SDP 11 FPR Team Goeckel
Software Requirements
RX Radio
RX Radio
RX Radio
TX Radio
5SDP 11 FPR Team Goeckel
Radio DiagramTransceiver
Antenna
Microphone
Speaker
Transmitter
Receiver
Microcontroller
6SDP 11 FPR Team Goeckel
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
7SDP 11 FPR Team Goeckel
Schematic
8SDP 11 FPR Team Goeckel
PCB
9SDP 11 FPR Team Goeckel
TestingConclusion 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
10SDP 11 FPR Team Goeckel
Simulation Data
11SDP 11 FPR Team Goeckel
How Data Was Found
12SDP 11 FPR Team Goeckel
How Data Was Found
Distance
13SDP 11 FPR Team Goeckel
How Data Was Found
Angle
14SDP 11 FPR Team Goeckel
How Data Was Found
If wall wallhit++
15SDP 11 FPR Team Goeckel
How Data Was Found
If wall wallhit++
16SDP 11 FPR Team Goeckel
How Data Was Found
Power here is getPathloss
17SDP 11 FPR Team Goeckel
Radio Program Flow Chart
18SDP 11 FPR Team Goeckel
GUI Demonstration
19SDP 11 FPR Team Goeckel
Radio Demonstration
20SDP 11 FPR Team Goeckel
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.
21SDP 11 FPR Team Goeckel
Questions?