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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.
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FPRKeeping 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. 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 TX Radio RX Radio RX Radio
Radio Diagram Transceiver Microphone Transmitter Antenna Microcontroller Receiver Speaker
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
Testing • Conclusion difference of .1 volt
How Data Was Found Distance
How Data Was Found Angle
How Data Was Found If wall wallhit++
How Data Was Found If wall wallhit++
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.