T BAC Speaker Name Slide 1 Earl Grey and The Boston Tea Party Present The Entourage

T BAC Speaker Name Slide 2 Team Members  Casey Gold  Ellen Prommersberger  Nathan Winder  Steven Anderson  Tom Monikowski Ellen

T BAC Speaker Name Slide 3 Purpose  Ease tedium of stop-and- go traffic  Improve safety of rush hour driving Ellen

T BAC Speaker Name Slide 4 Objectives  Use sensors to determine position of car relative to other vehicles  Control acceleration and breaking based on distance away from leading vehicle  Control steering to follow lead car  Demonstrate concept on RC vehicle Ellen

T BAC Speaker Name Slide 5 Concept Ellen

T BAC Speaker Name Slide 6 Turning the Car Ellen

T BAC Speaker Name Slide 7 System Overview Casey

T BAC Speaker Name Slide 8 System Architecture Casey

T BAC Speaker Name Slide 9 M68HC11E Microcontroller  Availability  Features Built in RAM and ROM Serial communications interface (SCI) Synchronous serial peripheral interface (SPI) 8-channel, 8-bit analog- to-digital (A/D) converter Plenty of I/O Casey

T BAC Speaker Name Slide 10 Sensors  Ultrasonic  Range: 1’ 10”– 50’  Accuracy: 99.5%  Beam width: 5° Tom

T BAC Speaker Name Slide 11 RC Car Interface  Steering Incremental adjustment system D/A circuitry  Speed Control Maintain following distance relative to speed Constantly monitor speed of vehicle  Manual Override Disengages with driver input ENGAGE/DISENGAGE button Tom

T BAC Speaker Name Slide 12 User Warning Output  Status light on electronics box Green LED  Status light on RC car Blue LED  Warning light on RC car Yellow LED  Audio warning on RC car Audio circuit Amplifier Tom

T BAC Speaker Name Slide 13 Software  Accept values from sensors Interpret as distances or hits/misses  Conditionally determine the course of action Speed and turning  Handle user warnings Tom

T BAC Speaker Name Slide 14 Power System  Battery power Sensors System RC car  Choppers Step up/Step down Ensure proper voltages and currents Steve

T BAC Speaker Name Slide 15 Schedule Steve

T BAC Speaker Name Slide 16 Division of Labor  Casey – FPGA/Processor Setup, Programming  Ellen – Controls, Sensors, Quality Control  Nathan – Controls, Sensors, Construction  Steven – Power, Construction, Circuit Design  Tom – Math, Power, Programming Steve

T BAC Speaker Name Slide 17 Risks and Contingency Plan RISKS  Sensors May not work as anticipated  Steering  RC car operation  Reaction speed Signal processing Software/Hardware interaction CONTINGENCY PLAN  Sensors Add focusing beam deflector  Steering Manual override of steering in difficult situations  RC car operation Modify car  Reaction speed Use fewer sensors More efficient code Nathan

T BAC Speaker Name Slide 18 Materials  RC Escalades (2)  CPU  FPGA  Ultrasonic Sensors (7)  RAM  Flash ROM  Prototyping materials  Battery Nathan

T BAC Speaker Name Slide 19 Possible Additions  Extra sensors  Programming for highway driving (higher speeds)  More accurate sensing for nonstandard vehicles  NOS Wet or dry shot?  Five 10” LCD screens  Streetglow Blue Blinking? Nathan