Adaptive Cruise Control System ENGR 340 April 13, 2007

 Introduction of Project  The Big Picture – Design Norms  System Requirements  System Design  Testing  Questions

Nate Sportel Erik Barton Bryan Bandstra Chris Vonk Nate Barker

 Detects the distance and speed of forward vehicles  Changes the cruise speed of the equipped vehicle  Information display and push button interface Design an Adaptive Cruise Control System

Transparency  Easy to use  Small learning curve  Minimal attention required from user during operation  Robust and reliable  Functions reliably and accurately in varied weather and temperature conditions

Stewardship  Increased fuel economy  Improve on existing cruise control systems  Reduce sharp acceleration and deceleration

Detection  The system shall detect vehicle(s) ahead of ACC equipped vehicle

Operation  The user shall be able to independently engage the ACC system  The vehicle shall operate at the user defined speed when no impeding vehicles ahead are detected  The system will slow down the vehicle if an impeding vehicle is detected

Reverse engineer speed signals via NeoVi and J1850 Vehicle Bus  Testing methods: stop watch, Vehicle Spy, test plans  Tested for: Cruise On/Off, Speed Signals, Cancel/Resume, Coast/Accel  Data Recorded in Excel  Used a Filter to narrow experimental search  Found HEX value 0x10 to be speed  Confirmed afterward by documentation from JCI