1. Overview of Project Lydia Eatmon ACC2 Fall 2001

2. Project Adaptive Cruise Control Diver aid, part cruise control, part collision avoidance Motivation for project Reduce automotive collisions Facilitates …  Safer roads for all drivers  Lower insurance costs

3. Overview of Features Adjusts speed of car to achieve a safe distance of separation Helps to avoid collisions by braking when the safe distance can not be achieved Notifies the driver of impending collisions that the system can not prevent, but the driver might be able to

4. Domain Research Investigated area of automotive adaptive cruise control Needed to apply domain knowledge on topic of automotive embedded systems Project Constraints The radar has a range of 500 ft The car shall never come closer than 2 seconds of separation The brakes can be applied with a deceleration of 0-12 ft/sec/sec in intervals of 1 ft/sec/sec

5. More Constraints Project Constraints cont. The engine control module will accept a message to hold the car at a given speed The same module will also accept a resume message The accelerator can be overridden with speed control Resume driver determined speed

6. More Constraints Project Constraints cont. A signal is present if the cruise control is engaged The system must not activate/be active at speeds under 25 mph A signal must be present when the system is actively adjusting the speed