Time triggered customized scheduler for adaptive cruise control application in vehicle

Driver assistance system in most of the present vehicle was using preemptive scheduler based operating system for adaptive cruise control function. Highly predictable and at low cost system can be implemented using Time triggered cooperative scheduler, instead of a full RTOS, RTOS require more calculation time and large memory space which is not available in smaller embedded systems and is very complex and difficult to debug errors. One of the simplest methods is Time Triggered cooperative scheduler for controlling adaptive cruise control in vehicle and will be most reliable and predictable. The proposed system is TTC scheduler for Adaptive cruise control, is main control parts in driver assistant system. The controller is placed in host vehicle and minimum distance between host and front vehicle is maintained by using distance sensor for distance of front vehicle, speed sensor for getting speed of host vehicle and position sensor for getting the position of accelerator pedal. The controller vary the speed of the host vehicle so that to keep minimum distance. The system is simulated using keil IDE tool. The application tasks are scheduled by using efficient Time triggered cooperative scheduler. The scheduler is written in Embedded `c' and Hardware consists of ARM 7 based microcontroller LPC2148.