Development of rear-end collision avoidance in automobiles
ACKNOWLEDGMENTS I would like to thank my major professor Sabri Tosunoglu for his advice, support and guidance during my years at FlU. I feel privileged to have earned my two years of degrees under his tutelage. Next, I would like to mention how lucky I feel for having been part of the Robotics and Automation Laboratory. Not only was the research conducted in this lab exciting and challenging, but the members of the lab have made my stay very enjoyable. To all I would like to thank for having to
... thank for having to put up with me for so long. To those who were in the lab when I came in: Ray Reyes, Miguel Espina, Pat Batsomboon and Haritha Adumillli. I would like to thank for their guidance and support. I would to thank my friends Samata Chari and Bangalore Guru for their support and guidance in my Java simulation program. I am grateful to my friends Madhusudan Reddy, Prashant Jawalikar, Prachi Jawalikar, Bharath Vembu who have in some way contributed to the success of this work. At last but not least, I would like to thank my parents for their love and for having believed in me even when I didn't. The goal of this work is to develop a Rear-End Collision Avoidance System for automobiles. In order to develop the Rear-end Collision Avoidance System, it is stated that the most important difference from the old practice is the fact that new design approach attempts to completely avoid collision instead of minimizing the damage by over-designing cars. Rear-end collisions are the third highest cause of multiple vehicle fatalities in the U.S. Their cause seems to be a result of poor driver awareness and communication. For example, car brake lights illuminate exactly the same whether the car is slowing, stopping or the driver is simply resting his foot on the pedal. In the development of Rear-End Collision Avoidance System (RECAS), a thorough review of hardware, software, driver/human factors, and current rear-end collision avoidance systems are included. Key sensor technologies are identified and reviewed in an attempt to ease the design effort. The characteristics and capabilites of alternative and emerging sensor technologies are also described and their performance compared. In designing a RECAS the first component is to monitor the distance and speed of the car ahead. If an unsafe condition is detected a warning is v issued and the vehicle is decelerated (if necessary). The second component in the design effort utilizes the illumination of independent segments of brake lights corresponding to the stopping condition of the car. This communicates the stopping intensity to the following driver. The RECAS is designed the using the LabVIEW software. The simulation is designed to meet several criteria: System warnings should result in a minimum load on driver attention, and the system should also perform well in a variety of driving conditions. In order to illustrate and test the proposed RECAS methods, a Java program has been developed. This simulation animates a multi-car, multi-lane highway environment where car speeds are assigned randomly, and the proposed RECAS approaches demonstrate rear-end collision avoidance successfully. The Java simulation is an applet, which is easily accessible through the World Wide Web and also can be tested for different angles of the sensor. vi 42 3.8.