Implementation of Light Detection and Ranging in Vehicle Braking System

Driving safety is very important as the number of vehicles on the road increases. The development of a driving safety system is currently being carried out by motor vehicle manufacturers, especially for cars. Light Detection and Ranging (LiDAR) is a reliable distance sensing method to be applied as a sensor in vehicle safety systems due to its high measurement accuracy. In this study, a vehicle braking system has been designed by implementing LiDAR to detect obstacles in front of the vehicle. LiDAR data is processed to obtain relative velocity which is used as input to the control system for braking assistance when the vehicle encounters an obstacle. In the braking control system, a proportional-integral-derivative (PID) method is applied. The experimental results show that the distance scanning by LiDAR with an angle range of 30° has an average error of 1.40%. The braking system which is equipped with the full-stop assist feature has succeeded in avoiding the vehicle from colliding with an obstacle.