Collision prevention apparatus and collision preventing method

Abstract

Disclosed is an apparatus for preventing a collision. The apparatus includes: a detection unit configured to detect another vehicle located at a rear side of both lateral sides through a detection sensor including one or more radar sensors disposed at a rear side of a driver's vehicle to monitor the rear side of both lateral sides and one or more ultrasonic sensors disposed at the rear side of the driver's vehicle to monitor the rear side of both lateral sides; a determination unit configured to determine a movement direction of the other vehicle based on the location, select the other vehicle that moves in one direction including a transverse direction from the driver's vehicle as a target vehicle, and determine whether the target vehicle approaches or moves away from the driver's vehicle by tracking a driving trace of the target vehicle; and a controller configured to, when it is determined that the target vehicle approaches the driver's vehicle, select a fusion target vehicle based on track information of the other vehicle by output values of the radar sensors and distance information of the other vehicle by output values of the ultrasonic sensors, calculate a time of collision with the fusion target vehicle and, when the collision time is within a preset threshold time, make a control to operate one or more of a warning display device, an alarm output device, and a braking system.