Patent ID: 8031107
Filing Date: 2011-10-04
Classification: G01S

Abstract:
1. An object detection device for a vehicle comprising: a transmitting-receiving unit transmitting an electromagnetic wave at a predetermined cycle towards a predetermined region set in front of the vehicle in a travelling direction of the vehicle, the transmitting-receiving unit also receiving a reflection wave caused by the electromagnetic wave reflecting from an object; a reflection point computation unit computing each position of a plurality of reflection points on the object at which the electromagnetic wave is reflected; an object width computation unit computing a width of the object based on the positions of the reflection points computed by the reflection point computation unit; a representative point setting unit setting a position of a representative point of the object based on the positions of the reflection points computed by the reflection point computation unit; a lateral relative velocity computation unit computing a lateral relative velocity being a relative velocity of the object in a width direction of the vehicle based on an amount of change in the positions of the reflection points or the position of the representative point; a memory unit recording the object as a width-widening static object when the object is a static object and an amount of increase in the width of the object is greater than a predetermined value, based on a detection history of the object detected at each of the predetermined cycle; and a lateral relative velocity correction unit correcting the lateral relative velocity computed by the lateral relative velocity computation unit, when the object recorded as the width-widening static object by the memory unit is detected at a left end part or a right end part of a detection region.