Patent ID: 6810330
Filing Date: 2004-10-26
Classification: B60W,G01S,G06K,G08G,Y10S

Abstract:
A detector for an object on a road surface, said detector comprising:beam emitting means for emitting a beam; beam receiving means for receiving reflected beam of the beam emitted from said beam emitting means by an object; distance measuring means for measuring a distance to said object from said reflected beam received by said beam receiving means; recognizing means for recognizing an overhead beam reflector with a known height based on the reflected beam received by said beam receiving means; distance identifying means for identifying a distance to said overhead beam reflector immediately before said overhead beam reflector becomes unrecognizable by said recognizing means; and displacement detecting means for detecting a directional displacement of the beam emitted from said beam emitting means based on the distance to said overhead beam reflector identified by said distance identified means.