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US 7,411,661 B2Granted
Laser radar for vehicle using reflector and method for controlling the same
AssigneeHyundai Motor Company
InventorCheol Ho Kim
Life of this patent
Estimating the term…
Abstract
The present invention is related to a laser radar for a vehicle using a cylindrical reflector and a method for controlling the same, and more particularly, to a laser radar for a vehicle that comprises a reflector comprising a plurality of reflection mirrors preferably with reflection accuracy of 0.5° unit.
Claims10
A laser radar for a vehicle using a cylindrical reflector, comprising:
- a cylindrical reflector having a cylindrical body and a plurality of reflection mirrors wherein the plurality of reflection mirrors are attached to an internal surface of the caliber of the cylindrical body along a circumferential direction thereof so that a transmitting reflection angle of a laser beam can vary in accordance with rotation of the cylindrical body;
- a rotation driving means for rotating the cylindrical reflector;
- a laser light receiving part positioned in a center hole of the cylindrical reflector;
- left/right laser light emitting parts positioned to be symmetrical to each other at a rear side of the cylindrical reflector;
- a position detector for detecting a rotation angle of the cylindrical reflector;
- a controller for receiving signals of the laser light receiving part and the position detector;
- and
- a modulation circuit for adjusting the modulation frequency of a laser beam in accordance with a detection signal of the position detector.
5 more elements
A method for controlling a laser radar for a vehicle using a cylindrical reflector, comprising the steps of:
- providing a cylindrical reflector having a cylindrical body and a plurality of reflection mirrors at a predetermined position of a vehicle body wherein the plurality of reflection mirrors are attached to an internal surface of the caliber of the cylindrical body along a circumferential direction thereof so that a transmitting reflection angle of a laser beam can vary in accordance with rotation of the cylindrical body;
- rotating the cylindrical reflector by a rotation driving means;
- reflecting a laser beam generated from left/right laser light emitting part on the reflection mirror of the cylindrical reflector to transmit it to the object to be detected;
- receiving the laser beam reflected from the object to be detected through a laser light receiving part to transmit it to a controller;
- and
- signal processing the laser beam received from the controller to convert it into a digital signal and then calculating the distance from the object to be detected and/or its speed.
3 more elements
Dependencies are inferred from the claim text.