The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2015
Filed:
Oct. 05, 2012
Applicant:
Google Inc., Mountain View, CA (US);
Inventor:
Pete Lombrozo, Scotts Valley, CA (US);
Assignee:
Google Inc., Mountain View, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60W 40/10 (2012.01); G01P 13/04 (2006.01); G01P 3/481 (2006.01); G01D 5/245 (2006.01);
U.S. Cl.
CPC ...
B60W 40/10 (2013.01); B60W 2520/06 (2013.01); G01D 5/2457 (2013.01); G01P 3/481 (2013.01); G01P 13/04 (2013.01); G01P 13/045 (2013.01);
Abstract
A system for an autonomous vehicle is disclosed that combines information from single-channel encoders serving as wheel speed sensors on multiple wheels of the vehicle. A pattern of the outputs from the single-channel encoders is characterized while the vehicle is traveling in a first direction. A shift in the characterized pattern is associated with a change in direction of the autonomous vehicle. Such detection of changes in direction can be used to determine the position of the vehicle at low speeds or while starting and/or stopping where the vehicle can potentially rock back and forth.