Navigation systems and methods for wheeled objects

Details Navigation systems and methods for wheeled objects Navigation systems and methods for wheeled objects

2006-03-20

2011-10-25

Hellner, Mark (Department: 3663)

Data processing: vehicles, navigation, and relative location

Navigation

C701S215000, C701S220000, C701S023000, C340S573400, C340S573300, C340S539130, C340S568500, C340S674000

Reexamination Certificate

active

08046160

ABSTRACT:
A navigation system uses a dead reckoning method to estimate an object's present position relative to one or more prior positions. In some embodiments, the dead reckoning method determines a change in position from the object's heading and speed during an elapsed time interval. In embodiments suitable for use with wheeled objects, the dead reckoning method determines the change in position by measuring the heading and the amount of wheel rotation. Some or all of the components of the navigation system may be disposed within a wheel, such as a wheel of a shopping cart.

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