Estimating motion of wheeled carts

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9731744
SERIAL NO

15256300

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Examples of systems and methods for locating movable objects such as carts (e.g., shopping carts) are disclosed. Such systems and methods can use dead reckoning techniques to estimate the current position of the movable object. Various techniques for improving accuracy of position estimates are disclosed, including compensation for various error sources involving the use of magnetometer and accelerometer, and using vibration analysis to derive wheel rotation rates. Also disclosed are various techniques to utilize characteristics of the operating environment in conjunction with or in lieu of dead reckoning techniques, including characteristic of environment such as ground texture, availability of signals from radio frequency (RF) transmitters including precision fix sources. Such systems and methods can be applied in both indoor and outdoor settings and in retail or warehouse settings.

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Patent Owner(s)

  • GATEKEEPER SYSTEMS, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Carter, Scott J Seal Beach, US 71 3983
Hannah, Stephen E Placentia, US 65 2651
James, Jesse M Santa Ana, US 52 1719
Ramanathan, Narayanan V Lake Forest, US 12 110

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