Ground contact switch for personal navigation system

Details Ground contact switch for personal navigation system Ground contact switch for personal navigation system

2011-05-17

2011-05-17

Luebke, Renee (Department: 2833)

Electricity: circuit makers and breakers

Special application

C002S905000

Reexamination Certificate

active

07943874

ABSTRACT:
A ground contact switch system comprises a first object configured to contact a ground surface during a stride, and one or more switches coupled to the first object. An inertial measurement unit can be coupled to the first object. The one or more switches are configured to detect when the first object is at a stationary portion of the stride. The one or more switches can also be configured to send a signal to activate an error correction scheme for the inertial measurement unit.

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Saarinen et al., “Personal Navigation System”, Sep. 2004, pp. 212-217, vol. 1, Publisher: IEEE.
Brand et al., “Foot-to-Foot Range Measnurement as an Aid to Personal Navigation”, “CIGTF 22nd Guidance Test Symposium”, Jun. 23, 2003, pp. 113-121, Publisher: ION 59th Annual Meeting, Published in: Albuquerque, NM US.

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