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US 8,893,548 B2Granted
Smart-phone bracket for car and truck navigation
AssigneeTrimble Navigation Limited
InventorsPeter Van Wyck Loomis, Morrison Ulman
Life of this patent
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Abstract
Inertial navigation systems for wheeled vehicles with constrained motion degrees of freedom are described. Various parts of the navigation systems may be implemented in a smart-phone.
Claims18
A navigation system comprising:
- a bracket for rigidly attaching a smart-phone to a car or truck such that inertial sensors in the smart-phone sense constrained vehicle motion rather than arbitrary motion, and;
- a MEMS pressure altimeter included in the bracket for providing altitude data to the smart-phone for use in combination with inertial sensor data to estimate vehicle position, heading and speed.
A navigation system comprising:
- a sensor unit capable of being rigidly attached to a car or truck, the sensor unit comprising:
- an altimeter,
- a pitch rate gyro and yaw rate gyro,
- a longitudinal accelerometer, and
- a wireless system for sending sensor data to a smart-phone.
2 more elements
Dependencies are inferred from the claim text.