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Home Processing Data Vehicle-tracker-mileage-time-monitor-and-calibrator

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 Vehicle tracker, mileage-time monitor and calibrator

Details
Inventors: Schipper, John F.; Rodal, Eric B.; Janky, James M.; Cowl, David J.;
Assignee: Trimble Navigation Limited (Sunnyvale, CA)
Primary Examiner: Cuchlinski, Jr.; William A.
Assistant Examiner: Donnelly; Arthur D.
Attorney, Agent or Firm: Schipper; John

A system for monitoring location and speed of a vehicle, using a location determination system such as GPS, GLONASS or LORAN and an optional odometer or speedometer, for determining and recording the locations and times at which vehicle speed is less than a threshold speed for at least a threshold time (called a "vehicle arrest event"). Vehicle arrest event locations, times and time intervals are stored and/or printed to provide trip and mileage records and for efficiency monitoring. A vehicle odometer and/or speedometer can also be calibrated and/or corrected using this approach.

DETAILED DESCRIPTION These needs are met by the invention, which provides a vehicle location determination system, optionally linked to the vehicle odometer, that: (1) tracks vehicle location and motion; (2) determines and stores the location coordinates for each location at which a vehicle arrest event occurs, and the time interval associated with each vehicle arrest event; (3) notes and stores a vehicle mileage reading at the location of each vehicle arrest event; (4) provides one or more measures of vehicle user performance related to the length of time consumed by a vehicle arrest event; and (5) provides calibration and/or correction for a conventional vehicle odometer or speedometer.



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