Vehicle tracker mileage-time monitor and calibrator
US5987378A · kind A · utility
38Cited by
31References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1996 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Oct 24, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2205/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.