System and method for determining vehicle travel routes and mileage
US5974356A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1997 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Oct 15, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S1/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for determining a route of travel and associated mileage of a vehicle is disclosed. The system records a vehicle's identification number, location, and odometer mileage transmitted via satellite to a fixed station. The location data is provided to a processor which determines an estimated route of travel by said vehicle using a routing program. The estimated route is comprised of a plurality of position segments, each position segment having a corresponding mileage and average expected speed. The route of travel may be checked for accuracy by comparing the estimated route mileage to the odometer mileage. If a significant difference is found, a diagnostic procedure is performed which attempts to correct the mismatch by evaluating alternate routes of travel. If the alternative route mileage agrees with the actual odometer miles within a predetermined threshold, the new route and associated mileage is used as the "true" route taken by the vehicle. The diagnostic procedure can also identify position segments where the vehicle appeared to be traveling much slower or faster than the average speed for that position segment. The mileage difference can then be allocated …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.