Correction of factors in vehicle accelerometer signals
US7643960B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2007 |
| Grant date | Jan 5, 2010 |
| Priority date | — |
| Expiry date | Mar 5, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W50/045
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring and storing values of sensor bias in acceleration values for a vehicle, obtained over a plurality of time periods from a sensor having a specified range of expected variability of sensor bias values, includes measuring a first value of sensor bias obtained during operation of the vehicle in a first time period, storing the measured first value of sensor bias for use in one or more subsequent time periods, measuring a second value of sensor bias obtained during operation of the vehicle in a second time period, subtracting the measured second value of sensor bias from the stored first value of sensor bias, thereby generating a sensor bias difference, and storing the measured second value of sensor bias, for reference in one or more subsequent time periods, if the sensor bias difference is within the specified range of expected variability of sensor bias values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.