Movement-detecting altimeter
US6761064B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 2002 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | Nov 29, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C5/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To provide a movement-detecting altimeter designed so as to be capable of avoiding excessive accumulation of errors. The movement-detecting altimeter has a movement dependent altitude updating unit which updates an indicated altitude when a moving condition is maintained, and which avoids updating of the indicated altitude when the moving condition is not maintained. The movement dependent altitude updating unit has an estimated altitude computation section which obtains an estimated altitude by regarding as a change in altitude a variation in reference altitude obtained from the latest detected pressure value and the preceding detected pressure value obtained by a pressure detection unit when the moving condition is maintained, an abnormality determination section which makes a determination as to whether or not the estimated altitude is an abnormal value, and an altitude indication setting section which sets, as an altitude to be indicated, a designated altitude based on the reference altitude when the abnormality determination section determines that the estimated altitude is an abnormal value, and which sets the estimated altitude as an altitude to be indicated when the abnorma…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.