Systems and methods for improved accuracy in determining altitude from pressure
US9829313B2 · kind B2 · utility
1Cited by
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33Claims
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Key dates
| Filing date | Feb 10, 2015 |
| Grant date | Nov 28, 2017 |
| Priority date | — |
| Expiry date | Mar 4, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N19/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Described are methods, systems, means and machine-readable media embodying program instructions for considering water molecules and other mixtures in air when estimating an altitude of a pressure sensor. In at least one implementation, a measurement of humidity is used to compute a gas constant value, and the computed gas constant value is used to estimate an altitude of a pressure sensor. In another embodiment, the measurement of humidity is compared to a threshold condition related to humidity. Depending on the results of the comparison, the measurement of humidity is used to determine the altitude of the pressure sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.