Barometric altimeter including a temperature compensation...

Details Barometric altimeter including a temperature compensation... Barometric altimeter including a temperature compensation...

2007-05-18

2008-09-16

Allen, Andre J (Department: 2855)

Measuring and testing

Barometer

C073S387000, C073S386000

Reexamination Certificate

active

07424825

ABSTRACT:
The present invention proposes a portable barometric altimeter (10) including a pressure sensor (14), a calculation unit (16) which determines an altitude value (H) as a function of the pressure (P) measured by the sensor (14) and as a function of a reference temperature (T0) corresponding to an estimate of the temperature of the air mass at sea level, and a time measuring unit (18) that supplies calendar data (D), characterized in that it includes a correction circuit (32), which selects the reference temperature value (T0) from among a series of values (TS) contained in a database stored in the altimeter (10), as a function of the date (D) and as a function of a predefined climate value (C). The invention also proposes a method of determining altitude (H).

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patent: 2007/0068245 (2007-03-01), Blondeau et al.
patent: 2004070317 (2004-08-01), None
European Search Report issued in corresponding application No. EP 06 11 4255, completed Oct. 19, 2006.

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