Measuring and testing – Barometer
Patent
1990-09-28
1991-10-22
Woodiel, Donald O.
Measuring and testing
Barometer
340977, 364433, G01C 2120
Patent
active
050584278
ABSTRACT:
An accumulating altimeter includes a programmable accumulator which selectively accumulates altitude changes from a reference altitude in accordance with accumulation thresholds. Altitude changes in the direction of interest, e.g. altitude gains, are accumulated once a non-opposing accumulation threshold has been reached. Opposing altitude changes which are less than an opposing accumulation threshold are used to offset non-opposing changes. Opposing altitude changes which are equal to or greater than the opposing accumulation threshold are used to re-establish the reference altitude, whereafter accumulation of non-opposing altitude changes resume after the non-opposing accumulation threshold has been reached.
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Avocet, Inc.
Woodiel Donald O.
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