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US 5,509,295 AGranted
Weather station device
AssigneeAltronics, a Division of Ridgewood Engineering, Inc.
InventorFred J. Bartoli
Life of this patent
Estimating the term…
Abstract
This invention describes a density altitude measuring device whereby the density altitude is calculated based on atmospheric inputs. The computer of the density altitude measuring device is connected to temperature, pressure and humidity sensors. The sensors send input to the computer describing the ambient atmosphere. The computer then takes sufficient samples from the sensors and calculates the density altitude. Finally, the data is displayed on a screen, storage device, or printer.
Claims8
A portable self-contained moistureless density altitude measuring apparatus comprising in combination:
- a housing;
- temperature sensing means in said housing and providing a temperature output;
- pressure sensing means in said housing and providing a pressure output;
- humidity sensing means in said housing and providing a humidity output;
- a microprocessor contained within said housing and having inputs connected with at least said temperature sensing means, said pressure sensing means, and said humidity sensing means for sampling the temperature outputs, pressure outputs and humidity outputs and calculating a moistureless gas density;
- said microprocessor also comprising a means for subtracting a moisture content in computing a moistureless gas density;
- and said microprocessor including means for outputting a moistureless density altitude derived from said moistureless gas density to said means for outputting a moistureless density altitude.
4 more elements
Dependencies are inferred from the claim text.