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US 2011/0098947 A1Published application
Underwater depth measurement device
AssigneeEric Abdel Fattah
InventorEric Abdel FATTAH
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Abstract
An underwater depth measurement device includes a piezoresistive ceramic transducer in communication with a circuit for outputting an absolute pressure.
Claims11
An underwater depth measurement device, comprising:
- a housing;
- a piezoresistive ceramic transducer received in the housing, the piezoresistive ceramic transducer being operable to measure changes in absolute pressure of less than 0.001 bar;
- an electronic circuit operably connected to the piezoresistive ceramic transducer to receive signals from the piezoresistive ceramic transducer in response to measured changes in absolute pressure and to amplify the signals;
- a temperature sensor;
- a microprocessor operably connected to the electronic circuit and the temperature sensor, the microprocessor for receiving amplified signals and a signal corresponding to a measured temperature;
- wherein the underwater depth measurement device determines a depth based on the measured changes in absolute pressure and the measured temperature.
3 more elements
Dependencies are inferred from the claim text.