Decompression and air consumption computer
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 3, 1989
Issued Date -
N/A
app pub date -
Jun 9, 1987
filing date -
Jan 30, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved SCUBA diving gauge. A pictograph display is provided which has a shape which conveys the type of information being displayed. The pictograph has the shape of a SCUBA tank for a tank pressure display and the shape of a person for a display of nitrogen absorbed. Pressure transducers coupled to the SCUBA tank and the external water provided the pressure readings required to produce the respective displays. The differential signal from the transducer is supplied to a processor through an auto-zeroing circuit. The auto-zeroing circuit uses a capacitor initially coupled to an amplifier reference input and single ended output to store an offset voltage. During a measurement, the capacitor is disconnected from the amplifier output and has its other lead coupled to a full scale value of the differential input to produce an output signal which is a ratio.
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