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US 6,550,304 B2Granted
Method of compensating a MOS gas sensor, method of manufacturing a MOS gas sensor, MOS gas sensor, and fuel cell system
AssigneeAvista Laboratories, Inc.
InventorsGreg A. Lloyd, William A. Fuglevand
Life of this patent
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Abstract
A method of compensating a MOS gas sensor is described and which includes using a MOS gas sensor to provide a signal indicative of gas concentration of a target gas in an ambient; providing a signal representative of dew point of the ambient; and modifying the signal from the MOS gas sensor using the signal representative of dew point to simultaneously compensate for the effects of both temperature and relative humidity on the MOS gas sensor.
Claims5
A fuel cell power system comprising:
- a housing having a fuel gas inlet and an exhaust outlet;
- at least one ion exchange membrane fuel cell disposed within the housing;
- and
- a MOS gas sensor system including a MOS gas sensor which, in operation, senses the presence of a fuel in the housing, and which, in operation, provides a signal indicative of the gas concentration of the fuel in the housing;
- equipment configured to determine the dew point in the housing;
- and
- compensation circuitry configured to modify the signal from the MOS gas sensor using a compensation factor, which is based upon the determined dew point.
4 more elements
Dependencies are inferred from the claim text.