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US 5,394,934 AGranted
Indoor air quality sensor and method
AssigneeAmerican Standard Inc.
InventorsAlan D. Rein, John C. Olson, Philipp A. Bachmann, Urs F. Bogli
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AssigneeAmerican Standard Inc.
InventorsAlan D. Rein, John C. Olson, Philipp A. Bachmann, Urs F. Bogli
Estimating the term…
An indoor air quality sensor designed to be utilized in a zone of a building to control the ventilation of the zone and the method of effecting such control. The sensor comprises a first sensor for sensing a selected leading indicator of contamination in the zone and providing an output signal representative thereof and at least one additional sensor for sensing at least one selected secondary indicator of contamination in the zone and providing an output signal representative thereof. A processor, utilized for generating an output signal representative of the indoor air quality in the zone, receives the output signals from the first sensor and the least one additional sensor and generates the output signal representative of the indoor air quality in the zone by influencing the output of the first sensor by an amount that is a function of the output signal of the least one additional sensor.
An indoor air quality sensor designed to be utilized in a zone of a building to control the ventilation of the zone, comprising:
A method of sensing indoor air quality in a zone of a building in order to control the ventilation of the zone, comprising the steps of:
An indoor air quality sensor designed to be utilized in a zone of a building to control the ventilation of the zone, comprising:
A control system designed to control the fresh air input to a ventilated zone having sensing means for sensing a principal contaminant and at least one auxiliary contaminant in the zone and generating signals related to the levels of concentration of such contaminants, and microprocessor means for generating an output signal representative of the air quality in the zone, communicatively coupled to said sensing means and receiving the signals related to the levels of concentration of such contaminants therefrom, and correcting the signal related to the principal contaminant with the signal representative of at least one auxiliary contaminant, the corrected signal being related to the air quality in the zone and utilized to control the fresh air input to the ventilated zone.
A method of controlling the fresh air input to a ventilated zone comprising the steps of:
A method of determining indoor air quality comprising the steps of:
Dependencies are inferred from the claim text.