Indoor air quality sensor and method
First Claim
1. An indoor air quality sensor designed to be utilized in a zone of a building to control the ventilation of the zone, comprising:
- a primary sensor means for sensing a selected leading indicator of contamination in the zone and providing an output signal representative thereof;
at least a first additional sensor means for sensing at least a first selected secondary indicator of contamination in the zone and providing an output signal representative thereof; and
processor means for generating an output signal representative of the indoor air quality in the zone, receiving the output signals from the primary sensor means and the first additional sensor means and generating the output signal representative of the indoor air quality in the zone by influencing the output of the primary sensor means by an amount that is a function of the output signal of the first additional sensor means.
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Abstract
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.
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Citations
30 Claims
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1. An indoor air quality sensor designed to be utilized in a zone of a building to control the ventilation of the zone, comprising:
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a primary sensor means for sensing a selected leading indicator of contamination in the zone and providing an output signal representative thereof; at least a first additional sensor means for sensing at least a first selected secondary indicator of contamination in the zone and providing an output signal representative thereof; and processor means for generating an output signal representative of the indoor air quality in the zone, receiving the output signals from the primary sensor means and the first additional sensor means and generating the output signal representative of the indoor air quality in the zone by influencing the output of the primary sensor means by an amount that is a function of the output signal of the first additional sensor means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. 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:
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sensing a selected leading indicator of contamination in the zone and providing a first output signal representative thereof; sensing at least one selected secondary indicator of contamination in the zone and providing an output signal representative thereof; and generating an output signal representative of the indoor air quality in the zone by influencing the first output signal by an amount that is a function of the output signal of the least one additional sensor means. - View Dependent Claims (10, 11, 12, 13)
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14. An indoor air quality sensor designed to be utilized in a zone of a building to control the ventilation of the zone, comprising:
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carbon dioxide sensor means for sensing the carbon dioxide concentration level in the zone, the carbon dioxide concentration level being a selected leading indicator of contamination in the zone and providing an output signal representative thereof; volatile organic compound sensor means for sensing at least one volatile organic compound in the zone, the sensed volatile organic compound being a selected secondary indicator of contamination in the zone and providing an output signal representative thereof; and processor means for generating an output signal representative of the indoor air quality in the zone, receiving the output signals from the carbon dioxide sensor means and the volatile organic compound sensor means and generating the output signal representative of the indoor air quality in the zone by influencing the output of the carbon dioxide sensor by an amount that is a function of the output signal of the volatile organic compound sensor means. - View Dependent Claims (15, 16, 17, 18)
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- 19. 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.
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22. A method of controlling the fresh air input to a ventilated zone comprising the steps of:
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sensing a principal contaminant in the air of the zone and generating a signal related to the levels of concentration of such principal contaminant; sensing at least one auxiliary contaminant in the zone and generating a signal related to the level of concentration of such auxiliary contaminant; generating an output signal representative of the air quality in the zone by 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. - View Dependent Claims (23, 24)
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25. A method of determining indoor air quality comprising the steps of:
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measuring indoor air for the presence of a first specific contaminant; measuring indoor air for the presence of a second contaminant; applying a compensation signal to the first measurement where the compensation signal is a function of the second measurement; and generating and disseminating an indoor air quality output signal representative of the compensated signal. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification