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US 11,768,110 B2Granted
Air quality monitoring system and method
AssigneeProject Canary, Pbc
InventorsAnna Ailene Scott, Yan Azdoud, Christopher Daniel Kelley
Life of this patent
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Abstract
In an illustrative configuration, a method for monitoring air quality is disclosed. The method includes accepting analyte gas into a cell and reflecting light rays into the analyte gas repeatedly across the cell into at least one sensor. The light scattered by particulate matter in the analyte gas and amount of spectra-absorption due to presence of a gaseous chemical is then measured. Based on the determined amount of spectra-absorption and the measured scattered light the gaseous chemical is then measured.
Claims21
An air quality monitoring method comprising:
- accepting analyte gas into a cell;
- emitting light rays into the analyte gas;
- reflecting the light rays into the analyte gas repeatedly across the cell;
- directing the light rays across a path within the cell into at least one sensor in response to repeated reflections;
- generating a first spectra signal and a second spectra signal in response to directing the light rays into the at least one sensor;
- and
- deconvoluting the first spectra signal and the second spectra signal based on properties of a light source emitting the light rays and optical properties of the at least one sensor at current temperature and pressure within the cell to generate a deconvoluted first spectra signal and a deconvoluted second spectra signal;
- enhancing the deconvoluted first spectra signal based on the deconvoluted second spectra signal to compensate an amount of spectra-absorption for presence of particulate matter;
- and
- determining a gaseous chemical based on the deconvoluted first spectra signal, post enhancing.
7 more elements
An air quality monitoring method comprising:
- accepting analyte gas into a cell;
- emitting light rays into the analyte gas;
- reflecting the light rays into the analyte gas repeatedly across the cell;
- directing the light rays across a path within the cell into at least one sensor in response to repeated reflections;
- generating a first spectra signal and a second spectra signal in response to directing the light rays into the at least one sensor;
- and
- deconvoluting the first spectra signal and the second spectra signal based on properties of a light source emitting the light rays and optical properties of the at least one sensor at current temperature and pressure within the cell to generate a deconvoluted first spectra signal and a deconvoluted second spectra signal;
- enhancing the deconvoluted second spectra signal based on the deconvoluted first spectra signal to compensate presence of particulate matter with an amount of spectra-absorption;
- and
- identifying the particulate matter based on the deconvoluted second spectra signal, post enhancing.
7 more elements
A system for air quality monitoring, the system comprising:
- a light source that emits light rays;
- a cell that accepts analyte gas, the cell comprising:
- two reflective surfaces located at opposite ends of the cell;
- wherein the reflective surfaces are to repeatedly reflect the light rays along a path across the cell and to direct the light rays into at least one sensor in response to repeated reflections;
- wherein a first spectra signal and a second spectra signal is generated in response to directing the light rays into the at least one sensor;
- and
- a processing module to:
- deconvolute the first spectra signal and the second spectra signal based on properties of the light source emitting the light rays and optical properties of the at least one sensor at current temperature and pressure within the cell to generate a deconvoluted first spectra signal and a deconvoluted second spectra signal;
- enhance the deconvoluted first spectra signal based on the deconvoluted second spectra signal to compensate an amount of spectra-absorption for presence of particulate matter;
- and
- determine a gaseous chemical based on the deconvoluted first spectra signal, post enhancing.
8 more elements
A system for air quality monitoring, the system comprising:
- a light source that emits light rays;
- a cell that accepts analyte gas, the cell comprising:
- two reflective surfaces located at opposite ends of the cell;
- wherein the reflective surfaces are to repeatedly reflect the light rays along a path across the cell and to direct the light rays into at least one sensor in response to repeated reflections;
- wherein a first spectra signal and a second spectra signal is generated in response to directing the light rays into the at least one sensor;
- and
- a processing module to:
- deconvolute the first spectra signal and the second spectra signal based on properties of the light source emitting the light rays and optical properties of the at least one sensor at current temperature and pressure within the cell to generate a deconvoluted first spectra signal and a deconvoluted second spectra signal;
- enhance the deconvoluted second spectra signal based on the deconvoluted first spectra signal to compensate presence of particulate matter with an amount of spectra-absorption;
- and
- identify particulate matter based on the deconvoluted second spectra signal, post enhancing.
8 more elements
Dependencies are inferred from the claim text.