US 12,313,517 B2 · Air quality assessment based upon optical absorbance

Abstract

A method and system of determining air quality are disclosed. In examples, a method comprises identifying one or more aerosol particle types based on an absorbance spectra of aerosol particles captured on a filter and determining a mass concentration of each of the one or more aerosol particle types based on the absorbance spectra and the aerosol particle type. The method further comprises detecting a median particle size of each of the one or more aerosol particle types based on a rate of change of the absorbance spectra and the aerosol particle type. The method further comprises determining an air quality metric based on the identified one or more aerosol particle types, the determined mass concentration of each of the one or more aerosol particle types, and the determined median particle size of each of the one or more aerosol particle types.

Claims20

Dependent claims

A method of determining air quality, the method comprising:

identifying one or more aerosol particle types based on an absorbance spectra of aerosol particles captured on a filter;
determining a mass concentration of each of the one or more aerosol particle types based on the absorbance spectra and the aerosol particle type;
detecting a median particle size of each of the one or more aerosol particle types based on a rate of change of the absorbance spectra and the aerosol particle type;
and
determining an air quality metric based on the identified one or more aerosol particle types, the determined mass concentration of each of the one or more aerosol particle types, and the determined median particle size of each of the one or more aerosol particle types.

2 more elements

A computer-readable storage medium comprising instructions that configure one or more programmable processors to:

identify one or more aerosol particle types based on an absorbance spectra of aerosol particles captured on a filter;
determine a mass concentration of each of the one or more aerosol particle types based on the absorbance spectra and the aerosol particle type;
detect a median particle size of each of the one or more aerosol particle types based on a rate of change of the absorbance spectra and the aerosol particle type;
determine an air quality metric based on the identified one or more aerosol particle types, the determined mass concentration of each of the one or more aerosol particle types, and the determined median particle size of each of the one or more aerosol particle types;
and
display the air quality metric.

3 more elements

Dependencies are inferred from the claim text.

Air quality assessment based upon optical absorbance

Life of this patent

Air quality assessment based upon optical absorbance

Life of this patent

Abstract

Claims20