Patent ID: 11867619
Assignee: PROJECT CANARY, PBC
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. An identification system to identify a target chemical at a site, the identification system comprising:
a sampling inlet to:
capture a sample of air from an atmosphere surrounding the site;

a compound sensor, comprising:
a sample cell to receive the sample of air from the sampling inlet;
a light source adjoined to the sample cell to emit a beam of light,
wherein the beam of light passes through the sample cell and interacts with the sample of air; and

a spectrophotometer adjoined to the sample cell to:
generate a first transmission spectrum of the light; and
generate a second transmission spectrum of the light in response to the beam of light interacting with the sample of air; and

a logic control system connected to the compound sensor, configured to:
process the second transmission spectrum by:
denoising and debiasing the second transmission spectrum to generate a processed second transmission spectrum;

generate an absorption spectrum by calculating absorbance, wherein the absorbance is calculated by comparing the first transmission spectrum to the processed second transmission spectrum; and
identify the target chemical by decomposing the absorption spectrum to extract an absorption spectra related to the target chemical.