Real-time dynamic and quantitative detection device for carbon dioxide in human exhaled air
US11759124B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2021 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Jan 3, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/497
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a real-time dynamic and quantitative detection device for carbon dioxide in human exhaled air, which comprises: a face mask which comprises an air inlet and an air outlet; an inhalation channel connected with the air inlet of the face mask, a first one-way valve is provided in the inhalation channel; an exhalation channel connected with the air outlet of the face mask, a second one-way valve is provided in the exhalation channel; an air path switching element connected with the exhalation channel to realize the switching between an exhalation air path to be detected and an inflation air path; a detection air chamber connected with the exhalation channel, at least one carbon dioxide sensor connected with an external upper computer is provided in the detection air chamber; before detection, the air path switching element switches to the inflation air path to clean and initialize the detection air chamber; during detection, the air path switching element switches to the exhalation air path to be detected, then the human exhaled air enters the detection air chamber through the exhalation channel, and real-time dynamic and quantitative detection of carbon dioxide in the exh…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.