Aircraft air contaminant analyzer and method of use
US10955318B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Oct 28, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0427
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed are methods for determining and classifying aircraft air contaminants using contaminant analyzers comprising a contaminant collector comprising a membrane and a heater vaporizing captured contaminants; a gravimetric sensor generating a proportionate response when contaminant mass is added to or removed from the sensor, the sensor arranged to receive contaminants desorbed from the membrane when the membrane is heated; a frequency measurement device, measuring the response generated by the sensor as the contaminant is added to and removed from the sensor; a computer readable medium bearing a contaminant recognition program and calibration data; a processor executing the recognition program, the program including a module classifying contaminants by type, and a module using the calibration data for comparison with magnitude of the response generated by the sensor to calculate contaminant concentration; and, a pump, generating flow of aircraft air through the contaminant collector before and after the membrane is heated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.