Gas sensor
US11002718B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2018 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Sep 23, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2027/222
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Gas sensors for the detection of rare events consume very little or no power. The sensors include materials that interact with a target gas. Accumulation of the target gas on the sensor materials leads to a change in electrical properties of the sensor. The sensors may have high gain, meaning that a large electrical change is induced upon gas accumulation. The sensor might change from an extremely high resistance (open circuit) to a measurably low resistance, or it might change from a relatively low capacitance to a high capacitance. The gas sensors are connected to electronics that can transmit an alarm signal after gas has been detected. The electronics may be in a low power sleep mode until awakened by a signal from the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.