Portable gas detecting device
US10775276B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2019 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | May 8, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB81B2201/036
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A portable gas detecting device includes at least one detecting chamber, at least one gas sensor and at least one actuator. The gas sensor is disposed in the detecting chamber and configured for monitoring gas inside the detecting chamber. The actuator is disposed in the detecting chamber and includes a piezoelectric actuator. When an actuating signal is applied to the piezoelectric actuator and the piezoelectric actuator generates a resonance effect, the gas outside the detecting chamber is introduced into the detecting chamber for sampling. The actuator is driven by an instantaneous sampling pulse to control a trace of gas to flow into the detecting chamber for forming a stable airflow environment. In the stable airflow environment, a gas molecule is dissolved in or bonded to a reaction material on a surface of the gas sensor for reacting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.