Gas detection device and method
The invention discloses a gas detection device and method. The device comprises a light source module, a similar strip-shaped light beam shaping module, a photoacoustic signal detection module and a data processing module. The similar strip-shaped light beam shaping module shapes the excitation ligh...
Gespeichert in:
| Hauptverfasser: | , , , , , , |
|---|---|
| Format: | Patent |
| Sprache: | chi ; eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | The invention discloses a gas detection device and method. The device comprises a light source module, a similar strip-shaped light beam shaping module, a photoacoustic signal detection module and a data processing module. The similar strip-shaped light beam shaping module shapes the excitation light source into an excitation light beam with similar strip-shaped light spot characteristics, the photoacoustic signal detection module comprises a tuning fork type quartz crystal oscillator and an elliptical acoustic resonant cavity, and an excitation light beam with the similar strip-shaped light spot characteristics enters a photoacoustic signal detection device and acts with the gas to be detected to generate a photoacoustic signal; the photoacoustic signal pushes a vibration arm of the tuning fork type quartz crystal oscillator to vibrate to generate an electric signal after being resonated and enhanced in an elliptical acoustic resonant cavity, and the gas concentration can be inversedby detecting the electric |
|---|