A WMS-TDLAS first harmonic gas concentration detection method based on double demodulation
By employing a dual demodulation WMS-TDLAS first harmonic gas concentration detection method, the parameters are optimized and dual demodulation is performed. This solves the problem of insufficient signal-to-noise ratio in WMS-TDLAS technology under open optical paths, expands the detection distance and detection limit, and improves the system's remote detection capability and measurement accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HARBIN ENG UNIV
- Filing Date
- 2026-05-19
- Publication Date
- 2026-07-17
AI Technical Summary
The WMS-TDLAS technology has insufficient signal-to-noise ratio when detecting trace gases under open optical paths, which affects the detection distance and detection limit, making it difficult to adapt to gas leak detection in complex field environments.
The WMS-TDLAS first harmonic gas concentration detection method based on dual demodulation is adopted. Through the optimal parameter calculation system, low frequency and high frequency modulation system, laser driving system, high frequency and low frequency demodulation system and concentration calculation system, the parameters are optimized and dual demodulation is performed to improve the signal-to-noise ratio.
It effectively extends the detection range and detection limit of the TDLAS system, improves the system's long-range and trace detection capabilities, and enhances the system's stability and measurement accuracy.
Smart Images
Figure CN122409577A_ABST