Opto-Electronic Engineering, Volume. 51, Issue 4, 240022-1(2024)
Programmable gate array WM-TDLAS gas detection system design and application
Fig. 2. Structure of the FPGA-based WM-TDLAS CO2 concentration detection system
Fig. 4. Detection system linearity experiment. (a) Amplitude extraction result of sinusoidal signal; (b) Linear fitting of extracted amplitude with actual value
Fig. 5. Anti-noise and Q-value experiment. (a) Harmonic extraction results with different signal-to-noise ratio; (b) Frequency amplitude response of DLIA
Fig. 7. Experimental results of carbon dioxide concentration detection. (a) Second harmonic waveforms; (b) Carbon dioxide concentration inversion curve
Fig. 9. System stability experiment. (a) Carbon dioxide concentration fluctuates; (b) Allan variance
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Xin Zhang, Haifeng Qiu, Jiaqi Lan, Qin Hu, He Zhang. Programmable gate array WM-TDLAS gas detection system design and application[J]. Opto-Electronic Engineering, 2024, 51(4): 240022-1
Category: Article
Received: Jan. 2, 2024
Accepted: Feb. 27, 2024
Published Online: Jul. 8, 2024
The Author Email: Zhang He (张贺)