Zhuo MA, Yafei LI, Yang LU, Fang SONG, Chuantao ZHENG, Yiding WANG. Infrared Carbon Monoxide Sensor System for Early Fire Detection[J]. Acta Photonica Sinica, 2022, 51(5): 0530002
- Acta Photonica Sinica
- Vol. 51, Issue 5, 0530002 (2022)
Fig. 1. Simulated absorption spectra of CO and interference gas in infrared band
Fig. 2. Schematic diagram of infrared CO sensor system.
Fig. 3. Infrared emission spectra of the used light source
Fig. 4. Structure and simulation of the absorption cell
Fig. 5. Photo of the digital orthogonal lock-in amplifier and test result
Fig. 6. Calibration of the sensor system
Fig. 7. Dynamic response time test of the sensor system
Fig. 8. System stability measurement results on volume fraction 0×10-6 CO gas sample and Allan deviation curve
Fig. 9. Long-term monitoring result on the CO sample with a volume fraction of 0×10-6 and Allan standard deviation curve after Kalman filter
Fig. 10. Cotton，paper and wood smouldering experiments and CO concentration measurement results
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